Click here for production status of specific part numbers. MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface General Description The MAX4800A/MAX4802A provide high-voltage switching on eight channels for ultrasonic imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage low-charge-injection SPST switches, controlled by a 20MHz serial interface. Data is clocked into an internal 8-bit shift register and retained by a programmable latch with enable and clear inputs. A power-on reset function ensures that all switches are open on power-up. The devices operate with a wide range of high-voltage supplies including: VPP/VNN = +100V/-100V, +185V/-15V, and +40V/-160V. The digital interface operates from a separate VDD supply from +2.7V to +6V. Digital inputs DIN, CLK, LE, and CLR are +6V tolerant, independent of the VDD supply voltage. The MAX4802A provides integrated 35k bleed resistors on each switch terminal to discharge capacitive loads. The devices are drop-in replacements for the Supertex HV2203 and HV2303. They are available in the 48-pin LQFP, 26-bump CSBGA, and 28-pin PLCC packages. All devices are specified for the commercial 0C to +70C temperature range. Applications Ultrasound Imaging Printers SPI is a trademark of Motorola, Inc. 19-4120; Rev 2; 4/19 Features Fast SPITM Interface 20MHz Pin-Compatible Replacement for Supertex HV2203 (MAX4800A) Pin-Compatible Replacement for Supertex HV2303 (MAX4802A) Flexible High-Voltage Supplies Up to VPP - VNN = 200V Low-Charge-Injection, Low-Capacitance 22 Switches DC to 50MHz Analog-Signal Frequency Range -77dB Off-Isolation at 5MHz Low 10A Quiescent Current Integrated Bleed Resistors (MAX4802A Only) Available in Standard PLCC, LQFP, and CSBGA Packages MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Absolute Maximum Ratings (All voltages referenced to GND.) VDD Logic Supply Voltage........................................-0.3V to +7V VPP - VNN Supply Voltage...................................................220V VPP Positive Supply Voltage.................... -0.3V to (VNN + 220V) VNN Negative Supply Voltage..............................+0.3V to -220V Logic Inputs LE, CLR, CLK, DIN..............................-0.3V to +7V DOUT........................................................ -0.3V to (VDD + 0.3V) RGND (MAX4802A)..............................................-4.5V to +0.3V COM_, NO_............................................................... VNN to VPP Continuous Power Dissipation (TA = +70C) 26-Bump CSBGA (derate 11.8mW/C above +70C)..... 941mW 28-Pin PLCC (derate 10.5mW/C above +70C).........842mW 48-Pin LQFP (derate 22.7mW/C above +70C).......1818mW Operating Temperature Range................................0C to +70C Storage Temperature Range............................. -65C to +150C Junction Temperature.......................................................+150C Lead Temperature (excluding CSBGA, soldering, 10s)... +300C Soldering Temperature (reflow) 28 PLCC.......................................................................+245C All other packages........................................................ +260C Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information PACKAGE TYPE: 26 CSBGA Package Code X07265+1 Outline Number 21-0158 Land Pattern Number 90-0184 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient (JA) 85C/W Junction to Case (JC) 23C/W PACKAGE TYPE: 28 PLCC Package Code Q28+13 Outline Number 21-0049 Land Pattern Number 90-0235 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient (JA) 44C/W Junction to Case (JC) 10C/W PACKAGE TYPE: 48 LQFP Package Code C48+6 Outline Number 21-0054 Land Pattern Number 90-0093 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient (JA) 44C/W Junction to Case (JC) 10C/W For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. www.maximintegrated.com Maxim Integrated 2 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Electrical Characteristics (VDD = +2.7V to +6V, VPP = +40V to (VNN + 200V), VNN = -40V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG SWITCH Analog-Signal Range VCOM_, VNO_ VNN + 10 (Note 2) TA TA VPP = +40V, TA VNN = -160V, TA VCOM_ = 0V ICOM = 200mA TA TA TA ICOM = 5mA TA VPP = +100V, TA VNN = -100V, TA VCOM_ = 0V ICOM = 200mA TA TA TA ICOM = 5mA TA TA VPP = +160V, VNN = -40V TA ICOM = 200mA TA TA VPP = +100V, VNN = -100V, VCOM_ = 0V, ICOM = 5mA ICOM = 5mA Small-Signal Switch On-Resistance Small-Signal Switch On-Resistance Small-Signal Switch On-Resistance Matching RONS RONS RONS Large-Signal Switch On-Resistance RONL VCOM_ = VPP - 10V, ICOM = 1A Shunt Resistance (MAX4802A only) RINT NO_ or COM_ to RGND, switch off Switch-Off Leakage = = = = = = = = = = = = = = = = = = 0C +25C +70C 0C +25C +70C 0C +25C +70C 0C +25C +70C 0C +25C +70C 0C +25C +70C 26 22 22 18 20 16 5 VPP 10 30 38 48 25 27 32 25 27 30 18 24 27 23 25 30 22 25 27 20 15 30 ICOM_(OFF), VCOM_, VNO_ = VPP - 10V or unconnected; INO_(OFF) (MAX4800A only) V % 35 50 k 0 2 10 A Switch-Off DC Offset RL = 100k (MAX4800A), no load (MAX4802A) 0 10 mV Switch-On DC Offset RL =100k (MAX4800A), no load (MAX4802A) 0 10 mV Switch-Output Peak Current (Note 3) ICOM_ duty cycle 0.1% Switch-Output Isolation Diode Current 300ns pulse width, 2% duty cycle (Note 3) www.maximintegrated.com TA = 0C TA = +25C TA = +70C 3 2 2 300 3 A mA Maxim Integrated 3 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Electrical Characteristics (continued) (VDD = +2.7V to +6V, VPP = +40V to (VNN + 200V), VNN = -40V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS -30 -58 -60 -33 -77 -80 4 11 18 pF 20 -150 36 56 +150 pF mV SWITCH DYNAMIC CHARACTERISITICS Off-Isolation (Note 3) VISO Crosstalk COM_, NO_ Off-Capacitance COM_ On-Capacitance Output Voltage Spike VCT Charge Injection (MAX4802A only) LOGIC LEVELS Logic-Input Low Voltage Logic-Input High Voltage Logic Input Capacitance Logic Input Leakage DOUT Low Voltage DOUT High Voltage POWER SUPPLIES VDD Supply Voltage f = 5MHz, RL = 1k, CL = 15pF f = 5MHz, RL = 50 f = 5MHz, RL = 50 (Note 3) CCOM_(OFF), VCOM_ = 0V, VNO_ = 0V, f = 1MHz (Note 3) CNO_ (OFF) CCOM_ (ON) VCOM_ = 0V, f = 1MHz (Note 3) VSPK RL = 50 (Note 3) VPP = +40V, VNN = -160V, VCOM_ = 0V Q VPP = +100V, VNN = -100V, VCOM_ = 0V VPP = +160V, VNN = -40V, VCOM_ = 0V VIL VIH CIN IIN VOL VOH (Note 3) ISINK = 1mA ISOURCE = 0.75mA VDD - 0.5 2.7 VPP 40 VNN IDDQ -160 IDD VDD = +5V, VIL = 0V, VIH = +5V, fCLK = 5MHz VPP Supply Quiescent Current IPPQ All switches remain on or off, ICOM_(ON) = 5mA www.maximintegrated.com 6.0 VNN + 200 VIL = 0V, VIH = VPSD, fCLK = 0Hz VDD Supply Dynamic Current INNQ 10 +1 0.4 -1 VNN Supply Voltage VDD Supply Quiescent Current VNN Supply Quiescent Current pC 0.75 VDD - 0.75 VDD IPP dB 820 600 350 VPP Supply Voltage VPP Supply Dynamic Current dB 50kHz output switching frequency with no load TA TA TA TA VPP = +100V, TA VNN = -100V TA TA VPP = +160V, TA VNN = -40V TA VPP = +40V, VNN = -160V All switches remain on or off, ICOM_(ON) = 5mA 10 = = = = = = = = = 0C +25C +70C 0C +25C +70C 0C +25C +70C 10 V V pF A V V V V -15 3 V A 2 mA 50 A 6.5 6.5 6.5 4.0 4.0 4.0 4.0 4.0 4.0 mA 50 A Maxim Integrated 4 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Electrical Characteristics (continued) (VDD = +2.7V to +6V, VPP = +40V to (VNN + 200V), VNN = -40V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS TA TA TA TA VPP = +100V, TA VNN = -100V TA TA VPP = +160V, TA VNN = -40V TA VPP = +40V, VNN = -160V MIN = = = = = = = = = 0C +25C +70C 0C +25C +70C 0C +25C +70C TYP MAX UNITS 6.5 6.5 6.5 4.0 4.0 4.0 4.0 4.0 4.0 mA INN 50kHz output switching frequency with no load Turn-On Time tON VNO_ = VPP - 10V, RL = 10k, VNN = -40V to -160V 5 s Turn-Off Time tOFF VNO_ = VPP - 10V, RL = 10k, VNN = -40V to -160V 5 s Output Switching Frequency fSW Duty cycle = 50% 50 kHz VNN Supply Dynamic Current ANALOG SWITCH Maximum VCOM_, VNO_ Slew Rate dV/dt (Note 3) CLK Frequency fCLK Daisy chaining DIN to CLK Setup Time tDS DIN to CLK Hold Time tDH CLK to LE Setup Time tCS LE Low Pulse Width tWL CLR High Pulse Width tWC CLK Rise and Fall Times (Note 3) tR, tF 20 V/ns LOGIC TIMING (Figure 1) CLK to DOUT Delay tDO VDD = +5V 10% 20 VDD = +3V 10% 10 VDD = +5V 10% 10 VDD = +3V 10% 16 VDD = +5V 10% 3 VDD = +3V 10% 3 VDD = +5V 10% 36 VDD = +3V 10% 65 VDD = +5V 10% 14 VDD = +3V 10% 22 VDD = +5V 10% 20 VDD = +3V 10% 40 MHz ns ns ns ns ns VDD = +5V 10% 50 VDD = +3V 10% 50 VDD = +5V 10%, CL 20pF 6 42 VDD = +3V 10%, CL 20pF 12 80 ns ns Note 1: Specifications at 0C are guaranteed by correlation and design. Note 2: The analog-signal input VCOM_ and VNO_ must satisfy VNN (VCOM_, VNO_) VPP, or remain unconnected during power-up and power-down. Note 3: Guaranteed by design and characterization; not production tested. www.maximintegrated.com Maxim Integrated 5 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Typical Operating Characteristics (VDD = +5V, VPP = +100V, VNN = -100V, TA = +25C, unless otherwise noted.) 0.4 DIN = 01010101 0.3 -80 -75 -70 0.2 0 0.01 0.1 1 -60 10 1 30 TA = +70C 20 TA = 0C 10 60 40 20 0 0 +60/ -140 +80/ -120 VDD = +5V 80 5 +40/ -160 VDD = +3V 100 TA = +25C +100/ +120/ +140/ +160/ -100 -80 -60 -40 0 INN 0.35 IPP 0.30 0.25 0.20 10 20 30 40 50 60 70 TEMPERATURE (C) MAX4800A/2A toc07 SUPPLY CURRENT (mA) 0.40 MAX4800A/2A toc03 50 60 6.0 ALL SWITCHES OPERATING ALL SWITCHES CONNECTED TO GND 5.0 INN 4.0 70 IPP 3.0 2.0 IDD 0 0 10 20 30 40 50 60 70 80 90 100 SWITCHING FREQUENCY (kHz) SUPPLY CURRENT vs. VPP/VNN SUPPLY VOLTAGE ONE SWITCH OPERATING ALL SWITCHES CONNECTED TO GND fSW = 50kHz 40 1.0 VPP/VNN SUPPLY VOLTAGE (V) 0.45 30 SUPPLY CURRENT vs. SWITCHING FREQUENCY 140 15 20 CLK TO DOUT DELAY vs. TEMPERATURE 120 25 10 TEMPERATURE (C) 160 tDO (ns) ON-RESISTANCE () 35 0 FREQUENCY (MHz) 180 MAX4800A/2A toc04 40 ISW = 200mA 10 0 10 CLOCK FREQUENCY (MHz) ON-RESISTANCE vs. VPP/VNN SUPPLY VOLTAGE 15 5 -65 DIN = 00000000 MAX4800A/2A toc05 0.1 ISW = 5mA 20 MAX4800A/2A toc06 0.5 -85 LOGIC THRESHOLD vs. VDD SUPPLY VOLTAGE 3.5 RISING 3.0 2.5 MAX4800A/2A toc08 0.6 25 ON-RESISTANCE () 0.7 -90 30 SUPPLY CURRENT (mA) 0.8 RS = RL = 50 -95 LOGIC THRESHOLD (V) IDD SUPPLY CURRENT (mA) 0.9 -100 OFF-ISOLATION (dB) MAX4800A/2A toc01 1.0 ON-RESISTANCE vs. TEMPERATURE OFF-ISOLATION vs. FREQUENCY MAX4800A/2A toc02 IDD SUPPLY CURRENT vs. CLOCK FREQUENCY FALLING 2.0 1.5 1.0 0.5 +40/ -160 +60/ -140 +80/ -120 +100/ +120/ +140/ +160/ -100 -80 -60 -40 VPP/VNN SUPPLY VOLTAGE (V) www.maximintegrated.com 0 2 3 4 5 VDD SUPPLY VOLTAGE (V) 6 Maxim Integrated 6 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface 18 NO1 44 17 N.C. 45 16 N.C. NO5 46 15 47 14 COM1 N.C. NO2 N.C. 48 13 N.C. 43 COM0 7 NO0 8 5 6 7 8 25 NO5 24 NO6 23 COM6 22 NO7 NO4 COM4 COM5 N.C. 9 21 COM7 VPP 10 20 DOUT N.C. (RGND) 11 19 CLR 12 13 14 15 16 17 9 10 11 12 18 PLCC COM2 4 N.C. COM3 N.C. NO3 N.C. 3 COM5 N.C. COM4 N.C. NO4 N.C. 2 26 MAX4800A MAX4802A + 1 27 LE 42 28 CLK MAX4800A MAX4802A 41 6 1 + DIN N.C. 21 5 NO1 NO3 19 40 N.C. NO7 N.C. COM6 N.C. NO6 COM1 2 COM3 20 N.C. NO0 N.C. COM0 3 VDD 23 22 4 N.C. 38 39 N.C. COM7 COM2 VPP 37 VNN 24 DOUT NO2 TOP VIEW 36 35 34 33 32 31 30 29 28 27 26 25 GND N.C. N.C. VDD CLK DIN N.C. CLR LE TOP VIEW GND N.C. (RGND) N.C. VNN Pin/Bump Configurations () MAX4802A ONLY LQFP (7mm x 7mm) () MAX4802A ONLY TOP VIEW 1 2 3 4 5 6 A4 A B D E 8 9 MAX4800A MAX4802A NO1 C 7 C3 C4 C5 C6 C7 NO2 COM1 COM0 VPP VNN D5 D6 D7 D1 D3 D4 COM3 NO3 COM2 NO0 N.C. (RGND) GND D9 VDD E1 E3 E4 E5 E6 E7 E9 COM4 NO4 F3 COM5 F4 COM7 F5 LE F6 CLK F7 DIN NO5 COM6 NO7 DOUT CLR F G H H4 NO6 CSBGA () MAX4802A ONLY www.maximintegrated.com Maxim Integrated 7 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Pin/Bump Descriptions PIN/BUMP MAX4800A LQFP MAX4800A CSBGA MAX4800A PLCC NAME FUNCTION 1 E4 26 COM5 Analog Switch 5--Common Terminal 2, 4, 6, 7, 9, 11, 13, 15, 17, 19, 21, 23, 26, 27, 30, 31, 32, 38, 40, 42, 44, 46, 48 D6 9, 11, 15 N.C. 3 E1 27 COM4 5 E3 28 NO4 8 D1 1 COM3 10 D3 2 NO3 12 D4 3 COM2 14 C3 4 NO2 16 C4 5 COM1 18 A4 6 NO1 20 C5 7 COM0 22 D5 8 NO0 Analog Switch 0--Normally Open Terminal 24 C6 10 VPP Positive High-Voltage Supply. Bypass VPP to GND with a 0.1F or greater ceramic capacitor. 25 C7 12 VNN Negative High-Voltage Supply. Bypass VNN to GND with a 0.1F or greater ceramic capacitor. 28 D7 13 GND Ground 29 D9 14 VDD Digital Supply Voltage. Bypass VDD to GND with a 0.1F or greater ceramic capacitor. 33 E9 16 DIN Serial-Data Input 34 E7 17 CLK Serial-Clock Input 35 E6 18 LE 36 F7 19 CLR 37 F6 20 DOUT Serial-Data Output 39 E5 21 COM7 Analog Switch 7--Common Terminal 41 F5 22 NO7 43 F4 23 COM6 45 H4 24 NO6 Analog Switch 6--Normally Open Terminal 47 F3 25 NO5 Analog Switch 5--Normally Open Terminal www.maximintegrated.com No Connection. Not connected internally. Analog Switch 4--Common Terminal Analog Switch 4--Normally Open Terminal Analog Switch 3--Common Terminal Analog Switch 3--Normally Open Terminal Analog Switch 2--Common Terminal Analog Switch 2--Normally Open Terminal Analog Switch 1--Common Terminal Analog Switch 1--Normally Open Terminal Analog Switch 0--Common Terminal Latch-Enable Input, Active Low Latch Clear Input Analog Switch 7--Normally Open Terminal Analog Switch 6--Common Terminal Maxim Integrated 8 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Pin/Bump Descriptions (continued) PIN/BUMP MAX4802A LQFP MAX4802A CSBGA MAX4802A PLCC NAME FUNCTION 1 E4 26 COM5 Analog Switch 5--Common Terminal 2, 4, 6, 7, 9, 11,13, 15, 17, 19, 21, 23, 26, 30, 31, 32, 38, 40, 42, 44, 46, 48 -- 9, 15 N.C. 3 E1 27 COM4 5 E3 28 NO4 8 D1 1 COM3 10 D3 2 NO3 12 D4 3 COM2 14 C3 4 NO2 16 C4 5 COM1 18 A4 6 NO1 20 C5 7 COM0 22 D5 8 NO0 Analog Switch 0--Normally Open Terminal 24 C6 10 VPP Positive High-Voltage Supply. Bypass VPP to GND with a 0.1F or greater ceramic capacitor. 25 C7 12 VNN Negative High-Voltage Supply. Bypass VNN to GND with a 0.1F or greater ceramic capacitor. 27 D6 11 RGND 28 D7 13 GND Ground 29 D9 14 VDD Digital Supply Voltage. Bypass VDD to GND with a 0.1F or greater ceramic capacitor. 33 E9 16 DIN Serial-Data Input 34 E7 17 CLK Serial-Clock Input 35 E6 18 LE 36 F7 19 CLR 37 F6 20 DOUT Serial-Data Output 39 E5 21 COM7 Analog Switch 7--Common Terminal 41 F5 22 NO7 43 F4 23 COM6 45 H4 24 NO6 Analog Switch 6--Normally Open Terminal 47 F3 25 NO5 Analog Switch 5--Normally Open Terminal www.maximintegrated.com No Connection. Not connected internally. Analog Switch 4--Common Terminal Analog Switch 4--Normally Open Terminal Analog Switch 3--Common Terminal Analog Switch 3--Normally Open Terminal Analog Switch 2--Common Terminal Analog Switch 2--Normally Open Terminal Analog Switch 1--Common Terminal Analog Switch 1--Normally Open Terminal Analog Switch 0--Common Terminal Bleed Resistor Ground Latch-Enable Input, Active Low Latch Clear Input Analog Switch 7--Normally Open Terminal Analog Switch 6--Common Terminal Maxim Integrated 9 MAX4800A/MAX4802A DIN DN+1 Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface 50% 50% DN DN-1 tWL 50% 50% LE tCS 50% 50% CLK tDS tDH tDO DOUT tON ON 90% SWITCH 10% OFF CLR tOFF 50% 50% tWC *FOR SLOWER CLK RATES REFER TO THE MAX4800/MAX4801/MAX4802 DATA SHEET. Figure 1. Serial Interface Timing* Detailed Description The MAX4800A/MAX4802A provide high-voltage switching on eight channels for ultrasound imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage lowcharge-injection SPST switches, controlled by a 20MHz serial interface. Data is clocked into an internal 8-bit shift register and retained by a programmable latch with enable and clear inputs. A power-on reset function ensures that all switches are open on power-up. The devices operate with a wide range of high-voltage supplies including: VPP/VNN = +100V/-100V, +185V/-15V, or +40V/-160V. The digital interface operates from a separate VDD supply from +2.7V to +6V. Digital inputs DIN, CLK, LE, and CLR are +6V tolerant, independent of the VDD supply voltage. The MAX4802A provides www.maximintegrated.com integrated 35k bleed resistors on each switch terminal to discharge capacitive loads. The devices are drop-in replacements for the Supertex HV2203 and HV2303, respectively. Analog Switch The devices allow a peak-to-peak analog-signal range from VNN + 10V to VPP - 10V. Analog switch inputs must be unconnected, or satisfy VNN (VCOM_, VNO_) VPP during power-up and power-down. High-Voltage Supplies The devices allow a wide range of high-voltage supplies. The devices operate with V NN from -160V to -15V and VPP from +40V to (VNN + 200V). When VNN is connected to GND (single-supply applications), the devices operate with VPP up to +200V. Maxim Integrated 10 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface LE CLK DIN D7 D6 D5 D4 D3 D2 D1 MSB DOUT D7 D0 LSB D6 D5 D4 D3 D2 D1 D0 D7 DATA FROM PREVIOUS DATA BYTE POWER-UP DEFAULT: D7-D0 = 0 Figure 2. Latch-Enable Interface Timing The VPP and VNN high-voltage supplies are not required to be symmetrical, but the voltage difference VPP - VNN must not exceed 200V. Bleed Resistors (MAX4802A) The MAX4802A features integrated 35k bleed resistors to discharge capacitive loads such as piezoelectric transducers. Each analog-switch terminal is connected to RGND with a bleed resistor. Serial Interface The devices are controlled by a serial interface with an 8-bit serial shift register and transparent latch. Each of the eight data bits controls a single analog switch (see Table 1). Data on DIN is clocked with the most significant bit (MSB) first into the shift register on the rising edge of CLK. Data is clocked out of the shift register onto DOUT on the rising edge of CLK. DOUT reflects the status of DIN, delayed by eight clock cycles (see Figures 1 and 2). www.maximintegrated.com Latch Enable (LE) Drive LE logic-low to change the contents of the latch and update the state of the high-voltage switches (Figure 2). Drive LE logic-high to freeze the contents of the latch and prevent changes to the switch states. To reduce noise due to clock feedthrough, drive LE logic-high while data is clocked into the shift register. After the data shift register is loaded with valid data, pulse LE logic-low to load the contents of the shift register into the latch. Latch Clear (CLR) The devices feature a latch clear input. Drive CLR logic-high to reset the contents of the latch to zero and open all switches. CLR does not affect the contents of the data shift register. Pulse LE logic-low to reload the contents of the shift register into the latch. Power-On Reset The devices feature a power-on reset circuit to ensure all switches are open at power-on. The internal 8-bit serial shift register and latch are set to zero on power-up. Maxim Integrated 11 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Table 1. Serial Interface Programming CONTROL BITS DATA BITS D0 (LSB) D1 D2 D3 D4 D5 D6 D7 (MSB) FUNCTION LE CLR SW0 L L L Off H L L On L L Off On L H SW1 SW2 SW3 SW4 SW5 SW6 SW7 L L L L L Off H L L On L L L Off H L L On L L L Off H L L On L L L Off H L L On L L L Off H L L On L L L Off H L L On X X X X X X X X H L X X X X X X X X X H Hold Previous State Off Off Off Off Off Off Off Off X = Don't care. Applications Information Logic Levels The devices' digital interface inputs CLK, DIN, LE, and CLR are tolerant of up to +6V, independent of the VDD supply voltage, allowing compatibility with higher voltage controllers. Daisy Chaining Multiple Devices Digital output DOUT is provided to allow the connection of multiple devices by daisy-chaining (Figure 3). Connect each DOUT to the DIN of the subsequent device in the chain. Connect CLK, LE, and CLR inputs of all devices, and drive LE logic-low to update all devices simultaneously. Drive CLR high to open all the switches simultaneously. Additional shift registers may be included anywhere in series with the MAX4800A/MAX4802A data chain. www.maximintegrated.com Supply Sequencing and Bypassing The devices do not require special sequencing of the VDD, VPP, and VNN supply voltages; however, analog switch inputs must be unconnected, or satisfy VNN (VCOM_, VNO_) VPP during power-up and power-down. Bypass VDD, VNN, and VPP to GND with a 0.1F ceramic capacitor as close to the device as possible. Chip Information PROCESS: BCDMOS Maxim Integrated 12 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface U10 DIN DIN U11 DIN DOUT MAX4800A CLK CLK LE LE DOUT MAX4800A LE DIN DOUT MAX4800A CLK CLK CLR U1n LE CLR CLR CLR Figure 3. Interfacing Multiple Devices by Daisy-Chaining Functional Diagrams VDD VPP MAX4800A DIN CLK COM0 LEVEL SHIFTER SHIFT REGISTER DOUT NO0 LATCH LEVEL SHIFTER CLR NO7 LE GND www.maximintegrated.com COM7 VNN Maxim Integrated 13 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Functional Diagrams (continued) VDD VPP MAX4802A DIN CLK COM0 LEVEL SHIFTER SHIFT REGISTER NO0 LATCH COM7 DOUT LEVEL SHIFTER CLR NO7 LE GND www.maximintegrated.com VNN RGND Maxim Integrated 14 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Ordering Information/ Selector Guide PART BLEED RESISTORS SECOND SOURCE PINPACKAGE MAX4800ACXZ+* No -- 26 CSBGA MAX4800ACQI+ No HV2203PJ-G 28 PLCC MAX4800ACCM+* No HV2203FG-G 48 LQFP MAX4802ACXZ+* Yes MAX4802ACQI+ Yes HV2303PJ-G 28 PLCC MAX4802ACCM+* Yes HV2303FG-G 48 LQFP -- 26 CSBGA Note: All devices are specified over the commercial 0C to +70C temperature range. *Future product--contact factory for availability. +Denotes a lead(Pb)-free/RoHS-compliant package. www.maximintegrated.com Maxim Integrated 15 MAX4800A/MAX4802A Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 5/08 Initial release 1 2/11 Changed the DC analog-signal frequency range to 50MHz in the Features section; changed the TQFP package to LQFP in the General Description, Ordering Information, Features, Pin/Bump Configurations, Pin/Bump Descriptions, and Package Information 2 4/19 Updated the Electrical Characteristics section DESCRIPTION -- 1, 8, 14 5 For pricing, delivery, and ordering information, please visit Maxim Integrated's online storefront at https://www.maximintegrated.com/en/storefront/storefront.html. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. (c) 2019 Maxim Integrated Products, Inc. 16