Overview
The TSU102IST, produced by STMicroelectronics, is a nanopower operational amplifier that offers ultra-low power consumption and a wide range of features making it ideal for low-power and battery-powered applications. This device is part of the TSU10x series, which includes the TSU101 and TSU104 models. The TSU102IST is characterized by its low supply current of 580 nA typical and 750 nA maximum per channel at 1.8 V, and it operates within a supply voltage range of 1.5 V to 5.5 V. This operational amplifier is designed for applications requiring high efficiency and long battery life.
Key Specifications
| Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 1.5 | 5.5 | V | ||
| Supply Current (ICC) per Channel | No load, Vout = VCC/2 | 580 | 750 | 800 | nA |
| Input Offset Voltage (Vio) | T = 25 °C | -3 | 0.1 | 3 | mV |
| Input Bias Current (Iib) | T = 25 °C | 0.01 | 2 | 30 | pA |
| Gain Bandwidth Product (GBP) | RL = 1 MΩ, CL = 60 pF | 8 | kHz | ||
| Slew Rate (SR) | RL = 1 MΩ, CL = 60 pF | 3 | V/ms | ||
| Operating Temperature Range (Toper) | -40 | 85 | °C | ||
| Common Mode Input Voltage Range (Vicm) | (VCC-) - 0.1 to (VCC +) + 0.1 | V |
Key Features
- Ultra-Low Power Consumption: Typical supply current of 580 nA at 1.8 V, making it suitable for battery-powered applications.
- Wide Supply Voltage Range: Operates from 1.5 V to 5.5 V, allowing it to be powered by a coin-type Lithium battery or a regulated voltage.
- Rail-to-Rail Input and Output: Ensures that the input and output signals can swing from the negative to the positive supply rail.
- Low Input Bias Current: Maximum input bias current of 2 pA at 25 °C, which is beneficial for high impedance sensor applications.
- High Accuracy and Stability: Low input offset voltage and drift, ensuring stable operation over a wide temperature range.
- Tolerance to Power Supply Transient Drops: Robust against power supply transient drops, enhancing reliability in various applications.
Applications
- Ultra Long Life Battery-Powered Applications: Ideal for devices requiring extended battery life.
- Power Metering: Suitable for energy measurement and monitoring systems.
- UV and Photo Sensors: Used in applications involving light sensing and measurement.
- Electrochemical and Gas Sensors: Applicable in chemical and gas detection systems.
- Pyroelectric Passive Infrared (PIR) Detection: Used in motion detection and security systems.
- Battery Current Sensing: For monitoring battery health and performance.
- Medical Instrumentation: Suitable for low-power medical devices and sensors.
- RFID Readers: Used in radio-frequency identification systems.
Q & A
- What is the typical supply current of the TSU102IST at 1.8 V?
The typical supply current is 580 nA at 1.8 V.
- What is the operating temperature range of the TSU102IST?
The operating temperature range is from -40 °C to 85 °C.
- What is the gain bandwidth product of the TSU102IST?
The gain bandwidth product is 8 kHz typical.
- Is the TSU102IST rail-to-rail?
Yes, the TSU102IST has rail-to-rail input and output capabilities.
- What is the maximum input bias current of the TSU102IST at 25 °C?
The maximum input bias current is 2 pA at 25 °C.
- What are some common applications of the TSU102IST?
Common applications include ultra long life battery-powered devices, power metering, UV and photo sensors, electrochemical and gas sensors, and medical instrumentation.
- What is the slew rate of the TSU102IST?
The slew rate is 3 V/ms typical.
- Can the TSU102IST operate with a coin-type Lithium battery?
Yes, it can be efficiently supplied by a coin-type Lithium battery or a regulated voltage.
- What is the input offset voltage of the TSU102IST at 25 °C?
The input offset voltage is 0.1 mV typical at 25 °C.
- Is the TSU102IST tolerant to power supply transient drops?
Yes, it is tolerant to power supply transient drops, enhancing its reliability in various applications.
