5

LTC1392

INPUT

SHIFT

REGISTER

BANDGAP

CONTROL

AND TIMING

CS

4

LTC1392 • BD

SERIAL

PORT

ANALOG

INPUT

MUX

10-BIT

SAR

10

BITS

85

GND

TEMPERATURE

SENSOR

GND

1

6

7

COMP

10-BIT

CAPACITIVE DAC

+

+

–

+

–

–

2

CLK

3

shifted into this input.

of this output.

CLK (Pin 3): Shift Clock. This clock synchronizes the serial

data.

CS (Pin 4): Chip Select Input. A logic low on this input

enables the LTC1392.

GND (Pin 5): Ground Pin. GND should be tied directly to

an analog ground plane.

must be free from noise.

from noise and ripple by bypassing directly to the ground

plane.

Supply Current vs Sample Rate

TIME (SEC)

0

5

10

15

20

1392 G07

25

70

65

60

55

50

45

40

35

30

25

20

30

N8

S8

Thermal Response in Stirred

Oil Bath

SAMPLE FREQUENCY (Hz)

1000

100

10

1

0.1

0.1

10

100

1k

10k

100k

1392 G09

1

CS LOW BETWEEN SAMPLES

CS HIGH BETWEEN

SAMPLES

TIME (SEC)

0

50

100

150

200

1392 G08

250

70

65

60

55

50

45

40

35

30

25

20

300

N8

S8

Thermal Response in Still Air