MODULE
PSD signal processing circuit
C9068, C9069
Digital output for connection with PC
C9068 (for one-dimensional PSD) and C9069 (for pin-cushion type two-dimensional PSD) are DC signal processing circuits specifically
designed for position measurement using PSD. Digital output allows direct connection with a personal computer through a serial (RS-232C)
interface. C9068 and C9069 are capable of detecting accurate positions of a spot light regardless of light intensity.
A D/A conversion signal is also output for monitoring, and when a voltmeter is connected to this D/A conversion output, the output voltage value
directly represents position data. (Output voltage represents the distance from the center of PSD. 1 V=1 mm)
Features
Applications
l
Digital output
l
Serial (RS-232C) connection with PC
l
D/A conversion signal output for monitoring
l
Easy handling due to single +12 V supply operation
l
No complicated adjustment required
s
Absolute maximum ratings
Parameter
Supply voltage
Operating temperature *
1
Storage temperature *
1
*1: No condensation
Symbol
Vcc Max.
Topr
Tstg
l
Displacement measurement using PSD
l
Testing using PSD
l
PSD performance evaluation
Value
+18
0 to +40
-10 to +60
Unit
V
擄C
擄C
s
Electrical and optical characteristics (Ta=25
擄C,
Vcc=+12 V)
Parameter
Symbol
Min.
Typ.
Max.
Conversion impedance
Tz
-
1 脳 10
5
-
Feedback capacitance
Cf
-
100
-
-5
C9068
1 脳 10
-
9 脳 10
-5
I
IN
Input signal current *
2
C9069
1 脳 10
-5
-
9 脳 10
-5
Signal conversion time *
3
Tr
5
-
-
Digital output format
-
Conforms to RS -232C (position signal, light level m onitor output) 12-bit
D/A conversion output amplitude
Vo
-10
-
+10
Supply voltage
Vcc
+9
+12
+18
Current consumption
Icc
-
200
-
*2: Photocurrent Isc (total input signals) from PSD mounted on the C9068 or C9069 circuit board.
*3: Output response time versus spot light position change.
Unit
V/A
pF
A
A
ms
-
V
V
mA
s
Combination with PSD
The following PSDs can be used by soldering the PSD leads to the through-hole terminals on the circuit board.
NOTE) PSDs sold separately.
Compatible PSD
PSD
signal processing circuit
Type
Type No.
C9068
One-dimensional PSD
S3979 *
4
, S3931, S3932, S1352, S3270 *
4
C9069
Pin-cushion type two-dimensional PSD S1880, S1881 *
4
, S2044, S5990-01 *
5
, S5991-01 *
5
*4: These PSDs cannot be directly mounted on the circuit board. Connect to the through-hole terminals at the edge of the circuit
board by external wiring.
*5: An attachment board should be used.
PRELIMINARY DATA
Aug. 2002
1
1
2
