ADPD188GG datasheet(5/61 Pages) AD

5 / 61 page

Data Sheet

ADPD188GG

Rev. B | Page 5 of 61

ANALOG SPECIFICATIONS

VDD1 = VDD2 = 1.8 V, and TA = full operating temperature range, unless otherwise noted.

Table 2.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

EXT_INx SERIES RESISTANCE (R_IN)1

Measured from −3 µA to +3 µA

6.5

kΩ

PULSED SIGNAL CONVERSIONS, 3 μs

WIDE LED PULSE2

4 μs wide AFE integration; normal operation,

ADC Resolution3

TIA feedback resistor

25 kΩ

3.27

nA/LSB

50 kΩ

1.64

nA/LSB

100 kΩ

0.82

nA/LSB

200 kΩ

0.41

nA/LSB

ADC Saturation Level

TIA feedback resistor

25 kΩ

26.8

μA

50 kΩ

13.4

μA

100 kΩ

6.7

μA

200 kΩ

3.35

μA

Ambient Signal Headroom on Pulsed

Signal

TIA feedback resistor

25 kΩ

23.6

μA

50 kΩ

11.8

μA

100 kΩ

5.9

μA

200 kΩ

2.95

μA

PULSED SIGNAL CONVERSIONS, 2 μs

WIDE LED PULSE2

3 μs wide AFE integration; normal operation, Register 0x43

and Register 0x45 = 0xADA5

ADC Resolution3

TIA feedback resistor

25 kΩ

4.62

nA/LSB

50 kΩ

2.31

nA/LSB

100 kΩ

1.15

nA/LSB

200 kΩ

0.58

nA/LSB

ADC Saturation Level

TIA feedback resistor

25 kΩ

37.84

μA

50 kΩ

18.92

μA

100 kΩ

9.46

μA

200 kΩ

4.73

μA

Ambient Signal Headroom on Pulsed

Signal

TIA feedback resistor

25 kΩ

12.56

μA

50 kΩ

6.28

μA

100 kΩ

3.14

μA

200 kΩ

1.57

μA

FULL SIGNAL CONVERSIONS4

TIA Saturation Level Pulsed Signal and

Ambient Level

TIA feedback resistor

25 kΩ

50.4

μA

50 kΩ

25.2

μA

100 kΩ

12.6

μA

200 kΩ

6.3

μA

TIA Linear Range

TIA feedback resistor

25 kΩ

42.8

μA

50 kΩ

21.4

μA

100 kΩ

10.7

μA

200 kΩ

5.4

μA

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