Overview
The TMUX1102, produced by Texas Instruments, is a precision complementary metal-oxide semiconductor (CMOS) single-pole, single-throw (SPST) switch. This device is part of the TMUX110x family and is designed for a wide range of applications, from medical equipment to industrial systems. The TMUX1102 operates with a supply voltage range of 1.08V to 5.5V, making it versatile for various use cases. It features 1.8V logic compatible inputs, fail-safe logic, and rail-to-rail operation, ensuring compatibility with both TTL and CMOS logic systems. The device supports bidirectional analog and digital signals and has ultra-low leakage currents and charge injection, making it ideal for high-precision measurement applications.
Key Specifications
| Parameter | Test Conditions | Typical Value | Unit |
|---|---|---|---|
| Supply Voltage Range | 1.08V to 5.5V | V | |
| On-Resistance (RON) | VS = 0V to VDD, ISD = 10mA | 1.8Ω (at 25°C) | Ω |
| Leakage Current (IS(OFF), ID(OFF)) | VDD = 3.3V, Switch Off | ±0.05 nA (at 25°C) | nA |
| Charge Injection | VS = 1V, RS = 0Ω, CL = 1nF | -1.5 pC | pC |
| Operating Temperature Range | -40°C to +125°C | °C | |
| Logic Control Input | 1.8V logic compatible | ||
| ESD Protection (HBM) | 2000V | V | |
| Transition Time | VS = 3V, RL = 200Ω, CL = 15pF | 12 ns (at 25°C) | ns |
Key Features
- Wide Supply Range: Operates from 1.08V to 5.5V.
- Low Leakage Current: Ultra-low on and off leakage currents (typically 3 pA).
- Low Charge Injection: -1.5 pC charge injection.
- Low On-Resistance: 1.8Ω typical on-resistance.
- 1.8V Logic Compatible Inputs: Ensures compatibility with both TTL and CMOS logic systems.
- Fail-Safe Logic: Allows voltages on the control pin to be applied before the supply pin, protecting the device from potential damage.
- Rail-to-Rail Operation: Valid signal path input/output voltage ranges from GND to VDD.
- Bidirectional Signal Path: Conducts equally well from source to drain or from drain to source.
- Break-Before-Make Switching: Ensures that the switch turns off before turning on.
- ESD Protection: Human Body Model (HBM) ESD protection up to 2000V.
Applications
- Sample-and-Hold Circuits: Ideal for precision signal sampling.
- Feedback Gain Switching: Used in feedback gain adjustment in amplifiers.
- Signal Isolation: Provides isolation between different signal paths.
- Field Transmitters: Used in industrial field transmitter applications.
- Programmable Logic Controllers (PLC): Suitable for PLC systems.
- Factory Automation and Control: Used in various factory automation and control systems.
- Ultrasound Scanners: Applied in medical ultrasound scanners.
- Patient Monitoring and Diagnostics: Used in patient monitoring and diagnostic equipment.
- Electrocardiogram (ECG): Suitable for ECG applications.
- Data Acquisition Systems (DAQ): Used in DAQ systems.
- Semiconductor Test Equipment: Applied in semiconductor testing.
- Battery Test Equipment: Used in battery testing applications.
- Instrumentation: Used in lab, analytical, and portable instrumentation.
- Ultrasonic Smart Meters: Applied in water and gas smart meters.
- Optical Networking and Test Equipment: Used in optical networking and test equipment.
Q & A
- What is the operating supply voltage range of the TMUX1102?
The TMUX1102 operates with a supply voltage range of 1.08V to 5.5V.
- What is the typical on-resistance of the TMUX1102?
The typical on-resistance of the TMUX1102 is 1.8Ω.
- What is the leakage current of the TMUX1102?
The TMUX1102 has an ultra-low leakage current, typically 3 pA.
- What is the charge injection of the TMUX1102?
The charge injection of the TMUX1102 is -1.5 pC.
- Is the TMUX1102 compatible with 1.8V logic?
Yes, the TMUX1102 has 1.8V logic compatible inputs.
- What is the operating temperature range of the TMUX1102?
The operating temperature range of the TMUX1102 is -40°C to +125°C.
- Does the TMUX1102 support bidirectional signal paths?
Yes, the TMUX1102 conducts equally well from source to drain or from drain to source.
- What is the ESD protection level of the TMUX1102?
The TMUX1102 has Human Body Model (HBM) ESD protection up to 2000V.
- What are some common applications of the TMUX1102?
The TMUX1102 is used in sample-and-hold circuits, feedback gain switching, signal isolation, field transmitters, PLCs, factory automation, ultrasound scanners, patient monitoring, ECG, DAQ systems, semiconductor test equipment, battery test equipment, and various instrumentation applications.
- How does the fail-safe logic feature of the TMUX1102 work?
The fail-safe logic feature allows voltages on the control pin to be applied before the supply pin, protecting the device from potential damage and minimizing system complexity by removing the need for power supply sequencing on the logic control pin.
