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ASD1194 Datasheet(PDF) 1 Page - Texas Instruments |
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ASD1194 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 76 page  Control Oscillator SPI TestSignalsand Monitors PACE RLD Wilson Terminal WCT Reference REF ADC7 ADC8 ADC1 ADC2 ADC3 ADC4 ADC5 ADC6 A7 A8 A1 A2 A3 A4 A5 A6 MUX ¼ ¼ ¼ ToChannel ADS1194, ADS1196 ADS1198 www.ti.com SBAS471C – APRIL 2010 – REVISED NOVEMBER 2011 Low-Power, 8-Channel, 16-Bit Analog Front-End for Biopotential Measurements Check for Samples: ADS1194, ADS1196, ADS1198 With its high levels of integration and exceptional 1 FEATURES performance, the ADS1194/6/8 family enables the 23 • Eight Low-Noise PGAs and creation of scalable medical instrumentation systems Eight High-Resolution ADCs (ADS1198) at significantly reduced size, power, and overall cost. • Low Power: 0.55mW/channel The ADS1194/6/8 have a flexible input multiplexer • Input-Referred Noise: per channel that can be independently connected to 12 μVPP (150Hz BW, G = 6) the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration • Input Bias Current: 200pA of input channels can be selected for derivation of the • Data Rate: 125SPS to 8kSPS right leg drive (RLD) output signal. The ADS1194/6/8 • CMRR: –105dB operate at data rates as high as 8kSPS, thereby allowing the implementation of software pace • Programmable Gain: 1, 2, 3, 4, 6, 8, or 12 detection. Lead-off detection can be implemented • Supports AAMI EC11, EC13, IEC60601-1, internal to the device, either with a pull-up/pull-down IEC60601-2-27, and IEC60601-2-51 Standards resistor or an excitation current sink/source. Three • Supplies: Unipolar or Bipolar integrated amplifiers generate the Wilson Center Terminal (WCT) and the Goldberger terminals (GCT) – Analog: 2.7V to 5.25V required for a standard 12-lead medical – Digital: 1.65V to 3.6V electrocardiogram (ECG). • Built-In Right Leg Drive Amplifier, Lead-Off Multiple ADS1194/6/8 devices can be cascaded in Detection, WCT, Test Signals high channel count systems in a daisy-chain • Pace Detection Channel Select configuration. • Built-In Oscillator and Reference Package options include a tiny 8mm × 8mm, 64-ball • Flexible Power-Down, Standby Mode BGA and a TQFP-64. Both packages are specified • SPI ™-Compatible Serial Interface over the temperature range of 0 °C to +70°C. • Operating Temperature Range: 0 °C to +70°C APPLICATIONS • Medical Instrumentation (ECG) including: – Patient monitoring; Holter, event, stress, and vital signs Including ECG, AED, Telemedicine – Evoked audio potential (EAP), Sleep study monitor • High-Precision, Simultaneous, Multichannel Signal Acquisition DESCRIPTION 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. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 SPI is a trademark of Motorola. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2010–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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