AMP771 Low Offset RRO Operational Amplifier
April 2007
AMP771 Low Offset RRO Operational Amplifier
General Description
The AMP771 is Single low noise precision operational amplifiers intended for use in a wide range of applications. The AMP771 can operation in temperature range of –40° to C 125° with low input bias current. AMP771 is characterized to C operate supply voltage range 2.7V to 5V with operating temperature range of −40° to 85° C C. The AMP771is designed for precision, low noise, low voltage, and miniature systems. It provides rail-to-rail output swing into heavy loads. The maximum input offset voltage for the AMP771 is TBD µV at room temperature and the input common mode voltage range includes ground.
Key Specification
Voltage Range VOS(max) VCM(max) Bandwidth Temperature Range 2.7V < VCC < 5.5V TBDµV 0 to VCC – 0.9V 3.5MHz −40° to 85° C C
Features
Low Voltage noise Rail-to-rail output
Applications
Transducer amplifier Instrumentation amplifier Precision current sensing Data acquisition systems Active filters and buffers Sample and hold Portable/Battery Powered electronics
Schematic Diagram
AMP771ST23-5
+IN
1 5 Vcc
Instrumentation Amplifier
V1 + R1 VO1 R2 KR2
+
R1/a +
VOUT
GND
2
-
R1
GND
-
-IN
3
4
VOUT
V2 + VO2 R2 KR2
VOUT = -K(2a+1)(V1-V2)
Figure 1 AMP771 Low Offset RRO Operational Amplifier
Figure 2 Application Example circuit
1
V1.0
AMP771
Pin Assignment
1 5
2
3
4
AMP771ST23-5 (Top View)
Pin No. 1 2 3 4 5
Pin Name +IN GND -IN VOUT VCC
Type I I I O I
Description Positive Differential Input Ground Negative Differential Input Positive Output Power Supply
Operation Conditions
Parameter Power Supply Voltage Operating Temperature Range Symbol VCC TA Min 2.7 -40 Typ Max 5.5 85 Unit V °C
Ordering Information
Part Number AMP771ST23-5 Package 5-lead SOT23-5 Marking
+
A771S XYZ
+ XYZ = assembly and date code
V1.0
2
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