Overview
The AD808-622BRZ, produced by Analog Devices Inc., is a highly integrated fiber optic receiver IC designed for 622 Mbps NRZ data applications. This device combines the functions of data quantization, signal level detection, clock recovery, and data retiming, making it suitable for SONET OC-12 or SDH STM-4 fiber optic systems. It operates in conjunction with a PIN diode/preamplifier combination to provide a low-cost, low-power solution.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Voltage Range | @ PIN or NIN | 2.5 | 4.0 | V | |
| Input Sensitivity | VSENSE PIN–NIN, BER = ≤ 1 × 10–10 | 10 | 4.0 | mV | |
| Input Overdrive | BER = ≤ 1 × 10–10 | 5 | 2.0 | mV | |
| Input Offset Voltage | 1.0 | mV | |||
| Input Current | 10 | µA | |||
| Upper –3 dB Bandwidth | 600 | 800 | MHz | ||
| Input Resistance | 10 | kΩ | |||
| Input Capacitance | 2 | pF | |||
| Power Supply Voltage | 4.5 | 5.5 | V | ||
| Power Supply Current | VCC = 5.0 V, VEE = GND, TA = +25°C | 55 | 100 | mA | |
| Operating Temperature | -40 | 85 | °C |
Key Features
- Data Quantization and Retiming: The AD808 quantizes the input signal and retimes the data to ensure accurate data recovery.
- Signal Level Detection: The device includes a level detect function to monitor the input signal level.
- Clock Recovery: It features a phase-locked loop (PLL) for clock recovery, with a nominal center frequency of 622.08 MHz and a capture range of 620 MHz to 624 MHz.
- Low Power Consumption: Operates with a power supply current of 55 mA to 100 mA at 5 V, making it a low-power solution.
- High Integration: Designed to work with a PIN diode/preamplifier combination for a highly integrated fiber optic receiver system.
- PECL Output: Provides PECL (Pseudo-Emitter-Coupled Logic) output voltage levels for compatibility with various systems.
Applications
- SONET OC-12 and SDH STM-4 Systems: Ideal for use in SONET OC-12 and SDH STM-4 fiber optic communication systems.
- Fiber Optic Receivers: Suitable for applications requiring high-speed data recovery and retiming in fiber optic receivers.
- Telecommunication Equipment: Used in various telecommunication equipment where high-speed data transmission and recovery are critical.
Q & A
- What is the primary function of the AD808-622BRZ?
The primary function of the AD808-622BRZ is to provide receiver functions including data quantization, signal level detection, clock recovery, and data retiming for 622 Mbps NRZ data.
- What is the typical input sensitivity of the AD808-622BRZ?
The typical input sensitivity is 10 mV to 4.0 mV at BER = ≤ 1 × 10–10.
- What is the power supply voltage range for the AD808-622BRZ?
The power supply voltage range is from 4.5 V to 5.5 V.
- What is the operating temperature range of the AD808-622BRZ?
The operating temperature range is from -40°C to 85°C.
- What type of output logic does the AD808-622BRZ provide?
The AD808-622BRZ provides PECL (Pseudo-Emitter-Coupled Logic) output voltage levels.
- What is the nominal center frequency of the PLL in the AD808-622BRZ?
The nominal center frequency of the PLL is 622.08 MHz.
- Is the AD808-622BRZ suitable for SONET OC-12 systems?
Yes, the AD808-622BRZ is suitable for use in SONET OC-12 and SDH STM-4 fiber optic communication systems.
- What is the typical power supply current of the AD808-622BRZ?
The typical power supply current is between 55 mA to 100 mA at 5 V.
- Does the AD808-622BRZ have a level detect function?
Yes, the AD808-622BRZ includes a level detect function to monitor the input signal level.
- What is the package type of the AD808-622BRZ?
The AD808-622BRZ is packaged in a 16-Lead SOIC (Small Outline IC) package.
- Is the AD808-622BRZ RoHS compliant?
Yes, the AD808-622BRZ is lead-free and RoHS compliant).
