Current Output, Parallel Input, 16-/14-Bit

Multiplying DACs with Four-Quadrant Resistors

Data Sheet

AD5546/AD5556

Rev. D

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FEATURES

16-bit resolution

14-bit resolution

2- or 4-quadrant multiplying DAC

±1 LSB DNL

±1 LSB INL

Operating supply voltage: 2.7 V to 5.5 V

Low noise: 12 nV/√Hz

0.5 μs settling time

Built-in 4-quadrant resistors allow 0 V to –10 V, 0 V to +10 V,

or ±10 V outputs

Automotive operating temperature: –40°C to +125°C

Compact TSSOP-28 package

APPLICATIONS

Automatic test equipment

Instrumentation

Digitally controlled calibration

Digital waveform generation

FUNCTIONAL BLOCK DIAGRAM

DAC

AD5546/

AD5556

WR

LDAC

MSB

RS

DB0 TO DB15

CONTROL

LOGIC

DAC

REGISTER

POR

16/14

R1

R2

R1

GND

Figure 1. AD5546/AD5556 Simplified Block Diagram

GENERAL DESCRIPTION

The AD5546/AD5556 are precision 16-/14-bit, multiplying, low

power, current output, parallel input digital-to-analog converters

(DACs). They operate from a single 2.7 V to 5.5 V supply with

±10 V multiplying references for four-quadrant outputs. Built-

in four-quadrant resistors facilitate the resistance matching and

temperature tracking that minimize the number of components

needed for multiquadrant applications. The feedback resistor

AD5546/AD5556 are packaged in compact TSSOP-28 packages

with operating temperatures from –40°C to +125°C.

The EVAL-AD5546SDZ is available for evaluating DAC perfor-

mance. For more information, see the UG-309 evaluation board

user guide.

VOUT

C6

GND

U1

AD5546/AD5556

R2

R1

R1A

16-/14-BIT

DATA

16-/14-BIT

DATA

VREFA

U2B

OP2177

–

+

C4

1µF

C5

0.1µF

C8

1µF

C9

0.1µF

+15V

–15V

WR

WR

LDAC

LDAC

RS

RS

MSB

MSB

C2

0.1µF

C1

1µF

V+

V–

U2A

OP2177

+

–

C7

+5V

+10V

–10V

Figure 2. 16-/14-Bit, Four-Quadrant Multiplying DAC with a Minimum of External Components