Data Sheet

AD5761/AD5721

Rev. C | Page 25 of 31

Table 12. Control Register Functions

Bit Name

Description

CV[1:0]

CLEAR voltage selection.

00: zero scale.

01: midscale.

10, 11: full scale.

OVR

5% overrange.

0: 5% overrange disabled.

1: 5% overrange enabled.

B2C

Bipolar range.

0: DAC input for bipolar output range is straight binary coded.

1: DAC input for bipolar output range is twos complement coded.

ETS

Thermal shutdown alert. The alert may not work correctly if the device powers on with temperature conditions >150°C

(greater than the maximum rating of the device).

0: internal digital supply does not power down if die temperature exceeds 150°C.

1: internal digital supply powers down if die temperature exceeds 150°C.

PV[1:0]

Power-up voltage.

00: zero scale.

01: midscale.

10, 11: full scale.

RA[2:0]

Output range. Before an output range configuration, the device must be reset.

000: −10 V to +10 V.

001: 0 V to +10 V.

010: −5 V to +5 V.

011: 0 V to 5 V.

100: −2.5 V to +7.5 V.

101: −3 V to +3 V.

110: 0 V to 16 V.

111: 0 V to 20 V.

Table 13. Bipolar Output Range Possible Codes

Straight Binary

Decimal Code

Twos Complement

1111

+7

0111

1110

+6

0110

1101

+5

0101

1100

+4

0100

1011

+3

0011

1010

+2

0010

1001

+1

0001

1000

0

0000

0111

−1

1111

0110

−2

1110

0101

−3

1101

0100

−4

1100

0011

−5

1011

0010

−6

1010

0001

−7

1001

0000

−8

1000