Features

Applications

l APD evaluation

l Spatial light transmission

l Bar code readers

l Laser radars

l Optical rangefinders

l Optical communications

MODULE

APD module

Operates an APD with single 5 V supply

C5331 series

l Choice of high sensitivity APDs

A total of 11 types are available, including 6 types of 800 nm band APDs with

active areas from

φ0.2 to φ5 mm, 3 types of short-wavelength APDs with active

areas from

φ1 to φ5 mm, and FC connector types.

l High sensitivity detection board optimized for APD evaluation

An APD and high-speed current-to-voltage amplifier circuit are mounted on a

compact board. The high-speed current-to-voltage amplifier circuit features a

low-noise configuration ideal for the APD signal readout and operates at high

speeds yet with high sensitivity.

l Easy handling

Single 5 V supply operation

l Built-in temperature-compensated bias voltage circuit

Controls the bias voltage with a thermosensor to keep the APD gain constant.

Gain is stabilized to as low as ±2.5 % Typ. at ambient temperatures of 25 ±10 ˚C.

Ripple noise usually inherent to high voltage power supplies is also minimized.

l Compact and lightweight

The circuit board is no larger than business card size, and weighs only 52 g.

l Low price

l Custom devices available with different dimensions and specifications

s Selection guide

Type No.

Active area

(mm)

Frequency bandwidth

-3 dB

(Hz)

Type of APD

Peak sensitivity

wavelength

(nm)

C5331

C5331-30 *

1

φ1.5

C5331-01

C5331-31 *

2

φ0.2

C5331-02

φ0.5

C5331-03

φ1.0

4 k to 100 M

C5331-04

φ3.0

4 k to 80 M

C5331-05

φ5.0

4 k to 50 M

Standard type

800

C5331-11

φ1.0

4 k to 100 M

C5331-12

φ3.0

4 k to 40 M

C5331-13

φ5.0

4 k to 20 M

Short-wavelength type

620

*1: C5331 + FC connector

*2: C5331-01 + FC connector with lens

(compatible with GI 50/125 fiber)

Note: Gain is preset to 30 prior to shipping.

HIGH VOLTAGE GENERATOR

+200 V

+5 V

+5 V

BNC CONNECTOR

TEMPERATURE MONITOR

APD

HIGH-SPEED CURRENT-TO-VOLTAGE CIRCUIT

VOLTAGE CONTROLLER

KACCC0013EA

s

s

s

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s Block diagram

1