ADC-228AMM datasheet(1/4 Pages) MURATA-PS

Teilenummer	ADC-228AMM

Bauteilbeschribung	8-Bit, 20MHz, Complete Flash A/D Converter

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Hersteller	MURATA-PS [Murata Power Solutions Inc.]

Direct Link	http://www.murata-ps.com

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Figure 1. Functional Block Diagram

13 NO CONNECTION

20 NO CONNECTION

14 BIT 1 (MSB)

15 BIT 2

16 BIT 3

17 BIT 4

21 BIT 5

22 BIT 6

23 BIT 7

24 BIT 8 (LSB)

3 +5V REF. OUT

TRI-STATE

BUFFER

8-BIT

20MHz

FLASH

CONVERTER

LINEARIZATION

& TEMPERATURE

COMPENSATION

NETWORK

INPUT

BUFFER

CS1 11

CS2 12

NO CONNECTION 8

NO CONNECTION 9

CLOCK 18

ANALOG INPUT 5

+15V SUPPLY 19

GROUND 4

GROUND 7

GROUND 6

–15V SUPPLY 10

+5V SUPPLY 1

VOLTAGE

REFERENCE

NETWORK

GROUND 2

FEATURES

■ 8-Bit ﬂash A/D converter

■ 20MHz sampling rate

■ Complete support circuitry

■ Low power, 900mW

■ Sample-hold not required

■ Three-state outputs

■ MIL-STD-883 versions

PRODUCT OVERVIEW

The ADC-228A combines analog front-end

circuitry and a ﬂash A/D converter to digitize

high-speed analog signals at a rate of 20 million

samples per second. The ADC-228A contains an

8-bit, 20MHz, ﬂash A/D, a wideband analog input

buffer, a precision voltage reference, temperature

compensation circuitry, reference trims, and a

three-state output buffer in a 24-pin package.

The ADC-228A offers signiﬁcant savings by

combining all of the circuitry in a single package.

Valuable board real estate is saved, and design

time and manufacturing costs are reduced.

The ADC-228A is housed in a 24-pin ceramic

DDIP package and is available in the commercial,

0 to +70°C, or military, –55 to +125°C, tem-

perature ranges. A MIL-STD-883 version is also

available. Operation is from ±15V and +5V power

supplies.

INPUT/OUTPUT CONNECTIONS

FUNCTION

1

+5V SUPPLY

24

BIT 8 (LSB)

2

GROUND

23

BIT 7

3

+5V REFERENCE OUT

22

BIT 6

4

GROUND

21

BIT 5

5

ANALOG INPUT

20

NO CONNECTION

6

GROUND

19

+15V SUPPLY

7

GROUND

18

CLOCK INPUT

8

NO CONNECTION

17

BIT 4

9

NO CONNECTION

16

BIT 3

10

–15V SUPPLY

15

BIT 2

11

CS1

14

BIT 1 (MSB)

12

CS2

13

NO CONNECTION

ADC-228A

8-Bit, 20MHz, Complete Flash A/D Converter

MDA_ADC-228A.B01 Page 1 of 4

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com

Technical enquiries email: data.acquisition@murata-ps.com, tel: +1 508 339 3000

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