Overview
The ADS1294IPAGR, produced by Texas Instruments, is a member of the ADS129x family of multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs). These devices are designed with built-in programmable gain amplifiers (PGAs), internal reference, and an onboard oscillator, making them highly integrated and performance-driven. They are particularly suited for medical electrocardiogram (ECG) and electroencephalogram (EEG) applications, enabling the development of scalable medical instrumentation systems with reduced size, power, and overall cost.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TQFP-64 |
| Pins | 64 |
| Operating Temperature Range (°C) | -40 to 85 |
| Resolution | 24-bit |
| Channels | 8 |
| Power Consumption per Channel | 0.75 mW |
| Input-Referred Noise | 4 μV PP (150 Hz BW, G = 6) |
| Input Bias Current | 200 pA |
| Data Rate | 250 SPS to 32 kSPS |
| Common-Mode Rejection Ratio (CMRR) | -115 dB |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 |
| Supply Voltage (AVDD) | 2.7 V to 5.25 V |
| Supply Voltage (DVDD) | 1.65 V to 3.6 V |
Key Features
- Eight Low-Noise PGAs and Eight High-Resolution ADCs
- Low Power: 0.75 mW/channel
- Input-Referred Noise: 4 μV PP (150 Hz BW, G = 6)
- Input Bias Current: 200 pA
- Data Rate: 250 SPS to 32 kSPS
- CMRR: –115 dB
- Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
- Supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 Standards
- Built-In Right Leg Drive Amplifier, Lead-Off Detection, Wilson Center Terminal, Pace Detection, Test Signals
- Integrated Respiration Impedance Measurement (ADS129xR versions)
- Digital Pace Detection Capability
- Built-In Oscillator and Reference
- SPI™-Compatible Serial Interface
Applications
The ADS1294IPAGR is primarily used in medical instrumentation systems, particularly for electrocardiogram (ECG) and electroencephalogram (EEG) applications. It is also suitable for other biopotential measurements. The device's high integration, low power consumption, and compliance with various medical standards make it an ideal choice for developing scalable and cost-effective medical devices.
Q & A
- What is the resolution of the ADS1294IPAGR?
The ADS1294IPAGR has a resolution of 24 bits.
- How many channels does the ADS1294IPAGR support?
The ADS1294IPAGR supports 8 channels.
- What is the power consumption per channel of the ADS1294IPAGR?
The power consumption per channel is 0.75 mW.
- What is the input-referred noise of the ADS1294IPAGR?
The input-referred noise is 4 μV PP (150 Hz BW, G = 6).
- What are the programmable gain options for the ADS1294IPAGR?
The programmable gain options are 1, 2, 3, 4, 6, 8, or 12.
- What are the supported supply voltage ranges for the ADS1294IPAGR?
The supply voltage ranges are 2.7 V to 5.25 V for AVDD and 1.65 V to 3.6 V for DVDD.
- Does the ADS1294IPAGR support respiration impedance measurement?
The ADS129xR versions of the device support integrated respiration impedance measurement.
- What standards does the ADS1294IPAGR comply with?
The device complies with AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 Standards.
- What is the operating temperature range of the ADS1294IPAGR?
The operating temperature range is -40°C to 85°C.
- What type of serial interface does the ADS1294IPAGR use?
The device uses an SPI™-Compatible Serial Interface.
