GEC Plessey Semiconductors ZN428D, ZN428E8, ZN428J8 Datasheet

THIS DOCUMENT IS FOR MAINTENANCE

PURPOSES ONLY AND IS NOT

RECOMMENDED FOR NEW DESIGNS

DC16

1
2
3
4
5
6
7

BIT 3

BIT 1 (MSB)

9

10

BIT 8

NC

ANALOG OUTPUT

V

REF

IN

BIT 2

V

REF

OUT

ANALOG GROUND

11

12

13

14

BIT 7

BIT 5
BIT 4

BIT 6

+V

CC

(+5V)

1
2
3
4
5
6
7
8

9

10

11

12

13

14

15

16

ZN428J8

ZN428D

MP16 WIDE BODY

8

15

16

ENABLE

DIGITAL GROUND

ZN428E8

DP16

BIT 8

NC

ANALOG OUTPUT

V

REF

IN

V

REF

OUT

ANALOG GROUND

BIT 7

ENABLE

BIT 3

BIT 1 (MSB)

BIT 2

BIT 5
BIT 4

BIT 6

+V

CC

(+5V)

DIGITAL GROUND

■

■

■

■

■

■

■

■

AUGUST 1994

DS3007-2.1

ZN428E8/ZN428J8/ZN428D

8-BIT LATCHED INPUT D-A CONVERTER

The ZN428 is a monolithic 8-bit D-A converter with input
latches to facilitate updating from a data bus. The latch is
transparent when enable is LOW and the data is held when
enable is taken HIGH. The ZN428 also contains a 2.5V
reference the use of which is pin optional to retain flexibility.
An external fixed or varying reference may therefore be
substituted.

FEATURES

Contains DAC with Data Latch and On-Chip

Reference
Guaranteed Monotonic over the Full Operating
Temperature Range
Single +5V Supply
Microprocessor Compatible
TTL and 5V CMOS Compatible
800ns Settling Time
Complementary to ZN427 A to D Series
Commercial or Military Temperature Range

ORDERING INFORMATION

Device Type Operating temperature Package

ZN428D 0 ° C to +70 ° C MP16W
ZN428E8 0 ° C to +70 ° C DP16
ZN428J8 -55 ° C to +125 ° C DC16

Fig.1 Pin connections (not to scale) - top view

±

≤

±

±

±

Ω

±

° C °

µ

±

ZN428

ABSOLUTE MAXIMUM RA TINGS

Supply voltage V
Max.voltage, logic and V
Operating temperature range 0 ° C to +70 ° C (ZN428E8, ZN428D)

CC

inputs +V

REF

Storage temperature range -55 ° C to +125 ° C
Analog ground to digital ground

ELECTRICAL CHARACTERISTICS

(V

= +5V, T

CC

= 25 ° C unless otherwise specified)

amb

+7.0V

CC

-55 ° C to +125 ° C (ZN428J8)
200mV

Parameter

Min. Typ. Max.

Units Conditions

Internal V oltage Reference

Output voltage 2.475 2.550 2.625 V
Slope resistance - 0.5 2
V

REF OUT

T .C . - 50 - ppm/ ° C

123

R
C

REF
REF

= 390 Ω

= 1 µ F

Reference current 4 - 15 mA Note 1

D-A Converter

Linearity error - ­Differential non-linearity ­Linearity error T.C. ­Differential non-linearity T.C. -

0.5 - LSB
3 - ppm/ ° C
6 - ppm/ ° C

0.5 LSB 2.0V ≤ V

Offset voltage - 2 5 mV All bits off
Offset voltage T.C. ­Full-scale output 2.545 2.550 2.555
Full-scale output T.C. - 2 - ppm/ ° C

6-

µ

V/ ° C

External reference
V

REF

123

all bits ON

Analog output resistance - 4 - k Ω

REF IN

= 2.560V,

IN

3.0V

External reference voltage 0 - 3.0 V
Settling time to 0.5 LSB -

800

-

ns

1 LSB major transition
(Note 2)

-

1.25

-

s

All bits ON to OFF or
OFF to ON (Note 2)

Operating temperature range:

ZN428D and ZN428 E8

Supply voltage (V

ZN428J8

) 4.5 5.0 5.5 V

CC

0

-55

-

-

70

125

C

Supply current - 20 30 mA Note 3
Power consumption - 100 - mW

Note 1: See REFERENCE
Note 2: R
Note 3: All inputs HIGH (V

= 10M Ω , C

L

= 10pF

L

IH

= 3.5V)