ADPD1081 datasheet(9/74 Pages) AD

9 / 74 page

Data Sheet

ADPD1080/ADPD1081

Rev. C | Page 9 of 74

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

SYSTEM PERFORMANCE

Total Output Noise Floor

Normal mode; per pulse; per channel; no LED;

photodiode capacitance (CPD) = 70 pF

25 kΩ; referred to ADC input

1.0

LSB rms

25 kΩ; referred to peak input signal for

2 µs LED pulse

4.6

nA rms

25 kΩ; referred to peak input signal for

3 µs LED pulse

3.3

nA rms

25 kΩ; saturation SNR per pulse per channel4

78.3

50 kΩ; referred to ADC input

1.2

LSB rms

50 kΩ; referred to peak input signal for

2 µs LED pulse

2.8

nA rms

50 kΩ; referred to peak input signal for

3 µs LED pulse

2.0

nA rms

50 kΩ; saturation SNR per pulse per channel4

76.6

100 kΩ; referred to ADC input

1.5

LSB rms

100 kΩ; referred to peak input signal for

2 µs LED pulse

1.7

nA rms

100 kΩ; referred to peak input signal for

3 µs LED pulse

1.2

nA rms

100 kΩ; saturation SNR per pulse per channel4

74.9

200 kΩ; referred to ADC input

2.2

LSB rms

200 kΩ; referred to peak input signal for

2 µs LED pulse

1.3

nA rms

200 kΩ; referred to peak input signal for

3 µs LED pulse

0.9

nA rms

200 kΩ; saturation SNR per pulse per channel4

71.2

This saturation level applies to the ADC only and, therefore, includes only the pulsed signal. Any nonpulsatile signal is removed prior to the ADC stage.

ADC resolution is listed per pulse when the AFE offset is correctly compensated per the AFE Operation section. If using multiple pulses, divide by the number of pulses.

This saturation level applies to the full signal path and, therefore, includes both the ambient signal and the pulsed signal. The linear dynamic range of the TIA is 85% of

the TIA saturation levels shown.

The noise term of the saturation SNR value refers to the receiver noise only and does not include photon shot noise or any noise on the LED signal itself.

ADPD1081 Datasheet(PDF) 9 Page - Analog Devices

ADPD1081 Datasheet(HTML) 9 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74

Datasheet Download

Link URL