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    Parts    TMUX1109RSVR
TMUX1109RSVR

TITMUX1109RSVR

Texas Instruments
2 Circuit IC Switch 4:1 4Ohm 16-UQFN (2.6x1.8)
Active19,233 in stock
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Overview

The TMUX1109RSVR is a high-performance, dual 4:1 precision analog multiplexer designed for signal switching between 1.08V and 5.5V. It features ultra-low leakage current of 3pA and a low charge injection of -1pC, making it ideal for high-accuracy measurement systems. Its bidirectional signal path and rail-to-rail operation allow for flexible routing of both analog and digital signals in space-constrained designs.

Why Choose This Part

The device offers an industry-leading low supply current of 0.008uA at 5V, significantly extending battery life in portable applications. Its 135MHz bandwidth and -90dB crosstalk at 1MHz ensure high-speed signal integrity, while 1.8V logic compatibility eliminates the need for external level shifters when interfacing with modern low-voltage MCUs.

Applications

Data Acquisition Systems (DAQ)
Switching multiple sensor inputs into a single high-resolution ADC with minimal signal distortion and offset error.
Battery Management Systems
Monitoring individual cell voltages across a battery stack using its 5.5V rail-to-rail capability and low power consumption.
Medical Instrumentation
Handling sensitive physiological signals where low charge injection and high crosstalk rejection are critical for signal integrity.
Optical Networking
Routing control signals and monitoring photodiodes in optical transceivers using the compact 16-UQFN package.

Key Specifications

Crosstalk -90dB ~ -80dB @ 1MHz ~ 10MHz
Mounting Type Surface Mount
-3db Bandwidth 135MHz
Package / Case 16-UFQFN
Switch Circuit DP4T
Charge Injection -1pC
Number of Circuits 2
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 16-UQFN (2.6x1.8)
On-State Resistance (Max) 4Ohm
Switch Time (Ton, Toff) (Max) 12ns, 6ns (Typ)
Voltage - Supply, Dual (V+/-) +/-2.75V
Current - Leakage (IS(off)) (Max) 80pA
Multiplexer/Demultiplexer Circuit 4:1
Channel Capacitance (CS(off), CD(off)) 7.5pF, 32pF
Channel-to-Channel Matching (ΔRon) 180mOhm

Getting Started

Designers can evaluate this part using the TMUX1109EVM evaluation module to verify leakage and switching performance. Ensure decoupling capacitors are placed close to the VDD pin and follow layout guidelines for high-impedance signal paths to maintain the low leakage specifications. The device features break-before-make switching, which inherently prevents signal shorting during transitions.