ADS8327IBPW datasheet(6/51 Pages) TI1

Part #	ADS8327IBPW

Description	LOW POWER, 16-BIT, 500-kHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE

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Manufacturer	TI1 [Texas Instruments]

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ADS8327

ADS8328

SLAS415E

– APRIL 2006 – REVISED JANUARY 2011

www.ti.com

SPECIFICATIONS

TA = –40°C to 85°C, +VA = 4.5 V to 5.5 V, +VBD = 1.65 V to 5.5 V, VREF = 4.096 V, and fSAMPLE = 500 kHz, unless otherwise

noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG INPUT

Full-scale input voltage (1)

+IN

– (–IN) or (+INx – COM)

0

+VREF

V

+IN, +IN0, +IN1

AGND

– 0.2

+VA + 0.2

Absolute input voltage

V

–IN or COM

AGND

– 0.2

AGND + 0.2

Input capacitance

40

45

pF

No ongoing conversion,

Input leakage current

–1

1

nA

DC Input

At dc

109

Input channel isolation, ADS8328 only

dB

VI = ±1.25 VPP at 50 kHz

101

SYSTEM PERFORMANCE

Resolution

16

Bits

No missing codes

16

Bits

ADS8327IB,

–2

±1.5

2

ADS8328IB

INL

Integral linearity

LSB(2)

ADS8327I, ADS8328I

–3

±2

3

ADS8327IB,

–1

±0.7

1

Differential

ADS8328IB

DNL

LSB(2)

linearity

ADS8327I, ADS8328I

–1

±1

2

ADS8327IB,

–1

±0.4

1

ADS8328IB

EO

Offset error(3)

mV

ADS8327I, ADS8328I

–1.25

±0.4

1.25

Offset error drift

0.5

ppm/

°C

EG

Gain error

–0.25

–0.07

0.25

%FSR

Gain error drift

0.3

ppm/

°C

At dc

70

CMRR

Common-mode rejection ratio

dB

VI = 1 VPP at 1 MHz

50

Noise

33

mV RMS

PSRR

Power-supply rejection ratio

At FFFFh output code(3)

78

dB

SAMPLING DYNAMICS

tCONV

Conversion time

18

CCLK

tSAMPLE

Manual trigger

3

1

Acquisition time

CCLK

tSAMPLE

Auto trigger

3

2

Throughput rate

500

kHz

Aperture delay

5

ns

Aperture jitter

10

ps

Step response

100

ns

Overvoltage recovery

100

ns

(1)

Ideal input span, does not include gain or offset error.

(2)

LSB means least significant bit.

(3)

Measured relative to an ideal full-scale input [+IN

– (–IN)] of 4.096 V when +VA = 5 V.

6

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Product Folder Link(s): ADS8327 ADS8328

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