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AFE4403 Datasheet(PDF) 19 Page - Texas Instruments

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Part # AFE4403
Description  AFE4403 Ultra-Small, Integrated Analog Front-End for Heart Rate Monitors and Low-Cost Pulse Oximeters
PDF  97 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

AFE4403 Datasheet(HTML) 19 Page - Texas Instruments

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TX_REF (V)
DAC setting = 50 codes
DAC setting = 75 codes
DAC setting = 100 codes
C026
AFE4403
www.ti.com
SBAS650B – MAY 2014 – REVISED JULY 2014
Typical Characteristics (continued)
At PRF = 100 Hz, 25% duty cycle, RF = 500 kΩ, CF is adjusted to keep TIA time constant at 1/10th of sampling duration, All
supplies at 3.3 V, 8-MHz external clock, CLKOUT tri-state, 1-µF capacitor on TX_REF and BG pins, detector CIN = 50 pF,
TX_REF = 0.5 V, ADC averaging = max allowed, and SNR in dBFS is noise referred to full-scale range of 2 V, unless
otherwise noted.
Figure 35. Transmitter Current vs TX_REF Voltage
(Multiple DAC Settings)
Copyright © 2014, Texas Instruments Incorporated
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