AD7398BR-REEL7 查看數據表（PDF） - Analog Devices

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AD7398BR-REEL7

Quad, Serial-Input 12-Bit/10-Bit DACs

Analog Devices 

PIN CONFIGURATION

VOUTB 1

16 VOUTC

VOUTA 2

15 VOUTD

VSS 3

AD7398/

AD7399

14 VDD

VREFA 4

13 VREFC

TOP VIEW

VREFB 5 (Not to Scale) 12 VREFD

GND 6

11 SDI

LDAC 7

10 CLK

RS 8

9 CS

AD7398/AD7399

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Mnemonic

VOUTB

VOUTA

VSS

VREFA

VREFB

GND

LDAC

RS

CS

CLK

SDI

VREFD

VREFC

VDD

VOUTD

VOUTC

PIN FUNCTION DESCRIPTIONS

Function

DAC B Voltage Output.

DAC A Voltage Output.

Negative Power Supply Input. Specified range of operation 0 V to –5.5 V.

DAC A Reference Voltage Input Terminal. Establishes DAC A full-scale output voltage. Pin can

be tied to VDD or VSS pin.

DAC B Reference Voltage Input Terminal. Establishes DAC B full-scale output voltage. Pin can

be tied to VDD or VSS pin.

Ground Pin.

Load DAC Register Strobe, Level Sensitive Active Low. Transfers all Input Register data to

DAC registers. Asynchronous active low input. See Control Logic Truth Table for operation.

Resets Input and DAC Registers to All Zero Codes. Shift Register contents unchanged.

Chip Select, Active Low Input. Disables shift register loading when high. Transfers Serial Regis-

ter Data to the Input Register when CS returns High. Does not effect LDAC operation.

Schmitt Triggered Clock Input, Positive Edge Clocks Data into Shift Register.

Serial Data Input. Input data loads directly into the shift register.

DAC D Reference Voltage Input Terminal. Establishes DAC D full-scale output voltage. Pin can

be tied to VDD or VSS pin.

DAC C Reference Voltage Input Terminal. Establishes DAC C full-scale output voltage. Pin can

be tied to VDD or VSS pin.

Positive Power Supply Input. Specified range of operation 3 V to 5 V ± 10%.

DAC D Voltage Output.

DAC C Voltage Output.

REV. 0

–5–

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