Overview
The ADS1292RIPBSR, produced by Texas Instruments, is a 2-channel, 24-bit analog-to-digital converter (ADC) designed for low-power, portable medical electrocardiogram (ECG), sports, and fitness applications. This device integrates a programmable gain amplifier (PGA), internal reference, and an onboard oscillator, making it highly suitable for scalable medical instrumentation systems. The ADS1292R version specifically includes a fully integrated respiration impedance measurement function, enhancing its utility in monitoring both ECG and respiration.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 | Bits |
| Data Rate | 125 SPS to 8 kSPS | SPS |
| Input-referred Noise | 8 µV (PP, 150-Hz BW, G = 6) | µV |
| 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 | TQFP (32-pin), VQFN (32-pin) | - |
| Package Size | TQFP: 5-mm × 5-mm, VQFN: 4-mm × 4-mm | mm |
Key Features
- Two low-noise PGAs and two high-resolution ADCs
- Low power consumption: 335 µW/channel
- 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 mode
- SPI™-compatible serial interface
- Flexible input multiplexer per channel for test, temperature, and lead-off detection
Applications
- Medical instrumentation (ECG): patient monitoring (Holter, event, stress), vital signs including ECG, AED, and telemedicine
- Personal care and fitness monitors: heart rate, respiration, and ECG
- High-precision, simultaneous, multichannel data acquisition
Q & A
- What is the resolution of the ADS1292RIPBSR ADC?
The resolution of the ADS1292RIPBSR is 24 bits.
- What is the data rate range of the ADS1292RIPBSR?
The data rate range is from 125 SPS to 8 kSPS.
- What is the input-referred noise of the ADS1292RIPBSR?
The input-referred noise is 8 µV (PP, 150-Hz BW, G = 6).
- What is the input bias current of the ADS1292RIPBSR?
The input bias current is 200 pA.
- What is the CMRR of the ADS1292RIPBSR?
The CMRR is 120 dB.
- What are the programmable gain options for the ADS1292RIPBSR?
The programmable gain options are 1, 2, 3, 4, 6, 8, or 12.
- What are the supply voltage ranges for the ADS1292RIPBSR?
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 ADS1292RIPBSR?
The operating temperature range is –40°C to +85°C.
- What package types are available for the ADS1292RIPBSR?
The device is available in TQFP (32-pin) and VQFN (32-pin) packages.
- Does the ADS1292RIPBSR support respiration measurement?
Yes, the ADS1292RIPBSR includes a fully integrated respiration impedance measurement function.
