P H O T O D I O D E
InGaAs PIN photodiode with preamp
G8338/G8341/G7871/G8795 series
TO-18 package, 1.3/1.55 m, 156, 622 Mbps/1.25, 2.5 Gbps
G8338/G8341/G7871/G8795 series are high-speed receivers specifically developed for 1.3/1.55 µm band optical fiber communications.
These devices incorporate a high-speed, high-sensitivity InGaAs PIN photodiode integrated with a high-speed preamp, allowing easy
connection to a latter-stage circuit. Lens window types are also available for efficient and easy coupling to an optical fiber.
Features
Applications
Wide dynamic range
Optical fiber communications
Fiber channel
Gigabit Ethernet
HDTV
series
series
series
series
G8338
G8341
G7871
G8795
(156 Mbps) : -37 to -5 dBm
(622 Mbps) : -32 to -5 dBm
(1.25 Gbps) : -25 to -1 dBm
(2.5 Gbps) : -22 to +1 dBm
SDH
Integrated with trans-impedance amplifier
Active area
series
series
G8338/G7871
G8341/G8795
Supply voltage
G8338/G8341
G7871/G8795
: 0.08 mm
: 0.04 mm
series
series
: 3.3 V
: 3.3 V, 5 V
Differential output
Absolute maximum ratings (Ta=25 °C)
ꢀ
Parameter
Supply voltage
Operating temperature Topr
Storage temperature Tstg
Symbol G8338 G8338-02 G8341 G8341-02 G7871 G7871-02 G8795 G8795-02 Unit
Vcc
-0.3, +3.8
-0.3, +3.8
-0.3, +5.5
-0.5, +6
V
-40 to +85
-40 to +85
°C
°C
ꢀ Specifications (Typ. Ta=25 °C, Vee=0 V, capacitive coupling, λ=1.31 µm, unless otherwise noted)
G8338 G8338-02 G8341 G8341-02 G7871 G7871-02 G8795 G8795-02
Parameter
Symbol
Condition
Vcc=3.3 V
Vcc=3.3 V
Vcc=3.3/5 V
RL=50 Ω
Vcc=3.3/5 V
RL=50 Ω
Unit
RL=500 Ω *1
RL=500 Ω *1
ꢀ
flat
ꢀ
lens
ꢀ
flat
ꢀ
lens
ꢀ
flat
ꢀ
lens
ꢀ
flat
ꢀ
lens
Dimensional outline
Window
-
-
-
-
Active area
A
S
Icc
Vo
tr
mm
V/mW
φ0.08
27
25
1.5
2000
156 M
φ0.04
φ0.08
2.8
35
Vcc - 1.7
250
φ0.04
1.2
mA
Vcc - 0.25
150
Photo sensitivity
Supply current
Output bias voltage
Rise time
*2, *3
17
3035
1.65
500
dark state, R =∞
dark state, RL=∞
*3 20 to 80 %
L
V
ps
bps
Data rate
B
622 M
1.25 G
2.5 G
*1: G8338/G8341 series cannot be operated with RL=50 Ω, so they should be used with a load resistance larger than 500ꢀΩ.
*2: Single ended (Vout+) measurement.
*3: G8338/G8341 series: Pin= -30 dBm
G7871 series: Pin= -22 dBm
G8795 series: Pin= -17 dBm
1