The ADN2812 provides the receiver functions of quantization, signal level detect, and clock and data recovery for continuous data rates from 12.3Mb/s to 2.7Gb/s. The ADN2812 automatically locks to all data rates without the need for an external reference clock or programming. All SONET jitter requirements are met, including jitter transfer, jitter generation, and jitter tolerance. All specifications are quoted for -40°C to +85°C ambient temperature, unless otherwise noted.
This device, together with PIN diode and TIA preamplifier, can implement highly integrated, low cost, low power fiber optic receiver.
The receiver front end, loss of signal (LOS) detector circuit indicates when the input signal level has fallen below user-adjustable threshold. The LOS detect circuit has hysteresis to prevent chatter at the output.
The ADN2812 is available in compact 5 x 5 mm 32-lead lead frame chip scale package (LFCSP).
- 12.3Mb/s to 2.7Gb/s serial data input
- 6mV typical quantizer sensitivity
- ±100 mV adjustable slice level
- Patented clock recovery architecture
- 3mV to 15mV loss of signal (LOS) detect range
- Independent slice level adjust and LOS detector
- No reference clock required
- Loss of lock indicator
- IC interface to access optional features
- 3.3V single-supply operation
- 750 mW typical Low power
- Exceeds SONET requirements for jitter transfer/ generation/tolerance
- Applications:
- SONET OC-1/OC-3/OC-12/OC-48 and all associated FEC rates
- Fibre Channel, 2× Fibre Channel, GbE, HDTV
- WDM transponders
- Regenerators/repeaters
- Test equipment
- Broadband cross-connects and routers
