Overview
The ADS1298CZXGR, 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 suitable for medical electrocardiogram (ECG) and electroencephalogram (EEG) applications. The ADS1298CZXGR enables the development of scalable medical instrumentation systems with reduced size, power, and overall cost.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 64-ball NFBGA (ZXG) |
| Operating Temperature Range | 0°C to 70°C (commercial grade), –40°C to +85°C (industrial grade) |
| Number of Channels | 8 |
| Resolution | 24-bit |
| Data Rate | 250 SPS to 32 kSPS |
| Input-Referred Noise | 4 μVPP (150 Hz BW, G = 6) |
| Input Bias Current | 200 pA |
| CMRR | –115 dB |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.25 V |
| Digital Supply Voltage (DVDD) | 1.65 V to 3.6 V |
| Power Consumption (per channel) | 0.75 mW |
Key Features
- Eight Low-Noise PGAs and Eight High-Resolution ADCs
- Low Power: 0.75 mW/channel
- Built-In Right Leg Drive Amplifier, Lead-Off Detection, Wilson Center Terminal, Pace Detection, Test Signals
- Integrated Respiration Impedance Measurement (ADS1298R version)
- Digital Pace Detection Capability
- Built-In Oscillator and Reference
- SPI™-Compatible Serial Interface
- Flexible Power-Down, Standby Modes
- Supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 Standards
Applications
The ADS1298CZXGR is primarily used in medical instrumentation systems, particularly for electrocardiogram (ECG) and electroencephalogram (EEG) applications. It is also suitable for other biopotential measurements and can be integrated into portable ECG equipment, patient monitoring systems, and other medical devices requiring high-resolution and low-power analog front-ends.
Q & A
- What is the resolution of the ADS1298CZXGR?
The ADS1298CZXGR has a 24-bit resolution.
- What is the data rate range of the ADS1298CZXGR?
The data rate range is from 250 SPS to 32 kSPS.
- What is the input-referred noise of the ADS1298CZXGR?
The input-referred noise is 4 μVPP (150 Hz BW, G = 6).
- What are the programmable gain options for the ADS1298CZXGR?
The programmable gain options are 1, 2, 3, 4, 6, 8, or 12.
- Does the ADS1298CZXGR support respiration impedance measurement?
The ADS1298R version supports integrated respiration impedance measurement, but this feature is not specified for the ADS1298CZXGR.
- What are the operating temperature ranges for the ADS1298CZXGR?
The operating temperature range is 0°C to 70°C for commercial grade and –40°C to +85°C for industrial grade.
- What is the power consumption per channel of the ADS1298CZXGR?
The power consumption per channel is 0.75 mW.
- Does the ADS1298CZXGR have built-in lead-off detection and pace detection capabilities?
- What type of serial interface does the ADS1298CZXGR use?
The ADS1298CZXGR uses an SPI™-Compatible Serial Interface.
- What are the supply voltage ranges for the ADS1298CZXGR?
The analog supply voltage (AVDD) range is 2.7 V to 5.25 V, and the digital supply voltage (DVDD) range is 1.65 V to 3.6 V.
