1.25Gbps PD-TIA Receiver
KPDX1G / KPDX1G-T / KPDX1G-LRS
Features
- Low noise and high gain trans-impedance amplifier built-in to meet OC-24
- Low operating voltage of 3.3V
- AGC circuit built-in
- 5 pin package available for an independent PD connection
Applications
- Optical communication
- Optical LAN
- OE converters
Description
A high-speed InGaAs PIN photodiode is integrated with a transimpedance preamplifier and bypass chip capacitors, and is encapsulated in a small TO-46 package. The transimpedance preamplifier is furnished with an automatic gain control (AGC) circuit to function for a wide range of the input optical power. A ball lens cap with AR coating is hermetically sealed to provide an efficient coupling with a single mode fiber. The pigtail type and the LC-ROSA type are available as an option.
Specifications
Absolute Maximum Ratings
| Model no. |
KPDX1G |
Unit |
| Storage temperature |
-40 to +85 |
°C |
| Operating temperature |
-40 to +85 |
°C |
| Power supply |
0 to +4.5 |
V |
| Optical power input |
3 |
mW |
Characteristics (Ta = 25°C)
| Model No. |
KPDX1G |
| Min. |
Typ. |
Max. |
Unit |
| Bit rate |
|
1.25 |
|
Gbps |
| Operating voltage |
|
+3.3 ± 7.5% |
|
V |
| Optical sensitivity (Differential, BER = 10-10) |
|
-28 |
|
dBm |
| Bandwidth @–3dB (RL = 500Ω Pin = -10dBm, small signal moudlation) |
|
800 |
|
MHz |
| Supply current |
|
30 |
42 |
mA |
| Output impedance(Single Ended) |
|
50 |
|
Ω |
| Differential output voltage (RL = 500Ω, single) |
|
600 |
|
mVpp |
| Noise equivalent power |
|
|
246 |
nWrms |
| Photo-electric conversion efficiency (Single Ended RL > 500Ω) |
4.0 |
6.8 |
|
kV/W |
Specifications of Pigtail Type and LC ROSA Type
A standard single mode fiber is coupled to a hermetically sealed PD-TIA module. A multimode fiber pigtail is available as an option. The standard LC ROSA provides an efficient coupling with a single mode fiber with a stub.
Absolute Maximum Ratings
| Item |
Symbol |
Value |
Unit |
| Operating Temperature |
Ta |
-40 to +85 |
°C |
| Storage Temperature |
Tstg |
-40 to +85 |
°C |
| Electric Parameters |
See maximum ratings of respective PD-TIA devices |
Characteristics (Ta = 25°C)
| Item |
Symbol |
Min |
Typ |
Max |
Unit |
| Optical Reflection (@1310nm) |
ORL |
27 |
- |
- |
dB |
| Electric Parameters |
See electric performances of respective PD-TIA devices |
| Fiber Type* |
Single mode fiber (non-flamable material) |
| Fiber Connector Type* |
SC connector |
| Mode Field Diameter* |
|
|
9.5 ± 1 |
|
µm |
| Clad Diameter* |
|
|
125 ± 2 |
|
µm |
| Differential Index* |
|
|
0.3 ± 0.04 |
|
% |
| Fiber Diameter* |
|
|
0.9 ± 0.1 |
|
mm |
| Fiber Length* |
|
|
1100 ± 100 |
|
mm |
| Minimum Bending Radius* |
|
|
20 |
|
mm |
*only for pigtail type
