I M A G E S E N S O R
Driver circuit for NMOS linear image sensor
C7885 series
Driver circuit for voltage-output type NMOS linear image sensor
C7885
C7885 series is a driver circuit specifically designed for the Hamamatsu voltage-output type NMOS linear image sensors (S3921 to S3924
series). NMOS linear image sensors are self-scanning photodiode arrays integrated with a scanning circuit of N-channel MOS transistors.
C7885 series supplies start pulses, 2-phase clock pulses and reset pulses necessary for voltage-output type image sensor operation. C7885
series also includes a signal processing circuit that inverts and amplifies video signals from an image sensor. C7885 series operates by input of a
master start pulse, master clock pulse and connection to a power supply (+12 V or +15 V).
C7885-20 is multichannel detector head incorporating driver circuit (C7885) developed for Hamamatsu NMOS linear image sensor. C7885-20 is
designed especially for compactness, having an overall length as short as 40 mm or less. The housing case also provides a shielding effect
against external noise. As useful options, peripheral devices are available for driving C7885-20, and for the output signal processing.
Features
Suitable for voltage-output type image sensors
Compact (compared to conventional type C4074)
Single power supply (+12 V or +15 V) operation
ꢀ Selection guide
Type No.
Product name
Driver circuit
Feature
High-speed driver circuit for voltage-output type NMOS
linear image sensors.
C7885
Has no input/output connector.
A dedicated pulse generator is pre-mounted on the driver
circuit board.
Has no input/output connector.
C7885G
Driver circuit + Pulse generator
Multichannel detector head
C7885-20
Note)
C7885 driver circuit board is installed in a shield case.
1: Standard input/output connector is FAP-16-07#2 (made by Yamaichi, sold separately). Equivalent connectors are available
from other manufacturers.
2: Custom products with an input/output connector pre-mounted are available on request. Please consult our sales office.
3: When ordering along with a dedicated cable (A8226), C7885 will be shipped with a mating connector pre-mounted.
4: We welcome custom requests. Feel free to contact our sales office.
5: When using current-output type NMOS linear image sensors, refer to C7883/C7884 series data sheets.
ꢀ Specifications (Ta=25 °C)
Parameter
Supply
Symbol
Condition
voltage
Min.
+Vs+11.5
Typ.
+12.0
30
60
30
-
6
Max.
+15.5
40
80
40
Unit
V
C7885
C7885G
C7885-20
+12 V
+12 V
+12 V
-
-
-
-
-
mA
mA
mA
kHz
V/pC
°C
Current
consumption
+Is
Operation frequency
Gain
-
G
Master clock frequency: 3 MHz
500
-
Operating temperature
Storage temperature
Topr
Tstg
0 to +50 *
-10 to +60 *
°C
* No condensation
1