Texas Instruments AMC7834, User Manual, Page: 11 / 32

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AMC7834EVM Hardware Overview
11 SLAU608B – December 2014 – Revised May 2016
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AMC7834 Evaluation Module
Table 8. Optional 2.5-V Reference Generated From Wall Adapter
Configuration Jumper Position Function Description
On board 2.5-V reference JP6 installed Connect to 2.5-V onboard
reference (Verify the ADC internal buffer is
off.) 2.5 V is supplied to both
CMP and REF_IN pins.
JP10 set to 1-2 Connect to 2.5-V onboard
reference
4.7 DAC Signal Pins
The eight 12-bit DACs of the AMC7834 device are accessible through the J5 connector, as shown in
Table 9 . The DACs are separated into four bipolar DACs, and four unipolar DACs. The bipolar can be
programmed for any of the following ranges: –4- to +1-V, –5- to 0-V, and 0- to 5-V range. The unipolar
DACs range can be set from the following two ranges: 0 to 5 V, and 2.5 to 7.5 V.
Table 9. AMC7834EVM DAC Signal Connections
Name Connector Description
DAC1 J5–7 DAC1 bipolar DAC output
DAC2 J5–5 DAC2 bipolar DAC output
DAC3 J5–3 DAC3 bipolar DAC output
DAC4 J5–1 DAC4 bipolar DAC output
ADAC1 J5–15 ADAC1 unipolar DAC output
ADAC2 J5–13 ADAC2 unipolar DAC output
ADAC3 J5–11 ADAC3 unipolar DAC output
ADAC4 J5–9 ADAC4 unipolar DAC output
4.8 PA ON Signal
The PA ON signal provides the control voltage to drive an external PMOS switch capable of turning on/off
the drain current to a PA transistor. Maximum output voltage is set by PAVDD and limited to +20-V.
Table 10. AMC7834EVM PA ON
Name Connector Description
PA_ON J3-10 PA ON signal
4.9 External Remote Temperature
The AMC7834 device includes two remote temperature sensor diode drivers. These pins can be
connected to the onboard diode-connected transistors, or connected externally through the J1 and J2
terminal blocks. This information is presented in
Table 11 .
Table 11. External Remote Temperature Inputs
Name Connector Description
D1+/D1– J1-1,2 External connection for D1+/D1– pins
D2+/D2– J2-1,2 External connection for D2+/D2– pins