LTC2378IMS-20PBF datasheet(3/28 Pages) LINER

Part #	LTC2378IMS-20PBF

Description	20-Bit, 1Msps, Low Power SAR ADC with 0.5ppm INL

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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3 / 28 page

LTC2378-20

3

237820f

For more information www.linear.com/LTC2378-20

DynaMic accuracy

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SINAD

Signal-to-(Noise + Distortion) Ratio

fIN = 2kHz, VREF = 5V

l

101

104

dB

SNR

Signal-to-Noise Ratio

fIN = 2kHz, VREF = 5V

fIN = 2kHz, VREF = 5V, REF/DGC = GND

fIN = 2kHz, VREF = 2.5V

l

101

99

95.4

104

102

98

dB

THD

Total Harmonic Distortion

fIN = 2kHz, VREF = 5V

fIN = 2kHz, VREF = 5V, REF/DGC = GND

fIN = 2kHz, VREF = 2.5V

l

–125

–123

–114

–113

dB

SFDR

Spurious Free Dynamic Range

fIN = 2kHz, VREF = 5V

l

115

128

dB

–3dB Input Bandwidth

34

MHz

Aperture Delay

500

ps

Aperture Jitter

4

ps

Transient Response

Full-Scale Step

312

ns

The l denotes the specifications which apply over the full operating temperature range,

otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 4, 8)

elecTrical characTerisTics

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN+

Absolute Input Range (IN+)

(Note 5)

l

–0.1

VREF + 0.1

V

VIN–

Absolute Input Range (IN–)

(Note 5)

l

–0.1

VREF + 0.1

V

VIN+ – VIN– Input Differential Voltage Range

VIN = VIN+ – VIN–

l

–VREF

+VREF

V

VCM

Common-Mode Input Range

l

VREF/2–

0.1

VREF/2

VREF/2+

0.1

V

IIN

Analog Input Leakage Current

0.01

µA

CIN

Analog Input Capacitance

Sample Mode

Hold Mode

45

5

pF

CMRR

Input Common Mode Rejection Ratio

fIN = 500kHz

86

dB

The l denotes the specifications which apply over the full operating

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

converTer characTerisTics

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Resolution

l

20

Bits

No Missing Codes

l

20

Bits

Transition Noise

2.3

ppmRMS

INL

Integral Linearity Error

(Note 6)

REF/DGC = GND, (Note 6)

l

–2

±0.5

2

ppm

DNL

Differential Linearity Error

(Note 10)

l

–0.5

±0.2

0.5

ppm

BZE

Bipolar Zero-Scale Error

(Note 7)

l

–13

0

13

ppm

Bipolar Zero-Scale Error Drift

±7

ppb/°C

FSE

Bipolar Full-Scale Error

(Note 7)

l

–100

±10

100

ppm

Bipolar Full-Scale Error Drift

±0.05

ppm/°C

The l denotes the specifications which apply over the full operating

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

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