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| AMC7836 Datasheet, PDF (37/88 Pages) Texas Instruments – AMC7836 High-Density, 12-Bit Analog Monitor and Control Solution With Multichannel ADC, Bipolar DACs, Temperature Sensor, and GPIO Ports | |||
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AMC7836
SLAS986C â NOVEMBER 2014 â REVISED APRIL 2016
7.3.4 Internal Reference
The AMC7836 device includes a high-performance internal reference for the on-chip ADC and 16 DACs (see
Figure 58). The internal reference is a 2.5 V, bipolar transistor-based, precision bandgap reference. A
compensation capacitor (4.7 μF, typical) should be connected between the REF_CMP pin and the AGND2 pin.
The AMC7836 device includes a buffer to drive the ADC and should not be used to drive any external circuitry.
The ADC reference buffer is powered down by default and should be enabled in the ADC configuration register
(address 0x10) during device initialization.
Internal
Reference
(2.5 V)
C > 4.7 µF
(Minimize
inductance to pin)
REF_CMP
AGND2
Local
Temperatu
re Sensor
ADC
12-b
DAC-0
12-b
DAC-1
12-b
DAC-15
12-b
Figure 58. AMC7836 Internal Reference
Copyright © 2014â2016, Texas Instruments Incorporated
Product Folder Links: AMC7836
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