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ADPD4100 Datasheet(PDF) 5 Page - Analog Devices |
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ADPD4100 Datasheet(HTML) 5 Page - Analog Devices |
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5 / 101 page  Data Sheet ADPD4100/ADPD4101 Rev. 0 | Page 5 of 101 Parameter Test Conditions/Comments Min Typ Max Unit PULSED SIGNAL CONVERSIONS, 2 μs LED PULSE 3 μs integration width, continuous connect mode ADC Resolution1 TIA feedback resistor 12.5 kΩ 8.2 nA/LSB 25 kΩ 4.1 nA/LSB 50 kΩ 2.04 nA/LSB 100 kΩ 1.02 nA/LSB 200 kΩ 0.51 nA/LSB ADC Saturation Level2 TIA feedback resistor 12.5 kΩ 67 μA 25 kΩ 33 μA 50 kΩ 16.7 μA 100 kΩ 8.37 μA 200 kΩ 4.19 μA FULL SIGNAL CONVERSIONS TIA Linear Dynamic Range (per Channel) Total input current, 1% compression point, TIA_VREF = 1.265 V 12.5 kΩ 72 μA 25 kΩ 38 μA 50 kΩ 18.7 μA 100 kΩ 9.3 μA 200 kΩ 4.6 μA SYSTEM PERFORMANCE Referred to Input Noise Continuous connect mode, single pulse, single channel, floating input, TIA_VREF = 1.265 V, 3 μs integration time 12.5 kΩ TIA gain 8.2 nA rms 25 kΩ TIA gain 4.1 nA rms 50 kΩ TIA gain 2.2 nA rms 100 kΩ TIA gain 1.2 nA rms 200 kΩ TIA gain 0.61 nA rms Referred to Input Noise Continuous connect mode, single pulse, single channel, 90% full-scale input signal, no ambient light, TIA_VREF = 1.265 V, VCx = TIA_VREF + 215 mV, 2 μs LED pulse, photodiode capacitance (CPD) = 70 pF, input resistor = 500 Ω 12.5 kΩ TIA gain 10.3 nA rms 25 kΩ TIA gain 5.3 nA rms 50 kΩ TIA gain 2.7 nA rms 100 kΩ TIA gain 1.5 nA rms 200 kΩ TIA gain 0.97 nA rms SNR 12.5 kΩ TIA gain, single pulse 76 dB 25 kΩ TIA gain, single pulse 76 dB 50 kΩ TIA gain, single pulse 75 dB 100 kΩ TIA gain, single pulse 74 dB 200 kΩ TIA gain, single pulse 72 dB 100 kΩ TIA gain, 100 Hz ODR, 80 pulses, CPD = 70 pF, 0.5 Hz to 20 Hz bandwidth, transmit and receive signal chain 100 dB AC Ambient Light Rejection DC to 1 kHz, linear range of TIA, TIA gain = 25 kΩ, 50 kΩ, 100 kΩ, 200 kΩ 60 dB DC to 1 kHz, linear range of TIA, TIA gain = 12.5 kΩ 55 dB DC Power Supply Rejection Ratio (PSRR) At 75% full scale input 50 dB 1 ADC resolution is listed per pulse. If using multiple pulses, divide by the number of pulses. 2 ADC saturation level applies to pulsed signal only, because ambient signal is rejected prior to ADC conversion. |
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