Overview
The TLV2221CDBVRG4 is a single low-voltage operational amplifier (op-amp) produced by Texas Instruments. It is part of the TLV2221 series and is characterized by its Advanced LinCMOS technology, offering a balance between AC performance and low power consumption. This op-amp is optimized for low-voltage applications and is fully characterized at 3 V and 5 V supply voltages. It features high input impedance, low noise, and rail-to-rail output, making it suitable for small-signal conditioning, especially for high-impedance sources like piezoelectric transducers. The device is packaged in a compact SOT-23 package, which minimizes board space and reduces noise pickup from long PCB traces.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VIO (Input Offset Voltage) | VDD± = ±1.5 V, VIC = 0, VO = 0 | 610 | - | 620 | µV |
| IIO (Input Offset Current) | VDD± = ±1.5 V, RS = 50 Ω, VIC = 0, VO = 0 | 0.5 | - | 0.5 | pA |
| IIB (Input Bias Current) | RS = 50 Ω | 1 | - | 1 | pA |
| VICR (Common-Mode Input Voltage Range) | | VIO| ≤5 mV, RS = 50 Ω | -0.3 | - | VDD-0.3 | V |
| kSVR (Supply Voltage Rejection Ratio) | VDD = 2.7 V to 8 V, VIC = 0, No load | 95 | - | 95 | dB |
| IDD (Supply Current) | VO = 0, No load | 100 | - | 100 | µA |
Key Features
- Rail-to-Rail Output: The TLV2221CDBVRG4 features rail-to-rail output, making it ideal for interfacing with analog-to-digital converters (ADCs) and other single or split supply systems.
- Low Power Consumption: This op-amp has micropower dissipation levels, making it suitable for battery-powered and handheld devices.
- High Input Impedance and Low Noise: It exhibits high input impedance and low noise, which is beneficial for small-signal conditioning from high-impedance sources.
- Compact Packaging: The SOT-23 package is ultra-small, requiring only one-third the board space of a standard 8-pin SOIC package, and is optimized for board layout to minimize noise pickup.
Applications
- Handheld Monitoring and Remote Sensing: The low power consumption and compact size make it ideal for handheld monitoring and remote-sensing applications.
- Small-Signal Conditioning: It is excellent for conditioning signals from high-impedance sources such as piezoelectric transducers.
- Analog-to-Digital Converter Interfaces: The rail-to-rail output feature makes it a great choice when interfacing with ADCs.
Q & A
- What is the typical supply voltage range for the TLV2221CDBVRG4?
The TLV2221CDBVRG4 is typically characterized at 3 V and 5 V supply voltages, but it can operate from 2.7 V to 8 V. - What is the input offset voltage of the TLV2221CDBVRG4?
The input offset voltage (VIO) is typically around 610 µV to 620 µV. - What is the significance of the rail-to-rail output feature?
The rail-to-rail output feature allows the op-amp to output voltages that are very close to the supply rails, making it ideal for single or split supply systems and interfacing with ADCs. - Why is the SOT-23 package beneficial?
The SOT-23 package is compact, requiring only one-third the board space of a standard 8-pin SOIC package, and is optimized for board layout to minimize noise pickup. - What are some common applications of the TLV2221CDBVRG4?
Common applications include handheld monitoring, remote sensing, and small-signal conditioning for high-impedance sources like piezoelectric transducers. - How does the TLV2221CDBVRG4 handle noise?
The device is designed to minimize noise pickup due to its compact packaging and optimized board layout. - What is the typical supply current of the TLV2221CDBVRG4?
The typical supply current (IDD) is around 100 µA. - Is the TLV2221CDBVRG4 suitable for low-voltage applications?
Yes, it is optimized for low-voltage applications and is fully characterized at 3 V and 5 V. - What is the common-mode input voltage range of the TLV2221CDBVRG4?
The common-mode input voltage range (VICR) is from -0.3 V to VDD-0.3 V. - What is the supply voltage rejection ratio (kSVR) of the TLV2221CDBVRG4?
The supply voltage rejection ratio (kSVR) is typically around 95 dB.
