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19-1445; Rev 1; 6/04
Micropower, Single-Supply, Rail-to-Rail
Precision Differential Amplifiers
General Description
The MAX4198/MAX4199 low-power, rail-to-rail differential
amplifiers are ideal for single-supply applications that
benefit from a low 0.01% gain error. The MAX4198 is fac-
tory trimmed to a fixed gain of +1V/V, and the MAX4199
is trimmed to a fixed gain of +10V/V. Capable of operat-
ing from a single +2.7V to +7.5V supply or from dual
±1.35V to ±3.75V supplies, they consume only 42µA
while achieving -3dB bandwidths of 175kHz (MAX4198)
and 45kHz (MAX4199). These amplifiers feature a shut-
down mode that reduces the supply current to 6.5µA.
The MAX4198/MAX4199 can drive 5kΩ loads to within
100mV from each rail. The standard differential amplifi-
er configurations provide common-mode rejection of
90dB for the MAX4198 and 110dB for the MAX4199.
The input common-mode voltage range for the
MAX4198 extends 100mV Beyond-the-Rails™.
The MAX4198/MAX4199 are offered in a space-saving
8-pin µMAX package. For complete micropower, rail-to-
rail instrumentation amplifiers, see the MAX4194–
MAX4197 data sheet.
♦
Low 0.01% Gain Error
♦
High Common-Mode Rejection: 110dB (MAX4199)
♦
10µV Input Offset Voltage (MAX4199)
30µV Input Offset Voltage (MAX4198)
♦
+2.7V to +7.5V Single-Supply Operation
♦
42µA Supply Current
♦
175kHz (MAX4198) and 45kHz (MAX4199)
-3dB Bandwidth
♦
6.5µA Shutdown Current
♦
Rail-to-Rail Outputs Drive 5kΩ Loads
♦
Input Voltage Range Extends 100mV Beyond-the-
Rails (MAX4198)
♦
Available in Space-Saving 8-Pin µMAX Package
Features
MAX4198/MAX4199
Applications
Instrumentation Amplifier Building Block
Differential Voltage Amplifiers
Data-Acquisition Systems
Portable/Battery-Powered Equipment
Transducer Interface
Current-Sense Amplifiers
PART
MAX4198EUA
MAX4198ESA
MAX4199EUA
MAX4199ESA
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 µMAX
8 SO
8 µMAX
8 SO
GAIN
(V/V)
1
1
10
10
Pin Configuration
Functional Diagram
TOP VIEW
7 V
CC
IN- 2
25kΩ
25kΩ (250kΩ)
6 OUT
25kΩ
25kΩ (250kΩ)
1
IN-
2
IN+
REF
3
7
5 FB
REF
1
8
SHDN
V
CC
OUT
FB
MAX4198
MAX4199
IN+
3
MAX4198
MAX4199
6
5
V
EE
4
4 V
EE
( ) ARE FOR MAX4199 ONLY.
µMAX/SO
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
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.
Micropower, Single-Supply, Rail-to-Rail
Precision Differential Amplifiers
MAX4198/MAX4199
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to V
EE
)..................................................+8V
All Other Pins to GND ......................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Output Short-Circuit Duration (to V
CC
or V
EE
)............Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 9.09mW/°C above +70°C).................471mW
8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............330mW
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—MAX4198 (+5V Supply)
(V
CC
= +5V, V
EE
= 0V, R
L
= 25kΩ tied to V
CC
/ 2, V
REF
= V
CC
/ 2, V
SHDN
= V
CC
- 1.5V, typical values are at T
A
= +25°C,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage Range
(Note 2)
SYMBOL
V
CC
Single supply
Dual supply
T
A
= +25°C,
V
CM
= V
CC
/ 2
T
A
= T
MIN
to T
MAX
,
V
CM
= V
CC
/ 2
MAX4198ESA
MAX4198EUA
IN+ differential-mode
IN- differential-mode
Common-mode
Input Voltage Range
DC Common-Mode Rejection
AC Common-Mode Rejection
Power-Supply Rejection
V
IN
CMR
DC
CMR
AC
PSR
Guaranteed by CMR test
V
CM
= V
EE
- 0.1V
to V
CC
+ 0.1V
MAX4198ESA
MAX4198EUA
V
EE
- 0.1
74
70
90
90
90
90
115
MAX4198ESA
MAX4198EUA
MAX4198ESA
MAX4198EUA
CONDITIONS
MIN
2.7
±1.35
±30
±100
TYP
MAX
7.5
±3.75
±500
±1000
±750
±2300
±5
±20
UNITS
V
Input Offset Voltage
V
OS
µV
Input Offset Voltage Drift
TCO
±0.5
±1
50
25
50
µV/°C
Input Resistance
R
IN
kΩ
V
CC
+ 0.1
V
dB
dB
dB
Input Noise Voltage
V
CM
= V
EE
- 0.1 to V
CC
+ 0.1V,
f = 60Hz, f = 120Hz
+2.7V
≤
V
CC
≤
+7.5V, V
CM
= +1.5V,
V
REF
= +1.5V, R
L
= 25kΩ to +1.5V
f = 10Hz
f = 100Hz
f = 10kHz
f = 0.1Hz to 10Hz
R
L
= 25kΩ, ±10mV input overdrive
Output Voltage Swing
R
L
= 5kΩ, ±10mV input overdrive
Short-Circuit Current
Sink/source
V
CM
= V
CC
/ 2,
T
A
= +25°C
V
EE
+ 0.1V
≤
V
OUT
≤
V
CC
-
0.1V
R
L
= 25kΩ, V
EE
+ 0.1V
≤
V
OUT
≤
V
CC
- 0.1V
R
L
= 5kΩ, V
EE
+ 0.2V
≤
V
OUT
≤
V
CC
- 0.2V
MAX4198ESA
MAX4198EUA
120
60
58
7.8
V
EE
+ 0.1 V
EE
+ 0.03 to
to V
CC
- 0.1 V
CC
- 0.03
V
EE
+ 0.2 V
EE
+ 0.1 to
to V
CC
- 0.2 V
CC
- 0.1
±5.5
±0.01
±0.01
±0.2
±0.65
±0.0003
±0.1
nV√Hz
µV
RMS
V
mA
Gain Error
%
±0.1
±3
ppm/°C
±6
%
Gain Temperature Coefficient
Nonlinearity
2
V
EE
+ 0.1V
≤
V
OUT
≤
V
CC
- 0.1V
_______________________________________________________________________________________
Micropower, Single-Supply, Rail-to-Rail
Precision Differential Amplifiers
ELECTRICAL CHARACTERISTICS—MAX4198 (+5V Supply) (continued)
(V
CC
= +5V, V
EE
= 0V, R
L
= 25kΩ tied to V
CC
/ 2, V
REF
= V
CC
/ 2, V
SHDN
= V
CC
- 1.5V, typical values are at T
A
= +25°C,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
Capacitive-Load Stability
-3dB Bandwidth
Slew Rate
Settling Time to 0.1%
Total Harmonic Distortion
Supply Current
Shutdown Supply Current
Input Logic Voltage High (Note 3)
Input Logic Voltage Low (Note 3)
SHDN
Input Bias Current
Enable/Disable Settling Time
Power-Up Delay
t
ON/OFF
SYMBOL
C
L
BW
-3dB
SR
t
s
THD
I
CC
I
SHDN
V
IH
V
IL
V
SHDN
= V
CC
- 1.5V or V
SHDN
= V
EE
V
SHDN
= V
CC
- 2.5V to V
CC
- 1.5V,
V
OUT
= 3.5V, settled to within 0.1%
V
OUT
= 3.5V, settled to within 0.1%
-0.1
28
800
V
OUT
≤
0.1V
P-P
, V
CM
= V
CC
/ 2
V
OUT
= 2V
P-P
step
V
OUT
= 2V
P-P
step
V
OUT
= 2V
P-P
, f = 1kHz
V
CM
= V
CC
/ 2, V
IN+
= V
IN-
V
SHDN
= V
IL
V
CC
- 1.5
V
CC
- 2.5
0.1
CONDITIONS
MIN
TYP
690
175
0.07
34
0.001
45
6.5
55
12
MAX
UNITS
pF
kHz
V/µs
µs
%
µA
µA
V
V
µA
µs
µs
MAX4198/MAX4199
ELECTRICAL CHARACTERISTICS—MAX4198 (+3V Supply)
(V
CC
= +3V, V
EE
= 0V, R
L
= 25kΩ tied to V
CC
/ 2, V
REF
= V
CC
/ 2, V
SHDN
= V
CC
- 1.5V, typical values are at T
A
= +25°C, T
A
= T
MIN
to T
MAX,
unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
T
A
= +25°C,
V
CM
= V
CC
/ 2
T
A
= T
MIN
to T
MAX
,
V
CM
= V
CC
/ 2
MAX4198ESA
MAX4198EUA
MAX4198ESA
MAX4198EUA
MIN
TYP
±35
±100
MAX
±600
±1100
±850
±2400
±5.0
±20
V
CC
+ 0.1
UNITS
Input Offset Voltage
V
OS
µV
Input Offset Voltage Drift
Input Voltage Range
DC Common-Mode Rejection
TCO
V
IN
CMR
DC
MAX4198ESA
MAX4198EUA
Guaranteed by CMR test
MAX4198ESA
V
CM
= V
EE
- 0.1
to V
CC
+ 0.1
MAX4198EUA
R
L
= 25kΩ, ±10mV input overdrive
±0.5
±1.0
µV/°C
V
dB
Output Voltage Swing
R
L
= 5kΩ, ±10mV input overdrive
Short-Circuit Current
Gain Error
Sink/source
R
L
= 25kΩ, V
EE
+ 0.1V
≤
V
CM
= V
CC
/ 2, V
OUT
≤
V
CC
- 0.1V
T
A
= +25°C
R
L
= 5kΩ, V
EE
+ 0.2V
≤
V
OUT
≤
V
CC
- 0.2V
V
EE
+ 0.1V
≤
V
OUT
≤
V
CC
-
0.1V
I
CC
I
SHDN
V
IH
V
IL
MAX4198ESA
MAX4198EUA
V
EE
- 0.1
74
90
70
90
V
EE
+ 0.1 V
EE
+ 0.03 to
to V
CC
- 0.1 V
CC
- 0.03
V
EE
+ 0.2 V
EE
+ 0.1 to
to V
CC
- 0.2 V
CC
- 0.1
±4.5
±0.01
±0.01
±0.2
±0.65
42
6.5
V
CC
- 1.5
V
mA
%
±0.1
±0.1
±3
ppm/°C
±6
µA
µA
V
V
CC
- 2.5
V
3
Gain Temperature Coefficient
Supply Current
Shutdown Supply Current
Input Logic High Voltage (Note 3)
Input Logic Low Voltage (Note 3)
V
CM
= V
CC
/ 2, V
DIFF
= 0V
_______________________________________________________________________________________
Micropower, Single-Supply, Rail-to-Rail
Precision Differential Amplifiers
MAX4198/MAX4199
ELECTRICAL CHARACTERISTICS—MAX4199 (+5V Supply)
(V
CC
= +5V, V
EE
= 0V, R
L
= 25kΩ tied to V
CC
/ 2, V
REF
= V
CC
/ 2, V
S HDN
= V
CC
- 1.5V, typical values are at T
A
= +25°C,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage Range (Note 2)
SYMBOL
V
CC
Single supply
Dual supply
T
A
= +25°C,
V
CM
= V
CC
/ 2
T
A
= T
MIN
to T
MAX
,
V
CM
= V
CC
/ 2
MAX4199ESA
MAX4199EUA
IN+ differential mode
IN- differential mode
Common-mode
Input Voltage Range (Note 2)
DC Common-Mode Rejection
AC Common-Mode Rejection
Power-Supply Rejection
V
IN
CMR
DC
CMR
AC
PSR
Guaranteed by CMR test
V
CM
= V
EE
- 0.1V
to V
CC
- 1.0V
MAX4199ESA
MAX4199EUA
V
EE
- 0.1
76
76
110
110
110
90
120
CONDITIONS
MAX4199EUA
MAX4199ESA
MAX4199EUA
MAX4199ESA
MAX4199EUA
MIN
2.7
±1.35
±10
±100
TYP
MAX
7.5
±3.75
±300
±600
±500
±1475
±3
±15
UNITS
V
Input Offset Voltage
V
OS
µV
Input Offset Voltage Drift
TCO
±0.25
±0.75
275
25
275
µV/°C
Input Resistance
R
IN
kΩ
V
CC
- 1.0
V
dB
dB
dB
V
CM
= V
EE
- 0.1V to V
CC
- 1.0V, f = 60Hz
+2.7V
≤
V
CC
≤
+7.5V, V
CM
= +1.5V,
V
REF
= +1.5V, R
L
= 25kΩ to +1.5V
f = 10Hz
f = 100Hz
f = 10kHz
f = 0.1Hz to 10Hz
R
L
= 25kΩ, ±10mV input overdrive
Input Noise Voltage
Output Voltage Swing
R
L
= 5kΩ, ±10mV input overdrive
Short-Circuit Current
Sink/source
R
L
= 25kΩ, V
EE
+ 0.1V
≤
V
CM
= V
CC
/ 2, V
OUT
≤
V
CC
- 0.1V
T
A
= +25°C
R
L
= 5kΩ, V
EE
+ 0.2V
≤
V
OUT
≤
V
CC
- 0.2V
V
EE
+ 0.1V
≤
V
OUT
≤
V
CC
-
0.1V
C
L
BW
-3dB
SR
t
s
THD
I
CC
I
SHDN
V
OUT
≤
0.1V
P-P
, V
CM
= V
CC
/ 2
V
OUT
= 2V
P-P
V
OUT
= 2V
P-P
step
V
OUT
= 2V
P-P
, f = 1kHz
V
CM
= V
CC
/ 2, V
IN+
= V
IN-
V
SHDN
= V
IL
MAX4199ESA
MAX4199EUA
60
40
38
6.6
V
EE
+ 0.1 V
EE
+ 0.02 to
to V
CC
- 0.1 V
CC
- 0.02
V
EE
+ 0.2 V
EE
+ 0.1 to
to V
CC
- 0.2 V
CC
- 0.1
±5.5
±0.01
±0.01
±1
±2
±0.0003
600
45
0.1
37
0.001
45
6.5
55
12
±0.3
nV√Hz
µV
RMS
V
mA
Gain Error
%
±0.3
±5
ppm/°C
±10
%
pF
kHz
V/µs
µs
%
µA
µA
Gain Temperature Coefficient
Nonlinearity
Capacitive-Load Stability
-3dB Bandwidth
Slew Rate
Settling Time to 0.1%
Total Harmonic Distortion
Supply Current
Shutdown Supply Current
V
EE
+ 0.1V
≤
V
OUT
≤
V
CC
- 0.1V
4
_______________________________________________________________________________________
模拟与混合信号
