LTC1420IGN datasheet(7/20 Pages) LINER

No. de pieza	LTC1420IGN

Descripción Electrónicos	12-Bit, 10Msps, Sampling ADC

PDF	20 Pages

Scroll/Zoom	100%

Fabricante Electrónico	LINER [Linear Technology]

Página de inicio	http://www.linear.com

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LTC1420

CLK

1420 TD

ANALOG

INPUT

DATA

OUTPUT

tCONV

tCLOCK

N – 3

N + 1

N + 2

N + 3

N – 2

N – 1

tACQ

DIGITAL CORRECTION

LOGIC

OUTPUT

BUFFERS

1420 BD

MODE SELECT

PIPELINED 12-BIT ADC

S/H

0V OR –5V

VCM

GAIN

VDD

(PIN 7)

VDD

(PIN 23)

OVDD

OGND

OPTIONAL 3V

LOGIC SUPPLY

D11 (MSB)

D0 (LSB)

CLK

SENSE

VREF

–AIN

AIN

GND

(PIN 24)

GND

(PIN 8)

VSS

GND

(PIN 6)

2.048V

2.5V

REFERENCE

PIN FUNCTIONS

FUNCTIONAL BLOCK DIAGRA

TI I G DIAGRA

VDD (Pin 23): Analog 5V Supply. Bypass to GND with a 1µF

ceramic.

GND (Pin 24): Analog Power Ground.

VSS (Pin 25): Negative Supply. Can be – 5V or 0V. If VSS is

not shorted to GND, bypass to GND with a 1

µF ceramic.

CLK (Pin 26): Conversion Start Signal. This active high

signal starts a conversion on its rising edge.

OF (Pin 27): Overflow Output. This signal is high when the

digital output is 011111111111 or 100000000000.

GAIN (Pin 28): Gain Select for Input PGA. 5V selects an

input gain of 1, 0V selects a gain of 2.

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