Overview
The LM7301IMX/NOPB, produced by Texas Instruments, is a high-performance operational amplifier designed for a wide range of applications. It offers greater than rail-to-rail input range, full rail-to-rail output swing, and the ability to drive large capacitive loads. With a low supply current of 0.6 mA and a 4-MHz gain-bandwidth product, this device is particularly suited for portable applications where battery life is a critical factor. The LM7301 operates on supply voltages from 1.8 V to 32 V, making it versatile for various low-power systems. Its compact packaging, including SOIC-8 and SOT-23 options, allows for easy integration into low-profile designs such as PCMCIA cards.
Key Specifications
| Parameter | Conditions | Units | Typical | Limit |
|---|---|---|---|---|
| Supply Current (IS) | V+ = 2.2V to 30V, V- = 0V | mA | 0.57 - 0.72 | 1.24 - 1.35 max |
| Input Offset Voltage (VOS) | VCM = 0V, V+ = 5V | mV | 0.03 - 0.04 | 6 - 8 max |
| Input Bias Current (IB) | VCM = 0V, V+ = 5V | nA | 90 - 103 | 200 - 300 max |
| Slew Rate (SR) | ±4V Step @ VS ±6V | V/μs | 1.25 | |
| Gain-Bandwidth Product (GBW) | f = 100 kHz, RL = 10 kΩ | MHz | 4 | |
| Input-Referred Voltage Noise (en) | f = 1 kHz | nV/√Hz | 36 | |
| Total Harmonic Distortion (T.H.D.) | f = 10 kHz | % | 0.006 | |
| Common Mode Rejection Ratio (CMRR) | 0V ≤ VCM ≤ 30V | dB | 104 - 115 | 80 - 90 min |
| Power Supply Rejection Ratio (PSRR) | 2.2V ≤ V+ ≤ 30V | dB | 104 - 115 | 87 - 90 min |
| Input Common-Mode Voltage Range (VCM) | CMRR > 80 dB | V | 0V to V+ |
Key Features
- Rail-to-Rail Input and Output: The LM7301 offers greater than rail-to-rail input range and full rail-to-rail output swing, providing maximum dynamic range at the output, especially important in low supply voltage operations.
- Low Power Consumption: With a supply current of only 0.6 mA, this device is ideal for battery-powered and portable applications where power efficiency is crucial.
- High Capacitive Load Driving Ability: The LM7301 can drive large capacitive loads, such as 1000 pF, with minimal reduction in phase margin.
- Wide Supply Voltage Range: Operates on supplies from 1.8 V to 32 V, making it versatile for various applications.
- Low Distortion and Clean Transient Response: Offers a well-behaved transient response with low distortion, ensuring clean and symmetrical output signals.
- High Common-Mode Rejection Ratio (CMRR) and Power Supply Rejection Ratio (PSRR): Provides precision performance even with unregulated or variable power supplies.
Applications
- Portable Instrumentation: Ideal for battery-powered instruments due to its low power consumption and high performance.
- Signal Conditioning Amplifiers/ADC Buffers: Suitable for signal conditioning and buffering in analog-to-digital converter applications.
- Active Filters: Can be used in active filter circuits due to its high gain-bandwidth product and low distortion.
- Modems: Applicable in modem designs where high performance and low power are required.
- PCMCIA Cards: Fits easily on low-profile PCMCIA cards, making it suitable for compact designs.
Q & A
- What is the supply current of the LM7301?
The supply current of the LM7301 is typically 0.57 to 0.72 mA, with a maximum of 1.24 to 1.35 mA.
- What is the gain-bandwidth product of the LM7301?
The gain-bandwidth product of the LM7301 is 4 MHz.
- What is the input common-mode voltage range of the LM7301?
The input common-mode voltage range of the LM7301 includes both power supply rails, up to V+.
- Can the LM7301 drive large capacitive loads?
Yes, the LM7301 can drive large capacitive loads, such as 1000 pF, with minimal reduction in phase margin.
- What is the slew rate of the LM7301?
The slew rate of the LM7301 is 1.25 V/μs.
- What are the typical applications of the LM7301?
The LM7301 is typically used in portable instrumentation, signal conditioning amplifiers, active filters, modems, and PCMCIA cards.
- What is the operating supply voltage range of the LM7301?
The LM7301 operates on supply voltages from 1.8 V to 32 V.
- Does the LM7301 have a high common-mode rejection ratio (CMRR)?
Yes, the LM7301 has a high CMRR, typically 104 dB to 115 dB.
- Is the LM7301 suitable for low-power systems?
Yes, the LM7301 is highly suitable for low-power systems due to its low supply current and high performance.
- What are the available packages for the LM7301?
The LM7301 is available in SOIC-8 and SOT-23 packages.
