LTC1286CS8 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1286CS8' PDF : 24 Pages View PDF
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Clock Frequency
for 0.1 LSB Error vs Temperature
200
VCC = VREF = 5V
150
Digital Input Logic Threshold
vs Supply Voltage
3
TA = 25°C
100
2
50
0
–55 –35 –15 5 25 45
TEMPERATURE (°C)
65 85
LT1286/98 • G14
1
34
5
6
7
8
9
SUPPLY VOLTAGE (V)
LTC 1286/98 G17
LTC1286/LTC1298
Input Channel Leakage Current
vs Temperature
1000
VCC = 5V
VREF = 5V
100
10
ON CHANNEL
1
OFF CHANNEL
0.1
0.01
– 60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
1196/98 G19
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.
7
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