19

LTC1291

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

S

APPLICATI

I FOR ATIO

data is output MSB-first. CS is driven at 1/64 the clock

oscilloscope that is set up to trigger on the falling edge

of CS (Figure 17).

A “Quick Look” Circuit for the LTC1291

Users can get a quick look at the function and timing of

the LTC1291 by using the following simple circuit

applied to CH1 with respect to the ground plane. The

Figure 16. “Quick Look” Circuit for the LTC1291

A1

CLR1

1QA

1QB

1QC

1QD

GND

A2

CLR2

2QA

2QB

2QC

2QD

74HC393

0.1

µF

TO OSCILLOSCOPE

0.1

µF

+

5V

22

µF TANTALUM

f

f/64

CLOCK IN 1MHz

LTC1291 F16

CLK

LTC1291

CS

CH0

CH1

GND

CLK

CS

D

OUT

NULL

BIT

MSB

(B11)

LSB

(B0)

FILLS WITH

ZEROES

VERTICAL: 5V/DIV

HORIZONTAL: 5

µs/DIV

Figure 17. Scope Trace of the LTC1291 "Quick Look"