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| 型号： | ADS1232REF |
| 厂商： | Texas Instruments |
| 文件页数： | 23/39页 |
| 文件大小： | 0K |
| 描述： | EVALUATION MODULE FOR ADS1232 |
| 产品培训模块： | Data Converter Basics |
| 视频文件： | Nuts and Bolts of the Delta-Sigma Converter |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 采样率（每秒）： | 80 |
| 数据接口： | 串行 |
| 输入范围： | ±2.5 V |
| 在以下条件下的电源（标准）： | 7.1mW @ 5V |
| 工作温度： | -40°C ~ 105°C |
| 已用 IC / 零件： | ADS1232 |
| 已供物品： | 板 |
| 产品目录页面： | 889 (CN2011-ZH PDF) |
| 相关产品： | ADS1232IPWRG4-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP 296-25894-2-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP ADS1232IPWG4-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP 296-18589-5-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP |
| 其它名称： | 296-20803 |
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www.ti.com
ELECTRICAL CHARACTERISTICS
SBAS350F – JUNE 2005 – REVISED FEBRUARY 2008
All specifications at TA = –40°C to +105°C, AVDD = DVDD = VREFP = +5V, and VREFN = AGND, unless otherwise noted.
ADS1232, ADS1234
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Analog Inputs
Full-Scale Input Voltage
±0.5VREF/Gain
V
(AINP – AINN)
AINxP or AINxN with respect to GND,
AGND – 0.1
AVDD + 0.1
V
Gain = 1, 2
Common-Mode Input Range
Gain = 64, 128
AGND + 1.5V
AVDD – 1.5V
V
Gain = 1
±3
nA
Differential Input Current
Gain = 2
±6
nA
Gain = 64, 128
±3.5
nA
System Performance
Resolution
No Missing Codes
24
Bits
Internal Oscillator, SPEED = High
78
80
82.4
SPS
Internal Oscillator, SPEED = Low
9.75
10
10.3
SPS
Data Rate
External Oscillator, SPEED = High
fCLK/61,440
SPS
External Oscillator, SPEED = Low
fCLK/491,520
SPS
Digital Filter Settling Time
Full Settling
4
Conversions
Differential Input, End-Point Fit
±0.0002
±0.001
% of FSR(1)
Gain = 1, 2
Integral Nonlinearity (INL)
Differential Input, End-Point Fit
±0.0004
% of FSR
Gain = 64, 128
Gain = 1
±0.2
±5
ppm of FS
Input Offset Error(2)
Gain = 128
±0.02
±1
ppm of FS
Gain = 1
±0.3
V/
°C
Input Offset Drift
Gain = 128
±10
nV/
°C
Gain = 1
±0.001
±0.02
%
Gain Error(3)
Gain = 128
±0.01
±0.1
%
Gain = 1
±0.2
ppm/
°C
Gain Drift
Gain = 128
±2.5
ppm/
°C
Internal Oscillator, fDATA = 10SPS
100
110
dB
fIN = 50Hz or 60Hz, ±1Hz
Normal-Mode Rejection(4)
External Oscillator, fDATA = 10SPS
120
130
dB
fIN = 50Hz or 60Hz, ±1Hz
at DC, Gain = 1,
ΔV = 1V
95
110
dB
Common-Mode Rejection
at DC, Gain = 128,
ΔV = 0.1V
95
110
dB
Input-Referred Noise
See Noise Performance Tables
at DC, Gain = 1,
ΔV = 1V
100
120
dB
Power-Supply Rejection
at DC, Gain = 128,
ΔV = 0.1V
100
120
dB
Voltage Reference Input
Voltage Reference Input (VREF)
VREF = VREFP – VREFN
1.5
AVDD
AVDD + 0.1V
V
Negative Reference Input (VREFN)
AGND – 0.1
VREFP – 1.5
V
Positive Reference Input (VREFP)
VREFN + 1.5
AVDD + 0.1
V
Voltage Reference
10
nA
Input Current
(1)
FSR = full-scale range = VREF/Gain.
(2)
Offset calibration can minimize these errors to the level of noise at any temperature.
(3)
Gain errors are calibrated at the factory (AVDD = +5V, all gains, TA = +25°C).
(4)
Specification is assured by the combination of design and final production test.
Copyright 2005–2008, Texas Instruments Incorporated
3
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