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Texas Instruments AMC60304 Optical Monitor & Controller

Texas Instruments AMC60304 Optical Monitor and Controller is a highly integrated, low-power analog monitor and controller optimized for high-current outputs. The device includes four 12-bit current output digital-to-analog converters (IDACs), a 12-bit, 1MSPS analog-to-digital converter (ADC), supply and temperature alarm monitors, and a high-precision internal reference. The AMC60304 IDACs support a full-scale output range of 200mA with very-low power dissipation. These IDACs eliminate the need for external components to provide an accurate current bias.

The Texas Instruments AMC60304 includes four input pins that are multiplexed to the ADC and incorporate a low-latency window comparator. These features make this device an excellent choice for received signal strength indicator (RSSI) and loss-of-signal (LOS) detection. The ADC can also measure the voltage at the IDAC pins, thus enabling these outputs to be monitored. The AMC60304 low power, high integration, very small size, and wide operating temperature range make this device an excellent choice for optical modules as an all-in-one control circuit.

Features

  • Four 12-bit current output DACs (IDACs)
    • 200mA full-scale output range
  • Multichannel, 12-bit, 1MSPS SAR ADC
    • Four external inputs (2.5V and 5V input ranges)
    • Four IDAC voltage monitor channels
    • Programmable sequencer
    • Programmable out-of-range alarms
  • Internal 2.5V reference
  • Supply and temperature fault alarms
  • SPI and I2C interfaces: 1.7V to 3.6V operation
    • SPI: 4-wire interface
    • I2C: Four target addresses
  • –40°C to +125°C specified temperature range

Applications

  • Optical module
  • Intra-dc interconnect (metro)

Simplified Schematic

Schematic - Texas Instruments AMC60304 Optical Monitor & Controller

Texas Instruments AMC60304 Optical Monitor & Controller