Datasheet

www.ti.com
1 3
1 3
1 3
1 3
1 3
1 3
EVM Operation
Table 8. Jumper Setting Function (continued)
Reference Jumper Setting Function
4-mA to 20-mA operation is used with Q1 for current source.
W8
4-mA to 20-mA operation is used with U4A for current source.
4-mA to 20-mA operation is used with U4A for current source.
W9
4-mA to 20-mA operation is used with Q1 for current source.
REF1 or U4A supplies the external reference for V
REF
H of DAC7631.
W10
+REFin supplies the external reference for V
REF
H of DAC7631.
REF1 or U4A supplies the external reference for V
REF
L of DAC7631 via U5.
W11
–REFin supplies the external reference for VREFL of DAC7631.
RST_ is pulled up via R5 resistor.
W14
RST_ is pulled down to DGND and device is held on reset state.
Configures output operational amplifier, U2, to unity gain output.
W15
Configures the output operational amplifier, U2 with an inverting gain of two.
RSTSEL is pulled up via R13 resistor and device resets to midscale on powerup.
W16
RSTSEL is pulled down to DGND and device resets to minimumscale on powerup.
Dual-supply operation (V
SS
= –5VA).
W20
Single-supply operation (V
SS
= AGND).
DAC7631EVMSLAU148 – January 2005 15