ADS1282IPW datasheet(4/52 Pages) TI

4 / 52 page

ADS1282

SBAS418E – SEPTEMBER 2007 – REVISED OCTOBER 2008 ........................................................................................................................................ www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

Limit specifications at –40°C to +85°C. Typical specifications at +25°C, AVDD = +2.5V, AVSS = –2.5V, fCLK = 4.096MHz, VREFP = +2.5V,

VREFN = –2.5V, DVDD = +3.3V, CAPN – CAPP = 10nF, PGA = 1, High-Resolution Mode, and fDATA = 1000SPS, unless otherwise noted.

ADS1282

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

DC PERFORMANCE (continued)

PGA = 1

ppm/°C

Gain drift

PGA = 16

ppm/°C

Gain matching(9)

0.3

0.8

Common-mode rejection

fCM = 60Hz

(10)

110

AVDD, AVSS

Power-supply rejection

fPS = 60Hz

(10)

DVDD

115

VOLTAGE REFERENCE INPUTS

(AVDD – AVSS)

Reference input voltage

(VREF = VREFP – VREFN)

0.5

+ 0.2

Negative reference input

VREFN

AVSS – 0.1

VREFP – 0.5

Positive reference input

VREFP

VREFN + 0.5

AVDD + 0.1

High-resolution mode

Ω

Reference input impedance

Low-power mode

170

Ω

DIGITAL FILTER RESPONSE

Passband ripple

±0.003

Passband (–0.01dB)

0.375 × fDATA

Bandwidth (–3dB)

0.413 × fDATA

High-pass filter corner

0.1

Stop band attenuation(11)

135

Stop band

0.500 × fDATA

Minimum phase filter

5/fDATA

Group delay

Linear phase filter

31/fDATA

Minimum phase filter

10/fDATA

Settling time (latency)

Linear phase filter

62/fDATA

DIGITAL INPUT/OUTPUT

VIH

0.8 × DVDD

DVDD

VIL

DGND

0.2 × DVDD

VOH

IOH = 1mA

0.8 × DVDD

VOL

IOL = 1mA

0.2 × DVDD

Input leakage

0 < VDIGITAL IN < DVDD

±10

µA

Clock input

fCLK

4.096

MHz

Serial clock rate

fSCLK

fCLK/2

MHz

(9)

Gain match relative to PGA = 1.

(10) fCM is the input common-mode frequency. fPS is the power-supply frequency.

(11) Input frequencies in the range of NfCLK/512 ± fDATA/2 (N = 1, 2, 3...) can mix with the modulator chopping clock. In these frequency

ranges intermodulation = 120dB, typ.

Submit Documentation Feedback

Product Folder Link(s): ADS1282

ADS1282IPW Datasheet(PDF) 4 Page - Texas Instruments

ADS1282IPW Datasheet(HTML) 4 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

Datasheet Download

Link URL