AD9704BCPZRL7 datasheet(11/52 Pages) AD

Part #	AD9704BCPZRL7

Description	8-/10-/12-/14-Bit, 175 MSPS TxDAC D/A Converters

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AD9704/AD9705/AD9706/AD9707

Rev. 0 | Page 11 of 52

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

AD9707

TOP VIEW

(Not to Scale)

PIN 1

INDICATOR

8

7

6

5

4

3

2

1

DB1

DB2

DB3

DB4

DB5

DVDD

DB6

DB7

17

18

19

20

21

22

23

24

PIN/SPI/RESET

AVDD

OTCM

IOUTB

IOUTA

ACOM

REFIO

FS ADJ

Figure 3. AD9707 Pin Configuration

Table 9. AD9707 Pin Function Descriptions

Pin No.

Mnemonic

Description

27

DB13 (MSB)

Most Significant Data Bit (MSB).

28 to 32,

1, 2, 4 to 8

DB12 to DB1

Data Bit 12 to Data Bit 1.

9

DB0 (LSB)

Least Significant Data Bit (LSB).

25

SLEEP/CSB

In pin mode, active high powers down chip.

In SPI mode, this pin is the serial port chip select (active low).

23

REFIO

Reference Input/Output. Serves as reference input when internal reference disabled. Serves as 1.0 V reference

output when internal reference activated. Requires a 0.1 μF capacitor to ACOM when internal reference activated.

24

FS ADJ

Full-Scale Current Output Adjust.

22

ACOM

Analog Common.

20

IOUTB

Complementary DAC Current Output. Full-scale current is sourced when all data bits are 0s.

21

IOUTA

DAC Current Output. Full-scale current is sourced when all data bits are 1s.

18

AVDD

Analog Supply Voltage (1.7 V to 3.6 V).

19

OTCM

Adjustable Output Common Mode. Refer to the Theory of Operation section for details.

17

PIN/SPI/RESET

Selects SPI mode or pin mode operation. Active high for pin mode operation. Active low for SPI mode

operation. Pulse high to reset SPI registers to default values.

16

MODE/SDIO

In pin mode, this selects the input data format. Connect to DCOM for straight binary, DVDD for twos complement.

In SPI mode, this pin acts as SPI data input/output.

15

CMODE/SCLK

In pin mode, this pin selects the clock input type. Connect to CLKCOM for single-ended clock receiver

(drive CLK+ and float CLK–). Connect to CLKVDD for differential receiver.

In SPI mode, this pin is the serial data clock input.

14

CLKCOM

Clock Common.

13

CLK−

Differential Clock Input.

12

CLK+

Differential Clock Input.

11

CLKVDD

Clock Supply Voltage (1.7 V to 3.6 V).

10, 26

DCOM

Digital Common.

3

DVDD

Digital Supply Voltage (1.7 V to 3.6 V).

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