SPT7937 datasheet(1/11 Pages) CADEKA

Nome de Peças	SPT7937

Descrição Electrónicos	12-BIT, 28 MSPS, 170 mW A/D CONVERTER

PDF	11 Pages

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Fabricante Electrônico	CADEKA [Cadeka Microcircuits LLC.]

Página de início	http://www.cadeka.com

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SPT7937

12-BIT, 28 MSPS, 170 mW A/D CONVERTER

TECHNICAL DATA

MARCH 5, 2002

FEATURES

• Monolithic 28 MSPS analog-to-digital converter

• 170 mW power dissipation

• On-chip track-and-hold

• Single +5 V power supply

• TTL/CMOS outputs

• 5 pF input capacitance

• Selectable +3 V or +5 V logic I/O

APPLICATIONS

• All high-speed applications where

low power dissipation is required

• Video imaging

• Medical imaging

• IR imaging

• Digital communications

DESCRIPTION

The SPT7937 is a 12-bit monolithic, low-cost, low-power

analog-to-digital converter capable of minimum sample

rates of 28 MSPS. The SPT7937 has incorporated propri-

etary parallel SAR circuit design and CMOS processing

technologies to achieve its advanced performance.

The on-chip track-and-hold function assures very good

dynamic performance without the need for external

components.

BLOCK DIAGRAM

Power dissipation is extremely low at only 170 mW typical

at 28 MSPS with a power supply of +5.0 V. The digital out-

puts are +3 V or +5 V, and are user selectable. Inputs and

outputs are TTL/CMOS compatible to interface with TTL/

CMOS logic systems. Output data format is straight binary.

The SPT7937 is available in a 28-lead SSOP package

over the industrial temperature range.

AIN

CLK In

...

13-Bit

SAR

DAC

ADC Section 1

T/H

13

13-Bit

SAR

DAC

ADC Section 18

Auto-

Zero

CMP

Auto-

Zero

CMP

T/H

13

1:18

Mux

13

13-Bit

18:1

Mux/

Error

Correction

Timing

and

Control

P1

P2

P17

P18

ADC Section 2

ADC Section 17

..

.

Reference Ladder

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

DØ (LSB)

D11 (MSB)

D12 Out of Range

VRLS

VRHF

VRLF

VRHS

..

.

..

.

Nº de peça semelhante - SPT7937

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
List of Unclassifed Man...	SPT7937	91Kb / 11P	12-BIT, 28 MSPS, 170 mW A/D CONVERTER
List of Unclassifed Man...	SPT7937SIR	91Kb / 11P	12-BIT, 28 MSPS, 170 mW A/D CONVERTER

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Descrição semelhante - SPT7937

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Analog Devices	AD9430	1Mb / 20P	12-Bit, 170 MSPS 3.3V A/D Converter
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Fairchild Semiconductor	SPT7935	54Kb / 8P	12-BIT, 20 MSPS, 79 mW A/D CONVERTER
Fairchild Semiconductor	SPT7936	59Kb / 8P	12-BIT, 28 MSPS SAMPLING A/D CONVERTER
List of Unclassifed Man...	SPT7937	91Kb / 11P	12-BIT, 28 MSPS, 170 mW A/D CONVERTER
Cadeka Microcircuits LL...	SPT7935	156Kb / 8P	12-BIT, 20 MSPS, 79 mW A/D CONVERTER
	SPT7936	162Kb / 8P	12-BIT, 28 MSPS SAMPLING A/D CONVERTER
	SPT7938	185Kb / 10P	12-BIT, 40 MSPS, 170 mW A/D CONVERTER
Analog Devices	AD9430	1Mb / 44P	12-Bit, 170/210 MSPS 3.3 V A/D Converter Rev. E
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