5

LTC1658

TYPICAL PERFOR A CE CHARACTERISTICS

Broadband Noise

TEMPERATURE (

°C)

–55

–25

5

35

65

95

125

1658 G06

5

4

3

2

1

0

–1

–2

–3

–4

–5

Gain Error vs Temperature

BW = 1Hz TO

200

µs/DIV

1658 G08

100kHz

CLK (Pin 1): The TTL Level Input for the Serial Interface

Clock.

on the rising edge of the serial clock and is loaded MSB

first. The LTC1658 requires a 16-bit word to be loaded in.

The last two bits are don’t cares.

CS/LD (Pin 3): The TTL Level Input for the Serial Inter-

face Enable and Load Control. When CS/LD is low the

CLK signal is enabled, so the data can be clocked in.

When CS/LD is pulled high, data is loaded from the shift

register into the DAC register, updating the DAC output.

Valid on the Rising Edge of the Serial Clock.

GND (Pin 5): Ground.

REF (Pin 6): Reference Input. There is a gain of one from

Information).

1LSB/DIV