MSP430

V+

V+

V

IN

100W

1nF

OPA363

OPA364

ADS8324

V+ = 1.8V

V+ = 1.8V

OPA363

OPA364

V

IN

100W

1nF

V+

R

1

10kW

R

2

10kW

0.9V

OPAx363

OPAx364

V+

C = 1 F

m

L

OPA363, OPA2363

OPA364, OPA2364, OPA4364

SBOS259C – SEPTEMBER 2002 – REVISED MAY 2013

www.ti.com

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.

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.

Figure 27. The OPA363 and OPA364 Directly Drive the ADS8324

Figure 28. Driving the 12-Bit A/D Converter on the MSP430

12

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Product Folder Links: OPA363 OPA2363 OPA364 OPA2364 OPA4364