ADS-944MM Murata Power Solutions Inc, ADS-944MM Datasheet

ADS-944MM

Manufacturer Part Number

ADS-944MM

Description

Analog To Digital Converter

Manufacturer

Murata Power Solutions Inc

Datasheets

1.ADS-944MC.pdf (8 pages)

2.ADS-944MC.pdf (9 pages)

Current page: 1 of 9
Download datasheet (291Kb)

FEATURES

■

DATEL

BLOCK DIAGRAM

14-bit resolution

5MHz minimum sampling rate

No missing codes over full HI-REL temperature

range

Edge-triggered, no pipeline delay

Low power, 2.95 Watts

Small, 32-pin, ceramic TDIP package

SMT package available

Excellent dynamic performance

MIL-STD-883 screening or DESC SMD available

START CONVERT 32

OFFSET ADJUST 5

ANALOG INPUT 3

GAIN ADJUST 7

EOC 16

ANALOG

SUPPLY

+5V

CIRCUIT

OFFSET

GAIN

CONTROL LOGIC

–

SUPPLY

DIGITAL

• 11 Cabot Boulevard, Mansﬁ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com

S/H

TIMING AND

–5.2V

PRODUCT OVERVIEW

14-bit, 5MHz sampling A/D converter. This device

accurately samples fullscale input signals up to

Nyquist frequencies with no missing codes. The

dynamic performance of the ADS-944 has been opti-

mized to achieve a THD of –77dB and a SNR of 76dB.

ally complete ADS-944 contains a fast-settling

sample-hold ampliﬁ er, a subranging (two-pass) A/D

converter, an internal reference, timing and control

The low-cost ADS-944 is a high-performance,

Packaged in a small, 32-pin TDIP, the function-

Figure 1. ADS-944 Functional Block Diagram

GROUND

ANALOG

4, 6, 11

AMP

BUFFER

REF

SUPPLY

DIGITAL

+5V

FLASH

ADC

DAC

ADC

SUPPLY

+15V

ANALOG

SUPPLY

–5.2V

14-Bit, 5MHz Sampling A/D Converters

GROUND

logic, three-state outputs, and errorcorrection

circuitry. Digital input and output levels are TTL.

ADS-944 typically dissipates 2.95 Watts. The unit

is offered with a bipolar input range of ±1.25V.

Models are available for use in either commercial

(0 to +70°C) or HI-REL (–55 to +125°C) operating

temperature ranges. Typical applications include

radar signal analysis, medical/graphic imaging,

and FFT spectrum analysis.

DIGITAL

Requiring ±15V, +5V and –5.2V supplies, the

+5V ANALOG SUPPLY

–5.2V DIGITAL SUPPLY

ANALOG INPUT

ANALOG GROUND

OFFSET ADJUST

ANALOG GROUND

GAIN ADJUST

COMP. BITS

OUTPUT ENABLE

+5V DIGITAL SUPPLY

ANALOG GROUND

+15V SUPPLY

–15V SUPPLY

–5.2V ANALOG SUPPLY

DIGITAL GROUND

EOC

FUNCTION

01 Apr 2011 MDA_ADS-944.B02 Page 1 of 9

COMP.

BITS

INPUT/OUTPUT CONNECTIONS

31 BIT 1 (MSB)

30 BIT 1 (MSB)

29 BIT 2

28 BIT 3

27 BIT 4

26 BIT 5

25 BIT 6

24 BIT 7

23 BIT 8

22 BIT 9

21 BIT 10

20 BIT 11

19 BIT 12

18 BIT 13

17 BIT 14 (LSB)

9 OUTPUT ENABLE

ADS-944

START CONVERT

BIT 1 (MSB)

BIT 2

BIT 3

BIT 4

BIT 5

BIT 6

BIT 7

BIT 8

BIT 9

BIT 10

BIT 11

BIT 12

BIT 13

BIT 14 (LSB)

FUNCTION

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