Dual 12-Bit, High Bandwidth, Multiplying DAC with

4-Quadrant Resistors and Parallel Interface

Data Sheet

AD5405

Rev. D

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FEATURES

10 MHz multiplying bandwidth

On-chip 4-quadrant resistors allow flexible output ranges

INL of ±1 LSB

40-lead LFCSP package

2.5 V to 5.5 V supply operation

±10 V reference input

21.3 MSPS update rate

Extended temperature range: −40°C to +125°C

4-quadrant multiplication

Power-on reset

0.5 µA typical current consumption

Guaranteed monotonic

Readback function

APPLICATIONS

Portable battery-powered applications

Waveform generators

Analog processing

Instrumentation applications

Programmable amplifiers and attenuators

Digitally controlled calibration

Programmable filters and oscillators

Composite video

Ultrasound

Gain, offset, and voltage trimming

GENERAL DESCRIPTION

The AD54051 is a CMOS, 12-bit, dual-channel, current output

digital-to-analog converter (DAC). This device operates from a

2.5 V to 5.5 V power supply, making it suited to battery-powered

and other applications.

Because of manufacturing with a CMOS submicron process, the

device offers excellent 4-quadrant multiplication characteristics,

with large signal multiplying bandwidths of up to 10 MHz.

provides temperature tracking and full-scale voltage output when

combined with an external I to V precision amplifier. This device

also contains the 4-quadrant resistors necessary for bipolar

operation and other configuration modes.

This DAC uses data readback, allowing the user to read the

contents of the DAC register via the DB pins. On power-up, the

internal register and latches fill with 0s, and the DAC outputs

are at zero scale.

The AD5405 has a 6 mm × 6 mm, 40-lead LFCSP package.

FUNCTIONAL BLOCK DIAGRAM

AD5405

DB0

DB11

DATA

INPUTS

DAC A/B

CS

R/W

GND

CONTROL

LOGIC

INPUT

BUFFER

LATCH

12-BIT

R-2R DAC A

POWER-ON

RESET

12-BIT

R-2R DAC B

LATCH

R1

2R

R1A

R2

2R

R3

2R

R3A

R2A

R2_3A

R2

2R

R3

2R

R3B

R2B

R2_3B

RFB

2R

R1

2R

RFB

2R

R1B

LDAC

CLR

Figure 1.