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ADS1291IRSMT Datasheet(PDF) 1 Page - Texas Instruments |
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ADS1291IRSMT Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 83 page  Control Oscillator SPI TestSignalsand Monitors RLD Reference REF ADC1 ADC2 A1 A2 MUX ¼ ¼ ToChannel RESP RESP DEMOD (ADS1292R) RESP MOD (ADS1292R) Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. ADS1291, ADS1292, ADS1292R SBAS502C – DECEMBER 2011 – REVISED APRIL 2020 ADS129x Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements 1 1 Features 1 • 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 2 Applications • Medical instrumentation (ECG) including: – Patient monitoring: Holter, event, stress, and vital signs including ECG, AED, and telemedicine – Personal care and fitness monitors (heart rate, respiration, and ECG) • High-precision, simultaneous, multichannel data acquisition Simplified Block Diagram 3 Description 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) ADS129x TQFP (32) 5.00 mm × 5.00 mm VQFN (32) 4.00 mm × 4.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. |
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