ISL43231
Low-Voltage, Single and Dual Supply, Triple SPDT Analog Switch

Key Features

• Specified at 3.3V, 5V, ±5V, and 12V Supplies for 10% Tolerances
• ON-resistance (R_ON) Max, V_S = ±4.5V: 50Ω
• ON-resistance (R_ON), V_S = +3V: 135Ω
• R_ON Matching Between Channels, V_S = ±5V: <2Ω
• Low Charge Injection, V_S = ±5V: 0.3pC
• Single Supply Operation: +2V to +12V
• Dual Supply Operation: ±2V to ±6V
• Fast Switching Action (V_S = +5V)
• t_ON: 38ns
• t_OFF: 19ns
• Guaranteed Max Off-leakage: 2.5nA
• Break-Before-Make
• TTL, CMOS Compatible
• Pb-Free (RoHS Compliant)

Description

The Intersil ISL43231 device is a precision, bidirectional, analog switch configured as a a triple single pole/double throw (SPDT) switch, designed to operate from a single +2V to +12V supply or from a ±2V to ±6V supply. The device has an inhibit and inhibit bar pin to simultaneously open all signal paths. The device also has a latch bar pin to lock in the last switch address.

ON-resistance of 39Ω with a ±5V supply and 125Ω with a +3.3V supply. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 2.5nA at +85°C.

All digital inputs have 0.8V to 2.4V logic thresholds, ensuring TTL/CMOS logic compatibility when using a single +3.3V or +5V supply or dual ±5V supplies.

The ISL43231 is a committed triple SPDT, which is perfect for use in 2-to-1 multiplexer applications.

Applications

• Battery Powered, Handheld, and Portable Equipment
• Communications Systems - Radios
• Telecom Infrastructure
• ADSL, VDSL Modems
• Test Equipment
• Medical Ultrasound
• Magnetic Resonance Image
• CT and PET Scanners (MRI)
• ATE
• Electrocardiograph
• Audio and Video Signal Routing
• Various Circuits
• +3V/+5V DACs and ADCs
• Sample and Hold Circuits
• Operational Amplifier Gain Switching Networks
• High Frequency Analog Switching
• High Speed Multiplexing
• Integrator Reset Circuits