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参数资料
| 型号： | ADS1298RIZXGT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA64 |
| 封装： | 8 X 8 MM, LEAD FREE, PLASTIC, NFBGA-64 |
| 文件页数： | 87/87页 |
| 文件大小： | 1430K |
| 代理商： | ADS1298RIZXGT |
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SBAS459H
– JANUARY 2010 – REVISED MAY 2011
NOISE MEASUREMENTS
NOTE
The ADS1294R/6R/8R channel performance differs from the ADS1294/6/8 in regards to
respiration circuitry found on channel one. Unless otherwise noted, ADS129x refers to all
specifications and functional descriptions of the ADS1294, ADS1296, ADS1298,
ADS1294R, ADS1296R, and ADS1298R.
The ADS129x 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 ADS129x in the High-Resolution (HR) mode and Low-Power
(LP) mode, respectively, with a 3V analog power supply. Table 3 and Table 4 summarize the noise performance
of the ADS129x in the HR mode and LP mode, respectively, with a 5V analog power supply. 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. A minimum of 1000
consecutive readings are used to calculate the RMS and peak-to-peak noise for each reading. For the two
highest data rates, the noise is limited by quantization noise of the ADC and does not have a gaussian
distribution. Thus, the ratio between rms noise and peak-to-peak noise is approximately 10. For the lower data
rates, the ratio is approximately 6.6.
Table 1 to Table 4 show measurements taken with an internal reference. The data are also representative of the
ADS129x noise performance when using a low-noise external reference such as the REF5025.
Table 1. Input-Referred Noise (
μVRMS/μVPP) in High-Resolution Mode
3V Analog Supply and 2.4V Reference(1)
DR BITS OF
OUTPUT
–3dB
CONFIG1
DATA RATE
BANDWIDTH
PGA
REGISTER
(SPS)
(Hz)
GAIN = 1
GAIN = 2
GAIN = 3
GAIN = 4
GAIN = 6
GAIN = 8
GAIN = 12
000
32000
8398
335/3553
168/1701
112/1100
85/823
58/529
42.5/378
28.6/248
001
16000
4193
56/613
28/295
18.8/188
14.3/143
9.7/94
7.4/69
5.2/44.3
010
8000
2096
12.4/111
6.5/54
4.5/37.9
3.5/29.7
2.6/21.7
2.2/17.8
1.8/13.8
011
4000
1048
6.1/44.8
3.2/23.3
2.4/17.1
1.9/14.0
1.5/11.1
1.3/9.7
1.2/8.5
100
2000
524
4.1/27.8
2.2/15.4
1.6/11.0
1.3/9.1
1.1/7.3
1.0/6.5
0.9/6.0
101
1000
262
2.9/19.0
1.6/10.1
1.2/7.5
1.0/6.2
0.8/5.0
0.7/4.6
0.6/4.1
110
500
131
2.1/12.5
1.1/6.8
0.9/5.1
0.7/4.3
0.6/3.5
0.5/3.1
0.5/2.9
(1)
At least 1000 consecutive readings were used to calculate the RMS and peak-to-peak noise values in this table.
Table 2. Input-Referred Noise (
μVRMS/μVPP) in Low-Power Mode
3V Analog Supply and 2.4V Reference(1)
DR BITS OF
OUTPUT
–3dB
CONFIG1
DATA RATE
BANDWIDTH
PGA
REGISTER
(SPS)
(Hz)
GAIN = 1
GAIN = 2
GAIN = 3
GAIN = 4
GAIN = 6
GAIN = 8
GAIN = 12
000
16000
4193
333/3481
166/1836
111/1168
84/834
56/576
42/450
28/284
001
8000
2096
56/554
28/272
19/177
14.3/133
9.7/85
7.4/64
5.0/42.4
010
4000
1048
12.5/99
6.5/51
4.5/35.0
3.4/25.9
2.4/18.8
2.0/14.5
1.5/11.3
011
2000
524
6.1/41.8
3.2/22.2
2.3/15.9
1.8/12.1
1.4/9.3
1.2/7.8
1.0/6.7
100
1000
262
4.1/26.3
2.2/14.6
1.6/9.9
1.3/8.1
1.0/6.2
0.8/5.4
0.7/4.7
101
500
131
3.0/17.9
1.6/9.8
1.1/6.8
0.9/5.7
0.7/4.2
0.6/3.6
0.5/3.4
110
250
65
2.1/11.9
1.1/6.3
0.8/4.6
0.7/4.0
0.5/3.0
0.5/2.6
0.4/2.4
(1)
At least 1000 consecutive readings were used to calculate the RMS and peak-to-peak noise values in this table.
Copyright
2010–2011, Texas Instruments Incorporated
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS1299 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Low-Noise, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements |
| ADS1299_1211 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Low-Noise, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements |
| ADS1299-4PAG | 功能描述:IC AFE 4-CH 24BIT 64TQFP 制造商:texas instruments 系列:- 包装:托盘 零件状态:在售 位数:24 通道数:4 电压 - 电源，模拟:5V 电压 - 电源，数字:1.8 V ~ 3.6 V 封装/外壳:64-TQFP 供应商器件封装:64-TQFP（10x10） 标准包装:160 |
| ADS1299-4PAGR | 功能描述:IC AFE 4-CH 24BIT 64TQFP 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:在售 位数:24 通道数:4 功率（W）:24mW 电压 - 电源，模拟:4.75 V ~ 5.25 V 电压 - 电源，数字:1.8 V ~ 3.6 V 封装/外壳:64-TQFP 供应商器件封装:64-TQFP（10x10） 标准包装:1 |
| ADS1299-6PAG | 功能描述:IC AFE 6-CH 24BIT 64TQFP 制造商:texas instruments 系列:- 包装:托盘 零件状态:在售 位数:24 通道数:6 功率（W）:33mW 电压 - 电源，模拟:5V 电压 - 电源，数字:1.8 V ~ 3.6 V 封装/外壳:64-TQFP 供应商器件封装:64-TQFP（10x10） 标准包装:160 |
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