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| OPA379AIDBVR Datasheet, PDF (12/29 Pages) Texas Instruments – 1.8V, 2.9mA, 90kHz, Rail-to-Rail I/O PERATIONAL AMPLIFIERS | |||
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OPA379
OPA2379
OPA4379
SBOS347D â NOVEMBER 2005 â REVISED MAY 2008 ................................................................................................................................................... www.ti.com
ADDITIONAL APPLICATION EXAMPLES
Figure 25 through Figure 29 illustrate additional application examples.
R3
R2
+2.7V
OPA379
VIN
R1
66.5W
C1
1.5nF
+2.7V
VCC
MSP430x20x3PW
A0+
16-Bit
ADC
REF3312
C2
1mF
VREF
VSS
Figure 25. Unipolar Signal Chain Configuration
VEX
RR
RR
R1
VS
OPA379
VOUT
R1
VREF
Figure 26. Single Op Amp Bridge Amplifier
Load
V
ILOAD
RSHUNT
1W
R1
4.99kW
R3
4.99kW
+5V
R2
49.9kW
OPA379
R4
48.7kW
3V
REF3130
R6
71.5kW
RN
56W
ADS1100
RN
I2C
56W
Stray Ground-Loop Resistance
R7
1.18kW
(PGA Gain = 4)
FS = 3.0V
NOTE: 1% resistors provide adequate common-mode rejection at small ground-loop errors.
Figure 27. Low-Side Current Monitor
12
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Copyright © 2005â2008, Texas Instruments Incorporated
Product Folder Link(s): OPA379 OPA2379 OPA4379
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