2

LTC1854/LTC1855/LTC1856

185456fa

Consult LTC Marketing for parts specified with wider operating temperature ranges.

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2

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14

TOP VIEW

G PACKAGE

28-LEAD PLASTIC SSOP

28

27

26

25

24

23

22

21

20

19

18

17

16

15

COM

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

AGND1

CONVST

RD

SCK

SDI

DGND

SDO

BUSY

AGND3

AGND2

REFCOMP

A

G

A

U

A

R

BSOLUTEXI

TI

S

Ground Voltage Difference

DGND, AGND1, AGND2, AGND3 ......................

±0.3V

Analog Input Voltage

CH0-CH7, COM ..................................................

±30V

Digital Input Voltage (Note 4) ...... (DGND – 0.3V) to 10V

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

Operating Temperature Range

LTC1854C/LTC1855C/LTC1856C ............ 0

∞C to 70∞C

LTC1854I/LTC1855I/LTC1856I .......... – 40

∞C to 85∞C

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

∞C to 150∞C

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

∞C

(Notes 1, 2)

ORDER PART NUMBER

LTC1855CG

LTC1855IG

PACKAGE/ORDER I FOR ATIO

The

∞C.

MUXOUT connected to ADC inputs. (Notes 5, 6)

CO VERTER A D

ULTIPLEXER CHARACTERISTICS

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

LTC1854CG

LTC1854IG

LTC1856CG

LTC1856IG

LTC1854

LTC1855

LTC1856

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Resolution

●

12

14

16

Bits

No Missing Codes

●

12

14

15

Bits

Transition Noise

0.06

0.25

1

Integral Linearity Error

(Note 7)

●

±1

±1.5

±3LSB

Differential Linearity Error

●

–1

1

–1

1.5

–2

4

LSB

Bipolar Zero Error

(Note 8)

●

±5

±8

±23

LSB

Bipolar Zero Error Drift

±0.1

±0.1

±0.1

ppm/

∞C

Bipolar Zero Error Match

3

4

10

LSB

Bipolar Full-Scale Error

External Reference (Note 11)

●

±0.34

±0.14

±0.1

%

Internal Reference (Note 11)

±0.45

±0.40

±0.4

%

Bipolar Full-Scale Error Drift

External Reference

±2.5

±2.5

±2.5

ppm/

∞C

Internal Reference

±7

±7

±7

ppm/

∞C

Bipolar Full-Scale Error Match

5

10

15

LSB

Input Common Mode Range

●

±10

±10

±10

V

Input Common Mode Rejection Ratio

96

96

96

dB