參數(shù)資料
型號(hào)： ADS1191IPBSR
廠商： Texas Instruments
文件頁數(shù)： 65/67頁
文件大小： 0K
描述： IC AFE 16BIT 8KSPS 1CH 32TQFP
標(biāo)準(zhǔn)包裝： 1,000
位數(shù)： 16
通道數(shù)： 1
電壓 - 電源，模擬： 2.7 V ~ 5.25 V
電壓 - 電源，數(shù)字： 1.7 V ~ 3.6 V
封裝/外殼： 32-TQFP
供應(yīng)商設(shè)備封裝： 32-TQFP（5x5）
包裝： 帶卷 (TR)
SBAS566A – DECEMBER 2011 – REVISED SEPTEMBER 2012
PARAMETER MEASUREMENT INFORMATION
NOISE MEASUREMENTS
The ADS1191/2 noise performance can be optimized by adjusting the data rate and PGA setting. As the
averaging is increased by reducing the data rate, the noise drops correspondingly. Increasing the PGA value
reduces the input-referred noise, which is particularly useful when measuring low-level biopotential signals.
Table 1 and Table 2 summarize the noise performance of the ADS1191/2. The data are representative of typical
noise performance at TA = +25°C. The data shown are the result of averaging the readings from multiple devices
and are measured with the inputs shorted together.
Table 1 and Table 2 show measurements taken with an internal reference. The data are also representative of
the ADS1191/2 noise performance when using a low-noise external reference such as the REF5025.
Table 1. Input-Referred Noise (
μVPP) 3-V Analog Supply and 2.42-V Reference
(1)
PGA GAIN
DR BITS OF
OUTPUT
x1
x2
x3
x4
x6
x8
x12
CONFIG1
DATA RATE
–3-dB BANDWIDTH
REGISTER
(SPS)
(Hz)
μVPP
000
125
32.75
147.1
73.9
49.2
36.9
24.6
18.5
12.3
001
250
65.5
147.7
73.9
49.2
36.9
24.6
18.5
12.3
010
500
131
147.7
73.9
49.2
36.9
24.6
18.5
12.3
011
1000
262
147.7
73.9
49.2
36.9
24.6
18.5
12.3
100
2000
524
221.5
110.8
73.8
55.4
36.9
27.7
18.5
101
4000
1048
810.0
405.0
270.0
202.5
135.0
101.3
67.5
110
8000
2096
3900.0
1950.0
1300.0
975.0
650.0
487.5
325.0
(1)
At least 1000 consecutive readings were used to calculate the peak-to-peak noise values in this table.
Table 2. Input-Referred Noise (
μVPP) 5-V Analog Supply and 4.033-V Reference
(1)
PGA GAIN
DR BITS OF
OUTPUT
x1
x2
x3
x4
x6
x8
x12
CONFIG1
DATA RATE
–3-dB BANDWIDTH
REGISTER
(SPS)
(Hz)
μVPP
000
125
32.75
246.1
123.1
82.0
61.5
41.0
30.8
20.5
001
250
65.5
246.1
123.1
82.0
61.5
41.0
30.8
20.5
010
500
131
246.1
123.1
82.0
61.5
41.0
30.8
20.5
011
1000
262
246.1
123.1
82.0
61.5
41.0
30.8
20.5
100
2000
524
369.2
184.6
123.1
92.3
61.5
46.2
30.8
101
4000
1048
1230.0
615.0
410.0
307.5
205.0
153.8
102.5
110
8000
2096
6800.0
3400.0
2266.7
1700.0
1133.3
850.0
566.7
(1)
At least 1000 consecutive readings were used to calculate the peak-to-peak noise values in this table.
Copyright 2011–2012, Texas Instruments Incorporated
7
Product Folder Links: ADS1191 ADS1192
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ADS1192 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power, 2-Channel, 16-Bit Analog Front-End for Biopotential Measurements
ADS1192ECG-FE 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS1192 Demo Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
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