19-4753; Rev 2; 2/10
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
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 MAX9618
is available in a 2mm x 2mm, 8-pin SC70 package and
features a power-saving shutdown mode. The MAX9620
is available in a 2mm x 2mm, 5-pin SC70 package. All
devices are specified over the -40NC to +125NC automo-
tive operating temperature range.
TION KIT
EVALUA BLE
AVAILA
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
0.42µV
P-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
MAX9617–MAX9620
Applications
Sensor Interfaces
Loop-Powered Systems
Portable Medical Devices
Battery-Powered Devices
Cardiac Monitors
PART
MAX9617AXT+
MAX9618AXA+
MAX9619AXT+
MAX9620AXK+
Ordering Information
TEMP RANGE
-40NC to +125NC
-40NC to +125NC
-40NC to +125NC
-40NC to +125NC
PIN-PACKAGE
6 SC70
8 SC70
6 SC70
5 SC70
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Functional Diagrams
TOP VIEW
IN+ 1
MAX9617
6 V
DD
OUTA 1
-
INA- 2
MAX9618
8 V
DD
7 OUTB
IN+ 1
MAX9619
6 V
DD
IN+ 1
MAX9620
5 V
DD
+
GND 2
-
5 V
DD
+
GND 2
-
5 SHDN GND 2
+
-
4 OUT
INA+ 3
4 OUT
GND 4
IN- 3
_______________________________________________________________
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.
+
-
+
6 INB-
5 INB+
IN- 3
4 OUT
IN- 3
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
DD
to GND).................................-0.3V to +6V
All Other Pins, IN+ to IN- .............(GND - 0.3V) to (V
DD
+ 0.3V)
Short-Circuit Duration to Either Supply Rail,
OUT, OUTA, OUTB............................................................ 10s
Continuous Input Current (any pins) ............................... ±20mA
Continuos Power Dissipation (T
A
= +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
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.
ELECTRICAL CHARACTERISTICS
(V
DD
= +3.3V, V
GND
= 0V, V
IN+
= V
IN-
= V
DD
/2, R
L
= 100kI to V
DD
/2, T
A
= -40NC to +125NC, unless otherwise noted. Typical values
are at +25NC.) (Note 1)
PARAMETER
POWER SUPPLY
Supply Voltage Range
Supply Current
(per Amplifier)
Power-Supply Rejection Ratio
(Note 2)
Power-Up Time
Shutdown Supply Current
Turn-On Time from Shutdown
(MAX9619)
DC SPECIFICATIONS
Input Offset Voltage (Note 2)
Input Offset Voltage Drift
(Note 2)
Input Bias Current (Note 2)
Input Offset Current
V
OS
DV
OS
I
B
I
OS
Guaranteed by
CMRR test
T
A
= +25NC
-40NC
P
T
A
P
+125NC
-0.1
-0.1
122
116
120
123
138
dB
160
135
dB
T
A
=+25NC
-40NC
P
T
A
P
+125NC
0.005
V
DD
+
0.1
V
DD
+
0.05
T
A
= +25NC
-40NC
P
T
A
P
+125NC
5
0.01
0.8
10
25
120
0.14
3.5
nA
FV
nV/NC
V
DD
I
DD
Guaranteed by PSRR, 0NC
P
T
A
P
+70NC
Guaranteed by PSRR, -40NC
P
T
A
P
+125NC
T
A
= +25NC
-40NC
P
T
A
P
+125NC
V
DD
= 1.8V to 5.5V
T
A
= +25NC
-40NC
P
T
A
P
+125NC
119
107
116
135
20
300
50
Fs
nA
Fs
135
dB
1.6
1.8
59
5.5
5.5
78
111
V
FA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PSRR
t
ON
I
SHDN
t
OSD
0NC
P
T
A
P
+70NC, V
DD
= 1.6V to 5.5V
V
DD
= 0V to 3V step, A
V
= 1V/V
MAX9619 only
V
DD
= 3.3V, V
SHDN
= 0V to 3.3V step
Input Common-Mode Range
V
CM
V
Common-Mode Rejection Ratio
(Note 2)
-0.1V
P
V
CM
P
V
DD
+ 0.1V, T
A
= +25NC
CMRR
-0.1V
P
V
CM
P
V
DD
+ 0.05V,
-40NC
P
T
A
P
+125NC
20mV
P
V
OUT
P
V
DD
- 20mV,
R
L
= 100kI to V
DD
/2
150mV
P
V
OUT
P
V
DD
- 150mV,
R
L
= 5kI to V
DD
/2
Open-Loop Gain (Note 2)
AV
OL
2
______________________________________________________________________________________
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +3.3V, V
GND
= 0V, V
IN+
= V
IN-
= V
DD
/2, R
L
= 100kI to V
DD
/2, T
A
= -40NC to +125NC, unless otherwise noted. Typical values
are at +25NC.) (Note 1)
PARAMETER
Input Resistance
SYMBOL
R
IN
Differential
Common mode
R
L
= 100kI to V
DD
/2
V
OH
Output-Voltage Swing
V
OL
Short-Circuit Current
AC SPECIFICATIONS
Gain-Bandwidth Product
Slew Rate
Input Voltage-Noise Density
Input Voltage Noise
Input Current-Noise Density
Phase Margin
Capacitive Loading
Crosstalk
LOGIC INPUT (MAX9619)
Shutdown Input Low
Shutdown Input High
Shutdown Input Leakage Current
V
IL
V
IH
I
IL
/I
IH
1.3
1
100
0.5
V
V
nA
C
L
i
n
GBWP
SR
e
n
0V
P
V
OUT
P
2V
f = 1kHz
0.1Hz
P
f
P
10Hz
f = 1kHz
C
L
= 20pF
No sustained oscillation, A
V
= 1V/V
f = 10kHz (MAX9618)
1.5
0.7
42
0.42
100
60
400
-100
MHz
V/Fs
nV/√Hz
FV
P-P
fA/√Hz
Degrees
pF
dB
I
SC
V
OUT
V
DD
- V
OUT
R
L
= 5kI to V
DD
/2
R
L
= 600I to V
DD
/2
R
L
= 100kI to V
DD
/2
R
L
= 5kI to V
DD
/2
R
L
= 600I to V
DD
/2
50
150
mA
50
11
18
CONDITIONS
MIN
TYP
50
200
12
22
mV
MAX
UNITS
MI
MAX9617–MAX9620
Note 1:
Specifications are 100% tested at T
A
= +25NC (exceptions noted). All temperature limits are guaranteed by design.
Note 2:
Guaranteed by design.
Typical Operating Characteristics
(V
DD
= +3.3V, V
GND
= 0V, outputs have R
L
= 100kI connected to V
DD
/2. T
A
= +25NC, unless otherwise specified.)
OFFSET VOLTAGE HISTOGRAM
MAX9617 toc01
INPUT OFFSET VOLTAGE
DRIFT HISTOGRAM
18
16
FREQUENCY (%)
14
12
10
8
6
4
2
0
MAX9617 toc02
25
20
FREQUENCY (%)
15
10
5
0
0
1
2
3
OFFSET VOLTAGE (FV)
4
20
-0.03 -0.02 -0.01
0
0.01 0.02 0.03 0.04
OFFSET VOLTAGE DRIFT (FV/NC)
_______________________________________________________________________________________
3
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
MAX9617–MAX9620
Typical Operating Characteristics (continued)
(V
DD
= +3.3V, V
GND
= 0V, outputs have R
L
= 100kI connected to V
DD
/2. T
A
= +25NC, unless otherwise specified.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9617 toc03
SUPPLY CURRENT
vs. TEMPERATURE
90
80
SUPPLY CURRENT (FA)
70
60
50
40
30
20
10
0
MAX9617 toc04
INPUT OFFSET VOLTAGE
vs. INPUT COMMON MODE
MAX9617 toc05
120
100
SUPPLY CURRENT (FA)
80
60
40
20
0
1.6
2.1
2.6
3.1
3.6
4.1
4.6
5.1
T
A
= +25NC
T
A
= -40NC
100
6
5
4
V
OS
(FV)
T
A
= -40NC
3
T
A
= +25NC
2
1
0
T
A
= +125NC
T
A
= +125NC
5.6
-50
-25
0
25
50
75
100
125
-0.1
0.4
SUPPLY VOLTAGE (V)
TEMPERATURE (NC)
0.9 1.4 1.9 2.4 2.9
INPUT COMMON MODE (V)
3.4
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9617 toc06
INPUT BIAS CURRENT
vs. INPUT COMMON MODE
MAX9617 toc07
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
120
100
CMRR (dB)
80
60
40
20
MAX9617 toc08
6
5
4
V
OS
(FV)
3
2
1
0
-50
-25
0
25
50
75
100
300
250
INPUT BIAS CURRENT (pA)
200
150
100
50
0
INVERTING INPUT
-0.1
0.4
0.9
1.4
1.9
2.4
2.9
NONINVERTING INPUT
140
125
3.4
0
0.1
1
10
100
1k
10k 100k 1M 10M
FREQUENCY (Hz)
TEMPERATURE (NC)
INPUT COMMON MODE (V)
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
MAX9617 toc09
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9617 toc10
OUTPUT-VOLTAGE SWING HIGH
vs. TEMPERATURE
0.38
0.36
0.34
V
OH
(mV)
0.32
0.30
0.28
0.26
0.24
0.22
0.20
MAX9617 toc11
140
120
100
80
60
140
120
100
0.40
CMRR (dB)
PSRR (dB)
80
60
40
20
40
-50
-25
0
25
50
75
100
125
TEMPERATURE (NC)
0
0.1
1
10
100
1k
10k 100k 1M 10M
FREQUENCY (Hz)
-50
-25
0
25
50
75
100
125
TEMPERATURE (NC)
4
______________________________________________________________________________________
Single/Dual SC70, Zero-Drift,
High-Efficiency, 1.5MHz Op Amps with RRIO
Typical Operating Characteristics (continued)
(V
DD
= +3.3V, V
GND
= 0V, outputs have R
L
= 100kI connected to V
DD
/2. T
A
= +25NC, unless otherwise specified.)
MAX9617–MAX9620
OUTPUT-VOLTAGE SWING LOW
vs. TEMPERATURE
MAX9617 toc12
OPEN-LOOP GAIN vs. FREQUENCY
MAX9617 toc13
INPUT VOLTAGE NOISE vs. FREQUENCY
MAX9617 toc14
0.40
0.38
0.36
0.34
V
OL
(mV)
0.32
0.30
0.28
0.26
0.24
0.22
0.20
-50
-25
0
25
50
75
100
160
140
120
OPEN LOOP GAIN (dB)
100
80
60
40
20
0
-20
-40
-10m 100m 1
10,000
INPUT VOLTAGE NOISE (nV/√Hz)
1000
100
10
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
0.1
1
10
100
1k
10k
100k
FREQUENCY (Hz)
125
TEMPERATURE (NC)
INPUT VOLTAGE 0.1Hz TO 10Hz NOISE
MAX9617 toc15
INPUT CURRENT NOISE
vs. FREQUENCY
MAX9617 toc16
1000
INPUT CURRENT NOISE (fA/√Hz)
0.1FV/div
100
10
1s/div
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
SMALL-SIGNAL GAIN
vs. FREQUENCY
MAX9617 toc17
LARGE-SIGNAL GAIN
vs. FREQUENCY
MAX9617 toc18
SMALL-SIGNAL STEP RESPONSE
vs. TIME
MAX9617 toc19
5
0
SMALL-SIGNAL GAIN (dB)
-5
-10
-15
-20
-25
-30
-35
10
100
1k
10k
100k
10
2V
P-P
0
LARGE-SIGNAL GAIN (dB)
-10
-20
-30
-40
-50
100mV
P-P
100mV
P-P
50mV/div
1M
10M
10
100
1k
10k
100k
1M
10M
100Fs/div
FREQUENCY (kHz)
FREQUENCY (kHz)
_______________________________________________________________________________________
5
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