5962-9152101MXA Analog Devices, 5962-9152101MXA Datasheet

5962-9152101MXA

Manufacturer Part Number

5962-9152101MXA

Description

Manufacturer

Analog Devices

Datasheet

1.5962-9152101MXA.pdf (16 pages)

Specifications of 5962-9152101MXA

Case

CDIP

Date_code

0610

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GENERAL DESCRIPTION

The AD7874 is a four-channel simultaneous sampling, 12-bit

data acquisition system. The part contains a high speed 12-bit

ADC, on-chip reference, on-chip clock and four track/hold am-

plifiers. This latter feature allows the four input channels to be

sampled simultaneously, thus preserving the relative phase

information of the four input channels, which is not possible if

all four channels share a single track/hold amplifier. This makes

the AD7874 ideal for applications such as phased-array sonar

and ac motor controllers where the relative phase information is

important.

The aperture delay of the four track/hold amplifiers is small and

specified with minimum and maximum limits. This allows sev-

eral AD7874s to sample multiple input channels simultaneously

without incurring phase errors between signals connected to

several devices. A reference output/reference input facility also

allows several AD7874s to be driven from the same reference

source.

In addition to the traditional dc accuracy specifications such as

linearity, full-scale and offset errors, the AD7874 is also fully

specified for dynamic performance parameters including distor-

tion and signal-to-noise ratio.

The AD7874 is fabricated in Analog Devices’ Linear Compat-

ible CMOS (LC

that combines precision bipolar circuits with low-power CMOS

logic. The part is available in a 28-pin, 0.6" wide, plastic or her-

metic dual-in-line package (DIP), in a 28-terminal leadless ce-

ramic chip carrier (LCCC) and in a 28-pin SOIC.

REV. C

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.

FEATURES

Four On-Chip Track/Hold Amplifiers

Simultaneous Sampling of 4 Channels

Fast 12-Bit ADC with 8 s Conversion Time/Channel

29 kHz Sample Rate for All Four Channels

On-Chip Reference

APPLICATIONS

Sonar

Motor Controllers

Adaptive Filters

Digital Signal Processing

10 V Input Range

5 V Supplies

MOS) process, a mixed technology process

MOS 4-Channel, 12-Bit Simultaneous

Sampling Data Acquisition System

PRODUCT HIGHLIGHTS

1. Simultaneous Sampling of Four Input Channels.

2. Tight Aperture Delay Matching.

3. Fast Microprocessor Interface.

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

Tel: 617/329-4700

IN1

IN2

IN3

IN4

Four input channels, each with its own track/hold amplifier,

allow simultaneous sampling of input signals. Track/hold ac-

quisition time is 2 s, and the conversion time per channel is

8 s, allowing 29 kHz sample rate for all four channels.

The aperture delay for each channel is small and the aperture

delay matching between the four channels is less than 4 ns.

Additionally, the aperture delay specification has upper and

lower limits allowing multiple AD7874s to sample more than

four channels.

The high speed digital interface of the AD7874 allows direct

connection to all modern 16-bit microprocessors and digital

signal processors.

AGND

TRACK/

HOLD 4

HOLD 1

HOLD 2

HOLD 3

FUNCTIONAL BLOCK DIAGRAM

DGND

AD7874

MUX

INT

CONTROL LOGIC

COMP

REFERENCE

12-BIT

CONVST

DAC

SAR

AD7874

INTERNAL

REGISTERS

REFERENCE

CLOCK

BUFFER

Fax: 617/326-8703

DATA

DB0

DB11

REF IN

REF OUT

CLK

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