ADS8329IBPWR datasheet(5/51 Pages) TI1

Part #	ADS8329IBPWR

Description	LOW-POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE

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Manufacturer	TI1 [Texas Instruments]

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ELECTRICAL CHARACTERISTICS

ADS8329

ADS8330

www.ti.com ................................................................................................................................................... SLAS516C – DECEMBER 2006 – REVISED JULY 2009

TA = –40°C to 85°C, +VA = 2.7 V to 3.6 V, +VBD = 1.65 V to 1.5×(+VA), VREF = 2.5 V, fSAMPLE = 1 MHz for 3 V ≤ +VA ≤ 3.6 V,

fSAMPLE = 900 kHz for 3 V < +VA ≤ 2.7 V using external clock (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

108

Input channel isolation, ADS8330 only

dB

VI = ±1.25 VPP at 50 kHz

101

SYSTEM PERFORMANCE

Resolution

16

Bits

No missing codes

16

Bits

ADS8329IB,

–1.75

±1

1.75

ADS8330IB

INL

Integral linearity

LSB(2)

ADS8329I, ADS8330I

–2.5

±1.5

2.5

ADS8329IB,

–1

±0.5

1

Differential

ADS8330IB

DNL

LSB(2)

linearity

ADS8329I, ADS8330I

–1

±0.8

2

ADS8329IB,

–0.5

±0.05

0.5

ADS8330IB

EO

Offset error(3)

mV

ADS8329I, ADS8330I

–0.8

±0.2

0.8

Offset error drift

FSR = 2.5 V

+0.8

ppm/°C

EG

Gain error

–0.25

–0.04

0.25

%FSR

Gain error drift

+0.5

ppm/°C

At dc

70

CMRR

Common-mode rejection ratio

dB

VI = 0.4 VPP at 1 MHz

50

Noise

33

µV RMS

PSRR

Power-supply rejection ratio

At FFFFh output code(3)

78

dB

SAMPLING DYNAMICS

tCONV

Conversion time

18

CCLK

tSAMPLE1

Manual trigger

3

Acquisition time

CCLK

tSAMPLE2

Auto trigger

3

Throughput rate

1

MHz

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 2.5 V when +VA = 3 V.

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