4

LTC1426

TEMPERATURE (

°C)

–40

0

100

200

300

400

500

600

–15

10

35

60

1426 G04

85

TEMPERATURE (

°C)

–40

0

10

20

30

40

50

60

–15

10

35

60

1426 G06

85

PUSHBUTTON

MODE

PULSE

MODE

Supply Current vs Temperature

LOGIC INPUT VOLTAGE (V)

0

38.5

36.5

34.5

32.5

30.5

28.5

26.5

24.5

22.5

4

1426 F05

1

2

3

5

PULSE

MODE

PUSHBUTTON

MODE

CLK1 AND CLK2

TIED TOGETHER

Supply Current

vs Logic Input Voltage

from noise and ripple by bypassing directly to the ground

plane.

SHDN (Pin 8): Shutdown. A logic low puts the chip into

shutdown mode with the PWM outputs in high imped-

ance. The digital settings for the DACs are retained in

shutdown.

CLK1 (Pin 1): Channel 1 Clock/Pushbutton Input.

CLK2 (Pin 2): Channel 2 Clock/Pushbutton Input.

GND (Pin 3): Ground. It is recommended that GND be tied

to a ground plane.

PWM1 (Pin 4): Channel 1 PWM Output.

PWM2 (Pin 5): Channel 2 PWM Output.

DAC output buffers and can be used to control the output

CLK1

CLK2

1426 TC01

1426 TC02

CLK1

CLK2

Pushbutton Mode Timing

Pulse Mode Timing

TI I G DIAGRA S

Minimum Clock High Time

vs Temperature