• 简体中文
• English

MAX3761：Low-Power, 622Mbps Limiting Amplifiers with Chatter-Free Power Detect for LANs

Generates Only 15ps PWD and Has 4mV Input Sensitivity

The MAX3761/MAX3762 limiting amplifiers, with 4mV sensitivity and PECL data outputs, are optimized for operation in low-cost, 622Mbps, LAN/ATM LAN fiber optics applications. An integrated power detector senses the input signal's amplitude. A received-signal-strength indicator (RSSI) gives an analog indication of the power level, while the complementary loss-of-signal (LOS) outputs indicate if the input power level exceeds the programmed threshold level. The LOS threshold can be adjusted to detect signal amplitudes between 3mVP-P and 100mVP-P, providing a 15dB LOS adjustment in fiber optic receivers. The LOS outputs have 3.5dB of hysteresis, which prevents chatter when input signal levels are small. The MAX3761's LOS outputs are compatible with TTL-logic levels. The MAX3762 has PECL LOS outputs. DISABLE and LOS can be used to implement a squelch function, which turns off the data outputs when the input signal is below the programmed threshold.

Key Features Chatter-Free Power Detector with Programmable Loss-of-Signal Outputs 4mV Input Sensitivity PECL Data Outputs Single 5V Power Supply 250ps Output Edge Speed Low 15ps Pulse-Width Distortion TTL Loss-of-Signal Interface Logic—MAX3761 PECL Loss-of-Signal Interface Logic—MAX3762

MAX3761, MAX3762: Typical Operating Circuit Applications/Uses 155Mbps LAN/ATM LAN Receivers 622Mbps LAN/ATM LAN Receivers

DataSheet

Parametrics

Design kits & evaluation modules

• MAX3761EVKIT
• MAX3762EVKIT

Quality and Environmental Data

• MAX3761.pdf

Related Products

• MAX3658：622Mbps, Low-Noise, High-Gain Transimpedance Preamplifier
• MAX3766：622Mbps LAN/WAN Laser Driver with Automatic Power Control and Safety Shutdown

Ordering Information