Overview
The TMUX1123DGKR is a precision complementary metal-oxide semiconductor (CMOS) device from Texas Instruments, part of the TMUX112x family. This 1:1 (SPST), 2-channel precision switch is designed for high-precision measurement applications. The TMUX1123 features two independently selectable channels, with one channel controlled by an active high logic input and the other by an active low logic input. This device operates over a wide supply range of 1.08V to 5.5V, making it versatile for various applications from medical equipment to industrial systems.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VDD (Supply Voltage) | 1.08 | 5.5 | V | |
| VS or VD (Signal Path Input/Output Voltage) | 0 | VDD + 0.5 | V | |
| RON (On-Resistance) | 1.9 | Ω | ||
| Leakage Current | 3 | pA | ||
| Charge Injection | –1.5 | pC | ||
| Operating Temperature | –40 | 125 | °C | |
| ESD Protection HBM | 2000 | V | ||
| VDD Supply Current | 0.007 | 1 | µA |
Key Features
- Wide supply range: 1.08V to 5.5V
- Low leakage current: 3pA
- Low charge injection: –1.5pC
- Low on-resistance: 1.9Ω
- Operating temperature range: –40°C to +125°C
- 1.8V Logic compatible
- Fail-safe logic
- Rail to rail operation
- Bidirectional signal path
- Break-before-make switching (TMUX1123 only)
- ESD protection HBM: 2000 V
Applications
- Sample-and-hold circuits
- Feedback gain switching
- Signal isolation
- Field transmitters
- Programmable logic controllers (PLC)
- Factory automation and control
- Ultrasound scanners
- Patient monitoring and diagnostics
- Electrocardiogram (ECG)
- Data acquisition systems (DAQ)
- Semiconductor test equipment
- Battery test equipment
- Instrumentation: lab, analytical, portable
- Ultrasonic smart meters: water and gas
- Optical networking
- Optical test equipment
Q & A
- What is the operating supply voltage range of the TMUX1123?
The TMUX1123 operates over a supply voltage range of 1.08V to 5.5V.
- What is the typical on-resistance of the TMUX1123?
The typical on-resistance of the TMUX1123 is 1.9Ω.
- What is the leakage current of the TMUX1123?
The leakage current of the TMUX1123 is 3pA.
- What is the charge injection of the TMUX1123?
The charge injection of the TMUX1123 is –1.5pC.
- What is the operating temperature range of the TMUX1123?
The operating temperature range of the TMUX1123 is –40°C to +125°C.
- Is the TMUX1123 compatible with 1.8V logic?
Yes, the TMUX1123 is 1.8V logic compatible.
- Does the TMUX1123 support bidirectional signal paths?
Yes, the TMUX1123 supports bidirectional signal paths.
- What type of switching does the TMUX1123 exhibit?
The TMUX1123 exhibits break-before-make switching.
- What is the ESD protection rating of the TMUX1123?
The TMUX1123 has an ESD protection rating of 2000 V HBM.
- What are some common applications of the TMUX1123?
Common applications include sample-and-hold circuits, feedback gain switching, signal isolation, and various medical and industrial systems.
