AD766JNZ Analog Devices Inc, AD766JNZ Datasheet

AD766JNZ

Manufacturer Part Number

AD766JNZ

Description

IC DAC 16BIT W/VREF 16-DIP

Manufacturer

Analog Devices Inc

Series

DACPORT®r

Datasheet

1.AD766JNZ.pdf (8 pages)

Specifications of AD766JNZ

Data Interface

Serial

Settling Time

1.5µs

Number Of Bits

Number Of Converters

Voltage Supply Source

Analog and Digital, Dual ±

Power Dissipation (max)

300mW

Operating Temperature

-40°C ~ 85°C

Mounting Type

Through Hole

Package / Case

16-DIP (0.300", 7.62mm)

Resolution (bits)

16bit

Sampling Rate

390kSPS

Input Channel Type

Serial

Supply Current

-14mA

Digital Ic Case Style

DIP

No. Of Pins

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD766JNZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

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REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

PRODUCT DESCRIPTION

The AD766 16-bit DSP DACPORT provides a direct, three-

wire interface to the serial ports of popular DSP processors, in-

cluding the ADSP-2101, TMS320CXX, and DSP56001. No

additional “glue logic” is required. The AD766 is also com-

plete, offering on-chip serial-to-parallel input format conver-

sion, a 16-bit current-steering DAC, voltage reference, and a

voltage output op amp. The AD766 is fabricated in Analog

Devices’ BiMOS II mixed-signal process which provides bipolar

transistors, MOS transistors, and thin-film resistors for preci-

sion analog circuits in addition to CMOS devices for logic.

The design and layout of the AD766 have been optimized for ac

performance and are responsible for its guaranteed and tested

94 dB signal-to-noise ratio to 20 kHz and 79 dB SNR to

250 kHz. Laser-trimming the AD766’s silicon chromium thin-

film resistors reduces total harmonic distortion below –81 dB

(at 1 kHz), a specification also production tested. An optional

linearity trim pin allows elimination of midscale differential

linearity error for even lower THD with small signals.

The AD766’s output amplifier provides a 3 V signal with a

high slew rate, small glitch, and fast settling. The output ampli-

fier is short circuit protected and can withstand indefinite shorts

to ground.

DACPORT is a registered trademark of Analog Devices, Inc.

FEATURES

Zero-Chip Interface to Digital Signal Processors

Complete DACPORT®

Serial, Twos-Complement Input

Sample Rates to 390 kSPS

94 dB Minimum Signal-to-Noise Ratio

–81 dB Maximum Total Harmonic Distortion

15-Bit Monotonicity

16-Pin Plastic and Ceramic Packages

Available in Commercial, Industrial, and Military

APPLICATIONS

Digital Signal Processing

Noise Cancellation

Radar Jamming

Automatic Test Equipment

Precision Industrial Equipment

Waveform Generation

3 V Output

5 V to

On-Chip Voltage Reference

Voltage and Current Outputs

Temperature Ranges

12 V Operation

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

The serial interface consists of bit clock, data, and latch enable

inputs. The twos-complement data word is clocked MSB first

on falling clock edges into the serial-to-parallel converter, con-

sistent with the serial protocols of popular DSP processors. The

input clock can support data transfers up to 12.5 MHz. The

falling edge of latch enable updates the internal DAC input reg-

ister at the sample rate with the sixteen bits most recently

clocked into the serial input register.

The AD766 operates over a 5 V to 12 V power supply range.

The digital supplies, +V

analog signal supplies, +V

crosstalk. Separate analog and digital ground pins are also pro-

vided. An internal bandgap reference provides a precision volt-

age source to the output amp that is stable over temperature and

time.

Power dissipation is typically 120 mW with 5 V supplies and

300 mW with 12 V. The AD766 is available in commercial

(0 C to +70 C), industrial (–40 C to +85 C), and military

(–55 C to +125 C) grades. Commercial and industrial grade

parts are available in a 16-pin plastic DIP; military parts pro-

cessed to MIL-STD-883B are packaged in a 16-pin ceramic

DIP. See Analog Devices’ Military Products Databook or current

military data sheet for specifications for the military version.

FUNCTIONAL BLOCK DIAGRAM

and –V

, can be separated from the

, for reduced digital

DSP DACPORT

AD766

Fax: 617/326-8703

16-Bit

Related parts for AD766JNZ

AD766JNZ Summary of contents

Page 1

FEATURES Zero-Chip Interface to Digital Signal Processors Complete DACPORT® On-Chip Voltage Reference Voltage and Current Outputs Serial, Twos-Complement Input 3 V Output Sample Rates to 390 kSPS 94 dB Minimum Signal-to-Noise Ratio –81 dB Maximum Total Harmonic Distortion 15-Bit ...

Page 2

AD766–SPECIFICATIONS Parameter RESOLUTION DIGITAL INPUTS 0 SERIAL PORT TIMING Serial Clock Period (t ) CLK Serial Clock Serial ...

Page 3

Parameter TEMPERATURE RANGE Specified Storage NOTES 1 For A grade only, voltage outputs are guaranteed only Specified using external op amp, see Figure 3 for more details. 3 Tested at full-scale input. 4 For A grade only, ...

Page 4

AD766–Definition of Specifications TOTAL HARMONIC DISTORTION Total Harmonic Distortion (THD) is defined as the ratio of the square root of the sum of the squares of the values of the har- monics to the value of the fundamental input frequency. ...

Page 5

For applications requiring broader bandwidths and/or even lower noise than that afforded by the AD766’s internal op amp, an external op amp can easily by used in its place. I drives the negative (inverting) input terminal of the external op ...

Page 6

AD766 system where only a single positive and a single negative supply are available. In this case, the positive logic and positive analog supplies may both be connected to the single positive supply. The negative logic and negative analog supplies ...

Page 7

Figure 10. Typical THD vs. Frequency Figure 11. THD vs. Temperature INTERFACING THE AD766 TO DIGITAL SIGNAL PROCESSORS The AD766 is specifically designed to easily interface to several popular digital signal processors (DSP) without any additional logic. Such an interface ...

Page 8

AD766 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Pin Plastic DIP (N-16) D-16 16-Lead Side Brazed Ceramic DIP –8– REV. A ...

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