Overview
The ADS1298IPAG is a highly integrated, 8-channel, 24-bit analog-to-digital converter (ADC) with built-in programmable gain amplifiers (PGAs) and an integrated electrocardiogram (ECG) front end. This device is part of the ADS129x family from Texas Instruments, designed to meet the stringent requirements of medical ECG and electroencephalogram (EEG) applications. With its high resolution, low noise, and low power consumption, the ADS1298IPAG is ideal for developing scalable and cost-effective medical instrumentation systems.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TQFP-64 |
| Pins | 64 |
| Operating Temperature Range (°C) | -40 to 85 |
| Resolution | 24-bit |
| Channels | 8 |
| Data Rate | 250 SPS to 32 kSPS |
| Input-Referred Noise | 4 μV (150 Hz BW, G = 6) |
| Input Bias Current | 200 pA |
| 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 |
| Interface | SPI™-Compatible Serial Interface |
Key Features
- Eight low-noise PGAs and eight high-resolution ADCs
- Low power consumption: 0.75 mW/channel
- Built-in right leg drive amplifier, lead-off detection, Wilson center terminal, pace detection, and test signals
- Integrated respiration impedance measurement (ADS1298R versions)
- Digital pace detection capability
- Built-in oscillator and reference
- Supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 standards
- Flexible input multiplexer per channel for test, temperature, and lead-off detection
- Unipolar or bipolar supplies
Applications
The ADS1298IPAG is primarily designed for medical applications, including:
- Electrocardiogram (ECG) systems
- Electroencephalogram (EEG) systems
- Respiration impedance measurement
- Pace detection and other cardiac monitoring systems
- Scalable medical instrumentation systems requiring high channel counts
Q & A
- What is the package type of the ADS1298IPAG?
The ADS1298IPAG comes in a TQFP-64 package with 64 pins.
- What is the operating temperature range of the ADS1298IPAG?
The operating temperature range is -40°C to 85°C.
- What is the resolution and number of channels of the ADS1298IPAG?
The ADS1298IPAG has a 24-bit resolution and 8 channels.
- What are the data rates supported by the ADS1298IPAG?
The data rates range from 250 SPS to 32 kSPS.
- What is the input-referred noise of the ADS1298IPAG?
The input-referred noise is 4 μV (150 Hz BW, G = 6).
- Does the ADS1298IPAG support respiration impedance measurement?
Yes, the ADS1298R versions include a fully integrated respiration impedance measurement function.
- What standards does the ADS1298IPAG comply with?
The ADS1298IPAG supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 standards.
- What is the power consumption per channel of the ADS1298IPAG?
The power consumption is 0.75 mW/channel.
- Does the ADS1298IPAG have built-in test signals and lead-off detection?
Yes, it includes built-in right leg drive amplifier, lead-off detection, Wilson center terminal, pace detection, and test signals.
- Can multiple ADS1298IPAG devices be cascaded?
Yes, multiple devices can be cascaded in high channel count systems in a daisy-chain configuration.
