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ADPD103 Datasheet(PDF) 6 Page - Analog Devices

Part # ADPD103
Description  TEMPERATURE AND POWER SPECIFICATIONS
PDF  53 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADPD103 Datasheet(HTML) 6 Page - Analog Devices

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Data Sheet
ADPD103
Rev. B | Page 5 of 52
PERFORMANCE SPECIFICATIONS
AVDD = DVDD = 1.8 V, TA = full operating temperature range, unless otherwise noted.
Table 3.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DATA AQUISITION
Resolution
Single pulse
14
Bits
Resolution/Sample
64 to 255 pulses
20
Bits
Resolution/Data Read
64 to 255 pulses and sample average = 128
27
Bits
LED DRIVER
LED Current Slew Rate1
Rise
Slew rate control setting = 0; TA = 25°C; ILED = 70 mA
240
mA/µs
Slew rate control setting = 7; TA = 25°C; ILED = 70 mA
1400
mA/µs
Fall
Slew rate control setting = 0, 1, 2; TA = 25°C; ILED = 70 mA
3200
mA/µs
Slew rate control setting = 6, 7; TA = 25°C; ILED = 70 mA
4500
mA/µs
LED Peak Current
LED pulse enabled
8
250
mA
Driver Compliance Voltage
Voltage above ground required for LED driver operation
0.2
V
LED PERIOD
AFE width = 4 µs
19
µs
AFE width = 3 µs
17
µs
Sampling Frequency2
Time Slot A only; normal mode; 1 pulse; OFFSET_LEDA = 23 µs; PERIOD_LEDA = 19 µs
0.122
3230
Hz
Time Slot B only; normal mode; 1 pulse; OFFSET_LEDA = 23 µs; PERIOD_LEDA = 19 µs
0.122
3820
Hz
Both time slots; normal mode; 1 pulse; OFFSET_LEDA = 23 µs; PERIOD_LEDA = 19 µs
0.122
1750
Hz
Time Slot A only; normal mode; 8 pulses; OFFSET_LEDA = 23 µs; PERIOD_LEDA = 19 µs
0.122
2257
Hz
Time Slot B only; normal mode; 8 pulses; OFFSET_LEDA = 23 µs; PERIOD_LEDA = 19 µs
0.122
2531
Hz
Both time slots; normal mode; 8 pulses; OFFSET_LEDA = 23 µs; PERIOD_LEDA = 19 µs
0.122
1193
Hz
CATHODE PIN (PDC) VOLTAGE
During All Sampling Periods
Register 0x54, Bit 7 = 0x0; Register 0x3C, Bit 9 = 13
1.8
V
Register 0x54, Bit 7 = 0x0; Register 0x3C, Bit 9 = 0
1.3
V
During Slot A Sampling
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[9:8] = 0x03
1.8
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[9:8] = 0x1
1.3
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[9:8] = 0x2
1.55
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[9:8] = 0x34
0
V
During Slot B Sampling
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[11:10] = 0x03
1.8
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[11:10] = 0x1
1.3
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[11:10] = 0x2
1.55
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[11:10] = 0x34
0
V
During Sleep Periods
Register 0x54, Bit 7 = 0x0; Register 0x3C, Bit 9 = 1
1.8
V
Register 0x54, Bit 7 = 0x0; Register 0x3C, Bit 9 = 0
1.3
V
Register 0x54, Bit 7 = 0x1; Register 0x54, Bits[13:12] = 0x0
1.8
V
Register 0x54, Bit 7 = 0x1; Register 0x54[13:12] = 0x1
1.3
V
Register 0x54, Bit 7 = 0x1; Register 0x54[13:12] = 0x2
1.55
V
Register 0x54, Bit 7 = 0x1; Register 0x54[13:12] = 0x3
0
V
PHOTODIODE INPUT PINS/ ANODE
VOLTAGE
During All Sampling Periods
1.3
V
During Sleep Periods
Cathode voltage
V
1
LED inductance is negligible for these values. The effective slew rate slows with increased inductance.
2
The maximum values in this specification are the internal ADC sampling rates in normal mode. The I2C read rates in some configurations may limit the actual output
data rate of the device
3
This mode may induce additional noise and is not recommended unless absolutely necessary. The 1.8 V setting uses VDD, which contains greater amounts of
differential voltage noise with respect to the anode voltage. A differential voltage between the anode and cathode injects a differential current across the capacitance
of the photodiode of the magnitude C × dV/dt.
4
This setting is not recommended for photodiodes because it causes a 1.3 V forward bias of the photodiode.



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