HAMAMATSU H7468-20, H7468-03, H7468-01 Datasheet

Metal Package PMT with Internal Charge Amp+ADC Type

Photosensor Modules H7468 Series

The H7468 series are photosensor modules assembled with a photomultiplier
tube, an AD converter circuit and a microcontroller. These photosensor mod­ules operate from a single +5 V supply and convert the photomultiplier tube
analog signals into 12-bit digital data which can be sent to a PC (personal
computer) through the RS-232C interface. The photomultiplier tube supply
voltage and measurement start/stop can also be controlled from the PC.

Product Variations

Type No.

H7468
H7468-01
H7468-03
H7468-20

Spectral Response Features

300 nm to 650 nm
300 nm to 850 nm
185 nm to 650 nm
300 nm to 900 nm

For visible range
For visible to near IR range
For UV to visible range
High sensitivity in near IR range

Specifications

Parameter

Suffix
Input Voltage (Vcc)
Max. Input Voltage
Max. Input Current
Effective Area
Digital Output: Maximum Output Current
Digital Output: Maximum Sink Current
Voltage between Digital Input and GND
Peak Sensitivity Wavelength

Luminous Sensitivity
Cathode
Sensitivity

Gain *

Anode Dark Current

Integration Capacitance
AD Converter Resolution
Integration Time
Dead Time
Sampling
Time
Measurement Count (fixed set reading)
PMT Supply Voltage
Digital High-Level Input Voltage
Digital Low-Level Input Voltage
Digital High-Level Output Voltage
Digital Low-Level Output Voltage
RS-232C Interface Setting
Operating Ambient Temperature
Storage Temperature
Weight

*1: Measured at the peak sensitivity wavelength *2: PMT supply voltage: 800 V
*3: After 30 minute storage in darkness

36

Blue Sensitivity Index (CS 5-58)

Red/White Ratio

Radiant Sensitivity *

2

2, *3

*

Continuous Reading

Fixed Set Reading

Min.
Ty p.

1

Ty p.
Ty p.
Max.

Min.
Max.
Min.
Max.

None

420

40
70

8.0
—
62

7.0 × 10

5

0.2

2

RS-232C, 9600 baud, Parity none, 8 data bits, 1 stop bit

5.0 × 10

H7468

-01
+4.75 to +5.25

+6
35

8

25
25

-0.3 to Vcc +0.3

400

80

150

—

0.2
60

5

0.4

4

1000

12

0.04 to 500 (0.01 step)

0.01 to 500 (0.01 step)
4 to 1000

0.05 to 1000
1 to 127

0 to 1000

4
1

Vcc -0.7

0.6

+5 to +50

-20 to +50
105

-03

420

40
70

8.0
—
62

7.0 × 10

0.2

2

Unit

-20

630
350
500

—

0.45

5

78

5.0 × 10
2

20

5

—

V
V

mA

mm

mA
mA

V

nm

A/lm

—
—

mA/W

—

nA

pF

bit
ms
ms
ms
ms

—

V
V
V
V
V

—

°C
°C

g

Photosensor Module with CPU/IF

Characteristics (Cathode radiant sensitivity, PMT gain)

TPHOB0053EA TPHOB0054EA

100

7

10

6

10

10

H7468

H7468-03

1

CATHODE RADIANT SENSITIVITY (mA/W)

0.1
100 200 300 400 500 600 700 800 900 1000

H7468-01

H7468-20

WAVELENGTH (nm)

Connection Diagram

SUPPLY

VOLTAGE

GND

+5 V

H7468

POWER CABLE

RS-232C CROSS CABLE

BLACK RED

WHITE
BLUE
GREEN

: User Line (TTL Output)
: External Trigger (TTL Input)
: NC

Block Diagram

INTEGRATION TIME SETTING

SERIAL PORT

5

10

4

10

PMT GAIN

3

10

2

10

1

10

PC

100 200

PMT SUPPLY VOLTAGE (V)

R7468/-03

TPHOC0051EA

R7468-01/-20

400 600 800

1000

PMT

K

MULTISTAGE VOLTAGE

RECTIFIER CIRCUIT

HIGH VOLTAGE

FEEDBACK

OSCILLATOR

CIRCUIT

STABILIZING

CIRCUIT

P

VOLTAGE
CONTROL

1000 pF

–

+

CHARGE
AMP

12 BIT

DAC

12 BIT

ADC

ADC
CONTROL

DAC
CONTROL

DAC DATA

ADC DATA

MICRO

CONTROLLER

Dimensional Outlines (Unit: mm)

35.0 ± 0.5 35.0 ± 0.20.5

4-M2 DEPTH: 4

14.0 ± 0.2

14.0 ± 0.2

50.0 ± 0.5
25

EFFECTIVE AREA ( 8 MIN.)

POWER CABLE (SUPPLIED)

6-PIN PLUG HIROSE HR10A-7P-6S

RS-232C CROSS CABLE (SUPPLIED)

40.0 ± 0.2

11

9.4

450 ± 20

60.0 ± 0.5

WINDOW

PHOTOCATHODE

4-M3 DEPTH: 4

SIDE VIEWFRONT VIEW REAR VIEW

BLACK
RED
WHITE
BLUE
GREEN
SHIELD: GND

1500

Vcc (+5 V)

GND

Rx

RS-232C

Tx

INTERFACE

GND

External Trigger (TTL Input)
User Line (TTL Output)

POWER INPUT CONNECTOR
HIROSE HR10A-7R-6P

35

13

: GND
: Vcc (+5 V)
: User Line (TTL Output)
: External Trigger (TTL Input)
: NC

TPHOC0046EB

1: GND
2: Vcc +5 V
3: User Line (TTL Output)
4: External Trigger
(TTL Input)
5: NC
6: NC

RS-232C
9PIN D-sub

Option

(Optical Fiber Adapter) (Unit: mm)

E5776 (FC Type)

E5776-51 (SMA Type)

4-M2

22.0 ± 0.5

14.0 ± 0.2

22.0 ± 0.5

14.0 ± 0.2

FC-R

8.5 3.5 ± 0.2

SIDE VIEWFRONT VIEW

10.7 5.0

TACCA0055EA

TPHOA0029EB

4-M2

SMA

3.0

SIDE VIEWFRONT VIEW

TACCA0239EA

37