Datasheet > ADS131B24-Q1

ADS131B24-Q1

更新时间： 2024-04-09 19:03:23

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汽车级、24 位、64kSPS、四通道同步采样 Δ-Σ ADC

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ADS131B24-Q1 数据手册

ADS131B24-Q1

www.ti.com.cn

UNIT

ZHCSN80 – JULY 2023

7.4 Thermal Information

TQFP (PHP)

48 PINS

23.7

THERMAL METRIC⁽¹⁾

R_θJA

Junction-to-ambient thermal resistance

Junction-to-case (top) thermal resistance

°C/W

R_θJC(top)

R_θJB

15.3

Junction-to-board thermal resistance

7.8

Ψ_JT

Junction-to-top characterization parameter

Junction-to-board characterization parameter

Junction-to-case (bottom) thermal resistance

0.2

Ψ_JB

7.7

R_θJC(bot)

1.3

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

7.5 Electrical Characteristics

minimum and maximum specifications apply from T_A= –40°C to +105°C; typical specifications are at T_A= 25°C; all

specifications are at APWR = 5 V, DPWR = 5 V, IOVDD = 3.3 V, external clock, f_CLK= 8.192 MHz, global-chop mode

disabled, ADC1y data rate = 1 kSPS (unless otherwise noted)

PARAMETER

CURRENT MEASUREMENT ADCS (ADC1A, ADC1B)

Resolution

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Bits

V/V

Gain settings

4, 8, 16, 32

f_DATA

Output data rate

f_CLK= 8.192 MHz

500

64k

SPS

All data rates, all gains, global-chop enabled or

disabled, V_CPy= V_CNy= 0 V

Absolute input current

±0.5

±1

All data rates, all gains, global-chop enabled or

disabled, V_CPy= V_CNy= 0 V

Differential input current

–5

All data rates, all gains, global-chop enabled or

disabled

Differential input impedance

1.8

MΩ

Gain = 4, global-chop disabled

Gain = 8 to 32, global-chop disabled

All gains, global-chop enabled

All gains, global-chop disabled

All gains, global-chop enabled

±1

±15

±0.5

Offset error (input referred)

µV

–1.5

1.5

100

Offset drift

Gain error

nV/°C

T_A= 25°C, all gains, single-ended operation with

CNy held at AGNDy, including initial accuracy of

REFy

–0.15%

±0.05%

0.15%

All gains, single-ended operation with CNy held

at AGNDy, including drift of REFy

Gain drift

20 ppm/°C

ppm

1000 hours at 85°C,

all gains, including long-term drift of REFy

Gain long-term drift

±100

Gain match

Between gain settings

–0.12%

±0.03%

0.65

110

0.12%

Noise (input referred)

Gain = 8, f_DATA= 1 kSPS

µV_RMS

At DC, global-chop disabled

CMRR

PSRR

Common-mode rejection ratio

Power-supply rejection ratio

At DC, global-chop enabled

113

APWR at DC, global-chop enabled or disabled

DPWR at DC, global-chop enabled or disabled

AVDD at DC, global-chop enabled or disabled

IOVDD at DC, global-chop enabled or disabled

133

115

131

English Data Sheet: SBASAA4

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