ADPD107 datasheet(17/66 Pages) AD

номер детали	ADPD107

подробное описание детали	Photometric Front Ends

PDF	66 Pages

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производитель	AD [Analog Devices]

домашняя страница	http://www.analog.com

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17 / 66 page

Data Sheet

ADPD105/ADPD106/ADPD107

Rev. A | Page 17 of 66

TYPICAL PERFORMANCE CHARACTERISTICS

FREQUENCY (Hz)

Figure 10. 32 kHz Clock Frequency Distribution

(Default Settings, Before User Calibration: Register 0x4B = 0x2612)

32.0

32.5

33.0

33.5

34.0

34.5

35.0

35.5

36.0

FREQUENCY (Hz)

Figure 11. 32 MHz Clock Frequency Distribution

(Default Settings, Before User Calibration: Register 0x4D = 0x0098)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

100

120

140

160

PHOTODIODE CAPACITANCE (pF)

25k

50k

NRMS = 0.24 × √CPD + 0.81

NRMS = 0.11 × √CPD + 0.97

NRMS = 0.04 × √CPD + 1.13

NRMS = 0.02 × √CPD + 1.16

100k

200k

Figure 12. RMS Noise vs. Photodiode Capacitance

0.5

1.0

1.5

2.0

2.5

3.0

123

NUMBER OF CHANNELS

NOISE vs.

NUMBER OF CHANNELS

SQUARE ROOT

OF CHANNEL COUNT

Figure 13. Noise Multiple of Channel Sum vs. Number of Channels

0.5

1.0

1.5

2.0

2.5

3.0

3.5

100

150

200

TIAGAIN(kΩ)

Figure 14. Referred to Input (RTI) Noise vs. TIA Gain

100

150

200

250

300

350

400

LED DRIVER VOLTAGE (V)

LED COARSE SETTING = 0x0

LED COARSE SETTING = 0xF

Figure 15. LED Driver Current vs. LED Driver Voltage at Various Coarse Settings

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