PHY1075 ,125Mbps to 4.25Gbps Laser Driver/Postamp with Digital Diagnosticsapplications. • Temperature compensated modulation current The transmitter integrates a high speed ..
PHY1078-01QS-RR ,125Mbps to 2.5Gbps FTTx Burst-Mode Laser Driver/Postamplifierapplications. Used with the • 7ns output switching in Burst Mode PHY1095 or PHY1097 transimpedance ..
PHY1078-01QT-RR ,125Mbps to 2.5Gbps FTTx Burst-Mode Laser Driver/PostamplifierApplications threshold and hysteresis. • GEPON Operating with a 3.3V supply and rated from -40 to • ..
PHY2078 ,125Mbps to 2.5Gbps FTTx Burst-Mode Laser Driver/PostamplifierApplications threshold and hysteresis. • GPON Operating with a 3.3V supply and rated from -40 to • ..
PHY2078QT-RR ,125Mbps to 2.5Gbps FTTx Burst-Mode Laser Driver/Postamplifierapplications. Used with the • 7ns output switching in Burst Mode PHY1095 or PHY1097 transimpedance ..
PI2DBS412ZHE , 1.8V, 1.8GHz, Differential Broadband Signal Switch,4-Differential Channel, 2:1 Mux/DeMux Switch,w/ Single Enable
PLUS153BN ,Programmable logic arrays 18 ?42 ?10
PLUS153BN ,Programmable logic arrays 18 ?42 ?10
PLUS153BN ,Programmable logic arrays 18 ?42 ?10
PLUS16L8-7A , PAL devices
PLUS16L8-7A , PAL devices
PLUS16R4-7N , PAL devices
PHY1075
125Mbps to 4.25Gbps Laser Driver/Postamp with Digital Diagnostics
125Mbps – 4.25Gbps Laser Driver / Post amp with Digital Diagnostics
Features • Multi-rate from 125Mbps to 4.25Gbps • Laser driver output stage with 70mA max
modulation drive and 100mA bias current • Programmable mean power control loop • Temperature compensated modulation current • Integrated limiting amplifier with selectable
swing CML output • Programmable receiver low pass filter • Integrated Loss Of Signal function • Digital diagnostic mode compliant with SFF-
8472 using an external MCU • Stand-alone mode where device parameters
are loaded from an external EEPROM • -40°C to +95°C ambient operating range • 36pin 6mm x 6mm QFN package • Eye safety logic
Applications • Fibre Channel 1x, 2x, 4x • OC-3, OC-12, OC-48 • Gigabit Ethernet, SONET/SDH
Low Pass
Filter
RXOUT+
RXOUT-
RXIN+
RXIN-
TXIN+
TXIN-
LASER+
LASER-
TX_DISABLE
LOS
LASER BIAS
TX_FAULTMPD
Internal
Registers
& 2 Wire I/F
SCL
SDASA_SCL
Safety
Logic
SA_SDA
Mean Power
Control Loop
ModulationTemperature
Comp
TSENSE
Driver
O/P
Level
Detect
Ref
RSSI
Ref
Voltage
Reg
MUX
SHUTDOWN
Description The PHY1075-01 is a combined Laser driver and
limiting amplifier with support for Digital Diagnostic
Monitoring for use within small form factor
modules for Fibre Channel, GbE and SONET/SDH
applications.
The transmitter integrates a high speed output
stage with programmable bias and modulation
currents, controlled through a 2-wire serial
interface. The mean power control loop allows
connection in common anode configuration.
A Loss Of Signal (LOS) detector is included with
detection based on either the receiver photo
detector average current or received signal
modulation amplitude.
When used in digital diagnostics mode the
integrated A/D converters measuring temperature,
TX Bias, Supply Voltage, RX Signal Strength and
Mean Power are read via a 2-wire serial interface.
An external Microcontroller Unit (MCU) is used for
calibrating real time diagnostic monitors and alarm
generation.
36QFN
SA_SDA1
RESET
VSS_RX
RXOUT+
RXOUT-
SDA
RREF
VDD_TX
LASER-
VSS_TX
VSS_TX
VDD_TXO
LASER_BIAS
SA_SCL
VDD_RXO
VDD_RXVSS_RX
RXIN+RXIN-LOSSHUTDOWNTSENSERSSI
TX_FAULT
TX_DISABLE
TXIN+
TXIN-
VSS_TX
RATESEL
VSS_TX
MPD
SCL
VGG
LASER+
VDD_TX1836
PHY1075-01
A Maxim Integrated Products Brand 19-5683; Rev 4/12
Table of Contents 1. Ordering Information .................................................................................................................................... 3
2. Pin Description ............................................................................................................................................. 3
3. Key Specifications........................................................................................................................................ 5
3.1. Absolute Maximum Ratings ................................................................................................................ 5
3.2. Continuous Ratings ............................................................................................................................. 5
3.3. Receiver .............................................................................................................................................. 5
3.4. Transmitter .......................................................................................................................................... 7
3.5. 2-Wire Serial Interface ...................................................................................................................... 10
3.6. DC Characteristics:TX_FAULT; TX_DISABLE;LOS ......................................................................... 11
3.7. Typical Operating Characteristics ..................................................................................................... 11
4. Functional Description ............................................................................................................................... 12
4.1. Overview ........................................................................................................................................... 12
4.2. Receiver Features ............................................................................................................................. 12
4.3. Transmitter Features ......................................................................................................................... 16
4.4. Laser Safety Features ....................................................................................................................... 18
4.5. Tsense Temperature Sensor ............................................................................................................ 20
5. Control Interface ........................................................................................................................................ 21
5.1. Memory Map ..................................................................................................................................... 21
5.2. Operation........................................................................................................................................... 22
5.3. Digital Diagnostics Mode ................................................................................................................... 26
5.4. Stand-Alone Mode ............................................................................................................................ 28
5.5. 2-wire Serial Interface ....................................................................................................................... 30
6. Register Map .............................................................................................................................................. 32
7. Simplified Interface Models ........................................................................................................................ 41
8. Typical Applications ................................................................................................................................... 43
8.1. Power Supply Connections ............................................................................................................... 44
9. Packaging .................................................................................................................................................. 46
10. Contact Information.................................................................................................................................... 47
1. Ordering Information Please refer to the Packaging section for test and package location ordering code definitions.
Part Number Description Package PHY1075-01QD-RR Enhanced 4G LASER driver and Post
Amp
QFN36, 6mmx6mm in Tape and Reel;
RoHS-compliant (see Figure 37, p. 46)
PHY1075-01QS-RR
NOT FOR USE IN NEW DESIGNS Enhanced 4G LASER driver and Post
Amp
QFN36, 6mmx6mm in Tape and Reel;
RoHS-compliant (see Figure 37, p. 46)
2. Pin Description
Pin No Name Direction Type Description SA_SDA1,4 I/O LVTTL 2-wire serial interface. Connects to EEPROM in stand-alone mode RESET I/P CMOS Reset VDD_RXO2 Power Limiting amplifier output power supply VSS_RX3 Ground Receiver section ground connection RXOUT- O/P CML Limiting amplifier differential serial data output. RXOUT+ O/P CML Limiting amplifier differential serial data output. SDA4 I/O LVTTL 2-wire serial data interface. Used in Digital Diagnostics Mode. SCL4 I/P LVTTL 2-wire serial interface clock. Used in Digital Diagnostics Mode. RREF I/P Analog Connect to Ground through a 10k resistor
10 TX_FAULT O/P LVTTL
(open
collector)
Transmit fail alarm. A logic 1 indicates a fault in the transmission
system. Requires external pull up for SFP MSA compliance
11 TX_DISABLE4 I/P LVTTL Output disable (active high). Disables Laser drive. On chip 8k pull
up
12 VSS_TX3 Ground Transmission circuitry ground connection
13 TXIN+ I/P CML Differential Laser driver input from host
14 TXIN- I/P CML Differential Laser driver input from host
15 RATESEL I/P LVTTL Toggles between two low pass filter characteristics. External 30k
pull down resistor required for SFP MSA compliance
16 VSS_TX3 Ground Transmission circuitry ground connection
17 NC No connection. Leave open circuit
18 MPD I/P Analog Monitor photodiode input
19 LASER_BIAS O/P Analog Laser bias current output
20 VDD_TX2 Power Transmission circuitry power supply connection
21 VDD_TXO2 Power Transmission circuitry power supply connection
22 VSS_TX3 Ground Transmission circuitry ground connection
23 LASER- O/P High speed Laser differential driver output
24 LASER+ O/P High speed Laser differential driver output
25 VSS_TX3 Ground Transmission circuitry ground connection
26 VGG Ground Ground substrate connection
27 VDD_TX2 Power Transmission circuitry power supply connection
28 SHUTDOWN O/P CMOS Gate drive for optional Laser shutdown FET switch
29 TSENSE I/P Analog External temperature sensing transistor connection
30 RSSI I/P Analog Receive signal strength indicator & regulated supply for Rx
photodiode
31 LOS O/P LVTTL
(open
collector)
Loss of signal output. Requires external pull up for SFP MSA
compliance
32 RXIN+ I/P CML Limiting amplifier differential serial data input
33 RXIN- I/P CML Limiting amplifier differential serial data input
34 VSS_RX3 Ground Receiver ground connection
35 VDD_RX2 Power Limiting amp power supply
36 SA_SCL1,4 I/P LVTTL EEPROM 2-wire serial interface clock PADDLE Ground Ground / Thermal Paddle
1 Used in stand-alone mode only
2 All VDDs are internally connected by back-to-back protection diodes. VDDs should not be powered up independently.
3 All VSSs are internally connected to the IC substrate connection. 4 Internally pulled high with an 8kΩ pull-up resistor.
3. Key Specifications 3.1. Absolute Maximum Ratings
Parameter Conditions Min Typ Max Unit Supply Voltage -0.5 +6.5 V
Voltage on any pin VSS - 0.5 VDD + 0.5 V
Storage Temperature 150 °C
Soldering Temperature For 25 seconds 260 °C
Junction Temperature 140 °C
ESD Human Body Model JESD-22-A114-B 2 kV
Under absolute maximum rating conditions device not guaranteed to meet specifications; permanent
damage may be incurred by operating beyond these limits.
3.2. Continuous Ratings
Parameter Conditions Min Typ Max Unit Operating Supply Voltage Continuous operation 2.97 3.3 3.63 V
Current consumption Idd = Iddo + (Km*Imod) + (Kb*Ibias) mA
Current Consumption (Iddo)
High Swing, OMA LOS, Vref = 113
4250Mbps Filter
155Mbps Filter
118
110
mA
Current consumption (Km) Modulation multiplication constant 0.536
Current consumption (Kb) Bias multiplication constant 0.075
Operating temperature Ambient Still Air, Max Bias and Modulation
Current -40 25 +95 °C
3.3. Receiver
3.3.1. Receive Limiting Amplifier
Parameter Symbol Conditions Min Typ Max Unit Sensitivity Differential, BER=1*10-12 <2.125Gbps
<4.25Gbps 5
6.5
7.5
10 mVpp
Max Differential Input Overshoot and TJ within spec 1200 mVpp
Input Return Loss Differential, f<4GHz, device powered on 10 dB
Output Return Loss Differential, f<4GHz, device powered on 10 dB
Low Frequency Cutoff High pass 3dB point for RX system 15 kHz
Differential Output
Swing High swing mode
Low swing mode 800
400 1100
520 mVpp
Total Jitter, Tj Measured over RX input voltage range 100 mUI pp
Duty Cycle Distortion 125Mbps – 4.25Gbps 40 60 %
Output Resistance RXOUT+/- Single ended to VDD_RXO 40 50 60 Ω
