Complete Quad, 16-Bit, High Accuracy,

Serial Input, Bipolar Voltage Output DAC

Data Sheet

AD5764

Rev. F

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FEATURES

Complete quad, 16-bit digital-to-analog

converter (DAC)

Programmable output range

±10 V, ±10.2564 V, or ±10.5263 V

±1 LSB maximum INL error, ±1 LSB maximum DNL error

Low noise: 60 nV/√Hz

Settling time: 10 μs maximum

Integrated reference buffers

Output control during power-up/brownout

Programmable short-circuit protection

Simultaneous updating via LDAC

Asynchronous CLR to zero code

Digital offset and gain adjust

Logic output control pins

DSP-/microcontroller-compatible serial interface

Temperature range: −40°C to +85°C

iCMOS process technology1

APPLICATIONS

Industrial automation

Open-loop/closed-loop servo control

Process control

Data acquisition systems

Automatic test equipment

Automotive test and measurement

High accuracy instrumentation

GENERAL DESCRIPTION

The AD5764 is a quad, 16-bit, serial input, bipolar voltage

output DAC that operates from supply voltages of ±11.4 V to

±16.5 V. Nominal full-scale output range is ±10 V. The AD5764

provides integrated output amplifiers, reference buffers, and

proprietary power-up/power-down control circuitry. The part

also features a digital I/O port that is programmed via the serial

interface. The part incorporates digital offset and gain adjust

registers per channel.

The AD5764 is a high performance converter that offers guar-

anteed monotonicity, integral nonlinearity (INL) of ±1 LSB, low

noise, and 10 μs settling time. During power-up (when the

supply voltages are changing), VOUTx is clamped to 0 V via a

low impedance path.

The AD5764 uses a serial interface that operates at clock rates of

up to 30 MHz and is compatible with DSP and microcontroller

interface standards. Double buffering allows the simultaneous

updating of all DACs. The input coding is programmable to

either twos complement or offset binary formats. The asynchro-

nous clear function clears the data register to either bipolar zero or

zero scale depending on the coding used. The AD5764 is ideal

for both closed-loop servo control and open-loop control appli-

cations. The AD5764 is available in a 32-lead TQFP, and offers

guaranteed specifications over the −40°C to +85°C industrial

temperature range. See Figure 1 for the functional block diagram.

Table 1. Related Devices

Part No.

Description

AD5764R

AD5764 with internal voltage reference

AD5744R

Complete quad, 14-bit, high accuracy, serial

input, bipolar voltage output DAC with

internal voltage reference

platform that enables the development of analog ICs capable of 30 V and operating at ±15 V supplies, allowing dramatic reductions in power consumption and package

size, and increased ac and dc performance.