ADS1194

AKTIV

Energieeffizientes 4-kanaliges, Analog-Frontend, 16 Bit, für EKG

Produktdetails

Applications 3-lead ECG, 5-lead ECG, 6-lead ECG, Patient monitoring Number of input channels 4 Resolution (Bits) 16 Interface type SPI Operating temperature range (°C) 0 to 70 Rating Catalog
Applications 3-lead ECG, 5-lead ECG, 6-lead ECG, Patient monitoring Number of input channels 4 Resolution (Bits) 16 Interface type SPI Operating temperature range (°C) 0 to 70 Rating Catalog
TQFP (PAG) 64 144 mm² (12 mm × 12 mm) NFBGA (ZXG) 64 64 mm² (8 mm × 8 mm)
  • Eight Low-Noise PGAs and
    Eight High-Resolution ADCs (ADS1198)
  • Low Power: 0.55mW/channel
  • Input-Referred Noise:
    12µVPP (150Hz BW, G = 6)
  • Input Bias Current: 200pA
  • Data Rate: 125SPS to 8kSPS
  • CMRR: –105dB
  • Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
  • Supports AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 Standards
  • Supplies: Unipolar or Bipolar
    • Analog: 2.7V to 5.25V
    • Digital: 1.65V to 3.6V
  • Built-In Right Leg Drive Amplifier, Lead-Off Detection, WCT, Test Signals
  • Pace Detection Channel Select
  • Built-In Oscillator and Reference
  • Flexible Power-Down, Standby Mode
  • SPI™-Compatible Serial Interface
  • Operating Temperature Range:
    0°C to +70°C
  • Eight Low-Noise PGAs and
    Eight High-Resolution ADCs (ADS1198)
  • Low Power: 0.55mW/channel
  • Input-Referred Noise:
    12µVPP (150Hz BW, G = 6)
  • Input Bias Current: 200pA
  • Data Rate: 125SPS to 8kSPS
  • CMRR: –105dB
  • Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
  • Supports AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 Standards
  • Supplies: Unipolar or Bipolar
    • Analog: 2.7V to 5.25V
    • Digital: 1.65V to 3.6V
  • Built-In Right Leg Drive Amplifier, Lead-Off Detection, WCT, Test Signals
  • Pace Detection Channel Select
  • Built-In Oscillator and Reference
  • Flexible Power-Down, Standby Mode
  • SPI™-Compatible Serial Interface
  • Operating Temperature Range:
    0°C to +70°C

The ADS1194/6/8 are a family of multichannel, simultaneous sampling, 16-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

With its high levels of integration and exceptional performance, the ADS1194/6/8 family enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1194/6/8 have a flexible input multiplexer 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 ADS1194/6/8 operate at data rates as high as 8kSPS, thereby allowing the implementation of software pace detection. Lead-off detection can be implemented internal to the device, either with a pull-up/pull-down resistor or an excitation current sink/source. Three integrated amplifiers generate the Wilson Center Terminal (WCT) and the Goldberger terminals (GCT) required for a standard 12-lead medical electrocardiogram (ECG).

Multiple ADS1194/6/8 devices can be cascaded in high channel count systems in a daisy-chain configuration.

Package options include a tiny 8mm × 8mm, 64-ball BGA and a TQFP-64. Both packages are specified over the temperature range of 0°C to +70°C.

The ADS1194/6/8 are a family of multichannel, simultaneous sampling, 16-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

With its high levels of integration and exceptional performance, the ADS1194/6/8 family enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1194/6/8 have a flexible input multiplexer 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 ADS1194/6/8 operate at data rates as high as 8kSPS, thereby allowing the implementation of software pace detection. Lead-off detection can be implemented internal to the device, either with a pull-up/pull-down resistor or an excitation current sink/source. Three integrated amplifiers generate the Wilson Center Terminal (WCT) and the Goldberger terminals (GCT) required for a standard 12-lead medical electrocardiogram (ECG).

Multiple ADS1194/6/8 devices can be cascaded in high channel count systems in a daisy-chain configuration.

Package options include a tiny 8mm × 8mm, 64-ball BGA and a TQFP-64. Both packages are specified over the temperature range of 0°C to +70°C.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt Low-Power, 8-Channel, 16-Bit Analog Front-End for Biopotential Measurements datasheet (Rev. C) 29.11.2011
Anwendungshinweis Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29.03.2023
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19.06.2020
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19.09.2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19.03.2015
Benutzerhandbuch TIPD111 Verified Design Reference Guide 18.06.2013
Analog Design Journal How delta-sigma ADCs work, Part 2 09.11.2011
Anwendungshinweis Improving Common-Mode Rejection Using the Right-Leg Drive Amplifier 06.07.2011
Anwendungshinweis Thermal Noise Analysis in ECG Applications 03.05.2011
Anwendungshinweis Respiration Rate Measurement Using Impedance Pneumography 01.03.2011
Anwendungshinweis Analog Front-End Design for ECG Systems Using Delta-Sigma ADCs (Rev. A) 13.04.2010

Design und Entwicklung

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