Low-Voltage, High-Isolation, Dual 2-Channel RF Video Multiplexer

The MAX4589 low-voltage, dual 2-channel multiplexer is designed for RF and video signal processing at frequencies up to 200MHz in 50Ω and 75Ω systems. On-chip functions are controlled through either a parallel interface or an SPI™/QSPI™/MICROWIRE™ serial interface.

Each channel of the MAX4589 is designed using a "T" switch configuration, ensuring excellent high-frequency off-isolation. The MAX4589 has low on-resistance of 60Ω max, with an on-resistance match across all channels of 4Ω max. Additionally, on-resistance is flat across the specified signal range (2Ω max). The off-leakage current is under 1nA at TA = +25°C, and less than 10nA at TA = +85°C.

The MAX4589 operates from single +2.7V to +12V or dual ±2.7V to ±6V supplies. When operating with a positive supply of +5V, the inputs maintain TTL/CMOS- level compatibility. The MAX4589 is available in 20-pin DIP, wide SO, and SSOP packages.

Applications

* Automated Test Equipment (ATE) * High-Speed Data Acquisition * Networking * RF Switching * Video Signal Routing

* Low Insertion Loss: < -2.5dB up to 100MHz

* High Off-Isolation: -74dB at 10MHz

* Low Crosstalk: < -70dB up to 10MHz

* 20MHz -0.1dB Signal Bandwidth

* 200MHz -3dB Signal Bandwidth

* 60Ω (max) On-Resistance with ±5V Supplies

* 4Ω (max) On-Resistance Matching with ±5V Supplies

* 2Ω (max) On-Resistance Flatness with ±5V Supplies

* +2.7V to +12V Single-Supply Operation

* ±2.7V to ±6V Dual-Supply Operation

* Low Power Consumption: < 20µW

* Rail-to-Rail, Bidirectional Signal Handling

* Parallel or SPI/QSPI/MICROWIRE-Compatible Serial Interface

* > ±2kV ESD Protection per Method 3015.7

* TTL/CMOS-Compatible Inputs with VL = +5V