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ADS1291

AKTIV

1-kanaliges Analog-Front-End (AFE), 24 Bit, für EKG-Anwendungen

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ADS1291

AKTIV
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Produktdetails

Applications 1-lead ECG, ECG patch Number of input channels 1 Resolution (Bits) 24 Number of LEDs 0 Interface type SPI Operating temperature range (°C) -40 to 85 Rating Catalog
Applications 1-lead ECG, ECG patch Number of input channels 1 Resolution (Bits) 24 Number of LEDs 0 Interface type SPI Operating temperature range (°C) -40 to 85 Rating Catalog
TQFP (PBS) 32 49 mm² 7 x 7 VQFN (RSM) 32 16 mm² 4 x 4
  • Two low-noise PGAs and two high-resolution ADCs
    (ADS1292 and ADS1292R)
  • Low power: 335 µW/channel
  • Input-referred noise: 8 µVPP
    (150-Hz BW, G = 6)
  • Input bias current: 200 pA
  • Data rate: 125 SPS to 8 kSPS
  • CMRR: 120 dB
  • Programmable gain: 1, 2, 3, 4, 6, 8, or 12
  • Supplies: unipolar or bipolar
    • Analog: 2.7 V to 5.25 V
    • Digital: 1.7 V to 3.6 V
  • Built-in right leg drive amplifier, lead-off detection, test signals
  • Integrated respiration impedance measurement (ADS1292R)
  • Built-in oscillator and reference
  • Flexible power-down, standby mode
  • SPI™-compatible serial interface
  • Operating temperature range: –40°C to +85°C
  • Two low-noise PGAs and two high-resolution ADCs
    (ADS1292 and ADS1292R)
  • Low power: 335 µW/channel
  • Input-referred noise: 8 µVPP
    (150-Hz BW, G = 6)
  • Input bias current: 200 pA
  • Data rate: 125 SPS to 8 kSPS
  • CMRR: 120 dB
  • Programmable gain: 1, 2, 3, 4, 6, 8, or 12
  • Supplies: unipolar or bipolar
    • Analog: 2.7 V to 5.25 V
    • Digital: 1.7 V to 3.6 V
  • Built-in right leg drive amplifier, lead-off detection, test signals
  • Integrated respiration impedance measurement (ADS1292R)
  • Built-in oscillator and reference
  • Flexible power-down, standby mode
  • SPI™-compatible serial interface
  • Operating temperature range: –40°C to +85°C

The ADS1291, ADS1292, and ADS1292R are multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

The ADS1291, ADS1292, and ADS1292R incorporate all features commonly required in portable, low-power medical electrocardiogram (ECG), sports, and fitness applications.

With high levels of integration and exceptional performance, the ADS1291, ADS1292, and ADS1292R enable the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1291, ADS1292, and ADS1292R 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 ADS1291, ADS1292, and ADS1292R operate at data rates up to 8 kSPS. Lead-off detection can be implemented internal to the device, using the device internal excitation current sink or source. The ADS1292R version includes a fully integrated respiration impedance measurement function.

The devices are packaged in a 5-mm × 5-mm, 32-pin thin quad flat pack (TQFP) and a 4-mm x 4-mm, 32-pin quad flat pack with no leads (VQFN). Operating temperature is specified from –40°C to +85°C.

The ADS1291, ADS1292, and ADS1292R are multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

The ADS1291, ADS1292, and ADS1292R incorporate all features commonly required in portable, low-power medical electrocardiogram (ECG), sports, and fitness applications.

With high levels of integration and exceptional performance, the ADS1291, ADS1292, and ADS1292R enable the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1291, ADS1292, and ADS1292R 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 ADS1291, ADS1292, and ADS1292R operate at data rates up to 8 kSPS. Lead-off detection can be implemented internal to the device, using the device internal excitation current sink or source. The ADS1292R version includes a fully integrated respiration impedance measurement function.

The devices are packaged in a 5-mm × 5-mm, 32-pin thin quad flat pack (TQFP) and a 4-mm x 4-mm, 32-pin quad flat pack with no leads (VQFN). Operating temperature is specified from –40°C to +85°C.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet ADS129x Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements datasheet (Rev. C) PDF | HTML 24 Apr 2020
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 18 Mär 2024
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dez 2023
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mär 2023
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19 Jun 2020
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mär 2015
Application note Understanding Lead-Off Detection in ECG (Rev. A) 14 Jan 2015
Application note Improving Common-Mode Rejection Using the Right-Leg Drive Amplifier 06 Jul 2011
Application note Respiration Rate Measurement Using Impedance Pneumography 01 Mär 2011
Application note Analog Front-End Design for ECG Systems Using Delta-Sigma ADCs (Rev. A) 13 Apr 2010

Design und Entwicklung

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Simulationsmodell

ADS129x IBIS Model. (Rev. A)

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
TQFP (PBS) 32 Ultra Librarian
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