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ADS1298R Arkusz danych(PDF) 1 Page - Texas Instruments |
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ADS1298R Arkusz danych(HTML) 1 Page - Texas Instruments |
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1 / 87 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 RESP Resp RESP DEMOD ADS129xR ADS129xR ADS1294, ADS1294R ADS1296, ADS1296R ADS1298, ADS1298R www.ti.com SBAS459G – JANUARY 2010 – REVISED FEBRUARY 2011 Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements Check for Samples: ADS1294, ADS1294R, ADS1296, ADS1296R, ADS1298, ADS1298R With its high levels of integration and exceptional 1 FEATURES performance, the ADS1294/6/8/4R/6R/8R family 23 • Eight Low-Noise PGAs and Eight enables the development of scalable medical High-Resolution ADCs (ADS1298, ADS1298R) instrumentation systems at significantly reduced size, • Low Power: 0.75mW/channel power, and overall cost. • Input-Referred Noise: 4 μVPP (150Hz BW, G = 6) The ADS1294/6/8/4R/6R/8R have a flexible input • Input Bias Current: 200pA multiplexer per channel that can be independently connected to the internally-generated signals for test, • Data Rate: 250SPS to 32kSPS temperature, and lead-off detection. Additionally, any • CMRR: –115dB configuration of input channels can be selected for • Programmable Gain: 1, 2, 3, 4, 6, 8, or 12 derivation of the right leg drive (RLD) output signal. The ADS1294/6/8/4R/6R/8R operate at data rates as • Unipolar or Bipolar Supplies: high as 32kSPS, thereby allowing the implementation AVDD = 2.7V to 5.25V, DVDD = 1.65V to 3.6V of software PACE detection. Lead-off detection can • Built-In Right Leg Drive Amplifier, Lead-Off be implemented internal to the device, either with a Detection, WCT, PACE Detection, Test Signals pull-up/pull-down resistor or an excitation current • Integrated Respiration Impedance sink/source. Three integrated amplifiers generate the Measurement (ADS1294R/6R/8R only) Wilson Central Terminal (WCT) and the Goldberger Central Terminals (GCT) required for a standard • Digital PACE Detection Capability 12-lead ECG. The ADS1294R/6R/8R versions • Built-In Oscillator and Reference include a fully-integrated, respiration impedance • Flexible Power-Down, Standby Modes measurement function. • SPI ™-Compatible Serial Interface Multiple ADS1294/6/8/4R/6R/8R devices can be • Operating Temperature Range: cascaded in high channel count systems in a daisy-chain configuration. –40°C to +85°C • Non-Magnetic BGA Package (ADS1294/6/8 and Package options include a tiny 8mm × 8mm, 64-ball ADS1194/6/8) BGA and a TQFP-64. The ADS1294/6/8 BGA version is specified over the commercial temperature range of 0 °C to +70°C. The ADS1294R/6R/8R BGA and APPLICATIONS ADS1294/6/8 TQFP versions are specified over the • Medical Instrumentation (ECG, EMG and EEG): industrial temperature range of –40°C to +85°C. Patient monitoring; Holter, event, stress, and vital signs including ECG, AED, telemedicine Bispectral index (BIS), Evoked audio potential (EAP), Sleep study monitor • High-Precision, Simultaneous, Multichannel Signal Acquisition DESCRIPTION The ADS1294/6/8/4R/6R/8R 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 ADS1294/6/8/4R/6R/8R incorporate all of the features that are commonly required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications. 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. © 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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