19-2279; Rev 4; 3/06
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
MAX4460/MAX4461/MAX4462
General Description
The MAX4460/MAX4461/MAX4462 are instrumentation
amplifiers with precision specifications, low-power con-
sumption, and excellent gain-bandwidth product.
Proprietary design techniques allow ground-sensing
capability combined with ultra-low input current and
increased common-mode rejection performance. These
rail-to-rail output instrumentation amplifiers are offered in
fixed or adjustable gains and the option for either a shut-
down mode or a pin to set the output voltage relative to
an external reference (see the
Ordering Information
and
Selector Guide).
The MAX4460 has an adjustable gain and uses ground
as its reference voltage. The MAX4461 is offered in fixed
gains of 1, 10, and 100, uses ground as its reference volt-
age, and has a logic-controlled shutdown input. The
MAX4462 is offered in fixed gains of 1, 10, and 100 and
has a reference input pin (REF). REF sets the output volt-
age for zero differential input to allow bipolar signals in
single-supply applications.
The MAX4460/MAX4461/MAX4462 have high-impedance
inputs optimized for small-signal differential voltages. The
MAX4461/MAX4462 are factory trimmed to gains of 1, 10,
or 100 (suffixed U, T, and H) with ±0.1% accuracy. The
typical offset of the MAX4460/MAX4461/MAX4462 is
100µV. All devices have a gain-bandwidth product of
2.5MHz.
These amplifiers operate with a single-supply voltage
from 2.85V to 5.25V and with a quiescent current of only
700µA (less than 1µA in shutdown for the MAX4461). The
MAX4462 can also be operated with dual supplies.
Smaller than most competitors, the MAX4460/
MAX4461/MAX4462 are available in space-saving 6-pin
SOT23 and TDFN packages.
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
Features
Tiny 6-Pin SOT23 and TDFN Packages
Input Negative Rail Sensing
1pA (typ) Input Bias Current
100µV Input Offset Voltage
Rail-to-Rail Output
2.85V to 5.25V Single Supply
700µA Supply Current
±0.1% Gain Error
2.5MHz Gain-Bandwidth Product
18nV/√Hz Input-Referred Noise
Ordering Information
PART
MAX4460ETT+T
MAX4460EUT-T
MAX4460ESA
MAX4461UETT+T
MAX4461UEUT-T
MAX4461UESA
MAX4461TETT+T
MAX4461TEUT-T
MAX4461TESA
MAX4461HETT+T
MAX4461HEUT-T
MAX4461HESA
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 TDFN-EP*
6 SOT23-6
8 SO
6 TDFN-EP*
6 SOT23-6
8 SO
6 TDFN-EP*
6 SOT23-6
8 SO
6 TDFN-EP*
6 SOT23-6
8 SO
TOP
MARK
+ANI
AASS
—
+ANJ
AAST
—
+ANK
AASU
—
+ANL
AASV
—
________________________Applications
Industrial Process Control
Strain-Gauge Amplifiers
Transducer Interface
Precision Low-Side Current Sense
Low-Noise Microphone Preamplifier
Differential Voltage Amplification
Battery-Powered Medical Equipment
Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
+Denotes
lead-free package.
*EP
= Exposed paddle.
Ordering Information continued at end of data sheet.
Typical Application Circuits
V
CC
V
CM
+
∆V
3
5
MAX4462
1
V
CM
-
∆V
4
2
6
OUT
REF
Typical Application Circuits continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
MAX4460/MAX4461/MAX4462
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
DD
to V
SS
) ...................................-0.3V to +6V
All Other Pins ...................................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
Output Short-Circuit Duration to Either Supply.........................1s
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............695mW
6-Pin TDFN-EP (derate 18.2mW/°C above +70°C) ....1454mW
8-Pin SO (derate 5.9mW/°C above +70°C)..................470mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s)....................................300°C
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—MAX4460/MAX4461
(V
DD
= 5V, V
CM
= 0V, V
DIFF
= V
IN+
- V
IN-
= 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G =100,
MAX4460 is configured for G = 10, R
L
= 200kΩ to GND,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
Shutdown Supply Current
Input Offset Voltage (Note 1)
V
OS
SYMBOL
V
DD
CONDITIONS
Guaranteed by PSRR test
V
DD
= 5V, V
DIFF
= 0V
V
DD
= 3V, V
DIFF
= 0V
MAX4461,
SHDN
= GND
MAX4460ESA
MAX4461ESA
MAX446_EUT/MAX446_ETT
Input Resistance
Input Common-Mode Range
Input Common-Mode
Rejection Ratio
Power-Supply Rejection Ratio
Input Bias Current
FB Input Current
V
IH
SHDN
Logic Levels
V
IL
SHDN
Input Current
Input Voltage Noise
e
n
V
OH
Output Voltage Swing
V
OL
Short-Circuit Current
I
SC
MAX4461
MAX4461, V
SHDN
= 0V or V
DD
(Note 2)
f = 10kHz
f = 1kHz
V
DD
- V
OH
(Note 3)
R
L
= 200kΩ
R
L
= 20kΩ
(Note 4)
R
L
= 200kΩ
R
L
= 20kΩ
1
18
38
1
3
0
0
±150
2.5
5
0.2
0.2
mA
mV
R
IN
V
CM
CMRR
PSRR
I
B
V
CM
= V
DD
/2
Guaranteed by CMRR test
V
CM
= -0.1V to (V
DD
- 1.7V)
V
DD
= 2.85V to 5.25V
(Note 2)
MAX4460 (Note 2)
MAX4461
0.7 X
V
DD
0.3 X
V
DD
100
pA
nV/√Hz
Differential mode
Common mode
-0.1
90
80
120
100
1
1
100
100
V
DD
= 5V
MIN
2.85
0.80
0.68
0.1
±50
±50
±100
2
2
V
DD
-
1.7
TYP
MAX
5.25
1.1
0.9
1
±425
±300
±600
GΩ
V
dB
dB
pA
pA
µV
UNITS
V
mA
µA
V
2
_______________________________________________________________________________________
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
ELECTRICAL CHARACTERISTICS—MAX4460/MAX4461 (continued)
(V
DD
= 5V, V
CM
= 0V, V
DIFF
= V
IN+
- V
IN-
= 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G =100,
MAX4460 is configured for G = 10, R
L
= 200kΩ to GND,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
G = 1V/V, MAX4461UESA
G = 10V/V, MAX4461TESA
Gain Error
R
L
= 20kΩ
G = 100V/V, MAX4461HESA
G = 10V/V, MAX4460ESA
MAX446_EUT/MAX446_ETT
Nonlinearity (Note 1)
Maximum Capacitive Load
-3dB Bandwidth
Gain-Bandwidth Product
Slew Rate
C
L
BW
-3dB
GBWP
SR
R
L
= 20kΩ
No sustained oscillations
G = 1V/V, MAX4461U
C
L
= 100pF
C
L
= 100pF
G = 1V/V
C
L
= 100pF
G = 10V/V
G = 100V/V
Settling Time
t
S
C
L
= 100pF, G = 1V/V
within 0.1% of G = 10V/V
final value
G = 100V/V
G = 10V/V, MAX4461T
G = 100V/V, MAX4461H
MIN
TYP
0.1
0.12
0.15
0.15
0.15
0.05
100
2500
250
25
2.5
0.5
0.5
0.25
15
75
250
µs
V/µs
MHz
kHz
MAX
0.3
0.35
0.6
0.35
0.6
0.15
%
pF
%
UNITS
MAX4460/MAX4461/MAX4462
ELECTRICAL CHARACTERISTICS—MAX4460/MAX4461
(V
DD
= 5V, V
CM
= 0V, V
DIFF
= V
IN+
- V
IN-
= 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G = 100,
MAX4460 is configured for G = 10, R
L
= 200kΩ to GND,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
Shutdown Supply Current
SYMBOL
V
DD
CONDITIONS
Guaranteed by PSRR test
V
DD
= 5V, V
DIFF
= 0V
V
DD
= 3V, V
DIFF
= 0V
MAX4461,
SHDN
= GND
MAX4460ESA
V
DD
= 5V
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
G=1
T
A
= 0°C to
+85°C
Input Offset Voltage (Note 1)
V
OS
MAX4461ESA
T
A
= -40°C to
+85°C
MAX446_EUT/
MAX446_ETT
Input Offset-Voltage Drift
TC
VOS
(Note 1)
G = 10
G = 100
G=1
G = 10
G = 100
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
1.5
MIN
2.85
TYP
MAX
5.25
1.4
1.15
1
±750
±950
±750
±500
±500
±950
±750
±750
±1400
±1900
µV/°C
µV
UNITS
V
mA
µA
_______________________________________________________________________________________
3
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
MAX4460/MAX4461/MAX4462
ELECTRICAL CHARACTERISTICS—MAX4460/MAX4461 (continued)
(V
DD
= 5V, V
CM
= 0V, V
DIFF
= V
IN+
- V
IN-
= 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G = 100,
MAX4460 is configured for G = 10, R
L
= 200kΩ to GND,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Input Common-Mode Range
Input Common-Mode Rejection
Ratio
Power-Supply Rejection Ratio
Input Bias Current
FB Input Current
V
IH
SHDN
Logic Levels
V
IL
SHDN
Input Current
V
OH
Output Voltage Swing
V
OL
MAX4461
MAX4461, V
SHDN
= 0V or V
DD
(Note 2)
V
DD
- V
OH
(Note 3)
R
L
= 200kΩ
R
L
= 20kΩ
MAX4461UESA,
R
L
= 20kΩ
MAX4461TESA,
R
L
= 20kΩ
Gain Error
MAX4461HESA,
R
L
= 20kΩ
MAX4460ESA,
R
L
= 20kΩ
MAX446_EUT/
MAX446_ETT,
R
L
= 20kΩ
Nonlinearity
R
L
= 20kΩ
(Note 1)
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
T
A
= 0°C to +85°C
T
A
= -40°C to +85°C
R
L
= 200kΩ
R
L
= 20kΩ
SYMBOL
V
CM
CMRR
PSRR
I
B
CONDITIONS
Guaranteed by CMRR test
V
CM
= -0.1V to (V
DD
- 1.85V)
V
DD
= 2.85V to 5.25V
(Note 2)
MAX4460 (Note 2)
MAX4461
0.7 X
V
DD
0.3 X
V
DD
100
4
8
0.25
0.25
0.8
1.6
0.8
1.7
1.0
2.0
0.8
2.0
1.8
3.0
0.20
0.25
%
%
mV
pA
MIN
-0.1
80
75
100
100
TYP
MAX
V
DD
-
1.85
UNITS
V
dB
dB
pA
pA
V
4
_______________________________________________________________________________________
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
ELECTRICAL CHARACTERISTICS—MAX4462
(V
DD
= 5V, V
SS
= 0V, V
CM
= V
REF
= V
DD
/2, R
L
= 100kΩ to V
DD
/2,
T
A
= +25°C,
unless otherwise noted. V
DIFF
= V
IN+
- V
IN-
= -100mV
to +100mV for G = 1 and G = 10, -20mV to +20mV for G = 100.)
PARAMETER
Supply Voltage
Supply Current
Input Offset Voltage (Note 1)
Input Resistance
Input Common-Mode Range
REF Input Range
Input Common-Mode
Rejection Ratio
REF Input Rejection Ratio
Power-Supply Rejection Ratio
Input Bias Current
Input Voltage Noise
PSRR
I
B
e
N
V
OH
Output Voltage Swing
V
OL
Short-Circuit Current
I
SC
V
OL
- V
SS
(Note 3)
(Note 4)
G = 1V/V, MAX4462UESA
Gain Error
R
L
= 10kΩ
G = 10V/V, MAX4462TESA
G = 100V/V, MAX4462HESA
MAX4462_EUT/MAX4462_ETT
Nonlinearity
R
L
= 10kΩ
CMRR
V
OS
R
IN
V
CM
SYMBOL
V
DD
CONDITIONS
Guaranteed by PSRR test
V
DD
= 5V, V
DIFF
= 0V
V
DD
= 3V, V
DIFF
= 0V
MAX4462_ESA
MAX4462_EUT/MAX4462_ETT
V
CM
= V
DD
/2
Differential mode
Common mode
V
SS
-
0.1
V
SS
+
0.1
90
85
80
120
100
100
1
18
38
R
L
= 100kΩ
R
L
= 10kΩ
R
L
= 100kΩ
R
L
= 10kΩ
1
3
2
6
±150
0.1
0.12
0.15
0.15
0.05
0.30
0.35
0.5
0.5
0.15
%
%
2.5
5
4
12
mA
mV
100
MIN
2.85
0.8
0.68
±50
±100
2
2
V
DD
-
1.7
V
DD
-
1.7
TYP
MAX
5.25
1.1
0.9
±250
±500
UNITS
V
mA
µV
GΩ
V
V
dB
dB
dB
pA
nV/√Hz
MAX4460/MAX4461/MAX4462
Guaranteed by Input CMRR test
Guaranteed by REF rejection test
V
CM
= (V
SS
- 0.1V) to (V
DD
- 1.7V)
V
CM
= (V
SS
+ 0.1V) to (V
DD
- 1.7V)
V
DD
= 2.85V to 5.25V
(Note 2)
f = 10kHz
f = 1kHz
V
DD
- V
OH
(Note 3)
_______________________________________________________________________________________
5
