Overview
The TLV8542DR, produced by Texas Instruments, is a dual-channel, ultra-low-power operational amplifier designed for cost-optimized sensing applications in wireless and low-power wired equipment. This nanopower operational amplifier is part of the TLV854x family, which is optimized for minimizing power consumption, making it ideal for applications where battery life is critical, such as motion detecting security systems and high source impedance sensing.
Key Specifications
| Parameter | Value |
|---|---|
| Nanopower Supply Current | 500 nA per Channel |
| Offset Voltage | 3.1 mV (maximum) |
| Temperature Coefficient of Offset Voltage (TcVos) | 0.8 µV/°C |
| Gain Bandwidth | 8 kHz |
| Stability | Unity-Gain Stable |
| Input-Bias Current | 100 fA |
| Supply Voltage Range | 1.7 V to 3.6 V |
| Input/Output Type | Rail-to-Rail Input and Output (RRIO) |
| Operating Temperature Range | –40°C to +125°C |
| Package Type | Dual in 8-pin SOIC |
Key Features
- Ultra-Low Power Consumption: 500 nA per channel, making it suitable for battery-powered devices.
- Rail-to-Rail Input and Output: Allows the input and output signals to swing from the negative supply rail to the positive supply rail.
- Low Input-Bias Current: 100 fA, reducing errors in sensitive applications.
- Wide Supply Range: Operates from 1.7 V to 3.6 V, providing flexibility in system design.
- EMI Protection: Built-in protection reduces sensitivity to unwanted RF signals.
- Unity-Gain Stable: Ensures stability in unity-gain configurations.
Applications
- Motion Detecting Security Systems: Ideal for microwave and PIR motion sensing applications where low power consumption is critical.
- High Source Impedance Sensing: Suitable for transimpedance amplifier configurations and other high impedance sensing applications.
- Remote and Distributed Sensing: Useful in filtering out noise from AC power lines, such as in 60-Hz notch filter applications.
- Low-Power Wireless and Wired Equipment: Optimized for use in cost-optimized sensing applications in various low-power devices.
Q & A
- What is the typical supply current of the TLV8542DR?
The typical supply current is 500 nA per channel. - What is the maximum offset voltage of the TLV8542DR?
The maximum offset voltage is 3.1 mV. - What is the gain bandwidth of the TLV8542DR?
The gain bandwidth is 8 kHz. - Is the TLV8542DR unity-gain stable?
Yes, the TLV8542DR is unity-gain stable. - What is the input-bias current of the TLV8542DR?
The input-bias current is 100 fA. - What is the operating temperature range of the TLV8542DR?
The operating temperature range is –40°C to +125°C. - What types of packages are available for the TLV8542DR?
The TLV8542DR is available in an 8-pin SOIC package. - Does the TLV8542DR have built-in EMI protection?
Yes, the TLV8542DR has built-in EMI protection. - What is the supply voltage range for the TLV8542DR?
The supply voltage range is from 1.7 V to 3.6 V. - Can the TLV8542DR be used in high source impedance sensing applications?
Yes, it is suitable for high source impedance sensing applications.
