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MAX9271 Compact Serializer


Maxim's MAX9271 compact serializer for camera applications


Maxim - MAX9271 Compact SerializerMaxim's MAX9271 compact serializer is designed to drive 50 Ω coaxial or 100 Ω shielded twisted-pair (STP) cable. The device pairs with the MAX9272 deserializer.

The parallel input is programmable for single or double input. Double input allows higher pixel clock-input frequency by registering two pixels of typical image-sensor video data before serializing. This doubles the maximum pixel clock frequency compared to a single input.

The device features an embedded control channel that operates at 9.6 kbps to 1 Mbps in UART and mixed UART/I²C modes, and up to 400 kbps in I²C mode. Using the control channel, a microcontroller (µC) is capable of programming serializer, deserializer, and camera (or any peripheral) registers at any time, independent of video timing. There is one dedicated GPIO, four optional GPIOs, and a GPO output, allowing remote power-up of a camera module, camera frame synchronization, and other uses. Error-detection and correction coding are programmable.

For driving longer cables, the device has programmable pre/de-emphasis. Programmable spread-spectrum is available on the serial output. The serial output meets ISO 10605 and IEC 61000-4-2 ESD standards. The core supply range is 1.7 V to 1.9 V and the I/O supply range is 1.7 V to 3.6 V. The device is available in a 32-pin (5 mm × 5 mm) TQFN-EP package with 0.5 mm lead pitch and operates over the -40°C to +105°C temperature range.

Key Features
  • Ideal for camera applications
    • Drives low-cost 50 Ω coaxial cable and FAKRA connectors or 100 Ω STP
    • Error detection/correction
    • 9.6 kbps to 1 Mbps control channel in I²C-to-I²C mode with clock stretch capability
    • Best-in-class supply current: 75 mA (max)
    • Double-rate clock for megapixel cameras
    • Serializer pre/de-emphasis allows up to 15 m cable lengths at full speed
    • 32-pin (5 mm × 5 mm) TQFN package with 0.5 mm lead pitch
  • High-speed data serialization for megapixel cameras
    • Up to 1.5 Gbps serial-bit rate with single or double input: 6.25 MHz to 100 MHz clock
  • Multiple control-channel modes for system flexibility
    • 9.6 kbps to 1 Mbps control channel in UART-to-UART or UART-to-I²C modes
  • Reduces EMI and shielding requirements
    • Output programmable for 100 mV to 500 mV single-ended or 100 mV to 400 mV differential
    • Programmable spread spectrum on the serial output reduces EMI
    • Bypassable input PLL for parallel clock jitter attenuation
    • Tracks spread spectrum on parallel input
  • Peripheral features for camera power-up and verification
    • Built-in PRBS generator for BER testing of the serial link
    • Up to five GPIO ports
    • Dedicated "Up/Down" GPO for camera frame sync trigger and other uses
    • Remote/Local wake-up from sleep mode
  • Meets rigorous automotive and industrial requirements
    • -40°C to +105°C operating temperature
    • ±8 kV contact and ±15 kV Air ISO 10605 and IEC 61000-4-2 ESD protection

Digi-Key P/N Manufacturer P/N Description  
MAX9271GTJ+-ND MAX9271GTJ+ IC SERIALIZER 16BIT GMSL 32TQFN Datasheet
MAX9272GTM+-ND MAX9272GTM+ IC DSERIALIZER 28BIT GMSL 48TQFN Datasheet