MSP430 datasheet(24/88 Pages) TI

Part #	MSP430

Description	AFEx8101 16-Bit and 14-Bit, Low-Power DACs With Voltage Reference and Diagnostic ADC for 4-mA to 20-mA Loop-Powered Applications

PDF	88 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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24 / 88 page

7.3.1.1 DAC Resistor String

Figure 7-1 shows that the resistor string structure consists of a series of resistors, each of value R. The code

loaded to the DAC determines the node on the string at which the voltage is tapped off to be fed into the output

amplifier. The voltage is tapped off by closing one of the switches connecting the string to the amplifier. The

resistor string architecture has inherent monotonicity, voltage output, and low glitch.

To Output

Am plifier

Figure 7-1. DAC Resistor String

7.3.1.2 DAC Buffer Amplifier

The VOUT output pin is driven by the DAC output buffer amplifier. The output amplifier default settings are

designed to drive capacitive loads as high as 100 pF without oscillation. The output buffer is able to source

and sink 1 mA. The device implements short-circuit protection for momentary output shorts to ground and VDD

supply. The source and sink short-circuit current thresholds are set to 5 mA.

AFE78101, AFE88101

SLASF21 – DECEMBER 2022

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Product Folder Links: AFE78101 AFE88101

MSP430 Datasheet(PDF) 24 Page - Texas Instruments