Overview
The LM837MX/NOPB is a low noise quad operational amplifier produced by Texas Instruments. It is designed for high-speed and wide bandwidth applications, making it ideal for various professional audio and instrumentation uses. The device features a new type of output stage that can drive a 600Ω load, enhancing its suitability for digital audio, graphic equalizers, preamplifiers, and other high-performance audio systems. The LM837 is internally compensated for unity gain operation and is pin-compatible with most other standard quad op amps, allowing for easy upgrades in existing systems.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (VCC/VEE) | ±15V | ±18V | V | ||
| Differential Input Voltage (VID) | ±30V | V | |||
| Common Mode Input Voltage (VIC) | ±15V | V | |||
| Operating Temperature Range (TOPR) | -40°C | +85°C | °C | ||
| Storage Temperature Range (TSTG) | -60°C | +150°C | °C | ||
| Input Offset Voltage (VOS) | RS = 50Ω | 0.3 mV | 5 mV | mV | |
| Input Bias Current (IB) | 500 nA | 1000 nA | nA | ||
| Slew Rate (SR) | RL = 600Ω | 8 V/μs | 10 V/μs | V/μs | |
| Gain Bandwidth Product (GBW) | f = 100 kHz, RL = 600Ω | 15 MHz | 25 MHz | MHz | |
| Power Bandwidth (PBW) | VO = 25 VP-P, RL = 600Ω | 200 kHz | kHz | ||
| Total Harmonic Distortion (THD) | AV = 1, VOUT = 3 Vrms, f = 20 ∼20 kHz, RL = 600Ω | 0.0015% | % | ||
| Equivalent Input Noise Voltage (en) | f = 1 kHz, RS = 100Ω | 4.5 nV/√Hz | nV/√Hz |
Key Features
- High slew rate of 10 V/μs (typical) and 8 V/μs (minimum)
- Wide gain bandwidth product of 25 MHz (typical) and 15 MHz (minimum)
- Low input noise voltage of 4.5 nV/√Hz at 1 kHz
- Low total harmonic distortion of 0.0015% at 20 kHz
- High output current capability of ±40 mA
- Excellent output drive performance, capable of driving a 600Ω load
- Internally compensated for unity gain operation
- Pin-compatible with most other standard quad op amps
Applications
The LM837MX/NOPB is suitable for a variety of high-performance applications, including:
- Digital audio systems
- Graphic equalizers
- Preamplifiers
- Professional audio equipment
- Instrumentation applications where low noise is critical
Q & A
- What is the typical slew rate of the LM837MX/NOPB?
The typical slew rate is 10 V/μs. - What is the minimum gain bandwidth product of the LM837MX/NOPB?
The minimum gain bandwidth product is 15 MHz. - What is the maximum operating temperature range for the LM837MX/NOPB?
The operating temperature range is -40°C to +85°C. - What is the input offset voltage of the LM837MX/NOPB?
The input offset voltage is 0.3 mV (minimum) and 5 mV (typical). - Can the LM837MX/NOPB drive a 600Ω load?
Yes, it can drive a 600Ω load. - What is the total harmonic distortion of the LM837MX/NOPB at 20 kHz?
The total harmonic distortion is 0.0015% at 20 kHz. - Is the LM837MX/NOPB internally compensated for unity gain operation?
Yes, it is internally compensated for unity gain operation. - Is the LM837MX/NOPB pin-compatible with other standard quad op amps?
Yes, it is pin-compatible with most other standard quad op amps. - What are some common applications of the LM837MX/NOPB?
Common applications include digital audio systems, graphic equalizers, preamplifiers, professional audio equipment, and instrumentation applications. - What is the equivalent input noise voltage of the LM837MX/NOPB at 1 kHz?
The equivalent input noise voltage is 4.5 nV/√Hz at 1 kHz.
