Overview
The TS944IDT from STMicroelectronics is a micropower operational amplifier that belongs to the TS94x series. This device is characterized by its low power consumption and rail-to-rail output voltage swing, making it ideal for battery-powered systems and other applications where low supply current is crucial. The TS944IDT operates over a supply voltage range of 2.5 V to 10 V and is designed to function within a temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | Micropower Operational Amplifier | |
| Supply Voltage | 2.5 to 10 | V |
| Input Type | CMOS | |
| Input Offset Voltage | 10 / 5 / 2 | mV |
| Input Bias Current | 1 / 150 | pA |
| Common Mode Rejection Ratio | 60 / 85 | dB |
| Supply Current (per amplifier) | 1.2 / 1.8 | µA |
| Gain Bandwidth Product | 10 | kHz |
| Slew Rate | 3 / 4.5 | V/ms |
| Output Source/Sink Current | 350 / 280 µA (source), 650 / 500 µA (sink) | µA |
| ESD Protection | 2 kV (HBM) | |
| Package Type | SOT23-5 |
Key Features
- Rail-to-Rail Output Voltage Swing: Ensures maximum output voltage range.
- Micropower Consumption: Low supply current of 1.2 µA per amplifier.
- Single Supply Operation: Operates from 2.5 V to 10 V.
- CMOS Inputs: Ultra-low input bias current of 1 pA.
- ESD Protection: Human Body Model (HBM) protection up to 2 kV.
- Latch-up Immunity: Class A latch-up immunity.
- Low Input Offset Voltage: Typical input offset voltage of 5 mV.
- High Common Mode Rejection Ratio: Up to 85 dB.
Applications
- Battery-Powered Systems: Ideal for systems requiring low power consumption, such as alarm systems.
- Portable Communication Systems: Suitable for pagers and other portable communication devices.
- Smoke/Gas/Fire Detectors: Used in detection systems where low power is essential.
- Instrumentation and Sensing: Applicable in various sensing and instrumentation applications.
- pH Meters: Used in pH measurement devices due to its low power and high accuracy.
Q & A
- What is the supply voltage range of the TS944IDT?
The TS944IDT operates over a supply voltage range of 2.5 V to 10 V.
- What is the typical input bias current of the TS944IDT?
The typical input bias current is 1 pA.
- What is the gain bandwidth product of the TS944IDT?
The gain bandwidth product is 10 kHz.
- What is the slew rate of the TS944IDT?
The slew rate is typically 3 to 4.5 V/ms.
- Does the TS944IDT have ESD protection?
- In what package types is the TS944IDT available?
The TS944IDT is available in the SOT23-5 package, among others.
- What is the operating temperature range of the TS944IDT?
The operating temperature range is -40°C to +85°C.
- What are some typical applications of the TS944IDT?
Typical applications include battery-powered systems, portable communication systems, smoke/gas/fire detectors, instrumentation, and pH meters.
- What is the common mode rejection ratio (CMRR) of the TS944IDT?
The CMRR is up to 85 dB.
- How much current does the TS944IDT typically consume?
The typical supply current per amplifier is 1.2 µA.
