Philips Semiconductors Linear Products

Product specification

AM6012

12-Bit multiplying D/A converter

August 31, 1994

785

APPLICATION CIRCUITS

Figure 5. CRT Display Driver

NOTES:

1. Full differential drive lowers power supply voltage.

2. Eliminates inverting amplifiers and transformers.

3. Independent beam centering controls.

60V COMMON

MODE LEVEL

AM6012

–15V

“X” INPUT

“Y” INPUT

CRT

+120VDC

–15V

AM6012

IO

IO

IO

IO

CONVERSION TIME PER TRIAL, ns

Figure 6. 12-Bit High-Speed A/D Converter

CONVERSION

TIME (ns)

TYP

WORST

CASE

SAR

NE529

TOTAL

X 13

33

100

383ns

5.0

µs

55

150

705ns

9.1

µs

1.25

1.00

0.75

0.50

0.25

0.00

CONVERSION TIME vs ACCURACY

100

200

300

400

500

600

700

800

AM6012

WITH

NE529

(TYP)

(WORST CASE)

AM6012

WITH

NE529

SERIAL

DATA OUT

AM6012

E

CLOCK

CP

Q11

2504 SAR

(NAT’L, AMD)

+15V

+10V

REF

5.000k

5.000k

MSB

COMP

LSB

NE529

ANALOG IN

(0–10V)

V(–0

V(+)

LSB

MSB

0.1

µF

10.000k

Ω

2.5k

Ω

0.001

µF

IO

IO

0.001

µF

0.01

µF

1

µF 1µF

10.000k

Ω

S

CC

DO

D

O0

VREF