ADS1294R
- Eight Low-Noise PGAs and Eight High-Resolution ADCs (ADS1298, ADS1298R)
- Low Power: 0.75 mW/channel
- Input-Referred Noise: 4 μVPP (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
- Unipolar or Bipolar Supplies:
- AVDD = 2.7 V to 5.25 V
- DVDD = 1.65 V to 3.6 V
- Built-In Right Leg Drive Amplifier, Lead-Off Detection, Wilson Center Terminal, Pace Detection, Test Signals
- Integrated Respiration Impedance Measurement
- Digital Pace Detection Capability
- Built-In Oscillator and Reference
- SPI™-Compatible Serial Interface
The ADS1294, ADS1296, ADS1298 (ADS129x) and ADS1294R, ADS1296R ADS1298R (ADS129xR) are a family of multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with built-in programmable gain amplifiers (PGAs), internal reference, and an onboard oscillator. The ADS129x and ADS129xR incorporate all of the features that are commonly required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications. With high levels of integration and exceptional performance, the ADS129x and ADS129xR enables the development of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.
The ADS129x and ADS129xR have a flexible input multiplexer (mux) per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal. The ADS129x and ADS129xR operate at data rates as high as 32 kSPS, thereby allowing the implementation of software pace detection. Lead-off detection can be implemented internal to the device, either with a pullup or pulldown resistor, or an excitation current sink or source. Three integrated amplifiers generate the Wilson central terminal (WCT) and the Goldberger central terminals (GCT) required for a standard 12-lead ECG. The ADS129xR versions include a fully integrated, respiration impedance measurement function. Multiple ADS129x and ADS129xR devices can be cascaded in high channel count systems in a daisy-chain configuration.
Package options include a tiny 8-mm × 8-mm, 64-ball BGA, and a TQFP-64. The ADS129x BGA version is specified over the commercial temperature range of 0°C to 70°C. The ADS129xR BGA and ADS129x TQFP versions are specified over the industrial temperature range of –40°C to +85°C.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 | |
|---|---|---|---|---|---|---|
| * | 데이터 시트 | ADS129x Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements datasheet (Rev. K) | PDF | HTML | 2015. 8. 7 | ||
| 애플리케이션 노트 | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023. 3. 29 | |||
| e북 | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020. 6. 19 | ||||
| e북 | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015. 3. 19 | ||||
| 사용 설명서 | TIPD111 Verified Design Reference Guide | 2013. 6. 18 | ||||
| 애플리케이션 노트 | Improving Common-Mode Rejection Using the Right-Leg Drive Amplifier | 2011. 7. 6 | ||||
| 애플리케이션 노트 | Thermal Noise Analysis in ECG Applications | 2011. 5. 3 | ||||
| 애플리케이션 노트 | Respiration Rate Measurement Using Impedance Pneumography | 2011. 3. 1 | ||||
| 애플리케이션 노트 | Analog Front-End Design for ECG Systems Using Delta-Sigma ADCs (Rev. A) | 2010. 4. 13 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
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이 계산기는 독립 실행형 툴로 유용할 뿐만 아니라 아날로그 엔지니어의 포켓 레퍼런스에 설명된 개념과도 잘 어울립니다.
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| NFBGA (ZXG) | 64 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.