AD9731(RevA) 데이터 시트보기 (PDF) - Analog Devices

부품명

상세내역

제조사

AD9731
(Rev.:RevA)

10-Bit, 170 MSPS D/A Converter

Analog Devices 

AD9731

PIN FUNCTION DESCRIPTION

Pin #

1

2–9

10

11

12, 13

14

15, 18, 28

16

17

19

20

21

22

23

24

25

26

27

Pin Name

D9(MSB)

D8–D1

D0(LSB)

CLOCK

NC

DIGITAL +VS

GND

DIGITAL –VS

RSET

ANALOG RETURN

IOUT

IOUTB

ANALOG –VS

REF IN

CONTROL AMP OUT

REF OUT

CONTROL AMP IN

DIGITAL –VS

Pin Description

Most significant data bit of digital input word.

Eight bits of 10-bit digital input word.

Least significant data bit of digital input word.

TTL-compatible edge-triggered latch enable signal for on-board registers.

No internal connection to this pin.

+5 V supply voltage for digital circuitry.

Converter Ground.

–5.2 V supply voltage for digital circuitry.

Connection for external reference set resistor; nominal 1.96 kΩ. Full-scale output current =

32 (Control Amp in V/RSET).

Analog Return. This point and the reference side of the DAC load resistors should be con-

nected to the same potential (nominally ground).

Analog current output; full-scale current occurs with a digital word input of all “1s.” With

external load resistor, output voltage = IOUT (RLOADʈRINTERNAL). RINTERNAL is nominally

240 Ω.

Complementary analog current output; full-scale current occurs with a digital word input

of all “0s.”

Negative analog supply, nominally –5.2 V.

Normally connected to CONTROL AMP OUT (Pin 24). Direct line to DAC current

source network. Voltage changes (noise) at this point have a direct effect on the full-scale

output current of the DAC. Full-scale current output = 32 (CONTROL AMP IN/RSET)

when using the internal amplifier. DAC load is virtual ground.

Normally connected to REF IN (Pin 23). Output of internal control amplifier which pro-

vides a reference for the current switch network.

Normally connected to CONTROL AMP IN (Pin 26). Internal voltage reference, nomi-

nally –1.25 V.

Normally connected to REF Out (Pin 25) if not connected to external reference.

Negative digital supply, nominally –5.2 V.

PIN CONFIGURATION

D9(MSB) 1

28 GND

D8 2

D7 3

27 DIGITAL –VS

26 CONTROL AMP IN

D6 4

25 REF OUT

D5 5

24 CONTROL AMP OUT

D4 6 AD9731 23 REF IN

D3 7 TOP VIEW 22 ANALOG –VS

D2 8 (Not to Scale) 21 IOUTB

D1 9

20 IOUT

D0(LSB) 10

19 ANALOG RETURN

CLOCK 11

18 GND

NC 12

NC 13

DIGITAL +VS 14

17 RSET

16 DIGITAL –VS

15 GND

NC = NO CONNECT

REV. A

–5–

Share Link: