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AD7248AAR

LC2MOS 12-Bit DACPORTs

Analog Devices 

AD7245A/AD7248A

AD7248A PIN FUNCTION DESCRIPTION

(DIP PIN NUMBERS)

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 DB11

Data Bit 11. Most Significant Bit (MSB).

6-11 DB10-DB5 Data Bit 10 to Data Bit 5.

12 DGND

Digital Ground.

13-16 DB4-DB1 Data Bit 4 to Data Bit 1.

17 DB0

Data Bit 0. Least Significant Bit (LSB).

18 CS

Chip Select Input (Active LOW). The de-

vice is selected when this input is active.

Pin Mnemonic Description

19 WR

Write Input (Active LOW). This is used in

conjunction with CS to write data into the

input latch of the AD7245A.

20 LDAC

Load DAC Input (Active LOW). This is

an asynchronous input which when active

transfers data from the input latch to the

DAC latch.

21 CLR

Clear Input (Active LOW). When this in-

put is active the contents of the DAC latch

are reset to all 0s.

22 VDD

23 RFB

Positive Supply Voltage.

Feedback Resistor. This allows access to

the amplifier’s feedback loop.

24 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

AD7245A PIN CONFIGURATIONS

LCCC

PLCC

REV. A

–5–

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