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ADS1192

更新时间： 2024-11-05 12:21:31
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德州仪器 - TI /
页数 文件大小 规格书
61页 1520K
描述
Low-Power, 2-Channel, 16-Bit Analog Front-End for Biopotential Measurements

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ADS1192 数据手册

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ADS1191  
ADS1192  
www.ti.com  
SBAS566 –DECEMBER 2011  
Low-Power, 2-Channel, 16-Bit Analog Front-End for Biopotential Measurements  
Check for Samples: ADS1191, ADS1192  
The ADS1191/2 incorporate all of the features that  
1
FEATURES  
are commonly required in portable, low-power  
medical electrocardiogram (ECG), sports, and fitness  
applications.  
23  
•
Two Low-Noise PGAs and  
Two High-Resolution ADCs (ADS1192)  
•
•
Low Power: 335 μW/channel  
With its high levels of integration and exceptional  
performance, the ADS1191/2 family enables the  
creation of scalable medical instrumentation systems  
at significantly reduced size, power, and overall cost.  
Input-Referred Noise: 24 μVPP  
(150-Hz BW, G = 6)  
•
•
•
•
•
Input Bias Current: 1 nA  
Data Rate: 125 SPS to 8 kSPS  
CMRR: –95 dB  
The ADS1191/2 have a flexible input multiplexer per  
channel that can be independently connected to the  
internally-generated signals for test, temperature, and  
lead-off detection. Additionally, any configuration of  
input channels can be selected for derivation of the  
right leg drive (RLD) output signal. The ADS1191/2  
operate at data rates up to 8 kSPS. Lead-off  
detection can be implemented internal to the device,  
using the device internal excitation current  
sink/source.  
Programmable Gain: 1, 2, 3, 4, 6, 8, or 12  
Supplies: Unipolar or Bipolar  
–
–
Analog: 2.7 V to 5.25 V  
Digital: 1.7 V to 3.6 V  
•
Built-In Right Leg Drive Amplifier, Lead-Off  
Detection, Test Signals  
•
•
•
•
Built-In Oscillator and Reference  
The devices are packaged in a 5-mm × 5-mm, 32-pin  
thin quad flat pack (TQFP). Operating temperature is  
specified from –40°C to +85°C.  
Flexible Power-Down, Standby Mode  
SPI™-Compatible Serial Interface  
REF  
Operating Temperature Range: –40°C to +85°C  
Test Signals and  
Monitors  
Reference  
APPLICATIONS  
SPI  
•
Medical Instrumentation (ECG) including:  
–
Patient monitoring; Holter, event, stress,  
and vital signs including ECG, AED,  
telemedicine  
ADC1  
ADC2  
A1  
A2  
Oscillator  
MUX  
Control  
–
Sports and fitness (heart rate, respiration,  
and ECG)  
To Channel  
DESCRIPTION  
The ADS1191/2 are  
a family of multichannel,  
simultaneous sampling, 16-bit, delta-sigma (ΔΣ)  
analog-to-digital converters (ADCs) with a built-in  
programmable gain amplifier (PGA), internal  
reference, and an onboard oscillator.  
RLD  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
SPI is a trademark of Motorola.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011, Texas Instruments Incorporated  
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