AD7248ATQ View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD7248ATQ

LC2MOS 12-Bit DACPORTs

Analog Devices 

AD7245A/AD7248A

AD7248A PIN FUNCTION DESCRIPTION

(ANY PACKAGE)

Pin Mnemonic Description

l VSS

Negative Supply Voltage (0 V for single

supply operation).

2 ROFS

Bipolar Offset Resistor. This provides

access to the on-chip application resistors

and allows different output voltage ranges.

3 REF OUT Reference Output. The on-chip reference

is provided at this pin and is used when

configuring the part for bipolar outputs.

4 AGND

Analog Ground.

5 DB7

Data Bit 7.

6 DB6

Data Bit 6.

7 DB5

Data Bit 5.

8 DB4

Data Bit 4.

9 DB3

Data Bit 3.

10 DGND

Digital Ground.

11 DB2

Data Bit 2/Data Bit 10.

12 DB1

Data Bit 1/Data Bit 9.

13 DB0

Data Bit 0 (LSB)/Data Bit 8.

Pin Mnemonic Description

14 CSMSB

Chip Select Input for MS Nibble. (Active

LOW). This selects the upper 4 bits of the

input latch. Input data is right justified.

15 CSLSB

Chip Select Input for LS byte. (Active

LOW). This selects the lower 8 bits of the

input latch.

16 WR

Write Input. This is used in conjunction

with CSMSB and CSLSB to load data

into the input latch of the AD7248A.

17 LDAC

Load DAC Input (Active LOW). This is

an asynchronous input which when active

transfers data from the input latch to the

DAC latch.

18 VDD

19 RFB

Positive Supply Voltage.

Feedback Resistor. This allows access to

the amplifier’s feedback loop.

20 VOUT

Output Voltage. Three different output

voltage ranges can be chosen: 0 V to +5 V,

0 V to +10 V or –5 V to +5 V.

DIP and SOIC

AD7248A PIN CONFIGURATIONS

LCCC

PLCC

–6–

REV. A

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