June 1994

10

Philips Semiconductors

Product specification

8-bit digital-to-analog converters

TDA8712; TDF8712

Fig.4 Switching characteristics.

andbook, full pagewidth

MBC913

CLK

1.3 V

code 255

1.3 V

code 0

input data

(example of a

full-scale input

transition)

10 %

50 %

90 %

1 LSB

1 LSB

V

CCA 1.6 V

(code 255)

t d

S1

t

S2

t

PD

t

VOUT

VCCA

(code 0)

Fig.5 Latched and transparent mode.

During the transparent mode (CLK = LOW), any change of input data will be seen at the output. During the latched mode (CLK = HIGH), the analog output

remains stable regardless of any change at the input. A change of input data during the latched mode will be seen on the falling edge of the clock

(beginning of the transparent mode).

handbook, full pagewidth

MBC914 - 1

transparent

mode

latched

mode

1.3 V

CLK

input

codes

V OUT

transparent

mode

latched mode

(stable output)

beginning of

transparent

mode

analog

output

voltage