Overview
The AD808-622BRRL7 is a fiber optic receiver integrated circuit designed by Analog Devices Inc. This device provides comprehensive receiver functions, including data quantization, signal level detection, clock recovery, and data retiming. It is specifically tailored for 622 Mbps Non-Return-to-Zero (NRZ) data transmission, making it suitable for high-speed fiber optic communication systems such as SONET OC-12 and SDH STM-4 networks.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Voltage Range | @ PIN or NIN | 2.5 VS | V | ||
| Input Sensitivity (VSENSE) | PIN-NIN, Figure 1, BER = ≤ 1 × 10–10 | 4.0 | mV | ||
| Input Overdrive (VOD) | Figure 1, BER = ≤ 1 × 10–10 | 5 | 2.0 | mV | |
| Input Offset Voltage | 1.0 | mV | |||
| Input Current | 10 | µA | |||
| Input RMS Noise | BER = ≤ 1 × 10–10 | 100 | µV | ||
| Upper -3 dB Bandwidth | 600 | 800 | MHz | ||
| Input Resistance | 10 | kΩ | |||
| Input Capacitance | 2 | pF | |||
| Pulsewidth Distortion | 50 | ps | |||
| Level Detect Range | RTHRESH = 22.1 kΩ | 6.5 | 10 | 13.5 | mV |
| Response Time (DC Coupled) | 0.1 | 1.5 | µs | ||
| Hysteresis (Electrical) | RTHRESH = 22.1 kΩ | 5 | 9.0 | dB | |
| SDOUT Output Logic High | Load = +3.2 mA | 4.0 | 4.7 | V | |
| SDOUT Output Logic Low | Load = –3.2 mA | 0.2 | 0.4 | V | |
| NOMINAL CENTER FREQUENCY | 622.08 | MHz | |||
| CAPTURE RANGE | 620 | 624 | MHz | ||
| TRACKING RANGE | 620 | 624 | MHz | ||
| STATIC PHASE ERROR | 27–1 PRN Sequence | 22 | 81 | Degrees | |
| SETUP TIME (tSU) | Figure 2 | 550 | 900 | ps | |
| HOLD TIME (tH) | Figure 2 | 700 | 1050 | ps | |
| PHASE DRIFT | 240 Bits, No Transitions | 50 | Degrees | ||
| JITTER | 27–1 PRN Sequence | 2.5 | 3.6 | Degrees rms | |
| Operating Temperature | -40 | 85 | °C | ||
| Package | 16-Lead Narrow 150 mil SOIC |
Key Features
- Meets CCITT G.958 Requirements for STM-4 and Bellcore TR-NWT-000253 Requirements for OC-12.
- 622 Mbps Clock Recovery and Data Retiming with Phase-Locked Loop (PLL) type clock recovery, no crystal required.
- Accepts NRZ data without the need for a preamble.
- Quantizer sensitivity of 4 mV and programmable level detect range from 10 mV to 40 mV.
- Single supply operation at +5 V or -5.2 V with low power consumption of 400 mW.
- ECL/PECL compatible outputs.
- Signal level detect circuit with 3 dB optical hysteresis to prevent chatter at the signal level detect output.
- Factory trimmed VCO center frequency and frequency acquisition control loop to ensure frequency acquisition without false lock.
Applications
The AD808-622BRRL7 is designed for use in high-speed fiber optic communication systems, particularly in SONET OC-12 and SDH STM-4 networks. It can be integrated with a PIN diode/preamplifier combination to form a highly integrated, low-cost, and low-power fiber optic receiver. This device is suitable for applications requiring reliable data quantization, signal level detection, clock recovery, and data retiming in high-speed optical communication systems.
Q & A
- What is the primary function of the AD808-622BRRL7?
The AD808-622BRRL7 provides receiver functions including data quantization, signal level detection, clock recovery, and data retiming for 622 Mbps NRZ data.
- What are the key standards that the AD808-622BRRL7 complies with?
The device meets CCITT G.958 Requirements for STM-4 and Bellcore TR-NWT-000253 Requirements for OC-12.
- Does the AD808-622BRRL7 require a preamble for data input?
No, the AD808-622BRRL7 accepts NRZ data without the need for a preamble.
- What is the quantizer sensitivity of the AD808-622BRRL7?
The quantizer sensitivity is 4 mV.
- What is the level detect range of the AD808-622BRRL7?
The level detect range is programmable from 10 mV to 40 mV.
- What is the power supply requirement for the AD808-622BRRL7?
The device operates on a single supply of +5 V or -5.2 V.
- What is the power consumption of the AD808-622BRRL7?
The device consumes 400 mW of power.
- What type of output is provided by the AD808-622BRRL7?
The device provides ECL/PECL compatible outputs.
- What is the package type of the AD808-622BRRL7?
The device is packaged in a 16-Lead Narrow 150 mil SOIC.
- What is the operating temperature range of the AD808-622BRRL7?
The operating temperature range is from -40°C to 85°C.
