C4674-01 Datasheet, PDF (2/5 Pages) Hamamatsu Corporation – Signal processing circuit for 2-D PSD

Signal processing circuit for 2-D PSD
C4674-01
Specifications (Ta=25 °C, Vcc=±15 V)
Parameter
Symbol Condition
Min.
Typ.
Max.
Unit
Head amp conversion impedance
H range
-
Rf *² M range
-
1 × 10⁶
1 × 10⁵
-
-
V/A
L range
-
1 × 10⁴
-
Head amp feedback capacitance
H range
-
10
-
Cf *² M range
-
100
-
pF
L range
-
1000
-
Input signal current
H range
1 × 10^-6
-
1 × 10^-5
IIN *³ M range
1 × 10^-5
-
1 × 10^-4
A
Rise time
L range
1 × 10^-4
-
1 × 10^-3
Tr *⁴
-
22
30
μs
Head amp
High
Output voltage
differential output
Low
(V1 ,V2)
Output noise voltage
Output offset voltage
VOH
VOL
Vn *⁵
Vos *⁵
+13.5
-
-
-5
+13.8
-13.8
2
-
-
-13.5
-
+5
V
mVp-p
mV
Rise time
Tr *⁴
-
22
30
μs
High
Sum signal output ^{Output voltage}
(V3)
Low
Output noise voltage
VOH
VOL
Vn *⁵
+13.5
-
-
+13.8
0
2
-
V
-
-
mVp-p
Output offset voltage
Vos *⁵
-5
-
+5
mV
Rise time
Tr *⁴
-
22
30
μs
Maximum output
Position signal out- _{amplitude voltage}
Vo
Factory setup
prior to shipping*⁶
±6.8
±7
±7.2
V
put (V4, V5)
Output noise voltage
Vn *⁵
-
5
-
mVp-p
Output offset voltage
Vos *⁵
-70
-
+70
mV
PSD reverse bias voltage
Supply voltage
Current consumption
VR
Factory setup
prior to shipping*⁷
+4.9
+5
+5.1
V
Vcc *⁸
±14.5
±15
±15.5
V
Icc *⁵
-
±15
-
mA
*2: Factory setup prior to shipping is M range. The range can be switched with the jumper on the board.
*3: Photocurrent Isc with PSD installed (total input signal). PSD does not operate correctly if the input signal current is outside the
specified range.
*4: Output response time 10 to 90%
*5: With no PSD installed. Current signal that substitutes for PSD photocurrent (L range: X1=X2=Y1=Y2=200 μA, M range:
X1=X2=Y1=Y2=20 μA, H range: X1=X2=Y1=Y2=2 μA) is input. When maximum output amplitude voltage Vo=±7 V is set.
*6: Factory setup prior to shipping is ±7 V. Maximum output amplitude can be adjusted in a range of ±2 to ±10 V with a variable resistor
on the board according to the PSD type to be used.
*7: Factory setup prior to shipping is +5 V. The voltage can be adjusted in the range of 0 to +14 V with a variable resistor on the
board.
*8: Switching power supplies are not supported. Use a series power supply (with 3 mVp-p or less ripple voltage).
Combination with a PSD
A PSD is installed (soldered) on the signal processing circuit.
Note: PSDs are sold separately.
Type no.
S1880
S2044
S5990-01
S5991-01
Photosensitive
area size
(mm)
12 × 12
4.7 × 4.7
4×4
9×9
Package
(mm)
Ceramic (φ28)
Metal (TO-8 φ14)
Ceramic chip carrier
(8.8 × 10.6)
Ceramic chip carrier
(14.5 × 16.5)
Installation on
board
○
○
×
Using dedicated
board
×
×
○
×
○
External
attachment
○
○
○
○
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