Datasheet

Factory Default Setting
3-2
3.1 Factory Default Setting
The EVM board is set to its default configuration from the factory as described
in Table 3−1 to operate in bipolar ±2.5-V output operation. The following
default jumper settings are shown in Figure 3−1.
Table 3−1.DAC7654 EVM Jumper Default Configuration
Reference
Jumper
Position
Function
W1 2−3 Dual supply operation
W2 1−2 DAC output A (V
OUT
A) is routed to J4−2
W3 1−2 DAC output B (V
OUT
B) is routed to J4−4
W4 1−2 DAC output C (V
OUT
C) is routed to J4−6
W5 1−2 Negative supply rail of U2 operational amplifier is supplied with V
SS
W6 OPEN Dual supply operation
W7 OPEN Dual supply operation
W8 OPEN Dual supply operation
W9 OPEN Dual supply operation
W10 1−2 DAC output D (V
OUT
D) is routed to J4−8
W11 OPEN Use for digitally controlled current source application only.
W12 2−3 Dual supply operation
W13 2−3 Dual supply operation
W14 OPEN Reset pin high
W15 CLOSED U2 operational-amplifier configuration jumper set to 2x gain
W16 OPEN RSTSEL configuration jumper; RSTSEL = 1
W20 2−3 Dual supply operation
W21 OPEN Use for digitally controlled current source application only.
W22 OPEN Use for digitally controlled current source application only.
W23 2−3 IOV
DD
= 5 V
W24 OPEN Use for digitally controlled current source application only.
W25 2−3 Dual supply operation (V
SS
= −5 V)
W26 2−3 GPIO0 drives LDAC signal
W27 1−2 CS signal routed to drive CS_ line of U1
TP9 OPEN Use for digitally controlled current source application only.
TP10 OPEN Use for digitally controlled current source application only.
J4 1−2 DAC output A (V
OUT
A) is routed through LPF onto J5−2 connector
J5 2−3 Selected DAC output connected to output operational amplifier, U2