5962-8876404XX Analog Devices, 5962-8876404XX Datasheet

5962-8876404XX

Manufacturer Part Number

5962-8876404XX

Description

Manufacturer

Analog Devices

Datasheet

1.AD7828LP-REEL.pdf (16 pages)

Specifications of 5962-8876404XX

Case

CDIP

Date_code

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GENERAL DESCRIPTION

The AD7824 and AD7828 are high speed, multichannel, 8-bit

ADCs with a choice of four (AD7824) or eight (AD7828) multi-

plexed analog inputs. A half-flash conversion technique gives a fast

conversion rate of 2.5 µs per channel, and the parts have a built-in

track-and-hold function capable of digitizing full-scale signals of

10 kHz (157 mV/µs slew rate) on all channels. The AD7824 and

AD7828 operate from a single 5 V supply and have an analog input

range of 0 V to 5 V, using an external 5 V reference.

Microprocessor interfacing of the parts is simple, using standard

Chip Select (CS) and Read (RD) signals to initiate the conversion

and read the data from the three-state data outputs. The half-flash

conversion technique means that there is no need to generate a

clock signal for the ADC. The AD7824 and AD7828 can be

interfaced easily to most popular microprocessors.

The AD7824 and AD7828 are fabricated in an advanced, all

ion-implanted, linear compatible CMOS process (LC

have low power dissipation of 40 mW (typ). The AD7824 is

available in a 0.3" wide, 24-lead “skinny” DIP, while the AD7828

is available in a 0.6" wide, 28-lead DIP and in 28-terminal surface-

mount packages.

REV. F

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 that

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

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective companies.

FEATURES

4 or 8 Analog Input Channels

Built-In Track-and-Hold Function

10 kHz Signal Handling on Each Channel

Fast Microprocessor Interface

Single 5 V Supply

Low Power: 50 mW

Fast Conversion Rate: 2.5 s/Channel

Tight Error Specification: 1/2 LSB

MOS) and

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

Tel: 781/329-4700

Fax: 781/326-8703

PRODUCT HIGHLIGHTS

1. 4- or 8-channel input multiplexer gives cost effective,

2. Fast conversion rate of 2.5 µs/channel features a per-channel

3. Built-in track-and-hold function allows handling of four or

4. Tight total unadjusted error spec and channel-to-channel

5. Single 5 V supply simplifies system power requirements.

6. Fast, easy-to-use digital interface allows connection to most

REF

space-saving multichannel ADC system.

sampling frequency of 100 kHz for the AD7824 or 50 kHz

for the AD7828.

eight channels up to 10 kHz bandwidth (157 mV/µs slew rate).

matching eliminate the need for user trims.

popular microprocessors with minimal external components.

No clock signal is required for the ADC.

AIN4

AIN1

AIN8

(+)

(–)

4- and 8-Channel 8-Bit ADCs

A0 A1 A2**

ADDRESS

**AD7828 – 8-CHANNEL MUX

DECODE

LATCH

*AD7824 – 4-CHANNEL MUX

MUX*

A2 – AD7828 ONLY

FUNCTIONAL BLOCK DIAGRAM

AD7824/AD7828

REF

MOS High Speed

(+)

FLASH

(4MSB)

FLASH

(4LSB)

4-BIT

ADC

DAC

RDY

TIMING AND CONTROL

CIRCUITRY

www.analog.com

DRIVERS

THREE-

STATE

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

INT

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