LTC2231 datasheet(4/32 Pages) LINER

Part #	LTC2231

Description	10-Bit,170Msps/135Msps ADCs

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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4 / 32 page

LTC2230/LTC2231

4

22301fb

DIGITAL I PUTS A D DIGITAL OUTPUTS The ● denotes the specifications which apply over the

full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)

I TER AL REFERE CE CHARACTERISTICS (Note 4)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VCM Output Voltage

IOUT = 0

1.570

1.600

1.630

V

VCM Output Tempco

±25

ppm/

°C

VCM Line Regulation

3.1V < VDD < 3.5V

3

mV/V

VCM Output Resistance

–1mA < IOUT < 1mA

4

Ω

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ENCODE INPUTS (ENC+, ENC–)

VID

Differential Input Voltage

●

0.2

V

VICM

Common Mode Input Voltage

Internally Set

1.6

V

Externally Set (Note 7)

●

1.1

1.6

2.5

V

RIN

Input Resistance

6k

Ω

CIN

Input Capacitance

(Note 7)

3

pF

LOGIC INPUTS (OE, SHDN)

VIH

High Level Input Voltage

VDD = 3.3V

●

2V

VIL

Low Level Input Voltage

VDD = 3.3V

●

0.8

V

IIN

Input Current

VIN = 0V to VDD

●

–10

10

μA

CIN

Input Capacitance

(Note 7)

3

pF

LOGIC OUTPUTS (CMOS MODE)

OVDD = 3.3V

COZ

Hi-Z Output Capacitance

OE = High (Note 7)

3

pF

ISOURCE

Output Source Current

VOUT = 0V

50

mA

ISINK

Output Sink Current

VOUT = 3.3V

50

mA

VOH

High Level Output Voltage

IO = –10μA

3.295

V

IO = –200μA

●

3.1

3.29

V

VOL

Low Level Output Voltage

IO = 10μA

0.005

V

IO = 1.6mA

●

0.09

0.4

V

OVDD = 2.5V

VOH

High Level Output Voltage

IO = –200μA

2.49

V

VOL

Low Level Output Voltage

IO = 1.6mA

0.09

V

OVDD = 1.8V

VOH

High Level Output Voltage

IO = –200μA

1.79

V

VOL

Low Level Output Voltage

IO = 1.6mA

0.09

V

LOGIC OUTPUTS (LVDS MODE)

VOD

Differential Output Voltage

100

Ω Differential Load

●

247

350

454

mV

VOS

Output Common Mode Voltage

100

Ω Differential Load

●

1.125

1.250

1.375

V

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