Overview
The TS391AILT is a low-power voltage comparator designed and manufactured by STMicroelectronics. This device is optimized to operate from a single supply over a wide range of voltages, from 2 V to 36 V, or from dual supplies ranging from ±1 V to ±18 V. It is particularly noted for its very low supply current, which is independent of the supply voltage, making it highly efficient for various applications. The TS391AILT is available in SOT23-5 and DFN8 2x2 packages, catering to different design requirements.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (Single) | 2 | - | 36 | V |
| Supply Voltage (Dual) | ±1 | - | ±18 | V |
| Supply Current | 0.2 | 0.5 | 1.25 | mA |
| Input Bias Current | 25 | 250 | 400 | nA |
| Input Offset Voltage (TS391A) | 1 | 1.5 | 2 | mV |
| Input Offset Current | 5 | 50 | 150 | nA |
| Output Saturation Voltage | 250 | - | 400 | mV |
| Output Sink Current | 6 | - | 16 | mA |
| Response Time (Small Signal) | 1.3 | - | - | µs |
| Response Time (Large Signal) | 300 | - | - | ns |
Key Features
- Wide single supply voltage range (2 V to 36 V) or dual supplies (±1 V to ±18 V)
- Very low supply current (0.2 mA at 5 V) independent of supply voltage
- Low input bias current and low input offset voltage
- Input common-mode voltage range includes ground
- Low output saturation voltage (250 mV typ. at Io = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, CMOS compatible outputs
- Available in SOT23-5 and DFN8 2x2 packages
Applications
The TS391AILT is suitable for a variety of applications where low power consumption and high accuracy are required. These include:
- Industrial control systems
- Automotive systems (with appropriate automotive-grade versions)
- Medical devices
- Consumer electronics requiring low power comparators
- General-purpose comparator applications in embedded systems
Q & A
- What is the supply voltage range for the TS391AILT?
The TS391AILT can operate from a single supply voltage ranging from 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V.
- What is the typical supply current of the TS391AILT?
The typical supply current is 0.2 mA at 5 V, which is independent of the supply voltage.
- What are the input bias and offset currents of the TS391AILT?
The input bias current is typically 25 nA, and the input offset current is typically ±5 nA.
- What is the input offset voltage for the TS391A version?
The input offset voltage for the TS391A version is typically 1.5 mV and a maximum of 2 mV.
- What is the output saturation voltage of the TS391AILT?
The output saturation voltage is typically 250 mV at an output current of 4 mA).
- What are the package options for the TS391AILT?
The TS391AILT is available in SOT23-5 and DFN8 2x2 packages).
- Is the TS391AILT compatible with various logic families?
Yes, the TS391AILT has outputs compatible with TTL, DTL, ECL, and CMOS logic families).
- What is the response time of the TS391AILT for small and large signal transitions?
The small signal response time is typically 1.3 µs, and the large signal response time is typically 300 ns).
- Are there automotive-grade versions of the TS391AILT available?
Yes, there are automotive-grade versions available, such as the TS391AILT and TS391RIYLT, which meet AEC Q100 and Q003 standards).
- What is the operating temperature range for the TS391AILT?
The operating temperature range is from -40°C to 125°C).
