Overview
The TMUX7209RUMR is a precision 4:1, 2-channel multiplexer produced by Texas Instruments. This device is part of the TMUX720x family of precision switches and multiplexers, known for their low on-resistance, low charge injection, and high current support. The TMUX7209 is designed to handle both analog and digital signals, making it versatile for various applications. It operates over a wide range of supply voltages, including single supply (4.5V to 44V) and dual supplies (±4.5V to ±22V), and is compatible with 1.8V logic inputs. The device features integrated pull-down resistors on logic pins, fail-safe logic, and rail-to-rail operation, ensuring reliable performance in diverse environments.
Key Specifications
| Parameter | Test Conditions | Typical Value | Unit |
|---|---|---|---|
| On-Resistance (RON) | VS = –15 V to +15 V, ID = –10 mA | 5.4 Ω | Ω |
| On-Resistance Mismatch (ΔRON) | VS = –15 V to +15 V, ID = –10 mA | 0.7 Ω | Ω |
| Charge Injection | - | 3 pC | pC |
| Maximum Continuous Current | - | 400 mA (WQFN), 300 mA (TSSOP) | mA |
| Operating Temperature | - | –40°C to +125°C | °C |
| Transition Time (tTRAN) | VS = 10 V, RL = 300 Ω, CL = 35 pF | 208 ns | ns |
| Turn-On Time (tON(EN)) | VS = 10 V, RL = 300 Ω, CL = 35 pF | 205 ns | ns |
| Turn-Off Time (tOFF(EN)) | VS = 10 V, RL = 300 Ω, CL = 35 pF | 270 ns | ns |
| Break-Before-Make Time Delay (tBBM) | VS = 10 V, RL = 300 Ω, CL = 35 pF | 50 ns | ns |
| Bandwidth (-3dB) | RL = 50 Ω, CL = 5 pF, VS = 0 V | 52 MHz | MHz |
Key Features
- Latch-Up Immunity: Prevents undesirable high current events between parasitic structures within the device, ensuring reliability in harsh environments.
- Dual Supply Range: Operates with dual supplies (±4.5V to ±22V) or single supply (4.5V to 44V), and supports asymmetric supplies.
- Low On-Resistance: Features low on-resistance of 5.4 Ω, making it suitable for high precision measurement applications.
- Low Charge Injection: Offers low charge injection of 3 pC, minimizing signal distortion.
- High Current Support: Supports up to 400 mA (WQFN package) and 300 mA (TSSOP package) continuous current.
- 1.8V Logic Compatible Inputs: Compatible with 1.8V logic inputs, enhancing flexibility in system design.
- Integrated Pull-Down Resistors: Includes integrated pull-down resistors on logic pins for simplified circuit design.
- Fail-Safe Logic: Ensures that the device remains in a safe state when the control inputs are not driven.
- Rail-to-Rail Operation: Allows signal paths to operate from VSS to VDD, providing full signal range utilization.
- Bidirectional Signal Path: Supports bidirectional analog and digital signals on the source and drain pins.
- Break-Before-Make Switching: Ensures that the old channel is disconnected before the new channel is connected, preventing signal overlap.
Applications
- Factory Automation and Control: Suitable for use in programmable logic controllers (PLC) and analog input modules.
- Semiconductor Test Equipment: Used in high precision measurement and testing applications.
- Battery Test Equipment: Ideal for battery management systems (BMS), including lithium battery packs.
- Ultrasound Scanners and Medical Equipment: Applied in patient monitoring and diagnostics due to its high precision and reliability.
- Optical Networking and Test Equipment: Utilized in optical networking and test equipment for its low distortion and high bandwidth capabilities.
- Wired Networking and Data Acquisition Systems (DAQ): Employed in wired networking and DAQ systems requiring high signal integrity.
Q & A
- What is the primary function of the TMUX7209RUMR?
The TMUX7209RUMR is a 4:1, 2-channel multiplexer designed to switch between multiple analog or digital signals.
- What are the operating voltage ranges for the TMUX7209RUMR?
The device operates with single supply (4.5V to 44V) or dual supplies (±4.5V to ±22V), and supports asymmetric supplies.
- What is the significance of latch-up immunity in the TMUX7209RUMR?
Latch-up immunity prevents undesirable high current events between parasitic structures within the device, ensuring reliability in harsh environments.
- What is the maximum continuous current supported by the TMUX7209RUMR?
The device supports up to 400 mA (WQFN package) and 300 mA (TSSOP package) continuous current.
- Is the TMUX7209RUMR compatible with 1.8V logic inputs?
Yes, the TMUX7209RUMR is compatible with 1.8V logic inputs.
- What is the on-resistance of the TMUX7209RUMR?
The on-resistance is typically 5.4 Ω.
- What is the charge injection of the TMUX7209RUMR?
The charge injection is 3 pC.
- What is the operating temperature range of the TMUX7209RUMR?
The operating temperature range is –40°C to +125°C.
- What are some common applications of the TMUX7209RUMR?
Common applications include factory automation, semiconductor test equipment, battery test equipment, ultrasound scanners, and wired networking.
- Does the TMUX7209RUMR support bidirectional signal paths?
Yes, the device supports bidirectional analog and digital signals on the source and drain pins.
