19-5677; Rev 1/11
A Maxim Integrated Products Brand
PHY1040-01
Description
The PHY1040-01 is a continuous mode
VCSEL/Laser driver and limiting amplifier for use
within fiber optic modules for SFP and SFF
applications. Used with the PHY1092-01 or
PHY1095-01 transimpedance amplifiers and a low
cost serial EEPROM or microcontroller it forms a
complete SFP module solution.
The transmit section integrates a modulator output
stage optimised as a LASER or VCSEL driver in
common anode configurations.
The bias current can be controlled either by a fast
settling APC loop or in open loop mode which
uses a temperature lookup table.
The receiver includes a limiting amplifier with
programmable bandwidth. A Signal Detect/Loss Of
Signal function is implemented using the input
signal modulation amplitude with user selectable
threshold and hysteresis.
Operating with a 3.3V supply and rated from -40 to
+95°C ambient, the PHY1040-01 is housed in a
32pin, 5x5mm, RoHS compliant, QFN package.
125Mbps – 1.25Gbps VCSEL/Laser Driver and Postamplifier
Features
•
Common anode VCSEL driver output stage
•
•
•
•
•
with 32mA max modulation drive and 20mA
bias current.
Continuous mode LASER driver with up to
80mA modulation and 90mA bias current
Closed or open loop bias mode with
temperature lookup table
Temperature compensated modulation current
Limiting amplifier with programmable low pass
filter and output swing
Device settings stored in external 2k EEPROM
Applications
•
Fast Ethernet
•
Gigabit Ethernet
•
OC-3
Figure 1 – Block diagram
Figure 2 – Device pin out
PHY1040-AD-1.0
Advance Datasheet
Page 1
Contents
1.
2.
3.
Ordering Information ................................................................................................................... 3
Pin description............................................................................................................................. 3
Key Specifications ....................................................................................................................... 5
3.1.
Absolute Maximum Ratings................................................................................................. 5
3.2.
Continuous Ratings ............................................................................................................. 5
3.3.
Transmitter .......................................................................................................................... 5
3.4.
Receiver .............................................................................................................................. 8
3.5.
2-Wire Serial Interface....................................................................................................... 12
4. Functional Description............................................................................................................... 14
4.1.
Overview ........................................................................................................................... 14
4.2.
Transmitter features .......................................................................................................... 14
4.3.
Receiver Features ............................................................................................................. 21
4.4.
Laser/VCSEL Safety Features .......................................................................................... 23
4.5.
Temperature Measurement ............................................................................................... 26
5. Control Interface........................................................................................................................ 27
5.1.
Boot Sequence .................................................................................................................. 28
5.2.
Main Control Loop ............................................................................................................. 30
5.3.
2-wire Serial Interface ....................................................................................................... 31
6. Register Map ............................................................................................................................. 33
7. Simplified Interface Models ....................................................................................................... 45
8. Applications Information ............................................................................................................ 47
8.1.
Power Supply Connections ............................................................................................... 47
8.2.
VCSEL/Laser Connection – DC-Coupled.......................................................................... 48
8.3.
VCSEL/Laser Connection – AC-Coupled .......................................................................... 49
8.4.
TX_Fault Circuit – Standalone Mode ................................................................................ 50
9. Packaging ................................................................................................................................. 52
10. Contact Information ................................................................................................................... 53
PHY1040-AD-1.0
Advance Datasheet
Page 2
1.
Ordering Information
Part Number
PHY1040-01QS-RE
Description
VCSEL/LASER driver and Post Amp
Package
QFN32, 5mmx5mm in Tape and Reel
2.
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Pin description
Name
EEPROM_SDA
VDD_RXO
VSS_RXO
RXOUTM
RXOUTP
SDA
SCL
IC
TX_FAULT
TX_DISABLE
TXINP
TXINM
VSS_IC
NC
NC
MPD
LVBIAS
LVMODE
VDD_TXO
VSS_TXO
LVOUTM
LVOUTP
VSS_TXO
VDD_TXO
IC
SD/LOS
VSS_RX
O/P
LVTTL
(Open
Collector)
Ground
O/P
O/P
I/P
O/P
Analog
Analog
Analog
Power
Ground
High speed
Output
High speed
Output
Ground
Power
O/P
I/P
I/P
I/P
LVTTL
(Open
Collector)
LVTTL
High Speed
Input
High Speed
Input
O/P
O/P
I/O
I/O
Direction
I/O
Type
LVTTL
Power
Ground
CML
CML
LVTTL
LVTTL
Description
EEPROM 2 wire serial interface data, internal 8kΩ pull up
Receiver output power supply
Receiver output ground connection
Limiting amplifier serial data output
Limiting amplifier serial data output
2-wire serial interface data
2-wire serial interface clock
Internally connected, this pin must be left open circuit
Laser fail alarm (requires external pull up)
Laser enable / disable
Laser driver serial input, see section 7.0 for interfacing details
Laser driver serial input, see section 7.0 for interfacing details
Internal connection, connect to ground
No connection
No connection
Monitor photodiode input
Laser bias current output
Select VCSEL or Laser mode
Driver output power supply
Driver output ground connection
Laser/VCSEL driver serial output
Laser/VCSEL driver serial output
Driver output ground connection
Driver output power supply
Internally connected, this pin must be left open circuit
Signal Detect or Loss of signal output (requires external pull up). Polarity
selected by user
Receiver ground connection
PHY1040-AD-1.0
Advance Datasheet
Page 3
Pin No
28
29
30
31
32
EP
Name
RXINM
RXINP
VSS_RX
VDD_RX
EEPROM_SCL
VSS_EP
Direction
I/P
I/P
Type
CML
CML
Ground
Power
Description
Limiting amplifier serial data input
Limiting amplifier serial data input
Receiver ground connection
Receiver power supply
EEPROM 2-wire serial interface clock, internal 8kΩ pull up
Common ground / thermal pad
O/P
LVTTL
Ground
PHY1040-AD-1.0
Advance Datasheet
Page 4
3.
3.1.
Supply voltage
Key Specifications
Absolute Maximum Ratings
Parameter
Conditions
Min
-0.5V
-0.5
Typ
Max
6.5
VDD
+
0.5V
150
140
Unit
V
V
°C
°C
°C
kV
Voltage on any signal pin
Storage temperature
Max junction temperature
Max soldering temperature
ESD
IPC/JEDEC J-STD-020C
Human Body Model JESD-22-A114-B
260
2
Device not guaranteed to meet specifications, permanent damage may be incurred by operating beyond these limits.
3.2.
Continuous Ratings
Parameter
Conditions
Continuous operation
Excluding bias & modulation current
at 20mA bias & 20mA modulation
Ambient still air
-40
Min
2.97
Typ
3.3
120
25
Max
3.63
145
+95
Unit
V
mA
°C
Operating supply voltage
Current consumption
Operating temperature
3.3.
3.3.1.
Input Voltage
Input Swing
Transmitter
Transmitter Inputs: TXINP/M
Parameter
VILmin
VIHmax
Vpp(diff)
0.2www.jojwww
Conditions
Min
1.14
Typ
Max
VDD_TX
Unit
V
V
Vpp
Figure 3 – Valid combinations of transmitter input voltages
PHY1040-AD-1.0
Advance Datasheet
Page 5
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