_______________________________________________________________ Maxim Integrated Products 1
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.
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
General Description
The MAX9617–MAX9620 are low-power, zero-drift oper-
ational amplifiers available in space-saving SC70 pack-
ages. They are designed for use in portable consumer,
medical, and industrial applications.
The MAX9617–MAX9620 feature rail-to-rail CMOS inputs
and outputs, a 1.5MHz GBW at just 59FA supply current
and 10FV (max) zero-drift input offset voltage over time
and temperature. The zero-drift feature reduces the high
1/f noise typically found in CMOS input operational ampli-
fiers, making it useful for a wide variety of low-frequency
measurement applications.
The MAX9617 and MAX9619 are available in a space-
saving, 2mm x 2mm, 6-pin SC70 package. The MAX9619
features a power-saving shutdown mode. The MAX9618
is available in a 2mm x 2mm, 8-pin SC70 package. The
MAX9620 is available in a 2mm x 2mm, 5-pin SC70
package. All devices are specified over the -40NC to
+125NC automotive operating temperature range.
Applications
Sensor Interfaces
Loop-Powered Systems
Portable Medical Devices
Battery-Powered Devices
Cardiac Monitors
Features
S Low 59µA Quiescent Current
S Very-Low 10µV (max) Input Offset Voltage
S Dual Version Available in an 8-Pin SC70 Package
S Low Input Noise
42nV/√Hz at 1kHz
0.42µVP-P from 0.1Hz to 10Hz
S Rail-to-Rail Inputs and Outputs
S 1.5MHz GBW
S Ultra-Low 10pA Input Bias Current
S Single 1.8V to 5.5V Supply Voltage Range
S Unity-Gain Stable
S Power-Saving Shutdown Mode (MAX9619)
S Available in Tiny 5-Pin SC70 (MAX9620), 6-Pin
SC70 (MAX9617/MAX9619), and 8-Pin SC70
(MAX9618) Packages
19-4753; Rev 5; 7/11
Functional Diagrams
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
EVALUATION KIT
AVAILABLE
TOP VIEW
MAX9617
IN-
GND
1
2
IN+
3OUT
6
5
VDD
VDD
4
MAX9618
GND
INA-
INA+
1
2
OUTA
4INB+
OUTB
INB-
8
7
VDD
5
36
+
-
+
-
-
+
MAX9619
IN-
GND
1
2
IN+
3OUT
6
5
VDD
4
SHDN
+
-
MAX9620
IN-
GND
1
2
IN+
3OUT
5VDD
4
+
-
PART TEMP RANGE PIN-PACKAGE
MAX9617AXT+ -40NC to +125NC6 SC70
MAX9618AXA+ -40NC to +125NC8 SC70
MAX9619AXT+ -40NC to +125NC6 SC70
MAX9620AXK+ -40NC to +125NC5 SC70
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
2 ______________________________________________________________________________________
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.
IN+, IN-, SHDN, (VDD to GND) ...............................-0.3V to +6V
OUT to GND ............................................. -0.3V to (VDD + 0.3V)
Short-Circuit Duration to Either Supply Rail,
OUT, OUTA, OUTB ............................................................ 10s
Continuous Input Current (any pins) ............................... ±20mA
Continuos Power Dissipation (TA = +70NC)
5-Pin SC70 (derate 3.1mW/NC above +70NC) ............. 247mW
6-Pin SC70 (derate 3.1mW/NC above +70NC) .......... 245.4mW
8-Pin SC70 (derate 3.1mW/NC above +70NC) ............. 245mW
Operating Temperature Range ........................ -40NC to +125NC
Junction Temperature .....................................................+150NC
Storage Temperature Range ............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
ELECTRICAL CHARACTERISTICS
(VDD = +3.3V, VGND = 0V, VIN+ = VIN- = VDD/2, RL = 100kI to VDD/2, TA = -40NC to +125NC, unless otherwise noted. Typical values
are at +25NC.) (Note 1)
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Supply Voltage Range VDD Guaranteed by PSRR, 0NC P TA P +70NC1.6 5.5 V
Guaranteed by PSRR, -40NC P TA P +125NC1.8 5.5
Supply Current
(per Amplifier) IDD TA = +25NC59 78 FA
-40NC P TA P +125NC111
Power-Supply Rejection Ratio
(Note 2) PSRR VDD = 1.8V to 5.5V TA = +25NC119 135
dB
-40NC P TA P +125NC107
0NC P TA P +70NC, VDD = 1.6V to 5.5V 116 135
Power-Up Time tON VDD = 0V to 3V step, AV = 1V/V 20 Fs
Shutdown Supply Current ISHDN MAX9619 only 300 nA
Turn-On Time from Shutdown
(MAX9619) tOSD VDD = 3.3V, V SHDN = 0V to 3.3V step 50 Fs
DC SPECIFICATIONS
Input Offset Voltage (Note 2) VOS TA = +25NC0.8 10 FV
-40NC P TA P +125NC25
Input Offset Voltage Drift (Note 2) DVOS 5 120 nV/NC
Input Bias Current (Note 2) IB
TA =+25NC31 80
pA
-40NC P TA P +85NC95
-40NC P TA P +125NC580
Input Offset Current IOS 5 pA
Input Common-Mode Range VCM Guaranteed by
CMRR test
TA = +25NC-0.1 VDD + 0.1 V
-40NC P TA P +125NC-0.1 VDD + 0.05
Common-Mode Rejection Ratio
(Note 2) CMRR
-0.1V P VCM P VDD + 0.1V, TA = +25NC122 135
dB
-0.1V P VCM P VDD + 0.05V,
-40NC P TA P +125NC116
Open-Loop Gain (Note 2) AVOL
20mV P VOUT P VDD - 20mV,
RL = 100kI to VDD/2 120 138
dB
150mV P VOUT P VDD - 150mV,
RL = 5kI to VDD/2 123 160
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +3.3V, VGND = 0V, VIN+ = VIN- = VDD/2, RL = 100kI to VDD/2, TA = -40NC to +125NC, unless otherwise noted. Typical values
are at +25NC.) (Note 1)
Note 1: Specifications are 100% tested at TA = +25NC (exceptions noted). All temperature limits are guaranteed by design.
Note 2: Guaranteed by design.
Typical Operating Characteristics
(VDD = +3.3V, VGND = 0V, outputs have RL = 100kI connected to VDD/2. TA = +25NC, unless otherwise specified.)
OFFSET VOLTAGE HISTOGRAM
MAX9617 toc01
OFFSET VOLTAGE (FV)
FREQUENCY (%)
4321
5
10
15
20
25
0
0
INPUT OFFSET VOLTAGE
DRIFT HISTOGRAM
MAX9617 toc02
OFFSET VOLTAGE DRIFT (FV/NC)
FREQUENCY (%)
0.01 0.02 0.03 0.04-0.02 -0.01 0
2
4
6
8
10
12
14
16
18
20
0
-0.03
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Resistance RIN Differential 50 MI
Common mode 200
Output-Voltage Swing
VOH VDD - VOUT
RL = 100kI to VDD/2 12
mV
RL = 5kI to VDD/2 22
RL = 600I to VDD/2 50
VOL VOUT
RL = 100kI to VDD/2 11
RL = 5kI to VDD/2 18
RL = 600I to VDD/2 50
Short-Circuit Current ISC 150 mA
AC SPECIFICATIONS
Gain-Bandwidth Product GBWP 1.5 MHz
Slew Rate SR 0V P VOUT P 2V 0.7 V/Fs
Input Voltage-Noise Density enf = 1kHz 42 nV/√Hz
Input Voltage Noise 0.1Hz P f P 10Hz 0.42 FVP-P
Input Current-Noise Density inf = 1kHz 100 fA/√Hz
Phase Margin CL = 20pF 60 Degrees
Capacitive Loading CLNo sustained oscillation, AV = 1V/V 400 pF
Crosstalk f = 10kHz (MAX9618) -100 dB
LOGIC INPUT (MAX9619)
Shutdown Input Low VIL 0.5 V
Shutdown Input High VIH 1.3 V
Shutdown Input Leakage Current IIL/IIH 1 100 nA
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
4 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = +3.3V, VGND = 0V, outputs have RL = 100kI connected to VDD/2. TA = +25NC, unless otherwise specified.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9617 toc03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (FA)
5.14.64.13.63.12.62.1
20
40
60
80
100
120
0
1.6 5.6
TA = +125NC
TA = +25NC
TA = -40NC
SUPPLY CURRENT
vs. TEMPERATURE
MAX9617 toc04
TEMPERATURE (NC)
SUPPLY CURRENT (FA)
1007525 500-25
10
20
30
40
50
60
70
80
90
100
0
-50 125
INPUT OFFSET VOLTAGE
vs. INPUT COMMON MODE
MAX9617 toc05
INPUT COMMON MODE (V)
VOS (FV)
2.92.41.91.40.90.4
1
2
3
4
5
6
0
-0.1 3.4
TA = -40NC
TA = +25NC
TA = +125NC
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9617 toc06
TEMPERATURE (NC)
VOS (FV)
1007550250-25
1
2
3
4
5
6
0
-50 125
INPUT BIAS CURRENT
vs. INPUT COMMON MODE
MAX9617 toc07
INPUT COMMON MODE (V)
INPUT BIAS CURRENT (pA)
2.92.41.91.40.90.4
50
100
150
200
250
300
0
-0.1 3.4
NONINVERTING INPUT
INVERTING INPUT
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX9617 toc08
FREQUENCY (Hz)
CMRR (dB)
1M100k10k1k100101
20
40
60
80
100
120
140
0
0.1 10M
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
MAX9617 toc09
TEMPERATURE (NC)
CMRR (dB)
1007550250-25
60
80
100
120
140
40
-50 125
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9617 toc10
FREQUENCY (Hz)
PSRR (dB)
1M100k10k1k100101
20
40
60
80
100
120
140
0
0.1 10M
OUTPUT-VOLTAGE SWING HIGH
vs. TEMPERATURE
MAX9617 toc11
TEMPERATURE (NC)
VOH (mV)
1007525 500-25
0.22
0.24
0.26
0.28
0.30
0.32
0.34
0.36
0.38
0.40
0.20
-50 125
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(VDD = +3.3V, VGND = 0V, outputs have RL = 100kI connected to VDD/2. TA = +25NC, unless otherwise specified.)
OUTPUT-VOLTAGE SWING LOW
vs. TEMPERATURE
MAX9617 toc12
TEMPERATURE (NC)
VOL (mV)
1007525 500-25
0.22
0.24
0.26
0.28
0.30
0.32
0.34
0.36
0.38
0.40
0.20
-50 125
OPEN-LOOP GAIN vs. FREQUENCY
MAX9617 toc13
FREQUENCY (Hz)
OPEN LOOP GAIN (dB)
100k10k100 1k110100m
-20
0
20
40
60
80
100
120
140
160
-40
-10m 1M 10M
INPUT VOLTAGE NOISE vs. FREQUENCY
MAX9617 toc14
FREQUENCY (Hz)
INPUT VOLTAGE NOISE (nV/√Hz)
10k1k100101
100
1000
10,000
10
0.1 100k
INPUT VOLTAGE 0.1Hz TO 10Hz NOISE
MAX9617 toc15
0.1FV/div
1s/div
INPUT CURRENT NOISE
vs. FREQUENCY
MAX9617 toc16
FREQUENCY (Hz)
INPUT CURRENT NOISE (fA/√Hz)
110 100 1k
100
1000
10
0.1 10k
SMALL-SIGNAL GAIN
vs. FREQUENCY
MAX9617 toc17
FREQUENCY (kHz)
SMALL-SIGNAL GAIN (dB)
1M100k100 1k 10k
-30
-25
-20
-15
-10
-5
0
5
-35
10 10M
100mVP-P
LARGE-SIGNAL GAIN
vs. FREQUENCY
MAX9617 toc18
FREQUENCY (kHz)
LARGE-SIGNAL GAIN (dB)
1M100k10k1k100
-40
-30
-20
-10
0
10
-50
10 10M
2VP-P
MAX9617 toc19
50mV/div
100Fs/div
SMALL-SIGNAL STEP RESPONSE
vs. TIME
100mVP-P
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
6 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = +3.3V, VGND = 0V, outputs have RL = 100kI connected to VDD/2. TA = +25NC, unless otherwise specified.)
Pin Description
CAPACITIVE LOAD
vs. ISOLATION RESISTOR
MAX9617 toc21
ISOLATION RESISTOR (I)
CAPACITENCE (pF)
100101
100
1000
10,000
0.1 1000
VIN = 100mVP-P
AV = 1V/V
UNSTABLE
POWER-UP TIME
MAX9617 toc22
OUT
1V/div
SHDN
1V/div
20Fs/div
PIN NAME FUNCTION
MAX9617 MAX9618 MAX9619 MAX9620
1 — 1 1 IN+ Positive Input
2 4 2 2 GND Ground
3 — 3 3 IN- Negative Input
4 — 4 4 OUT Output
5, 6 8 6 5 VDD Positive Supply Voltage. Bypass to GND with a 0.1FF capacitor.
— — 5 — SHDN Shutdown. Pull shutdown low to activate shutdown mode.
— 1 — — OUTA Channel A Output
— 2 — — INA- Channel A Negative Input
— 3 — — INA+ Channel A Positive Input
— 5 — — INB+ Channel B Positive Input
— 6 — — INB- Channel B Negative Input
— 7 — — OUTB Channel B Output
MAX9617 toc20
500mV/div
100Fs/div
LARGE-SIGNAL STEP RESPONSE
vs. TIME
100mVP-P
Pin Configurations
SC70
TOP VIEW
MAX9617
IN-
GND
1
2
IN+
3OUT
6
5
VDD
4
+
VDD
SC70
MAX9618
GND
INA-
INA+
1
2
OUTA
4INB+
OUTB
INB-
8
7
VDD
5
36
+
SC70
MAX9619
IN-
GND
1
2
IN+
3OUT
6
5
VDD
4
+
SHDN
SC70
MAX9620
IN-
GND
1
2
IN+
3OUT
5VDD
4
+
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
_______________________________________________________________________________________ 7
Detailed Description
The MAX9617–MAX9620 are precision, low-power op
amps ideal for signal processing applications. The
MAX9617, MAX9619, and MAX9620 are single-channel
devices. The MAX9618 is a dual-channel device. These
devices use an innovative autozero technique that allows
precision and low noise with a minimum amount of
power. The low input offset voltage, CMOS inputs, and
the absence of 1/f noise allows for optimization of active
filter designs.
The MAX9617–MAX9620 achieve rail-to-rail performance
at the input through the use of a low-noise charge pump.
This ensures a glitch-free, common-mode input voltage
range extending from the negative supply rail up to
the positive supply rail, eliminating crossover distortion
common to traditional n-channel/p-channel CMOS pair
inputs, reducing harmonic distortion at the output.
The MAX9619 features a shutdown mode that greatly reduc-
es quiescent current when the device is not operational.
Autozero
The MAX9617–MAX9620 feature an autozero circuit that
allows the device to achieve less than 10FV (max) of
input offset voltage and eliminates the 1/f noise.
Internal Charge Pump
An internal charge pump provides an internal supply typi-
cally 1V beyond the upper rail. This internal rail allows the
MAX9617–MAX9620 to achieve true rail-to-rail inputs and
outputs, while providing excellent common-mode rejec-
tion, power-supply rejection ratios, and gain linearity.
The charge pump requires no external components, and
in most applications is entirely transparent to the user.
The operating frequency is well beyond the unity-gain
frequency of the amplifier, avoiding aliasing or other sig-
nal integrity issues in sensitive applications.
Shutdown Operation
The MAX9619 features an active-low shutdown mode
that lowers the quiescent current to less than 300nA. In
shutdown mode, the inputs and output are high imped-
ance. This allows multiple devices to be multiplexed
onto a single line without the use of external buffers. Pull
SHDN high for normal operation.
The shutdown high (VIH) and low (VIL) threshold voltages
are designed for ease of integration with digital con-
trols like microcontroller outputs. These thresholds are
independent of supply, eliminating the need for external
pulldown circuitry.
Applications Information
The MAX9617–MAX9620 low-power, low-noise, and
precision operational amplifiers are designed for appli-
cations in the portable medical, such as ECG and pulse
oximetry, portable consumer, and industrial markets.
The MAX9617–MAX9620 are also ideal for loop-powered
systems that interface with pressure sensors or strain
gauges.
Capacitive-Load Stability
Driving large capacitive loads can cause instability in
many op amps. The MAX9617–MAX9620 are stable
with capacitive loads up to 400pF. Stability with higher
capacitive loads can be improved by adding an isolation
resistor in series with the op-amp output. This resistor
improves the circuit’s phase margin by isolating the load
capacitor from the amplifier’s output. The graph in the
Typical Operating Characteristics gives the stable oper-
ation region for capacitive load versus isolation resistors.
Figure 1. Typical Application Circuit: Sallen-Key Active Lowpass Filter
MAX9617 ADC
+5V
VIN
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
8 ______________________________________________________________________________________
Power Supplies and Layout
The MAX9617–MAX9620 operate either with a single
supply from +1.6V to +5.5V with respect to ground or
with dual supplies from Q0.8V to Q2.75V. When used with
dual supplies, bypass both supplies with their own 0.1FF
capacitor to ground. When used with a single supply,
bypass VDD with a 0.1FF capacitor to ground.
Careful layout technique helps optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capaci-
tance, minimize trace lengths by placing external com-
ponents close to the op amp’s pins.
Chip Information
PROCESS: BiCMOS
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
_______________________________________________________________________________________ 9
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 OUTLINE NO. LAND PATTERN NO.
5 SC70 X5+1 21-0076 90-0188
6 SC70 X6SN+1 21-0077 90-0189
8 SC70 X8C+1 21-0460 90-0348
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
10 _____________________________________________________________________________________
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.
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
______________________________________________________________________________________ 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.
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
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.
12 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 7/09 Initial release —
1 9/09 Removed references to MAX9617 shutdown functionality 1, 2, 3, 6, 7
2 2/10 Removed future product reference for the MAX9618, and added MAX9619 and
MAX9620 to the data sheet 1–11
3 6/10 Corrected General Description to show that only the MAX9619 has shutdown,
corrected the MAX9617 Pin Configuration, and added soldering temperature 1, 2, 12
4 2/11 Updated bias current specifications 2
5 7/11 Updated input and shutdown specs in the Absolute Maximum Ratings 2
