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LTC2188

2188f

analog inpuT The

denotes the specifications which apply over the full operating temperature range, otherwise

specifications are at TA = 25°C. (Note 5)

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Analog Input Range (AIN+ – AIN–)

1.7V < VDD < 1.9V

1 to 2

VP-P

VIN(CM)

Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8) l

0.7

VCM

1.25

VSENSE

External Voltage Reference Applied to SENSE External Reference Mode

0.625

1.250

1.300

IINCM

Analog Input Common Mode Current

Per Pin, 20Msps

µA

IIN1

Analog Input Leakage Current (No Encode)

0 < AIN+, AIN– < VDD

–1

µA

IIN2

PAR/SER Input Leakage Current

0 < PAR/SER < VDD

–3

µA

IIN3

SENSE Input Leakage Current

0.625 < SENSE < 1.3V

–6

µA

tAP

Sample-and-Hold Acquisition Delay Time

tJITTER

Sample-and-Hold Acquisition Delay Jitter

Single-Ended Encode

Differential Encode

0.07

0.09

psRMS

CMRR

Analog Input Common Mode Rejection Ratio

BW-3B

Full-Power Bandwidth

Figure 6 Test Circuit

550

MHz

converTer characTerisTics The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. (Note 5)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Resolution (No Missing Codes)

Bits

Integral Linearity Error

Differential Analog Input (Note 6)

–6.5

±2

6.5

LSB

Differential Linearity Error

Differential Analog Input

–0.9

±0.5

0.9

LSB

Offset Error

(Note 7)

–7

±1.5

Gain Error

Internal Reference

External Reference

–1.8

±1.5

–0.5

0.8

%FS

Offset Drift

±10

µV/°C

Full-Scale Drift

Internal Reference

External Reference

±30

±10

ppm/°C

Gain Matching

±0.3

%FS

Offset Matching

±1.5

Transition Noise

3.2

LSBRMS

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