參數(shù)資料
型號: ADS1232IPWG4
廠商: Texas Instruments
文件頁數(shù): 35/39頁
文件大?。?/td> 0K
描述: IC ADC 24-BIT 10/80SPS 24-TSSOP
產(chǎn)品培訓(xùn)模塊: Data Converter Basics
視頻文件: Nuts and Bolts of the Delta-Sigma Converter
標(biāo)準(zhǔn)包裝: 60
位數(shù): 24
采樣率(每秒): 10,80
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 13.1mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 管件
輸入數(shù)目和類型: 4 個單端,單極;2 個差分,雙極
配用: 296-20803-ND - EVALUATION MODULE FOR ADS1232
www.ti.com
NOISE PERFORMANCE
SBAS350F – JUNE 2005 – REVISED FEBRUARY 2008
The ADS1232/4 offer outstanding noise performance that can be optimized for a given full-scale range using the
on-chip programmable gain amplifier. Table 1 through Table 4 summarize the typical noise performance with
inputs shorted externally for different gains, data rates, and voltage reference values.
The RMS and Peak-to-Peak noise are referred to the input. The Effective Number of Bits (ENOB) is defined as:
ENOB = ln (FSR/RMS noise)/ln(2)
The Noise-Free Bits are defined as:
Noise-Free Bits = ln (FSR/Peak-to-Peak Noise)/ln(2)
Where FSR (Full-Scale Range) = VREF/Gain
Table 1. AVDD = 5V, VREF = 5V, Data Rate = 10SPS
GAIN
RMS NOISE
PEAK-TO-PEAK NOISE(1)
ENOB (RMS)
NOISE-FREE BITS
1
420nV
1.79V
23.5
21.4
2
270nV
900nV
23.1
21.4
64
19nV
125nV
22.0
19.2
128
17nV
110nV
21.1
18.4
(1)
Peak-to-peak noise data are based on direct measurement.
Table 2. AVDD = 5V, VREF = 5V, Data Rate = 80SPS
GAIN
RMS NOISE
PEAK-TO-PEAK NOISE(1)
ENOB (RMS)
NOISE-FREE BITS
1
1.36V
8.3V
21.8
19.2
2
850nV
5.5V
21.5
18.8
64
48nV
307nV
20.6
18
128
44nV
247nV
19.7
17.2
(1)
Peak-to-peak noise data are based on direct measurement.
Table 3. AVDD = 3V, VREF = 3V, Data Rate = 10SPS
GAIN
RMS NOISE
PEAK-TO-PEAK NOISE(1)
ENOB (RMS)
NOISE-FREE BITS
1
450nV
2.8V
22.6
20
2
325nV
1.8V
22.1
19.7
64
20nV
130nV
21.2
18.5
128
18nV
115nV
20.3
17.6
(1)
Peak-to-peak noise data are based on direct measurement.
Table 4. AVDD = 3V, VREF = 3V, Data Rate = 80SPS
GAIN
RMS NOISE
PEAK-TO-PEAK NOISE(1)
ENOB (RMS)
NOISE-FREE BITS
1
2.2V
12V
20.4
17.9
2
1.2V
6.8V
20.2
17.8
64
54nV
340nV
19.7
17.1
128
48nV
254nV
18.9
16.5
(1)
Peak-to-peak noise data are based on direct measurement of 1024 samples.
Copyright 2005–2008, Texas Instruments Incorporated
5
Product Folder Link(s): ADS1232 ADS1234
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