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ADS1298 - 产品图解：
ADS1298-具有集成 ECG 前端的 8 通道 24 位模数转换器
ADS1298-医疗电子模拟前端-模拟前端(AFE)-数据转换器
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TI产品 - ADS1298介绍

ADS1298 - 具有集成 ECG 前端的 8 通道 24 位模数转换器

ADS1298是TI德州仪器公司的一款医疗电子模拟前端产品，ADS1298是具有集成 ECG 前端的 8 通道 24 位模数转换器，本站介绍了ADS1298的封装应用图解、特点和优点、功能等，并给出了与ADS1298相关的TI元器件型号供参考。

ADS1298 - 具有集成 ECG 前端的 8 通道 24 位模数转换器 - 医疗电子模拟前端 - 模拟前端(AFE) - 德州仪器

产品特性
  • 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
2 Applications
  • Medical Instrumentation (ECG, EMG, and EEG): Patient Monitoring; Holter, Event, Stress, and Vital Signs Including ECG, AED, Telemedicine Bispectral Index (BIS), Evoked Audio Potential (EAP), Sleep Study Monitor
Simplified Schematic
产品说明

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.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
ADS129x, ADS129xRNFBGA (64)8.00 mm × 8.00 mm
TQFP (64)10.00 mm × 10.00 mm
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