General Description
The MAX4245/MAX4246/MAX4247 family of low-cost
op amps offer rail-to-rail inputs and outputs, draw only
320µA of quiescent current, and operate from a single
+2.5V to +5.5V supply. For additional power conserva-
tion, the MAX4245/MAX4247 offer a low-power shutdown
mode that reduces supply current to 50nA, and puts the
amplifiers’ outputs in a high-impedance state. These
devices are unity-gain stable with a 1MHz gain-band-
width product driving capacitive loads up to 470pF.
The MAX4245/MAX4246/MAX4247 family is specified
from -40°C to +125°C, making them suitable for use in a
variety of harsh environments, such as automotive appli-
cations. The MAX4245 single amplifier is available in
ultra-small 6-pin SC70 and space-saving 6-pin SOT23
packages. The MAX4246 dual amplifier is available in
8-pin SOT23, SO, and µMAX®packages. The MAX4247
dual amplifier comes in a tiny 10-pin µMAX package.
Applications
Portable Communications
Single-Supply Zero-Crossing Detectors
Instruments and Terminals
Electronic Ignition Modules
Infrared Receivers
Sensor-Signal Detection
Features
♦Rail-to-Rail Input and Output Voltage Swing
♦50nA (max) Shutdown Mode (MAX4245/MAX4247)
♦320µA (typ) Quiescent Current Per Amplifier
♦Single +2.5V to +5.5V Supply Voltage Range
♦110dB Open-Loop Gain with 2kΩLoad
♦0.01% THD with 100kΩLoad
♦Unity-Gain Stable up to CLOAD = 470pF
♦No Phase Inversion for Overdriven Inputs
♦Available in Space-Saving Packages
6-Pin SC70 or 6-Pin SOT23 (MAX4245)
8-Pin SOT23/SO or 8-Pin µMAX (MAX4246)
10-Pin µMAX (MAX4247)
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
________________________________________________________________
Maxim Integrated Products
1
Pin Configurations
Ordering Information
19-2016; Rev 2; 11/11
Pin Configurations continued at end of data sheet.
PART TEMP RANGE PIN-
PACKAGE
TOP
MARK
MAX4245AXT+T -40°C to +125°C 6 SC70 AAZ
MAX4245AUT+T -40°C to +125°C 6 SOT23 AAUB
MAX4246AKA+T -40°C to +125°C 8 SOT23 AAIN
MAX4246ASA+T -40°C to +125°C 8 SO —
MAX4246AUA+T -40°C to +125°C 8 µMAX —
MAX4247AUB+T -40°C to +125°C 10 µMAX —
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Selector Guide
PART AMPLIFIERS
PER PACKAGE
SHUTDOWN
MODE
MAX4245AXT 1 Yes
MAX4245AUT 1 Yes
MAX4246AKA 2 No
MAX4246ASA 2 No
MAX4246AUA 2 No
MAX4247AUB 2 Yes
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
VSS
OUTIN-
16V
DD
5
IN+ MAX4245
SC70-6/SOT23-6
TOP VIEW
2
34
1
2
3
4
8
7
6
5
VDD
OUTB
INB-
INB+VSS
INA+
INA-
OUTA
MAX4246
SOT23-8/µMAX/SO
SHDN
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD / 2, RLconnected from OUT to VDD / 2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA= +25°C, unless otherwise noted.) (Note 1)
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.
Power-Supply Voltage (VDD to VSS) .........................-0.3V to +6V
All Other Pins ...................................(VSS - 0.3V) to (VDD + 0.3V)
Output Short-Circuit Duration
(OUT shorted to VSS or VDD)................................. Continuous
Continuous Power Dissipation (TA= +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............695mW
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VDD Inferred from PSRR test 2.5 5.5 V
VDD = +2.7V 320 650
Supply Current (Per Amplifier) IDD VDD = +5.5V 375 700 µA
Supply Current in Shutdown ISHDN_ SHDN_ = VSS (Note 2) 0.05 0.5 µA
Input Offset Voltage VOS VSS - 0.1V ≤ VCM ≤ VDD + 0.1V ±0.4 ±1.5 mV
Input Bias Current IBVSS - 0.1V ≤ VCM ≤ VDD + 0.1V ±10 ±50 nA
Input Offset Current IOS VSS - 0.1V ≤ VCM ≤ VDD + 0.1V ±1±6nA
Input Resistance RIN |VIN+ - VIN-| ≤ 10mV 4000 kΩ
Input Common-Mode Voltage
Range VCM Inferred from CMRR test V
S S
- 0.1 V
D D
+ 0.1 V
Common-Mode Rejection Ratio CMRR VSS - 0.1V ≤ VCM ≤ VDD + 0.1V 65 80 dB
Power-Supply Rejection Ratio PSRR 2.5V ≤ VDD ≤ 5.5V 75 90 dB
VSS + 0.05V ≤ VOUT ≤ VDD - 0.05V,
RL = 100kΩ120
Large-Signal Voltage Gain AV
VSS + 0.2V ≤ VOUT ≤ VDD - 0.2V, RL = 2kΩ95 110
dB
RL = 100kΩ1
Output Voltage Swing High VOH Specified as
VDD - VOUT RL = 2kΩ35 60 mV
RL = 100kΩ1
Output Voltage Swing Low VOL Specified as
VOUT - VSS RL = 2kΩ30 60 mV
Sourcing 11
Output Short-Circuit Current IOUT
(
SC
)
VDD = +5.0V Sinking 30 mA
Output Leakage Current in
Shutdown IOUT
(
SH
)
Device in Shutdown Mode
(SHDN_ = VSS), VSS ≤ VOUT ≤ VDD (Note 2) ±0.01 ±0.5 µA
SHDN_ Logic Low VIL (Note 2) 0.3 x VDD V
SHDN_ Logic High VIH (Note 2) 0.7 x V
D D V
SHDN_ Input Current IL/IHVSS ≤ SHDN_ ≤ VDD (Note 2) 0.5 50 nA
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD / 2, RLconnected from OUT to VDD / 2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Gain-Bandwidth Product GBW 1.0 MHz
Phase Margin φM70 degrees
Gain Margin GM20 dB
Slew Rate SR 0.4 V/µs
Input Voltage-Noise Density enf = 10kHz 52 nV/√Hz
Input Current-Noise Density inf = 10kHz 0.1 pA/√Hz
Capacitive-Load Stability CLOAD AV = 1 (Note 3) 470 pF
Shutdown Delay Time t(SH) (Note 2) 3 µs
Enable Delay Time t(EN) (Note 2) 4 µs
Power-On Time tON 4µs
Input Capacitance CIN 2.5 pF
Total Harmonic Distortion THD f = 10kHz, VOUT = 2Vp-p, AV = +1,
VDD = +5.0V, Load = 100kΩ to VDD/2 0.01 %
Settling Time to 0.01% tSVOUT = 4V step, VDD = +5.0V, AV = +1 10 µs
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD / 2, RLconnected from OUT to VDD / 2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA= -40°C to +125°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VDD Inferred from PSRR test 2.5 5.5 V
Supply Current (Per Amplifier) IDD VDD = +2.7V 800 µA
Supply Current in Shutdown ISHDN_ SHDN_ = VSS (Note 2) 1 µA
Input Offset Voltage VOS VSS ≤ VCM ≤ VDD (Note 4) ±3.0 mV
Input Offset Voltage Drift TCVOS VSS ≤ VCM ≤ VDD (Note 4) ±2 µV/°C
Input Bias Current IBVSS ≤ VCM ≤ VDD (Note 4) ±100 nA
Input Offset Current IOS VSS ≤ VCM ≤ VDD (Note 4) ±10 nA
Input Common-Mode Voltage
Range VCM Inferred from CMRR test (Note 4) VSS VDD V
Common-Mode Rejection Ratio CMRR VSS ≤ VCM ≤ VDD (Note 4) 60 dB
Power-Supply Rejection Ratio PSRR 2.5V ≤ VDD ≤ 5.5V 70 dB
Large-Signal Voltage Gain AVVSS + 0.2V ≤ VOUT ≤ VDD - 0.2V,
RL = 2kΩ85 dB
Output Voltage Swing High VOH Specified as VDD - VOUT, RL = 2kΩ90 mV
Output Voltage Swing Low VOL Specified as VOUT - VSS, RL = 2kΩ90 mV
Output Leakage Current in
Shutdown IOUT
(
SH
)
Device in Shutdown Mode (SHDN_ = VSS),
VSS ≤ VOUT ≤ VDD (Note 3) ±1.0 µA
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V, VSS = 0V, VCM = 0V, VOUT = VDD / 2, RLconnected from OUT to VDD / 2, SHDN_ = VDD (MAX4245/MAX4247 only),
TA= -40°C to +125°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SHDN_ Logic Low VIL (Note 2) 0.3 ✕ V
D D V
SHDN_ Logic High VIH (Note 2) 0.7 ✕ V
D D V
SHDN_ Input Current IL/IHVSS ≤ SHDN_ ≤ VDD (Notes 2, 3) 100 nA
Note 1: Specifications are 100% tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2: Shutdown mode is only available in MAX4245 and MAX4247.
Note 3: Guaranteed by design, not production tested.
Note 4: For -40°C to +85°C, Input Common-Mode Range is VSS - 0.1V ≤VCM ≤VDD + 0.1V.
Typical Operating Characteristics
(VDD = 2.7V, VSS = VCM = 0V, VOUT = VDD / 2, no load, TA = +25°C, unless otherwise noted.)
200
300
250
400
350
450
500
2.0 3.5 4.02.5 3.0 4.5 5.0 5.5
SUPPLY CURRENT PER AMPLIFIER
vs. SUPPLY VOLTAGE
MAX4245 toc01
VDD (V)
IDD (µA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
40
120
80
160
200
MAX4245/MAX4247
SHUTDOWN SUPPLY CURRENT
PER AMPLIFIER vs. TEMPERATURE
MAX4245 toc02
TEMPERATURE (°C)
ISHDN (nA)
-40 7015 125
0
200
100
400
300
500
600
01.00.5 1.5 2.0 2.5
INPUT OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
MAX4245 toc03
VCM (V)
VOS (µV)
VDD = 2.5V TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
200
100
400
300
500
600
0231 456
INPUT OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
MAX4245 toc04
VCM (V)
VOS (µV)
VDD = 5.5V
TA = -40°C
TA = +25°C
TA = +85°C
TA = +125°C
0
100
50
200
150
300
250
350
-40 15 70 125
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4245 toc05
TEMPERATURE (°C)
VOS (µV)
VDD = 2.5V
VDD = 5.5V
-15
-5
-10
5
0
15
10
20
0231 456
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
MAX4245 toc06
VCM (V)
IBIAS (nA)
TA = -40°C
TA = +25°C
TA = +125°C
VDD = 5.5V
TA = +85°C
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
_______________________________________________________________________________________
5
0
4
2
8
6
12
10
14
0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT SOURCE CURRENT
vs. OUTPUT VOLTAGE
MAX4245 toc07
VOUT (V)
ISOURCE (mA)
VDD = 5.5V
VDD = 2.5V
0
10
5
25
20
15
30
35
45
40
50
0 1.0 1.50.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT SINK CURRENT
vs. OUTPUT VOLTAGE
MAX4245 toc08
VOUT (V)
ISINK (mA)
VDD = 2.5V
VDD = 5.5V
0
10
30
20
40
OUTPUT SWING HIGH
vs. TEMPERATURE
MAX4245 toc09
TEMPERATURE (°C)
VDD - VOUT (mV)
-40 7015 125
RL = 2kΩ
RL = 100kΩ
0
10
30
20
40
OUTPUT SWING LOW
vs. TEMPERATURE
MAX4245 toc10
TEMPERATURE (°C)
VOUT - VSS (mV)
-40 7015 125
RL = 2kΩ
RL = 100kΩ
0.001 10 10000.10.01 1 100 10,000
CROSSTALK vs. FREQUENCY
MAX4245 toc11
FREQUENCY (kHz)
CROSSTALK (dB)
-130
-110
-90
-70
-50 0
-100
0.1 10 10 100 1000 10,000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-80
MAX4245 toc12
FREQUENCY (kHz)
PSRR (dB)
-60
-40
-20
-90
-70
-50
-30
-10
100 1000 100,000
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. INPUT FREQUENCY
MAX4245 toc13
INPUT FREQUENCY (Hz)
THD + N (%)
1
0.1
0.0001
0.01
0.001
10,000
RL = 100kΩ
AV = +1
VOUT = 2VP-P
VDD = 5.0V
10
012345
1
0.1
0.01
0.001
0.0001
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. AMPLITUDE
MAX4245 toc14
OUTPUT VOLTAGE (VP-P)
THD + N (%)
RL = 100kΩ
AV = +1
fIN = 1kHz
VDD = 5.0V
80
0.1 1 10 100 1000 10,000
40
20
0
-20
-40
GAIN AND PHASE vs. FREQUENCY
MAX4245 toc15
FREQUENCY (kHz)
GAIN (dB)
60
90
-30
-90
-150
-210
-270
30
PHASE (deg)
PHASE
GAIN
NO LOAD
Typical Operating Characteristics (continued)
(VDD = 2.7V, VSS = VCM = 0V, VOUT = VDD / 2, no load, TA = +25°C, unless otherwise noted.)
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = 2.7V, VSS = VCM = 0V, VOUT = VDD / 2, no load, TA = +25°C, unless otherwise noted.)
80
0.1 1 10 100 1000 10,000
40
20
0
-20
-40
GAIN AND PHASE vs. FREQUENCY
MAX4245 toc16
FREQUENCY (kHz)
GAIN (dB)
60
90
-30
-90
-150
-210
-270
30
PHASE (deg)
PHASE
GAIN
2kΩ || 470pF
4µs/div
SMALL-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
IN
OUT
20mV/div
20mV/div
MAX4245 toc17
4µs/div
SMALL-SIGNAL TRANSIENT
RESPONSE (INVERTING)
IN
OUT
20mV/div
20mV/div
MAX4245 toc18
40µs/div
LARGE-SIGNAL TRANSIENT
RESPONSE (INVERTING)
IN
OUT
2V/div
2V/div
MAX4245 toc20
VDD = 5V
Detailed Description
Rail-to-Rail Input Stage
The MAX4245/MAX4246/MAX4247 have rail-to-rail input
and output stages that are specifically designed for
low-voltage, single-supply operation. The input stage
consists of composite NPN and PNP differential stages,
which operate together to provide a common-mode
range extending to both supply rails. The crossover
region of these two pairs occurs halfway between VDD
and VSS. The input offset voltage is typically ±400µV.
Low-operating supply voltage, low supply current and
rail-to-rail outputs make this family of operational ampli-
fiers an excellent choice for precision or general-pur-
pose, low-voltage, battery-powered systems.
Since the input stage consists of NPN and PNP pairs,
the input bias current changes polarity as the common-
mode voltage passes through the crossover region.
Match the effective impedance seen by each input to
reduce the offset error caused by input bias currents
flowing through external source impedance (Figures 1a
and 1b).
The combination of high-source impedance plus input
capacitance (amplifier input capacitance plus stray
capacitance) creates a parasitic pole that can produce
an underdamped signal response. Reducing input
capacitance or placing a small capacitor across the
feedback resistor improves response in this case.
The MAX4245/MAX4246/MAX4247 family’s inputs are
protected from large differential input voltages by inter-
nal 5.3kΩseries resistors and back-to-back triple-diode
stacks across the inputs (Figure 2). For differential-
input voltages much less than 2.1V (triple-diode drop),
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
_______________________________________________________________________________________ 7
Pin Description
PIN
MAX4245 MAX4246 MAX4247 NAME FUNCTION
1 — — IN+ Noninverting Input
244V
SS Ground or Negative Supply
3 — — IN- Inverting Input
4 — — OUT Amplifier Output
5——SHDN Shutdown
6 8 10 VDD Positive Supply
— 1 1 OUTA Amplifier Output Channel A
— 2 2 INA- Inverting Input Channel A
— 3 3 INA+ Noninverting Input Channel A
— 5 7 INB+ Noninverting Input Channel B
— 6 8 INB- Inverting Input Channel B
— 7 9 OUTB Amplifier Output Channel B
—— 5SHDNA Shutdown Channel A
—— 6SHDNB Shutdown Channel B
IN
R3
R3 = R1
⎪⎪
R2
R1 R2
VDD
IN
R3
R3 = R1
⎪⎪
R2
R1 R2
VDD
Figure 1a. Minimizing Offset Error Due to Input Bias Current
(Noninverting)
Figure 1b. Minimizing Offset Error Due to Input Bias Current
(Inverting)
MAX4245/MAX4246/MAX4247
input resistance is typically 4MΩ. For differential volt-
ages greater than 2.1V, input resistance is around
10.6kΩ, and the input bias current can be approximat-
ed by the following equation:
IB= (VDIFF - 2.1V) / 10.6kΩ
In the region where the differential input voltage
approaches 2.1V, the input resistance decreases expo-
nentially from 4MΩto 10.6kΩas the diodes begin to
conduct. It follows that the bias current increases with
the same curve.
In unity-gain configuration, high slew-rate input signals
may capacitively couple to the output through the
triple-diode stacks.
Rail-to-Rail Output Stage
The MAX4245/MAX4246/MAX4247 can drive a 2kΩ
load and still typically swing within 35mV of the supply
rails. Figure 3 shows the output voltage swing of the
MAX4245 configured with AV= -1V/V.
Applications Information
Power-Supply Considerations
The MAX4245/MAX4246/MAX4247 operate from a sin-
gle +2.5V to +5.5V supply (or dual ±1.25V to ±2.75V
supplies) and consume only 320µA of supply current
per amplifier. A 90dB power-supply rejection ratio
allows the amplifiers to be powered directly off a
decaying battery voltage, simplifying design and
extending battery life.
Power-Up
The MAX4245/MAX4246/MAX4247 output typically set-
tles within 4µs after power-up. Figure 4 shows the out-
put voltage on power-up and power-down.
Shutdown Mode
The MAX4245/MAX4247 feature a low-power shutdown
mode. When SHDN_ is pulled low, the supply current
drops to 50nA per amplifier, the amplifier is disabled,
and the output enters a high-impedance state. Pulling
SHDN_ high enables the amplifier. Figure 5 shows the
MAX4245/MAX4247’s shutdown waveform.
Due to the output leakage currents of three-state
devices and the small internal pullup current for SHDN_,
do not leave SHDN_ open/high-impedance. Leaving
SHDN_ open may result in indeterminate logic levels,
and could adversely affect op amp operation. The logic
threshold for SHDN_ is referred to VSS. When using dual
supplies, pull SHDN_ to VSS, not GND, to shut down the
op amp.
Driving Capacitive Loads
The MAX4245/MAX4246/MAX4247 are unity-gain stable
for loads up to 470pF. Applications that require greater
capacitive drive capability should use an isolation
resistor between the output and the capacitive load
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
8 _______________________________________________________________________________________
IN-
5.3kΩ
IN+
5.3kΩ
Figure 2. Input Protection Circuit
OUT
IN 2V/div
2V/div
400µs/div
Figure 3. Rail-to-Rail Input/Output Voltage Range
OUT
VDD
2V/div
2V/div
10µs/div
Figure 4. Power-Up/Power-Down Waveform
(Figures 6a, 6b, 6c). Note that this alternative results in
a loss of gain accuracy because RISO forms a voltage
divider with the RLOAD.
Power-Supply Bypassing and Layout
The MAX4245/MAX4246/MAX4247 family operates from
either a single +2.5V to +5.5V supply or dual ±1.25V to
±2.75V supplies. For single-supply operation, bypass
the power supply with a 100nF capacitor to VSS (in this
case GND). For dual-supply operation, both the VDD
and the VSS supplies should be bypassed to ground
with separate 100nF capacitors.
Good PC board layout techniques optimize perfor-
mance by decreasing the amount of stray capacitance
at the op amp’s inputs and output. To decrease stray
capacitance, minimize trace lengths and widths by
placing external components as close to the device as
possible. Use surface-mount components when possible.
Chip Information
PROCESS: BiCMOS
TOP VIEW
VDD
OUTB
INB-
INB+VSS
INA+
INA-
OUTA
µMAX
1
2
3
4
10
9
8
7
56SHDNA SHDNB
MAX4247
Pin Configurations (continued)
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
_______________________________________________________________________________________ 9
OUT
SHDN
2V/div
2V/div
400µs/div
Figure 5. Shutdown Waveform
OUT
IN
RISO
RLCL
Figure 6a. Using a Resistor to Isolate a Capacitive Load from
the Op Amp
OUT
IN
100mV/div
100mV/div
10µs/div
RISO = 0
RL = 2kΩ
CL = 2200pF
Figure 6b. Pulse Response Without Isolating Resistor
OUT
IN
100mV/div
100mV/div
10µs/div
RISO = 100Ω
RL = 2kΩ
CL = 2200pF
Figure 6c. Pulse Response With Isolating Resistor
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
10 ______________________________________________________________________________________
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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 TYPE PACKAGE CODE DOCUMENT NO. LAND PATTERN NO.
6 SOT23 U6+4 21-0058 90-0175
6 SC70 X6SN+1 21-0077 90-0189
8 SOT23 K8+5 21-0078 90-0176
8 SO S8+4 21-0041 90-0096
8 µMAX U8+1 21-0036 90-0092
10 µMAX U10+2 21-0061 90-0330
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
______________________________________________________________________________________ 11
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
12 ______________________________________________________________________________________
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
______________________________________________________________________________________ 13
0
0
MARKING
PACKAGE OUTLINE, SOT-23, 8L BODY
21-0078 J
1
1
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
14 ______________________________________________________________________________________
α
α
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
______________________________________________________________________________________ 15
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
16 ______________________________________________________________________________________
D
D
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.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.
MAX4245/MAX4246/MAX4247
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________
17
© 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 5/01 Initial release —
2 11/11 Added lead-free data to Ordering Information.1