Data sheet DZA-VVIR-HM0 pages

Preamplifier Electronics for
Hamamatsu InGaAs Photodiode Arrays
G9205...G9208 / G9211...G9214
In der Au 27
61440 Oberursel / Germany

DZA-VVIR-HM

Phone: +49 (0) 6171 / 9758 – 0
Fax: +49 (0) 6171 / 9758 – 50
E-Mail: sales@tec5.com
Internet: www.tec5.com

Product ID: 0106252.22
Document: ds_dza-vvir-hm_102e.doc

The pixel frequency of a 256 element array equals 1/8
of the CLK frequency – the frequency of a 512 array
1/4. The readout time is derived from the numbers of
pixels N as:
treadout = ((N x p) + 8) / fCLK,
with p = 8 (256 pixels) or 4 (512 pixels). The preamplifier board switches automatically between ‚odd’ and
‚even’ pixels. After the output of all pixel signals an
EndOfScan pulse is generated by the board. With this
EOS signal, the integration period starts simultaneously
for all pixels and ends with the next START pulse. The
complete measurement cycle duration is equal to the
integration time plus the readout time.

Technical Data
Diode array:

Short Description
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Compact preamplifier electronics for
Hamamatsu InGaAs photodiode arrays
of series G9205 to G9214
Direct positioning of PCB on sensor chip
Device input: sensor chip
Device output: Front End Electronics with sensor
interface ‚Sensor_U1’ (FEE-1M /NIR-x, FEE-NIR)
PCB dimensions: 72 mm x 55 mm
Connector for temperature controller

General
The preamplifier electronics DZA-VVIR-HM serves as
an interfacing component between the Hamamatsu
InGaAs photodiode arrays of series G9205 to G9214
and the Front End Electronics board of a tec5 operating
electronics. Typically, the photodiode array is plugged
into the connector DIL-28 on the soldering side of the
PCB.
The interface to the Front End Electronics complies to
the tec5 specification ‚Sensor_U1’ (MICS-14, MICS-4
and SMB socket with pin contact, video signal ‚differential’).
A Peltier cooler control electronics can access the preamplifier via a MICS-6 connector.

Hamamatsu InGaAs Linear Image Sensors, Type G9205 to G9208,
G9211 to G9214 or compatibles
Number of pixels:
256 or 512
CLK frequency:
max. 4 MHz
Readout time:
0.514 ms at 4 MHz CLK
Min. integration time:
0.1 ms
Analog Range:
Output signal:
Total gain:

± 0 ... 3 V
1.4

Digital Input Control Signals (AHC level):
START:
Start of readout cycle, if signal 'START'
is High and 'CLK' has a falling slope.
CLK:
Clock signal for the array. The pixel
frequency is 1/4 (512 elements) and 1/8
(256 elements) of the CLK frequency
Digital Output Control Signals (AHC level):
TRIGGER
Signal for reading out the video signal,
read with the rising slope
/EOS:
EndOfScan, Signal /EOS is High during
readout procedure. After the final pixel
is read, a Low pulse is generated for
the time the CLK signal is high. This indicates the end of the array.
Signal Behavior:

Features

STAR
T

The preamplifier board generates - based on the CLK
and START signals - all signals necessary to read out a
sensor chip. The analog signals from the sensor array
are primed and are provided differentially for further
processing (Video signal). The sampling point of time is
indicated by the rising slope of the TRIGGER signal.

CLK
2
EO S
T R IG
G e rG
V ID E
O

For further information see Hamamatsu datasheet.