3

®

ADC774

*Same specification as ADC774JH, JP, SH.

NOTES: (1) With fixed 50

Ω resistor from Ref Out to Ref In. This parameter is also adjustable to zero at +25C. (2) FS in this specification table means Full Scale Range.

That is, for a

±10V input range FS means 20V; for a 0V to +10V range, FS means 10V. The term Full Scale for these specification instead of Full-Scale Range is used

to be consistent with other vendors' specifications tables. (3) Using internal reference. (4) See “Controlling the ADC774” section for detailed information concerning

digital timing. (5) The Harris HI-774 uses a subranging/error correction technique that allows one to begin conversion before a preceding sample-hold or multiplexer

has settled to

±1/2LSB. For 12-bit accurate conversions, the input transient to the ADC774 must settle to less than ±1/2LSB before conversion is started. The ADC774

is compatible with HI-774 in all other respects. (6) External loading must be constant during conversion. The reference output requires no buffer amplifier with either

±12V or ±15V power supplies.

ELECTRICAL

ADC774J, ADC774SH

ADC774K, ADC774TH

PARAMETER

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

INTERNAL REFERENCE VOLRAGE

Voltage

+9.9

+10

+10.1

*

*

*

V

2.0

*

mA

POWER SUPPLY REQUIREMENTS

+11.4

+16.5

*

*

V

–11.4

–16.5

*

*

V

+4.5

+5.5

*

*

V

3.5

5

*

*

mA

15

20

*

*

mA

915

*

*

mA

Power Dissipation (

±15V Supplies)

`

325

450

*

*

mW

Specifications: J, K Grades

0

+75

*

*

°C

S, T Grades

–55

+125

*

*

°C

Storage

–65

+150

*

*

°C

PIN CONFIGURATION

Top View

DIP

+5VDC Supply (V

)

12/8

CS

A

R/C

CE

+V

Ref Out

Analog Common

Ref In

V

Bipolar Offset

10V Range

20V Range

STATUS

DB11 (MSB)

DB10

DB9

DB8

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0 (LSB)

Digital Common

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

LOGIC

CC

EE

5

Ω

10k

Ω

10V

Reference

12-Bit

D/A

Converter

Control

Logic

Power-up Reset

Clock

12 Bits

Comparator

12 Bits

O

5

Ω

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes

no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change

without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant

any BURR-BROWN product for use in life support devices and/or systems.