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

Multiplying DACs with 4-Quadrant Resistors

AD5547/AD5557

Rev. 0

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FEATURES

Dual channel

16-bit resolution: AD5547

14-bit resolution: AD5557

2- or 4-quadrant, 4 MHz BW multiplying DAC

±1 LSB DNL

±1 LSB INL for AD5557, ±2 LSB INL for AD5547

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

Extended automotive operating temperature range:

–40°C to +125°C

Selectable zero-scale/midscale power-on presets

Compact TSSOP-38 package

APPLICATIONS

Automatic test equipment

Instrumentation

Digitally controlled calibration

Digital waveform generation

GENERAL DESCRIPTION

The AD5547/AD5557 are dual precision, 16-/14-bit,

multiplying, low power, current-output, parallel input, digital-

to-analog converters. They are designed to operate from single

+5 V supply with ±10 V multiplying references for 4-quadrant

outputs with up to 4 MHz bandwidth.

FUNCTIONAL BLOCK DIAGRAM

DAC A

D0..D15

OR

D0..D13

DAC A

DAC B

ADDR

DECODE

INPUT

REGISTER

RS

DAC A

REGISTER

RS

DAC B

REGISTER

RS

POWER

ON

RESET

AGNDA

AGNDB

D0–D15

(AD5547)

D0–D13

(AD5557)

A0, A1

MSB

LDAC

DGND

WR

RS

INPUT

REGISTER

RS

DAC B

AD5547/AD5557

Figure 1.

The built-in 4-quadrant resistors facilitate resistance matching

and temperature tracking, which minimize the numbers of

components needed for multiquadrant applications. In addition,

external buffer.

The AD5547/AD5557 are available in a compact TSSOP-38

package and operate at the extended automotive temperature

range of –40°C to +125°C.

VREF

–VREF

–VREF TO +VREF

U1

C1

16/14 DATA

R1

R2

C2

RFB

ROFS

16-/14-BIT

DAC A

MSB A0, A1

2

POWER-ON

RESET

AD5547/AD5557

IOUTA

AGNDA

(ONE CHANNEL SHOWN ONLY)

U2

VOUTA

MSB

A0, A1

LDAC

WR

RS

WR

RS

LDAC

Figure 2. 16/14-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Shown)