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AV02-3407EN - May 7, 2012

AFBR-2624Z/2529Z Receiver

The AFBR-2624Z/2529Z receiver consists of a digitalizing IC with integrated photodiode to produce an output level that

is compatible with TTL logic. The integrated photodiode and the following amplifier uses a fully differential approach

with an active and a passive area for an improved EMI performance. Within the specified ranges AFBR-2529Z and AFBR-

2624Z devices will support a BER <10E-9.

Receiver Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Supply Current

20

30

mA

Data Output Voltage – Low

-0.3

0.4

V

1

Data Output Voltage – High

2.5

V

1

Rise Time (10%–90%)

5

ns

2, 3

Fall Time (10%–90%)

5

ns

2, 3

Pulse Width Distortion

PWD

-4

+4

ns

6, 7, 8

-5

+8

ns

8, 9

Propagation Delay

30

ns

Receiver Optical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Input Optical Power (Peak)

-22

+1

dBm

Input Optical Power Off-State

-40

dBm

10

Optical Spectrum Range



630

685

nm

Notes:

1. Standard TTL output.

3. Optical Power generated by a standard Avago Technologies Transmitter, with ideal alignment to the photodiode using a 1 mm POF (NA = 0.5).

6. Optical input of 50 MBaud PRBS-7 pattern and 50% duty cycle.

7. Pulse width is measured at 50% threshold using a rising edge trigger and PRBS-7 pattern.

8. If data rate is below 1Mbaud the pulse width distortion would be equal to the pulse width distortion of the 1st to 3rd pulses for higher datarates.

9. The threshold of the 1st pulse of a data sequence is difficult to adjust and therefore the pulse width distortion up to the 3rd pulse is higher than

for all other pulses (worst case for the 1st pulse). This strongly depends on the quality of the rising and falling edge of the optical input. The faster

the edges the smaller the pulse width variation. Furthermore lower data rates would result in the same issue as all the pulse become 1st pulses.

10. Output low for AFBR-2624Z and Output high for AFBR-2529Z.