Overview
The ADS1292IRSMR, produced by Texas Instruments, is a high-performance, multichannel analog-to-digital converter (ADC) designed for medical and fitness applications. This device is part of the ADS1291, ADS1292, and ADS1292R family, which are known for their high levels of integration and exceptional performance. The ADS1292IRSMR is particularly suited for portable, low-power electrocardiogram (ECG) and respiration measurement systems, enabling the creation of scalable medical instrumentation at reduced size, power, and overall cost.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 | Bits |
| Data Rate | 125 SPS to 8 kSPS | SPS |
| Input Bias Current | 200 pA | pA |
| CMRR | 120 dB | dB |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 | |
| Analog Supply Voltage | 2.7 V to 5.25 V | V |
| Digital Supply Voltage | 1.7 V to 3.6 V | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | 32-pin TQFP or VQFN | |
| Package Size | TQFP: 5-mm × 5-mm, VQFN: 4-mm × 4-mm | mm |
Key Features
- High-resolution, 24-bit delta-sigma (ΔΣ) analog-to-digital converters (ADCs)
- Low-noise programmable gain amplifiers (PGAs)
- Low power consumption: 335 µW/channel
- Input-referred noise: 8 µV PP (150-Hz BW, G = 6)
- Built-in right leg drive amplifier, lead-off detection, and test signals
- Integrated respiration impedance measurement (ADS1292R)
- Built-in oscillator and reference
- Flexible power-down and standby modes
- SPI™-compatible serial interface
- General-purpose I/O pins (GPIOs)
Applications
- Medical instrumentation (ECG): patient monitoring (Holter, event, stress, vital signs), automated external defibrillators (AED), and telemedicine
- Personal care and fitness monitors: heart rate, respiration, and ECG monitoring
- High-precision, simultaneous, multichannel data acquisition
Q & A
- What is the resolution of the ADS1292IRSMR ADC?
The resolution of the ADS1292IRSMR ADC is 24 bits.
- What is the data rate range of the ADS1292IRSMR?
The data rate range is from 125 SPS to 8 kSPS.
- What is the input bias current of the ADS1292IRSMR?
The input bias current is 200 pA.
- What is the common-mode rejection ratio (CMRR) of the ADS1292IRSMR?
The CMRR is 120 dB.
- What are the programmable gain settings of the ADS1292IRSMR?
The programmable gain settings are 1, 2, 3, 4, 6, 8, or 12.
- What are the supply voltage ranges for the ADS1292IRSMR?
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 operating temperature range of the ADS1292IRSMR?
The operating temperature range is from –40°C to +85°C.
- What types of packages are available for the ADS1292IRSMR?
The device is available in 32-pin TQFP and VQFN packages.
- Does the ADS1292IRSMR support respiration measurement?
Yes, the ADS1292R version includes a fully integrated respiration impedance measurement function.
- What are some common applications of the ADS1292IRSMR?
Common applications include medical instrumentation (ECG), personal care and fitness monitors, and high-precision multichannel data acquisition.
