Philips Semiconductors Linear Products

Product specification

ADC0820

8-Bit, high-speed,

µP-compatible A/D converter

with track/hold function

568

August 31, 1994

853-1631 13721

DESCRIPTION

By using a half-flash conversion technique, the 8-bit ADC0820

CMOS A/D offers a 1.5

µs conversion time while dissipating a

maximum 75mW of power. The half-flash technique consists of 31

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 slewing at less than 100mV/

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.

FEATURES

DC

specifications

PIN CONFIGURATION

VREF(–)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

20

19

18

17

16

15

VIN

DB0

DB1

DB2

DB3

WR/RDY

MODE

RD

INT

GND

VDD

NC

OFL

DB7

DB6

DB5

DB4

CS

VREF(+)

TOP VIEW

D, F, N Packages

APPLICATIONS

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

ORDER CODE

DWG #

20-Pin Plastic Dual In-Line Package (DIP)

0 to +70

°C

ADC0820CNEN

0408B

20-Pin Plastic Small Outline (SO) package

0 to +70

°C

ADC0820CNED

1021B