NEW QUAD +3.3V, 2.5Gbps LIMITING AMPLIFIER PROVIDES LOW DETERMINISTIC AND RANDOM JITTER WITH MINIMAL POWER CONSUMPTION
SUNNYVALE, CA-November 6, 2001-Maxim Integrated Products introduces the MAX3822 +3.3V, 2.5Gbps quad limiting amplifier for optical system interconnects. Maxim’s second-generation, in-house bipolar process technology enables low-jitter performance and low power consumption at low cost. The MAX3822 is designed to couple directly to the MAX3825 transimpedance amplifier without any external data path components between the two products. Combining the MAX3822 (limiting amplifier) and the MAX3825 (transimpedance amplifier) produces a high-performance 2R quad 2.5Gbps receiver. This provides a maximum throughput of 10Gbps, ideal for 4-channel parallel 2.5Gbps optical interconnections in SDH/SONET, Gigabit Ethernet, and Fibre-Channel systems.
The MAX3822 consumes a total of 700mW, but can be configured in a single, dual, or quad application, thus conserving power budgets on unused channels. Four separate power detectors are incorporated to monitor the received signal level for each channel. Individual, TTL-compatible, loss-of-power (LOP) indicators assert low if the channel signal input is below the programmed threshold. Typically, 4dB LOP hysteresis (2dB optical) is provided to prevent chattering when the input signal level is close to the threshold. A general LOP indicator is also provided, which asserts low if one or more of the four inputs is in the LOP condition. The output structure is back terminated to 100 differentially and is capable of 640mVp-p to 1000mVp-p differential swing. The input structure is internally 50 terminated, allowing easy direct coupling to the MAX3825 transimpedance amplifier.
Available as package and dice over a 0°C to +85°C temperature range, the MAX3822U/D is priced at $13.20 and the MAX3825UCM is priced at $9.90 (1000-up, factory direct, FOB USA). Evaluation kits are available.
|
