The MAX4545/MAX4546/MAX4547 are low-voltage T-switches designed for switching RF and video signals from DC to 300MHz in 50Ω and 75Ω systems. The MAX4545 contains four normally open single-pole/single-throw (SPST) switches. The MAX4546 contains two dual SPST switches (one normally open, one normally closed.) The MAX4547 contains two single-pole/double-throw (SPDT) switches.
Each switch is constructed in a "T"configuration, ensuring excellent high-frequency off isolation and crosstalk of -80dB at 10MHz. They can handle rail-to-rail analog signals in either direction. On-resistance (20Ω max) is matched between switches to 1Ω max and is flat (0.5Ω max) over the specified signal range, using ±5V supplies. The off leakage current is less than 5nA at +25°C and 50nA at +85°C.
These CMOS switches can operate with dual power supplies ranging from ±2.7V to ±6V or a single supply between +2.7V and +12V. All digital inputs have 0.8V/2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±5V or a single +5V supply.
关键特性
应用/使用
Low 50Ω Insertion Loss: -1dB at 100MHz
High 50Ω Off Isolation: -80dB at 10MHz
Low 50Ω Crosstalk: -80dB at 10MHz
DC to 300MHz -3dB Signal Bandwidth
20Ω Signal Paths with ±5V Supplies
1Ω Signal-Path Matching with ±5V Supplies
0.5Ω Signal-Path Flatness with ±5V Supplies
±2.7V to ±6V Dual Supplies
+2.7V to +12V Single Supply
Low Power Consumption: < 1µW
Rail-to-Rail Bidirectional Signal Handling
Pin Compatible with Industry-Standard DG540, DG542, DG643
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
下载
