Data Sheet

ADL5309

SPECIFICATIONS

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Rev. A | 3 of 25

Supply voltage (VCC) = 3.0 V, TA = 25°C, and default register settings unless otherwise noted.

Table 1. Specifications

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

INPUT INTERFACES

Pin B1 = INP1 and Pin C1 = INP2

Input Current Range (IINP1, IINP2)

10

pA

25

mA

Input Node Voltage (VINP1, VINP2)

10 pA < IINP1 and IINP2 < 3 mA

1.6 to 1.8

V

10 pA < IINP1 and IINP2 < 25 mA

1.6 to 2.5

V

SUM Voltage

1.6

V

PHOTODIODE BIAS

Pin A2 = PDB1 and Pin D2 = PDB2

Output Voltage (VPDB1, VPDB2)

IINP1 = IINP2 = 1 nA

1.6

V

IINP1 = IINP2 = 10 mA; VCC = 5 V

4.2

V

Absolute Offset Voltage, TC = 70°C (VPDB1 − VINP1), (VPDB2 − VINP2), and IINP1 = IINP2 = 1 nA

0.4

mV

Transresistance (RT)

(VPDB1 − VINP1)/IINP1 and/or (VPDB2 − VINP2)/IINP2

231

Ω

IINP1, IINP2 Threshold (ITH)

Constant photodiode bias voltage below ITH

220

μA

LOGARITHMIC OUTPUT

Pin A5 = OUT1 and Pin D5 = OUT2

Logarithmic Slope

Over 1 nA < IINP1 and IINP2 < 1 mA range

198

200

202

mV/dec

Logarithmic Intercept

10

pA

Logarithmic Conformance Error

1 nA < IINP1 and IINP2 < 1 mA

±0.3

dB

100 pA < IINP1 and IINP2 < 10 mA

±0.6

dB

Logarithmic Conformance Error

over Temperature

1 nA < IINP1, IINP2 < 1 mA, and TA = 5°C to 70°C

±0.4

dB

100 pA < IINP1, IINP2 < 10 mA, and TA = 5°C to 70°C

±0.8

dB

Output Voltage (VOUT1, VOUT2)

IINP1 and IINP2 = 100 pA

0.403

V

IINP1 and IINP2 = 1 μA

0.999

V

IINP1 and IINP2 = 10 mA

1.808

V

Small Signal Bandwidth

IINP1 and IINP2 = 10 nA and capacitor feedback (CF) =

15 (Default register state)

75

kHz

IINP1 and IINP2 = 10 nA and CF = 0

550

kHz

Rise and Fall Times

IINP1 a IINP2 from 10 nA to 100 nA, measured at 10%

and 90% of steady state VOUT1 and VOUT2

1.6/3.8

μs

Short Circuit Output Current

IINP1 and IINP2 = 1 nA, VOUT1 and VOUT2 = 0.7 V

32

mA

IINP1 and IINP2= 10 mA, VOUT1 and VOUT2 = 1.5 V

15

mA

Channel-to-Channel Isolation

DC isolation to OUT1 for IINP2 = 25 mA and IINP1 = 1 nA

or OUT2 for IINP1 = 25 mA and IINP2 = 1 nA

2

mV

POWER SUPPLY

Pin A3 = VCC

Positive Supply Voltage

2.85

3

5.25

V

Quiescent Current

IINP1 and IINP2 = 1 μA

57

mA

Power Supply Rejection Ratio

(PSRR)

IINP1 and IINP2 = 100 pA at 60 Hz

26

dB

DATA ACQUISITION

ADC Resolution

14

Bits

LOG Output Conversion Slope

74.5

LSB/dB

Output Data Rate

22

kHz

Output Noise

IINP1, IINP2 = 1 μA

6.6

LSB rms

SERIAL BUS ADDRESS (SBA)

INTERFACE

Pin A4 = SBA

Serial Bus Address 0x6C

−0.05 VCC

+0.15 VCC

V

Serial Bus Address 0x6D

0.35 VCC

0.65 VCC

V

Serial Bus Address 0x6E

0.85 VCC

1.05 VCC

V