2

LTC1274/LTC1277

(Notes 1, 2)

Bipolar Operation Only .......................... – 6V to GND

Bipolar Operation Only ....................................... 12V

Analog Input Voltage (Note 3)

Digital Input Voltage (Note 4)

Unipolar Operation .............................. – 0.3V to 12V

A

G

A

U

A

R

BSOLUTEXI

TI

S

PACKAGE/ORDER I FOR ATIO

ORDER

PART NUMBER

LTC1274CS

LTC1274IS

ORDER

PART NUMBER

LTC1277CS

LTC1277IS

Digital Output Voltage

Power Dissipation ............................................. 500mW

Operating Temperature Range

Commercial ............................................ 0

°C to 70°C

Industrial ........................................... – 40

°C to 85°C

Storage Temperature Range ................ – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec) ................. 300

°C

1

2

3

4

5

6

7

8

9

10

11

12

TOP VIEW

24

23

22

21

20

19

18

17

16

15

14

13

AGND

D11 (MSB)

D10

D9

D8

D7

D6

D5

D4

DGND

BUSY

CS

RD

CONVST

SLEEP

REFRDY

D0

D1

D2

D3

SW PACKAGE

24-LEAD PLASTIC SO

1

2

3

4

5

6

7

8

9

10

11

12

TOP VIEW

24

23

22

21

20

19

18

17

16

15

14

13

+

–

AGND

REFRDY

SLEEP

NAP

D7

D6

D5

D4

DGND

BUSY

CS

RD

CONVST

HBEN

D0/8

D1/9

D2/10

D3/11

(D11 = MSB)

SW PACKAGE

24-LEAD PLASTIC SO

Consult factory for Military grade parts.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Resolution (No Missing Codes)

q

12

Bits

Integral Linearity Error

(Note 7)

q

±1

LSB

Differential Linearity Error

q

±1

LSB

Unipolar Offset Error

±6

LSB

q

±8

LSB

Bipolar Offset Error

(Note 8)

±8

LSB

q

±10

LSB

Gain Error

±20

LSB

Gain Error Tempco

q

±10

±45

ppm/

°C

CC

HARA TERISTICS

CO VERTER

With Internal Reference (Notes 5, 6)