ADC0820CIWM National Semiconductor, ADC0820CIWM Datasheet

ADC0820CIWM

Manufacturer Part Number

ADC0820CIWM

Description

SOP20

Manufacturer

National Semiconductor

Datasheets

1.ADC0820CIWM.pdf (22 pages)

2.ADC0820CIWM.pdf (22 pages)

Specifications of ADC0820CIWM

Date_code

09+

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADC0820CIWMX/NOPB

Manufacturer:

Quantity:

9 745

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ADC0820

8-Bit High Speed µP Compatible A/D Converter with

Track/Hold Function

General Description

By using a half-flash conversion technique, the 8-bit

ADC0820 CMOS A/D offers a 1.5 µs conversion time and

dissipates only 75 mW of power. The half-flash technique

consists of 32 comparators, a most significant 4-bit ADC and

a least significant 4-bit ADC.

The input to the ADC0820 is tracked and held by the input

sampling circuitry eliminating the need for an external

sample-and-hold for signals moving at less than 100 mV/µs.

For ease of interface to microprocessors, the ADC0820 has

been designed to appear as a memory location or I/O port

without the need for external interfacing logic.

Key Specifications

n Resolution

n Conversion Time

n Low Power

n Total Unadjusted

Connection and Functional Diagrams

TRI-STATE

Error

is a registered trademark of National Semiconductor Corporation.

Dual-In-Line, Small Outline

and SSOP Packages

Top View

1.5 µs Max (WR-RD Mode)

2.5 µs Max (RD Mode)

DS005501-1

⁄

DS005501

LSB and

75 mW Max

1 LSB

8 Bits

Features

n Built-in track-and-hold function

n No missing codes

n No external clocking

n Single supply — 5 V

n Easy interface to all microprocessors, or operates

n Latched TRI-STATE

n Logic inputs and outputs meet both MOS and T

n Operates ratiometrically or with any reference value

n 0V to 5V analog input voltage range with single 5V

n No zero or full-scale adjust required

n Overflow output available for cascading

n 0.3" standard width 20-pin DIP

n 20-pin molded chip carrier package

n 20-pin small outline package

n 20-pin shrink small outline package (SSOP)

stand-alone

voltage level specifications

equal to or less than V

supply

Molded Chip Carrier

Package

output

DS005501-33

www.national.com

June 1999

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