SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Product Features
 1310nm burst-mode transmitter with DFB laser
 1490nm continuous-mode receiver with APD-TIA
 Compliant to ITU-T G.984.5 Specifications
 SFF package with SC receptacle form
 Single +3.3V power supply
 Low power dissipation <1W
 Digital diagnostic interface compliant with SFF-8472
Applications

Gigabit-capable Passive Optical Networks (GPON)
General
ATOP’s APGPU34LxxS20 Small Form Factor (SFF) transceivers are compatible with the Small
Form Factor Multi-Sourcing Agreement (MSA). The transceivers are single fiber bi-directional data
links with symmetric 1.25Gbps upstream and 2.5Gbps downstream. They are RoHS compliant and
lead-free.
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Rev1.0
2014-07
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Product Selection
Part Number
Operating temperature
DDMI
APGPU34LCXS20
Commercial
No
APGPU34LCDS20
Commercial
Yes
APGPU34LIXS20
Industrial
No
APGPU34LIDS20
Industrial
Yes
Regulatory Compliance

ESD to the Electrical PINs: compatible with MIL-STD-883 Method 3015

ESD to the Duplex LC Receptacle: compatible with IEC 61000-4-2

Immunity compatible with IEC 61000-4-3

EMI compatible with FCC Part 15 Class B EN55022 Class B (CISPR 22B) VCCI Class B

Laser Eye Safety compatible with FDA 21CFR 1040.10 and 1040.11 EN60950, EN (IEC)
60825-1,2

RoHs compliant with 2002/95/EC 4.1&4.2 2005/747/EC
Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
NC
2
VeeR
Receiver Signal Ground.
1
3
VeeR
Receiver Signal Ground.
1
4
NC
No Function Definition.
5
NC
No Function Definition.
6
VeeR
Receiver Signal Ground.
7
VccR
Receiver Power Supply.
8
SD
Receiver Signal-Detected Indication.
9
RD-
Inverted Receiver Data Output.
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No Function Definition.
Rev1.0
2014-07
1
2
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
10
RD+
Non-inverted Receiver Data Output.
2
11
VccT
Transmitter Power Supply.
12
VeeT
Transmitter Signal Ground.
1
13
TX_Burst
Transmitter Burst Mode Control.
3
14
TD+
Non-inverted Transmitter Data Input.
2
15
TD-
Inverted Transmitter Data Input.
2
16
VeeT
Transmitter Signal Ground.
1
17
SCL
The clock line of two wire serial interface.
4
18
SDA
The data line of two wire serial interface.
4
19
TX_Fault
20
TX_SD
Transmitter Inverted DATA in. AC Coupled.
Transmitter State Indication.
5
Mounting Studs.
6
FS
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. LVPECL logic output，AC coupled.
3. Low level enable optical signal output.
4. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V.
5. TX_SD Assert When Transmitter ON；LVTTL logic output.
6. Connected to chassis round，not to signal ground.
Pin assignment
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Rev1.0
2014-07
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Burst Mode Sequence
Timing parameter definition in burst mode sequence：
Recommend Circuit Schematic
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Rev1.0
2014-07
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Notes：
1 、When input stages of SerDes IC with high impedance and internal bias to Vcc-1.3V ，
R1=R2=R3=R4=OPEN，R5=100；
2、When input stages of SerDes IC without internal bias toVcc-1.3V，R1=R2=82，R3=R4=130，
R5=OPEN
Absolute Maximum Ratings
Parameter
Symbol
Min
Maximum Supply Voltage
Vcc
Storage Temperature
Operating Humidity
Typ
Max
Unit
-0.5
+4.0
V
TS
-40
+85
°C
RH
5
95
%
Ref.
Recommended Operating Conditions
Parameter
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Symbol
Min
Rev1.0
Typ
2014-07
Max
Unit
Ref.
Page 5
SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Power Supply Voltage
Vcc
3.13
3.30
3.47
V
Power Supply Current
Icc
-
-
300
mA
Tc
0
-
+70
1
Case Operating Temperature
°C
TI
-40
-
+85
2
Data Rate(TX)
-
-
1.244
-
Gbps
Data Rate(RX)
-
-
2.488
-
Gbps
Notes:
1. For commercial class product.
2. For industrial class product.
Electrical Characteristics (TOP=25°C, Vcc=3.3Volts)
Parameter
Transmitter
Input differential impedance
Single ended data input swing
TX Ben-High
TX Ben-Low
TX Fault-High
TX Fault-Low
Receiver
Single ended data output swing
Data output rise time
Data output fall time
SD-High
SD-Low
Symbol
Min
Typ
Max
Unit
Ref.
Rin
Vin, pp
-
400
Vcc – 1.3
Vee
Vcc-0.5
Vee
100
-
1600
Vcc
Vee+ 0.8
Vcc
Vee+0.5
Ω
mV
V
V
V
V
1
Vout, pp
tr
tf
-
400
Vcc – 0.5
Vee
1600
175
175
Vcc
Vee+0.5
mV
ps
ps
V
V
2
3
3
-
Notes:
1. AC coupled.
2. Into 100 ohm differential termination.
3. 20 – 80 %
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Optical Characteristics (TOP=25°C, Vcc=3.3 Volts)
Parameter
Transmitter
Optical Output Power
Optical Wavelength
Spectral Width(-20dB)
Optical Rise/Fall Time
Burst Turn On/Off Time
Optical Extinction Ratio
Receiver
RX Sensitivity @1.25 Gb/s
Receiver Overload
Optical Center Wavelength
Signal Detect-Assert
Signal Detect-Deassert
Signal Detect-Hysteresis
Symbol
Min
Typ
Max
Unit
Ref.
Po
λ
Δλ
tr/tf
Ton/Toff
ER
0.5
1290
-
1310
-
dBm
nm
nm
ps
ns
dB
1
10
5
1330
1
260
12.8
-
SENS
-8
1480
-45
0.5
1490
-
-28
1500
-29
6
dBm
dBm
nm
dBm
dBm
dB
3, 4
λC
SDA
SDD
-
2
Notes:
1. Class 1 Laser Safety.
2. Unfiltered, 20-80%. Complies with Gigabit Ethernet eye masks when filtered.
23
3. Measured with PRBS 2 -1 at 10
-12
BER.
Mechanical Specifications
ATOP’s Small Form Factor (SFF) transceivers are compatible with the dimensions defined by the
SFF Multi-Sourcing Agreement (MSA).
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Rev1.0
2014-07
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
APGPU34LxxS20
EEPROM Information
EEPROM memory map specific data field description is as below:
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Rev1.0
2014-07
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
Digital Diagnostic Monitoring Interface
Five transceiver parameter values are monitored. The following table defines the monitored
parameter’s accuracy.
Parameter
Range
Accuracy
Calibration
±3°C
Internal
2.97 to 3.63V
±3%
Internal
Bias Current
0 to 100mA
±10%
Internal
TX Power
0.5 to 5dBm
±3dB
Internal
RX Power
-28 to -8dBm
±3dB
Internal
0 to +70°C (C)
Temperature
-40 to +85°C (I)
Voltage
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Rev1.0
2014-07
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SC Receptacle GPON ONU SFF Optical Transceiver
APGPU34LxxS20
For More Information
ATOP Corporation
Tel: +86-755-86674946
Fax: +86-755-86296723
Email: sales@atoptechnology.com
Web: www.atoptechnology.com
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Rev1.0
2014-07
Page 10