Datasheet

The Output Op Amp
3-5
EVM Operation
Table 3-7.DAC7574/DAC6574/DAC5574 I
2
C Slave Address Map
Factory Set I
2
C Address W7 W8 R/W
I
2
C Address and
Function
1 0 0 1 1 Open Open 0 0x9E (Write)
1 0 0 1 1 Open Close 0 0x9C (Write)
1 0 0 1 1 Close Open 0 0x9A (Write)
1 0 0 1 1 Close Close 0 0x98 (Write)
1 0 0 1 1 Open Open 1 0x9F (Read)
1 0 0 1 1 Open Close 1 0x9D (Read)
1 0 0 1 1 Close Open 1 0x9B (Read)
1 0 0 1 1 Close Close 1 0x99 (Read)
Table 3-8.DAC7571/DAC6571/DAC5571 I
2
C Slave Address Map
Factory Set I
2
C Address Address Resistor R/W
I
2
C Address and
Function
1
0
0
1
1
0
R22 installed
0
0x98 (Write)
1 0 0 1 1 0
R13 installed
0 0x98 (Write)
1
0
0
1
1
0
R22 not installed
0
0 9A (Write)
1 0 0 1 1 0
R13 installed
0 0x9A (Write)
1
0
0
1
1
0
R22 installed
1
0x99 (Read)
1 0 0 1 1 0
R13 installed
1 0x99 (Read)
1
0
0
1
1
0
R22 not installed
1
0x9B (Read)
1 0 0 1 1 0
R13 installed
1 0x9B (Read)
Table 3-9.DAC8571 I
2
C Slave Address Map
Factory Set I
2
C
Address
Address Resistor
See
Note
R/W
I
2
C Address and
Function
1
0
0
1
1
R2 installed
0
0
0 98 (Write)
1 0 0 1 1
R23 installed
0 0 0x98 (Write)
1
0
0
1
1
R2 installed
0
0
0x9C (Write)
1 0 0 1 1
R23 not installed
0 0 0x9C (Write)
1
0
0
1
1
R2 installed
0
1
0x99 (Read)
1 0 0 1 1
R23 installed
0 1 0x99 (Read)
1
0
0
1
1
R2 installed
0
1
0x9D (Read)
1 0 0 1 1
R23 not installed
0 1 0x9D (Read)
Note: Shaded columns represent factory-set I
2
C address bits.
3.4 The Output Op Amp
The EVM includes an optional signal conditioning circuit for the DAC output
through an external operational amplifier, U2. Only one DAC output channel
can be monitored at any given time for evaluation since the odd numbered pins
(J4-1 to J4-7) are tied together. The output op-amp is configured to unity gain
by default. Nevertheless, the raw outputs of the DAC can be probed through
the even pins of J4, the output terminal, which also provides mechanical
stability when stacking or plugging into any interface card. J4 also provides