Overview
The LPV324MX, part of the LPV3xx-N family from Texas Instruments, is a quad low-voltage, low-power operational amplifier. This device is designed to be highly cost-effective and efficient, making it ideal for applications where space, power consumption, and cost are critical factors. Built using Texas Instruments's advanced submicron silicon-gate BiCMOS process, the LPV324MX offers bipolar input and output stages, enhancing noise performance and output current drive. It is particularly suited for general-purpose low-voltage applications, portable devices, and active filters.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | V+ = 2.7 V to 5 V | 2.7 | - | 5 | V |
| Supply Current (per channel) | TJ = 25°C, V+ = 5 V | 7 | 9 | 12 | µA |
| Input Offset Voltage | TJ = 25°C, V+ = 5 V | 1.5 | 7 | 10 | mV |
| Input Bias Current | TJ = 25°C, V+ = 5 V | 2 | 50 | 60 | nA |
| Gain-Bandwidth Product | CL = 22 pF, TJ = 25°C | 112 | - | - | kHz |
| Output Swing (Sourcing) | RL = 100 kΩ, TJ = 25°C | V+ - 100 mV | V+ - 3.5 mV | V+ - 200 mV | mV |
| Output Swing (Sinking) | RL = 100 kΩ, TJ = 25°C | 90 mV | 180 mV | 220 mV | mV |
| Operating Temperature Range | - | -40°C | - | 85°C | °C |
Key Features
- No Crossover Distortion: Ensures clean output signals without distortion.
- Space-Saving Package: Available in compact packages such as SOIC (14) and TSSOP (14), which are ideal for small portable devices.
- Low Supply Current: Consumes only 28 µA for all four channels at 5 V, maximizing battery life in portable applications.
- Rail-to-Rail Output Swing: Provides maximum dynamic range at the output, especially important in low-supply voltage operations.
- Input Common-Mode Voltage Range Includes Ground: Allows direct sensing near ground in single-supply operation.
- High Speed-Power Ratio: Achieves 152 kHz bandwidth with a low supply current of 9 µA per channel.
- Capacitive Load Tolerance: Can directly drive 200 pF in unity-gain without oscillation.
Applications
- Active Filters: Suitable for designing active filters due to its low power and high speed-power ratio.
- General-Purpose Low Voltage Applications: Ideal for applications requiring low voltage and low power operation.
- General-Purpose Portable Devices: Perfect for cellular phones, pagers, and other portable electronic devices.
- Instrumentation Amplifiers: Can be used to build three-op-amp instrumentation amplifiers with high input impedance.
Q & A
- What is the typical supply current for the LPV324MX at 5 V?
The typical supply current for the LPV324MX at 5 V is 28 µA for all four channels.
- What is the gain-bandwidth product of the LPV324MX?
The gain-bandwidth product of the LPV324MX is 152 kHz.
- What is the operating temperature range of the LPV324MX?
The operating temperature range of the LPV324MX is -40°C to 85°C.
- Does the LPV324MX have rail-to-rail output swing capability?
Yes, the LPV324MX has rail-to-rail output swing capability.
- What is the input common-mode voltage range of the LPV324MX?
The input common-mode voltage range of the LPV324MX includes ground and extends up to V+ - 0.8 V.
- Can the LPV324MX drive capacitive loads directly?
The LPV324MX can directly drive 200 pF in unity-gain without oscillation.
- What are the package options for the LPV324MX?
The LPV324MX is available in SOIC (14) and TSSOP (14) packages.
- How does the LPV324MX help in reducing noise pickup?
The small package size of the LPV324MX allows it to be placed closer to the signal source, reducing noise pickup and increasing signal integrity.
- Can the LPV324MX be used in instrumentation amplifiers?
Yes, the LPV324MX can be used to build three-op-amp instrumentation amplifiers.
- What is the typical input offset voltage of the LPV324MX at 25°C?
The typical input offset voltage of the LPV324MX at 25°C is 7 mV.
