SP674AS/883 데이터 시트보기 (PDF) - Signal Processing Technologies

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SP674AS/883

12–Bit Sampling A/D Converters

Signal Processing Technologies 

HS574A/SP674A

12–Bit Sampling A/D Converters

s Complete12–bitA/DConverterswithSample–

Hold, Reference, Clock and Tri–state Outputs

s Low Power Dissipation — 110mW Maximum

s 12–Bit Linearity Over Temperature

s Fast Conversion time:

25µs Max (HS574A)

15µs Max (SP674A)

s Monolithic Construction

DESCRIPTION…

The HS574A/SP674A Series are complete 12–bit successive–approximation A/D converters

integrated on a single die with tri-state output latches, an internal reference, clock and a sample–

hold. They feature 12–bit linearity over temperature, low power dissipation and fast conversion

time. They are available in commercial and military temperature ranges.

STS DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DGND

28

27

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25 24

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15

NIBBLE A

NIBBLE B

THREE–STATE BUFFERS AND CONTROL

NIBBLE C

12–BIT SAR

OSC

COMP

12–BIT

CAPACITANCE

DAC

CONTROL LOGIC

OFFSET/GAIN

TRIM

REF

7.5K 15K

7.5K 15K

N/C

7.5K

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VLOGIC 12/8 CS

A0 R/C CE VCC REF AGND REF VEE BIP 10V 20V

OUT

IN

OFF IN

IN

3

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