Overview
The ADN2812ACPZ-RL, produced by Analog Devices Inc., is a highly integrated clock and data recovery IC designed for fiber optic receivers. This device supports continuous data rates from 12.3 Mb/s to 2.7 Gb/s, making it suitable for various high-speed data transmission applications. It automatically locks to all data rates without the need for an external reference clock or programming, and it meets all SONET jitter requirements, including jitter transfer, jitter generation, and jitter tolerance.
The ADN2812 can be used in conjunction with a PIN diode and a TIA preamplifier to implement a low-cost, low-power fiber optic receiver. The device features a loss of signal (LOS) detector circuit with adjustable threshold and hysteresis to prevent output chatter. It operates on a single 3.3V supply and is packaged in a compact 5 mm × 5 mm 32-lead lead frame chip scale package (LFCSP).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Data Rate | 12.3 Mb/s | - | 2.7 Gb/s | - |
| Power Supply Voltage | 3.0 V | 3.3 V | 3.6 V | V |
| Power Supply Current | 235 mA | 259 mA | - | mA |
| Operating Temperature Range | -40°C | - | +85°C | °C |
| Package Type | - | 32-Lead LFCSP (5mm x 5mm) | - | - |
| Input CML Frequency | - | - | 2.7 GHz | GHz |
| LOS Detect Range | 3 mV | - | 15 mV | mV |
Key Features
- Automatic locking to data rates from 12.3 Mb/s to 2.7 Gb/s without external reference clock or programming.
- Meets all SONET jitter requirements for jitter transfer, generation, and tolerance.
- Integrated limiting amplifier and quantizer.
- Adjustable slice level and loss of signal (LOS) detector with hysteresis.
- No reference clock required.
- Loss of lock indicator and I2C interface for optional features.
- Single-supply operation at 3.3V and low power consumption of 750 mW typical.
- Compact 5 mm × 5 mm 32-lead LFCSP package.
Applications
- SONET OC-1/OC-3/OC-12/OC-48 and associated FEC rates.
- Fibre Channel, 2× Fibre Channel, Gigabit Ethernet (GbE).
- HDTV and WDM transponders.
- Regenerators/repeaters.
- Test equipment.
- Broadband cross-connects and routers.
Q & A
- What is the data rate range supported by the ADN2812?
The ADN2812 supports continuous data rates from 12.3 Mb/s to 2.7 Gb/s.
- Does the ADN2812 require an external reference clock?
No, the ADN2812 automatically locks to all data rates without the need for an external reference clock or programming.
- What are the key features of the ADN2812's jitter performance?
The ADN2812 meets all SONET jitter requirements, including jitter transfer, jitter generation, and jitter tolerance.
- How does the ADN2812 handle loss of signal detection?
The ADN2812 features a loss of signal (LOS) detector circuit with an adjustable threshold and hysteresis to prevent output chatter.
- What is the power supply voltage and current for the ADN2812?
The ADN2812 operates on a single 3.3V supply and consumes approximately 259 mA of current.
- What is the operating temperature range of the ADN2812?
The ADN2812 operates within an ambient temperature range of -40°C to +85°C.
- What package type is the ADN2812 available in?
The ADN2812 is available in a 32-lead lead frame chip scale package (LFCSP) with dimensions of 5 mm × 5 mm.
- What are some common applications of the ADN2812?
The ADN2812 is used in SONET, Fibre Channel, Gigabit Ethernet, HDTV, WDM transponders, regenerators/repeaters, test equipment, and broadband cross-connects and routers.
- Does the ADN2812 have any additional interfaces for configuration?
Yes, the ADN2812 includes an I2C interface to access optional features.
- Is the ADN2812 RoHS compliant?
Yes, the ADN2812 is lead-free and RoHS compliant.
