LTC1286CS8 datasheet(7/24 Pages) LINER

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LTC1286/LTC1298

TYPICAL PERFORMANCE CHARACTERISTICS

TEMPERATURE (°C)

–55

100

150

LT1286/98 • G14

–35

–15

200

VCC = VREF = 5V

SUPPLY VOLTAGE (V)

LTC 1286/98 G17

TA = 25°C

TEMPERATURE (°C)

–60

1000

100

0.1

0.01

100

1196/98 G19

–20

140

–40

120

VCC = 5V

VREF = 5V

ON CHANNEL

OFF CHANNEL

Input Channel Leakage Current

vs Temperature

Digital Input Logic Threshold

vs Supply Voltage

Minimum Clock Frequency

for 0.1 LSB Error vs Temperature

PIN FUNCTIONS

LTC1286

VREF (Pin 1): Reference Input. The reference input defines

the span of the A/D converter.

IN+ (Pin 2): Positive Analog Input.

IN – (Pin 3): Negative Analog Input.

GND (Pin 4): Analog Ground. GND should be tied directly

to an analog ground plane.

CS/SHDN (Pin 5): Chip Select Input. A logic low on this

input enables the LTC1286. A logic high on this input

disables and powers down the LTC1286.

DOUT (Pin 6): Digital Data Output. The A/D conversion

result is shifted out of this output.

CLK (Pin 7): Shift Clock. This clock synchronizes the serial

data transfer and determines conversion speed.

VCC (Pin 8): Power Supply Voltage. This pin provides

power to the A/D converter. It must be kept free of noise

and ripple by bypassing directly to the analog ground

plane.

LTC1298

CS/SHDN (Pin 1): Chip Select Input. A logic low on this

input enables the LTC1298. A logic high on this input

disables and powers down the LTC1298.

CH0 (Pin 2): Analog Input.

CH1 (Pin 3): Analog Input.

GND (Pin 4): Analog Ground. GND should be tied directly

to an analog ground plane.

DIN (Pin 5): Digital Data Input. The multiplexer address is

shifted into this input.

DOUT (Pin 6): Digital Data Output. The A/D conversion

result is shifted out of this output.

CLK (Pin 7): Shift Clock. This clock synchronizes the

serial data transfer and determines conversion speed.

VCC/VREF (Pin 8): Power Supply and Reference Voltage.

This pin provides power and defines the span of the A/D

converter. It must be kept free of noise and ripple by

bypassing directly to the analog ground plane.

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