Analog Devices Inc./Maxim Integrated

The MAX3969 is a recommended upgrade for the MAX3964 and MAX3968. The MAX3964A limiting amplifier, with 2mVP-Pinput sensitivity and PECL data outputs, is ideal for low-cost ATM, FDDI, and Fast Ethernet fiber optic applications.The MAX3964A features an integrated power detector that senses the input-signal power. It provides a received-signal-strength indicator (RSSI), which is an analog indication of the power level and complementary PECL loss-of-signal (LOS) outputs, which indicate when the power level drops below a programmable threshold. The threshold can be adjusted to detect signal amplitudes as low as 2.7mVP-P. An optional squelch function disables switching of the data outputs by holding them at a known state during an LOS condition.The MAX3968 provides the same functionality as the MAX3964A, but has data-output edge speed suitable for ESCON and 266Mbps fibre channel applications.The MAX3964A/MAX3968 are available in die form, as tested wafers, and in 20-pin QSOP packages. The MAX3964AETP is available in a 20-pin thin QFN package.Applications125Mbps FDDI Receivers155Mbps FTTx Receivers155Mbps LAN ATM ReceiversESCON ReceiversFast Ethernet Receivers

The MAX398/MAX399 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less than 100Ω), which is matched to within 6Ω between channels and remains flat over the specified analog signal range (11Ω max). They also offer low leakage over temperature (NO off-leakage current less than 2.5nA at +85°C) and fast switching speeds (transition time less than 250ns). The MAX398 is an 8-channel device, and the MAX399 is a dual 4-channel device.The MAX398/MAX399 are fabricated with Maxim's low-voltage silicon-gate process. Design improvements yield extremely low charge injection (less than 5pC) and guarantee electrostatic discharge protection (ESD) greater than 2000V.These muxes operate with a single +3V to +15V supply or bipolar ±3V to ±8V supplies, while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading. The MAX398/MAX399 are pin compatible with the industry-standard DG408, DG409, DG508A, and DG509A.ApplicationsAudio-Signal RoutingAutomated Test Equipment (ATE)Battery-Powered ApplicationsCommunication SystemsGuidance and Control SystemsHeads-Up DisplaysLow-Voltage Data AcquisitionMilitary RadiosPBX, PABXSample-and-Hold Circuits