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GaAs PD-TIA Receivers
1.25Gbps, 2.5Gbps and 4Gbps
For 850nm Gigabit Ethernet and Fiber Channel
KPGX1G KPGX2GJ KPGX4G
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Features
- Low noise and high speed transimpedance amplifier built-in for optical data links in the wavelength of 850nm
- High reliability
- Wide operating voltage of 3.3V to 5.0V
- 5 pin package available for an independent PD connection bias or input power monitoring
Applications
- Optical ethernet
- 1x/2x/4x fiber channel receiver
- SDH/SONET data transmission
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Description
Reliable planar GaAs photodiodes are packaged in hermetically sealed cans with a flat glass window or a ball lens. A transimpedance preamplifier and bypass chip capacitors are built in the TO-46 package. Efficient optical coupling with a multi mode fiber or a single mode fiber is obtained with the ball lens. ROSA and pigtail types are available.
Specifications
Absolute Maximum Ratings
| Model no. |
KPGX1G,KPDX2GB,KPDX4G |
Unit |
| Storage temperature |
-40 to +125 |
°C |
| Operating temperature |
-40 to +85 |
°C |
| Power supply |
-0.5 to +6.0 (KPGX1G : +4V) |
V |
KPGX1G
Characteristics (Ta = 25°C)
| Model No. |
KPGX1G |
| Min. |
Typ. |
Max. |
Unit |
| Bit rate |
|
1.25 |
|
Gbps |
| Operating voltage |
|
+3.3±7.5% |
|
V |
| Optical sensitivity (Differential, BER = 10-12) |
|
-24 |
|
dBm |
| Bandwidth @–3dB (RL = 50Ω Pin = -10dBm) |
|
800 |
|
MHz |
| Supply current |
|
30 |
42 |
mA |
| Output impedance(Single ended) |
|
50 |
|
Ω |
| Differential output voltage (RL = 500Ω) |
|
600 |
|
mVpp |
| Photo-electric conversion efficiency (Single ended RL>500Ω) |
|
3.9 |
|
kV/W |
KPGX2GJ
Characteristics (Ta = 25°C)
| Model No. |
KPGX2GB |
| Min. |
Typ. |
Max. |
Unit |
| Bit rate |
|
2.5 |
|
Gbps |
| Operating voltage |
3 |
|
5.5 |
V |
| Optical sensitivity (Differential, BER = 10-12) |
|
-19 |
|
dBm |
| Bandwidth @–3dB (RL = 50Ω Pin = -10dBm) |
|
2.0 |
|
GHz |
| Supply current |
|
34 |
63 |
mA |
| Output impedance(Single ended) |
48 |
50 |
52 |
Ω |
| Differential output voltage (RL = 50Ω) |
|
323 |
633 |
mVpp |
| Photo-electric conversion efficiency (Single ended RL = 50Ω) |
|
0.67 |
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kV/W |
KPGX4G (Preliminary)
Characteristics (Ta = 25°C)
| Model No. |
KPDX4G |
| Min. |
Typ. |
Max. |
Unit |
| Bit rate |
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4.25 |
|
Gbps |
| Operating voltage |
3 |
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5.5 |
V |
| Optical sensitivity (Differential, BER = 10-10) |
|
-17 |
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dBm |
| Bandwidth @–3dB (RL = 50Ω Pin = -10dBm) |
2 |
2.7 |
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GHz |
| Supply current |
|
28 |
41 |
mA |
| Output impedance(Single ended) |
42.5 |
50 |
57.5 |
Ω |
| Differential output voltage (RL = 50Ω) |
220 |
280 |
400 |
mVpp |
| Noise equivalent power |
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nWrms |
| Photo-electric conversion efficiency (Single ended RL = 50Ω) |
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1.0 |
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kV/W |
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