MAXIM New Products - MAX3797 & MAX9276，MAX9280
2013-04-15
MAX3797
10.3Gbps, Low-Power Transimpedance Amplifier for 10GBASE-SR Applications
Only 105mW Power Consumption While Supporting Fast RSSI
Description
The MAX3797 is a low-power transimpedance amplifier designed for optical transmission systems at data rates up to 10.3125Gbps and for use with PIN diodes.
The MAX3797 incorporates an automatic gain control (AGC) architecture providing nominal small-signal transimpedance of 5.5kΩ. The input-referred noise is typically 1.25µARMS, which reflects a theoretical sensitivity of -14.8dBm OMA at a bit error rate (BER) of 10-12 for a PIN (þ = 0.55, re = 3) photo detector.
The small die size of 1mm x 0.76mm enables an optical subassembly using a TO-46 or TO-56 package. The MAX3797 supports low-cost ROSAs by offering stable operation with no capacitors required in the ROSA. The MAX3797's sensitivity is stable over temperature and supply.
The MAX3797 incorporates an automatic gain control (AGC) architecture providing nominal small-signal transimpedance of 5.5kΩ. The input-referred noise is typically 1.25µARMS, which reflects a theoretical sensitivity of -14.8dBm OMA at a bit error rate (BER) of 10-12 for a PIN (þ = 0.55, re = 3) photo detector.
The small die size of 1mm x 0.76mm enables an optical subassembly using a TO-46 or TO-56 package. The MAX3797 supports low-cost ROSAs by offering stable operation with no capacitors required in the ROSA. The MAX3797's sensitivity is stable over temperature and supply.
Key Features
- Stable Sensitivity Over Supply and Temperature
- Up to 10.3125Gbps (NRZ) Operation
- Supports No-Capacitor ROSA
- AGC Gain of 5.5kΩ
- Single 3.3V Power Supply
- 105mW Power Consumption
- Wide Bandwidth Current Monitor Enables RSSI-Based LOS Implementation
- Die Size 1mm x 0.76mm
MAX9276, MAX9280
3.12Gbps GMSL Deserializers for Coax or STP Input and Parallel Output
Deserializers Enable Use of Coax Cables, Reducing Weight and Cost of Cabling in Automotive Infotainment
Description
The MAX9276/MAX9280 gigabit multimedia serial link (GMSL) deserializers receive data from a GMSL serializer over 50Ω coax or 100Ω shielded twisted pair (STP) cable and output deserialized data on the LVCMOS outputs.
The MAX9280 has HDCP content protection but otherwise is the same as the MAX9276. The deserializers pair with any GMSL serializer capable of coax output including the MAX9293 HDMI/MHL serializer. When programmed for STP input they are backward compatible with any GMSL serializer.
The audio channel supports L-PCM I²S stereo and up to eight channels of L-PCM in TDM mode. Sample rates of 32kHz to 192kHz are supported with sample depth up to 32 bits.
The embedded control channel operates at 9.6kbps to 1Mbps in UART-UART and UART-I²C modes, and up to 1Mbps in I²C-I²C mode. Using the control channel, a µC can program serializer, deserializer, and peripheral device registers at any time, independent of video timing, and manage HDCP operation (MAX9280). Two GPIO ports are included, allowing display power-up and switching of the backlight among other uses. A continuously-sampled GPI input supports touch-screen controller interrupt requests in display applications.
For use with longer cables, the deserializers have a programmable cable equalizer. Programmable spread spectrum is available on the parallel output. The serial input meets ISO 10605 and IEC 61000-4-2 ESD standards. The core supply is 3.0V to 3.6V and the I/O supply is 1.7V to 3.6V.
The MAX9280 has HDCP content protection but otherwise is the same as the MAX9276. The deserializers pair with any GMSL serializer capable of coax output including the MAX9293 HDMI/MHL serializer. When programmed for STP input they are backward compatible with any GMSL serializer.
The audio channel supports L-PCM I²S stereo and up to eight channels of L-PCM in TDM mode. Sample rates of 32kHz to 192kHz are supported with sample depth up to 32 bits.
The embedded control channel operates at 9.6kbps to 1Mbps in UART-UART and UART-I²C modes, and up to 1Mbps in I²C-I²C mode. Using the control channel, a µC can program serializer, deserializer, and peripheral device registers at any time, independent of video timing, and manage HDCP operation (MAX9280). Two GPIO ports are included, allowing display power-up and switching of the backlight among other uses. A continuously-sampled GPI input supports touch-screen controller interrupt requests in display applications.
For use with longer cables, the deserializers have a programmable cable equalizer. Programmable spread spectrum is available on the parallel output. The serial input meets ISO 10605 and IEC 61000-4-2 ESD standards. The core supply is 3.0V to 3.6V and the I/O supply is 1.7V to 3.6V.
Key Features
-
Ideal for High-Definition Video Applications
- Works with Low-Cost 50Ω Coax Cable and FAKRA Connectors or 100Ω STP
- 104MHz High-Bandwidth Mode Supports 1920x720p/60Hz Display With 24-Bit Color
- Equalization Allows 15m Cable at Full Speed
- Up to 192kHz Sample Rate And 32-Bit Sample Depth For 7.1 Channel HD Audio
- Audio Clock from Audio Source or Audio Sink
- Color Lookup-Table for Gamma Correction
- CNTL[3:0] Control Outputs
-
Multiple Data Rates for System Flexibility
- Up to 3.12Gbps Serial-Bit Rate
- 6.25MHz to 104MHz Pixel Clock
- 9.6kbps to 1Mbps Control Channel in UART, Mixed UART/I²C, or I²C Mode with Clock Stretch Capability
-
Reduces EMI and Shielding Requirements
- Programmable Spread Spectrum Reduces EMI
- Tracks Spread Spectrum on Input
- High-Immunity Mode for Maximum Control-Channel Noise Rejection
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Peripheral Features for System Power-Up and Verification
- Built-In PRBS Tester for BER Testing of the Serial Link
- Programmable Choice of 8 Default Device Addresses
- Two Dedicated GPIO Ports
- Dedicated “Up/Down” GPI for Touch-Screen Interrupt and Other Uses
- Remote/Local Wake-Up from Sleep Mode
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Meets Rigorous Automotive and Industrial Requirements
- -40°C to +105°C Operating Temperature
- ±8kV Contact and ±15kV Air ISO 10605 and IEC 61000-4-2 ESD Protection
