AD9714-EBZ datasheet(35/48 Pages) AD

35 / 48 page

AD9714/AD9715/AD9716/AD9717

Rev. 0 | Page 35 of 48

Address

Bit

Name

Function

IRCML

0x05

IRCMLEN

1: Enables on-chip RCML adjustment

5:0

IRCML[5:0]

Changes the value of the on-chip RCML resistor; this adjusts the common-mode level of

the DAC output stage

000000: RSET = 250 Ω

100000: RSET = 625 Ω

111111: RSET = 1 kΩ

Q DAC Gain

0x06

5:0

Q DACGAIN[5:0]

DAC Q fine gain adjustment; alters the full-scale current as shown in Figure 86

QRSET

0x07

QRSETEN

1: Enables on-chip RCML adjustment

5:0

QRSET[5:0]

Changes the value of the on-chip RSET resistor; this scales the full-scale current of the

DAC in ~0.25 dB steps (nonlinear), see Figure 85

000000: RSET = 8 kΩ

100000: RSET = 16 kΩ

111111: RSET = 32 kΩ

QRCML

0x08

QRCMLEN

1: Enables on-chip RCML adjustment

5:0

QRCML[5:0]

Changes the value of the on-chip RCML resistor; this adjusts the common-mode level of

the DAC output stage

000000, RSET = 250 Ω

100000, RSET = 625 Ω

111111, RSET = 1 kΩ

AUXDAC Q

0x09

7:0

QAUXDAC[7:0]

AUXDAC Q output voltage adjustment word LSBs

0x3FF: Sets AUXDAC Q output to full scale

0x200: Sets AUXDAC Q output to midscale

0x000: Sets AUXDAC Q output to bottom of scale

AUX CTLQ

0x0A

QAUXEN

1: enables AUXDAC Q

6:5

QAUXRNG[1:0]

00: Sets AUXDAC Q output voltage range to 2 V

01: Sets AUXDAC Q output voltage range to 1.5 V

10: Sets AUXDAC Q output voltage range to 1.0 V

11: Sets AUXDAC Q output voltage range to 0.5 V

4:2

QAUXOFS[2:0]

000: Sets AUXDAC Q top of range to 1.0 V

001: Sets AUXDAC Q top of range to 1.5 V

010: Sets AUXDAC Q top of range to 2.0 V

011: Sets AUXDAC Q top of range to 2.5 V

100: Sets AUXDAC Q top of range to 2.9 V

1:0

QAUXDAC[9:8]

AUXDAC Q output voltage adjustment word MSBs

AUXDAC I

0x0B

7:0

IAUXDAC[7:0]

AUXDAC I output voltage adjustment word LSBs

0x3FF: Sets AUXDAC I output to full scale

0x200: Sets AUXDAC I output to midscale

0x000: Sets AUXDAC I output to bottom of scale

AUX CTLI

0x0C

IAUXEN

1: enables AUXDAC I

6:5

IAUXRNG[1:0]

00: Sets AUXDAC I output voltage range to 2 V

01: Sets AUXDAC I output voltage range to 1.5 V

10: Sets AUXDAC I output voltage range to 1.0 V

11: Sets AUXDAC I output voltage range to 0.5 V

4:2

IAUXOFS[2:0]

000: Sets AUXDAC I top of range to 1.0 V

001: Sets AUXDAC I top of range to 1.5 V

010: Sets AUXDAC I top of range to 2.0 V

011: Sets AUXDAC I top of range to 2.5 V

100: Sets AUXDAC I top of range to 2.9 V

1:0

IAUXDAC[9:8]

AUXDAC I output voltage adjustment word MSBs

Reference

Resistor

0x0D

5:0

RREF[5:0]

Permits an adjustment of the on-chip reference voltage and output at REFIO (see Figure 84)

000000: Sets the value of RREF to 8 kΩ, VREF = 0.8 V

100000: Sets the value of RREF to 10 kΩ, VREF = 1.0 V

111111: Sets the value of RREF to 12 kΩ, VREF = 1.2 V

AD9714-EBZ Datasheet(PDF) 35 Page - Analog Devices

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