Overview
The ADS1292RIRSMR, produced by Texas Instruments, is a multichannel, simultaneous sampling, 24-bit delta-sigma (ΔΣ) analog-to-digital converter (ADC) designed for high-precision medical and fitness applications. This device integrates a programmable gain amplifier (PGA), an internal reference, and an onboard oscillator, making it ideal for portable, low-power electrocardiogram (ECG) and respiration measurement systems. The ADS1292RIRSMR is part of the ADS1292 series, which includes advanced features such as lead-off detection, test signals, and a built-in right leg drive amplifier. The device is particularly notable for its integrated respiration impedance measurement function, enhancing its utility in monitoring both ECG and respiration patterns.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 24 |
| Number of Channels | 2 |
| Data Rate | 125 SPS to 8 kSPS |
| Input Bias Current | 200 pA |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Digital Supply Voltage | 1.7 V to 3.6 V |
| Common-Mode Rejection Ratio (CMRR) | 120 dB |
| Operating Temperature Range | –40°C to +85°C |
| Package | 32-pin VQFN (4x4 mm) |
| Power Consumption | 740 µW |
Key Features
- High-resolution 24-bit delta-sigma ADCs with simultaneous sampling capability.
- Integrated programmable gain amplifier (PGA) with gains of 1, 2, 3, 4, 6, 8, or 12.
- Built-in right leg drive amplifier, lead-off detection, and test signals.
- Integrated respiration impedance measurement function (ADS1292R).
- Built-in oscillator and internal reference.
- Flexible power-down and standby mode.
- SPI™-compatible serial interface.
- Low power consumption: 335 µW/channel.
- High CMRR of 120 dB and low input-referred noise of 8 µVPP.
Applications
- Medical instrumentation, including patient monitoring (Holter, event, stress, and vital signs), ECG, AED, and telemedicine.
- Personal care and fitness monitors for heart rate, respiration, and ECG.
- High-precision, simultaneous, multichannel data acquisition systems.
Q & A
- What is the primary function of the ADS1292RIRSMR?
The ADS1292RIRSMR is a multichannel, simultaneous sampling, 24-bit delta-sigma ADC designed for high-precision medical and fitness applications, particularly for ECG and respiration measurement. - What are the key features of the ADS1292RIRSMR?
Key features include integrated PGA, built-in oscillator and reference, lead-off detection, test signals, and integrated respiration impedance measurement. - What is the data rate range of the ADS1292RIRSMR?
The data rate range is from 125 SPS to 8 kSPS. - What are the supply voltage ranges for the ADS1292RIRSMR?
The analog supply voltage range is 2.7 V to 5.25 V, and the digital supply voltage range is 1.7 V to 3.6 V. - What is the CMRR of the ADS1292RIRSMR?
The CMRR is 120 dB. - What is the operating temperature range of the ADS1292RIRSMR?
The operating temperature range is from –40°C to +85°C. - What type of package is the ADS1292RIRSMR available in?
The device is available in a 32-pin VQFN (4x4 mm) package. - What is the power consumption of the ADS1292RIRSMR?
The power consumption is approximately 740 µW. - Can the ADS1292RIRSMR be used for respiration measurement?
Yes, the ADS1292RIRSMR includes a fully integrated respiration impedance measurement function. - What are some common applications of the ADS1292RIRSMR?
Common applications include medical instrumentation, personal care and fitness monitors, and high-precision data acquisition systems.
