The **TSX561** is a high-performance, single operational amplifier (op-amp) manufactured by STMicroelectronics. It is part of the TSX series, which focuses on low power consumption, high precision, and rail-to-rail capabilities. --- ## 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the TSX561: | Parameter | Value (Typical) | | :--- | :--- | | **Supply Voltage ($V_{cc}$)** | 3V to 16V | | **Quiescent Current** | 1.1 mA | | **Gain Bandwidth Product (GBP)** | 900 kHz | | **Input Offset Voltage ($V_{io}$)** | 600 µV (max at 25°C) | | **Input Bias Current ($I_{ib}$)** | 1 pA | | **Slew Rate** | 1.1 V/µs | | **Output Type** | Rail-to-Rail | --- ## 2. Core Features * **Wide Voltage Range:** It can operate on a single supply from 3V up to 16V, making it versatile for both battery-operated 3.3V/5V systems and industrial 12V/15V systems. * **CMOS Inputs:** Because it uses CMOS technology, it has an incredibly low input bias current (pA range). This makes it ideal for interfacing with high-impedance sensors. * **Rail-to-Rail Input/Output (RRIO):** The input common-mode voltage range includes the supply rails, and the output can swing very close to the rails, maximizing dynamic range. * **Stability:** It is designed to be stable even with high capacitive loads. --- ## 3. Pin Configuration (SOT23-5 Package) The TSX561 is commonly found in the small SOT23-5 package. Below is the standard pinout representation: ```text SOT23-5 +-------+ OUT 1| |5 Vcc+ Vcc- 2| | IN+ 3| |4 IN- +-------+ ``` --- ## 4. Typical Applications The TSX561 is frequently used in the following electronic circuits: 1. **Signal Conditioning:** Amplifying small signals from sensors (temperature, pressure, light). 2. **Active Filters:** Low-pass, high-pass, or band-pass filters in audio or sensor processing. 3. **Current Sensing:** Used in high-side or low-side current monitoring due to its rail-to-rail input capability. 4. **Battery Powered Instrumentation:** Low power consumption extends the life of portable devices.