LTC1855CG datasheet(2/24 Pages) LINER

2 / 24 page

LTC1854/LTC1855/LTC1856

185456fa

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

TOP VIEW

G PACKAGE

28-LEAD PLASTIC SSOP

COM

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

MUXOUT+

MUXOUT–

ADC+

ADC–

AGND1

CONVST

SCK

SDI

DGND

SDO

BUSY

OVDD

DVDD

AVDD

AGND3

AGND2

REFCOMP

VREF

BSOLUTEXI

Supply Voltage (OVDD = DVDD = AVDD = VDD) ........... 6V

Ground Voltage Difference

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

±0.3V

Analog Input Voltage

ADC+, ADC–

(Note 3) ...................(AGND1 – 0.3V) to (AVDD + 0.3V)

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

±30V

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

Digital Output Voltage .... (DGND – 0.3V) to (DVDD + 0.3V)

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

TJMAX = 110

∞C, qJA = 95∞C/W

(Notes 1, 2)

ORDER PART NUMBER

LTC1855CG

LTC1855IG

PACKAGE/ORDER I FOR ATIO

The

● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25

∞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

●

Bits

No Missing Codes

●

Bits

Transition Noise

0.06

0.25

LSBRMS

Integral Linearity Error

(Note 7)

●

±1

±1.5

±3LSB

Differential Linearity Error

●

–1

1.5

–2

LSB

Bipolar Zero Error

(Note 8)

●

±5

±8

±23

LSB

Bipolar Zero Error Drift

±0.1

ppm/

∞C

Bipolar Zero Error Match

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

ppm/

∞C

Internal Reference

±7

ppm/

∞C

Bipolar Full-Scale Error Match

LSB

Input Common Mode Range

●

±10

Input Common Mode Rejection Ratio

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