Overview
The TL031ID is a single, 30-V, 1.1-MHz, JFET-input operational amplifier produced by Texas Instruments. It is part of the TL03x series, which offers improved DC and AC characteristics over the TL06x family of low-power BiFET operational amplifiers. The TL031ID features on-chip zener trimming of offset voltage, resulting in precision grades as low as 1.5 mV for greater accuracy in DC-coupled applications. This device is optimized for micropower operation and is pin-compatible with the TL06x series, making it an excellent choice for upgrading existing circuits or for optimal performance in new designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage | ±15 V, ±5 V | V |
| Differential Input Voltage | ±30 V | V |
| Input Offset Voltage | 1.5 mV (TL031A) | mV |
| Power Consumption | 6.5 mW/Channel Typ | mW |
| Slew Rate (Positive/Negative) | 1.5/3.9 V/μs | V/μs |
| Bandwidth | 1.1 MHz | MHz |
| Input Bias Current | 1-100 pA | pA |
Key Features
- Direct upgrades for the TL06x low-power BiFETs.
- Low power consumption: 6.5 mW/Channel Typ.
- On-chip offset-voltage trimming for improved DC performance (1.5 mV, TL031A).
- Higher slew rate and bandwidth without increased power consumption.
- Available in TSSOP for small form-factor designs.
- Inherently higher input impedance due to JFET-input transistors, making it better suited for interfacing with high-impedance sensors or very low-level AC signals.
Applications
The TL031ID is suitable for a variety of applications, including:
- DC-coupled applications requiring high precision and low offset voltage.
- Interfacing with high-impedance sensors or very low-level AC signals.
- Micropower operation in battery-powered devices.
- Upgrading existing circuits that use the TL06x series of operational amplifiers.
- Small form-factor designs due to its availability in TSSOP packages.
Q & A
- What is the typical power consumption of the TL031ID?
The typical power consumption of the TL031ID is 6.5 mW per channel.
- What is the input offset voltage of the TL031A?
The input offset voltage of the TL031A is as low as 1.5 mV.
- What are the operating temperature ranges for the TL031ID?
The TL031ID operates over a temperature range of -40°C to 85°C.
- What is the slew rate of the TL031ID?
The positive slew rate is 1.5 V/μs, and the negative slew rate is 3.9 V/μs.
- Is the TL031ID compatible with the TL06x series?
Yes, the TL031ID is pin-compatible with the TL06x series and can be used as a direct upgrade.
- What package types are available for the TL031ID?
The TL031ID is available in SOIC (D) and TSSOP packages.
- What is the bandwidth of the TL031ID?
The bandwidth of the TL031ID is 1.1 MHz.
- Can the TL031ID be used in single-supply systems?
Yes, but care must be taken to observe common-mode input-voltage limits and output swing. DC biasing of the input signal is required, and loads should be terminated to a virtual-ground node at midsupply.
- What is the input bias current of the TL031ID?
The input bias current of the TL031ID is typically between 1-100 pA.
- Is the TL031ID suitable for high-impedance sensor applications?
Yes, the TL031ID is inherently better suited for interfacing with high-impedance sensors due to its JFET-input transistors.
