AnalogChips Inc.
ACRX531
Fiber Optic Receiver
Features
High speed signal transmission
(12.5Mbps, NRZ signal)
Operating voltage : 4.5 to 5.5 V
Directly connectable to demodulation IC
for digital audio equipment
Outline Dimensions
Package
[Pin Connection]
Vcc
GND
Out
(Unit : mm)
Applications
Housing
AC-3 amp
PC-sound card
MD player
Ordering Information
Part Number
ACRX531D
ACRX531P
ACRX531H
Type
Die
Package
Housing
Absolute Maximum Ratings
(Ta=25 )
PARAMETER
Supply Voltage
High Level Output Current
Low Level Output Current
Operating Temperature
Storage Temperature
Soldering Temperature
[1]
SYMBOL
Vcc
I
OH
I
OL
T
opr
T
stg
T
sol
RATING
-0.5 ~ +7
4
4
-20 ~ +70
-30 ~ +80
260
UNIT
V
mA
mA
Note [
1
] : Soldering time=5 seconds 2 times or less
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AnalogChips Inc.
Electrical and Optical Characteristics
(Vdd=5V, Ta=25
)
PARAMETER
Operating Voltage
Peak Sensitivity Wavelength
Maximum Input Optical Power for Receiving Unit
Minimum Input Optical Power for Receiving Unit
Dissipation Current
High Level Output Voltage
Low Level Output Voltage
Rise Time
Fall Time
Low
High
High Propagation Delay Time
Low Propagation Delay Time
SYMBOL CONDITIONS
Vcc
-
p
ACRX531
MIN
4.5
-
-14.5
-
-
2.7
-
-
-
-
-
-30
-
0.1
-
TYP.
5
700
-
-
5
4.8
0.1
6
6
-
-
-
1
-
-
MAX
5.5
-
-
-24
8
-
0.4
30
30
100
100
+30
30
12.5
10
UNIT
V
nm
dBm
dBm
mA
V
V
ns
ns
ns
ns
ns
ns
Mbps
m
-
Refer to Fig.1
Refer to Fig.1
Refer to Fig.2
Refet to Fig.3
Refer to Fig.3
Refer to Fig.3
Refer to Fig.3
Refer to Fig.3
Refer to Fig.3
Refer to Fig.3
Refer to Fig.4
, Pc=-15dBm
-
-
P
CMAX
P
CMIN
Icc
V
OH
V
OL
tr
tf
t
pLH
t
pHL
tw
tj
T
-
Pulse Width Distortion
Jitter
Operating Transfer Rate
Transmission Distance
Fig.1 Maximum Input Optical Power Level/Minimum Input Optical Power Level
Measuring Method of Receiving Unit
Standard
transmitter
Variable optical
attenuator
ACRX531
Note : (1) Optical power meter must be calibrated to have
the wavelength sensitivity of 660nm.
Optical power meter
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AnalogChips Inc.
ACRX531
Fig.2 Measuring Method of Dissipation Current
Standard optical fiber cable
Standard
transmitter
ACRX531
D
V
IN
Input
V
CC
GND
V
CC
Vcc=5.0 0.05V
V
CC
GND
V
CC
A
V
OUT
6Mbps NRZ, duty 50%
or 3Mbps biphase PRBS signal
Ammeter
(DC average current value)
Fig.3 Measuring Method of Output Voltage and Pulse
Standard optical fiber cable
Standard
transmitter
ACRX531
V
CC
V
IN
V
CC
GND
V
CC
Vcc=5.0 0.05V
Oscilloscope
CH1
D
GND
V
CC
V
OUT
R
SO
R
SI
Input
6Mbps NRZ, duty50%
Standard
transmitter
Input signal
(CH1)
V
OH
CH2
50%
t
r
t
f
90%
50%
ACRX531
output signal
(CH2)
Notes (1) Vcc=5.0 0.05V(Operating)
(2) The probe for the oscilloscope must be
more than 1M and less than 10pF.
(3) Rsi, Rso : Standard load resistance
(Rsi:3.3K , Rso:2.2K
V
OL
t
PLH
t
PHL
10%
tw(Pulse width distortion) = t
PHL
- t
PLH
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AnalogChips Inc.
ACRX531
Fig.4 Measuring Method of Jitter
Standard optical fiber cable
Standard
transmitter
ACRX531
V
CC
V
IN
V
CC
GND
V
CC
Vcc=5.0 0.05V
CH1
D
GND
V
CC
V
OUT
R
SO
R
SI
Oscilloscope
Trigger:CH1
Storage mode
Sweep:AUTO/NORM
Input
Input signal 3Mbps
biphase PRBS
1 1
0
0
CH2
Input Signal
50%
ACRX531
output
50%
tj
tj
Notes (1) Rsi Rso : standard load resistance
(Rsi:3.3K Rso:2.2K
(2) Vcc=5.0 0.05V(Operating)
(3)Set the oscilloscope to be storage mode and
write time to 3 seconds. Do not allow the
waveform to be distorted by increasing the
brightness too much..
(4)The probe for oscilloscope must be more
than 1M and less than 10pF.
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