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

l Wide dynamic range

G8338 series (156 Mbps) : -37 to -5 dBm

G8341 series (622 Mbps) : -32 to -5 dBm

G7871 series (1.25 Gbps) : -25 to -1 dBm

G8795 series (2.5 Gbps) : -22 to +1 dBm

l Integrated with trans-impedance amplifier

l Active area

G8338/G7871 series:

f0.08 mm

G8341/G8795 series:

f0.04 mm

l Supply voltage

G8338/G8341 series: 3.3 V

G7871/G8795 series: 3.3 V, 5 V

l Differential output

Applications

l Optical fiber communications

l Fiber channel

l Gigabit Ethernet

l HDTV

l SDH

PHOTODIODE

InGaAs PIN photodiode with preamp

TO-18 package, 1.3/1.55

mm, 156, 622 Mbps/1.25, 2.5 Gbps

G8338/G8341/G7871/G8795 series

s Absolute maximum ratings (Ta=25 °C)

Parameter

Symbol

G8338

G8338-02

G8341

G8341-02

G7871

G7871-02

G8795

G8795-02

Unit

Supply voltage

Vcc

-0.3, +3.8

-0.3, +3.8

-0.3, +5.5

-0.5, +6

V

Operating temperature

Topr

-40 to +85

°C

Storage temperature

Tstg

-40 to +85

°C

s 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

Ω

Vcc=3.3/5 V

Ω

Unit

Dimensional outline

-

➀

➁➀➁

➂

➃➀

➁

-

Window

-

flat

lens

flat

lens

flat

lens

flat

lens

-

Active area

A

φ0.08

φ0.04

φ0.08

φ0.04

mm

Photo sensitivity

S

*

27

17

2.8

1.2

V/mW

Supply current

Icc

∞

25

3035

35

mA

Output bias voltage

Vo

∞

1.5

1.65

Vcc - 1.7

Vcc - 0.25

V

Rise time

tr

*

2000

500

250

150

ps

Data rate

B

156 M

622 M

1.25 G

2.5 G

bps

Ω, so they should be used with a load resistance larger than 500 Ω.

*2: Single ended (Vout+) measurement.

*3: G8338/G8341 series: Pin= -30 dBm

G7871 series: Pin= -22 dBm

G8795 series: Pin= -17 dBm

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