OPA364IDBVRG4 Datasheet, PDF (12/38 Pages) Texas Instruments – 1.8V, 7MHz, 90dB CMRR, Single-Supply, Rail-to-Rail I/O Operational Amplifier

OPA363, OPA2363
OPA364, OPA2364, OPA4364
SBOS259C – SEPTEMBER 2002 – REVISED MAY 2013
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BUFFERED REFERENCE VOLTAGE
Many single-supply applications require a mid-supply reference voltage. The OPA363 and OPA364 offer
excellent capacitive load drive capability, and can be configured to provide a 0.9V reference voltage, as can be
seen in Figure 26. For appropriate loading considerations, see the CAPACITIVE LOAD section.
V+
V+
R₁
10kW
0.9V
R₂
10kW
OPAx363
OPAx364
C_L = 1mF
Figure 26. The OPA363 and OPA364 Provide a Stable Reference Voltage
DIRECTLY DRIVING THE ADS8324 AND THE MSP430
The OPA363 and OPA364 series op amps are optimized for driving medium speed (up to 100kHz) sampling A/D
converters. However, they also offer excellent performance for higher speed converters. The no crossover input
stage of the OPA363 and OPA364 directly drive A/D converters without degradation of differential linearity and
THD. They provide an effective means of buffering the A/D converters input capacitance and resulting charge
injection while providing signal gain. Figure 27 and Figure 28 show the OPA363 and OPA364 configured to drive
the ADS8324 and the 12-bit A/D converter on the MSP430.
V+ = 1.8V
V+ = 1.8V
OPA363
OPA364
V_IN
100W
ADS8324
1nF
Figure 27. The OPA363 and OPA364 Directly Drive the ADS8324
V+
V+
OPA363
OPA364
V_IN
100W
MSP430
1nF
Figure 28. Driving the 12-Bit A/D Converter on the MSP430
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