MAX3822

Supply Voltage (V_CC) ........................................... -0.5V to +6.0V
Differential Input Voltage Swing (IN1+ - IN1-), (IN2+ - IN2-),
(IN3+ - IN3-), (IN4+ - IN4-) .................................................2Vp-p
Voltage at LOP1,LOP2, LOP3,
LOP4, LOP, CS..............................................-0.5V to (VCC + 0.5V)
Voltage at IN1+, IN1-, IN2+, IN2-, IN3+,
IN3-, IN4+, IN4- ...................................(V_CC - 1V) to (VCC + 0.5V)
Voltage at VTH ......................................................+0.5V to +2.3V
Voltage at CZ1+, CZ1-, CZ2+, CZ2-,
CZ3+, CZ3-, CZ4+, CZ4- ..............................-0.5V to (V_CC + 0.5V)
Current into OUT1+, OUT1-, OUT2+, OUT2-,
OUT3+, OUT3-, OUT4+, OUT4-, .........................................±22mA
Continuous Power Dissipation (T_A = +85°C)
48-Pin TQFP-EP (derate 29.4mW/°C above +85°C) .........2.35W
Operating Junction Temperature Range(die) ...-55°C to +150°C
Processing Temperature (die) .........................................+400°C
Storage Temperature Range ...........................-55°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX3822 quad limiting amplifier is ideal for multichannel systems with data rates up to 2.5Gbps. The MAX3822 operates from a single +3.3V supply, over temperatures ranging from 0°C to +85°C. A channelselect (CS) pin is provided to program single-, dual-, or quad-channel operation. The disabled channels are shut down to reduce power consumption. The output interface for all four channels is CML.

The input of MAX3822 can be driven from 20mVp-p to 1000mVp-p differentially. The threshold voltage control is common for all four channels and is programmable by an external resistor. 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 of MAX3822 is also provided which asserts low if one or more of the four inputs is in the LOP condition.