Optical controller with four 200mA current DACs, four voltage-output DACs and multichannel ADC

The AMC6V704 is

a highly integrated, low-power analog monitor and controller for optical-transceiver

applications.

The AMC6V704

includes four, 12-bit current-output digital-to-analog converters (IDACs) and four, 12-bit

voltage-output DACs (VDACs) with programmable output ranges. The device also includes a

12-bit, 1MSPS analog-to-digital converter (ADC) used for external and internal signal

monitoring, supply and temperature alarm monitors, and a high-precision internal

reference.

The AMC6V704

VDACs support both positive and negative output-range operation and are capable or sourcing

and sinking up to 50mA, making them an excellent choice for biasing optical modulators.

Additionally, the AMC6V704 IDACs support a full-scale output

range of 200mA with very-low power dissipation. The IDACs eliminate the need for external

components to bias laser diodes. In combination, the AMC6V704

four VDACs and four IDACs enable accurate biasing of electro-absorption modulated

lasers.

The AMC6V704

also 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 is also capable of

measuring the voltage at the IDAC pins, as well as the current sourced or sunk by the VDACs,

thus enabling these outputs to be monitored.

The AMC6V704

low-power, high-integration, very small size, and wide operating temperature range make this

device an excellent choice as an all-in-one control circuit for optical modules.