2.5 Gbps PIN-TIA module

FEATURES

Wide dynamic range, typically 6µW to 1.7mW (p-p) Differential transimpedance of 4 Bandwidth from DC to 1.9GHz Differential outputs

On-chip Automatic Gain Control(AGC) Single supply voltage 3.3V

Remains linear up to 1.7mW(p-p) input current(unclipped)

AGC CHARACTERISTICS

The XPD0250CT-001 can handle input optical power from 6µW to 1.7mW which is equivalent to a dynamic range of 49dB. At low input optical power, the transimpedance gain ZT must be high to obtain enough output voltage, and the noise should be low enough to guarantee a minimum bit error rate. The transimpedance is regulated from 4 at low input optical power (Po<30µW) to 80 at high power (Po

=1.7mW).

APPLICATIONS

Digital fiber optic receiver in short, medium and long haul optical telecommunications

transmission systems or in high speed data networks Wide-band RF gain block

ELECTRICAL CHARACTERISTICS (TC = 25℃)

Parameter

Power supply voltage Power supply current Photodiode bias voltage* Transimpedance 3dB Bandwidth

Transimpedence gain deviation Electrical return loss Responsivity Output impedence

SymbolVCCICCVPDZTf3dBΔZTLER ZO

Test Condition

- - -

RL=50 , measured differenctially, AC coupled

Min. 3.3

Typ. 26

Max. 37

UnitmA

V

4

K

Pin=-10dBm f=1MHz to 1.8GHz

- λ = 1550nm

-

GHz 0.85

2

dB A/W

dB

* Photodiode bias is necessary only for 5 pin type module.

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XL Photonics, Inc.