AD7892AN3 Analog Devices, AD7892AN3 Datasheet

AD7892AN3

Manufacturer Part Number

AD7892AN3

Description

DIP24

Manufacturer

Analog Devices

Datasheet

1.AD7892AN1.pdf (14 pages)

Specifications of AD7892AN3

Date_code

05+

Current page: 1 of 14
Download datasheet (145Kb)

GENERAL DESCRIPTION

The AD7892 is a high speed, low power, 12-bit A/D converter

that operates from a single +5 V supply. The part contains a

1.47 µs successive approximation ADC, an on-chip track/hold

amplifier, an internal +2.5 V reference and on-chip versatile

interface structures that allow both serial and parallel connec-

tion to a microprocessor. The part accepts an analog input range

of ± 10 V or ± 5 V (AD7892-1), 0 V to +2.5 V (AD7892-2) and

± 2.5 V (AD7892-3). Overvoltage protection on the analog inputs

for the AD7892-1 and AD7892-3 allows the input voltage to go

to ± 17 V or ± 7 V respectively without damaging the ports.

The AD7892 offers a choice of two data output formats: a

single, parallel, 12-bit word or serial data. Fast bus access times

and standard control inputs ensure easy parallel interface to

microprocessors and digital signal processors. A high speed

serial interface allows direct connection to the serial ports of

microcontrollers and digital signal processors.

In addition to the traditional dc accuracy specifications such as

linearity, full-scale and offset errors, the part is also specified for

dynamic performance parameters including harmonic distortion

and signal-to-noise ratio.

The AD7892 is fabricated in Analog Devices’ Linear Compat-

ible CMOS (LC

that combines precision bipolar circuits with low power CMOS

logic. It is available in a 24-lead, 0.3" wide, plastic or hermetic

DIP or in a 24-lead SOIC.

PRODUCT HIGHLIGHTS

1. The AD7892-3 features a conversion time of 1.47 µs and a

2. The AD7892 operates from a single +5 V supply and con-

3. The part offers a high speed, flexible interface arrangement

IN1

IN2

track/hold acquisition time of 200 ns. This allows a through-

put rate for the part up to 600 kSPS. The AD7892-1 and

AD7892-2 operate with throughput rates of 500 kSPS.

sumes 60 mW typ making it ideal for low power and portable

applications.

with parallel and serial interfaces for easy connection to

microprocessors, microcontrollers and digital signal

processors.

REF OUT/REF IN

SCALING

SIGNAL

CONTROL LOGIC

FUNCTIONAL BLOCK DIAGRAM

MOS) process, a mixed technology process

TRACK/HOLD

EOC

12-Bit 600 kSPS ADC

REFERENCE

CONVST

+2.5V

MOS Single Supply,

AGND

12-BIT

ADC

DGND

AD7892

CLOCK

AD7892

STANDBY

MODE

DB0

DB2

DB3/RFS

DB4/SCLK

DB5/SDATA

DB10/LOW

DB11/LOW

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