Overview
The LMP8672MAX/NOPB, produced by Texas Instruments, is a high-performance, dual 40V low noise precision amplifier. This device combines excellent precision, low noise, and a wide operating voltage range, making it ideal for applications requiring high signal-to-noise ratio (SNR) and wide dynamic range. The LMP8672 is part of the LMP8671/2/4 family, which includes single, dual, and quad configurations, offering flexibility for various design needs.
Key Specifications
| Parameter | Conditions | Typical | Limit |
|---|---|---|---|
| Input Offset Voltage (VOS) | ±100 μV | ±400 μV (max) | |
| Temperature Coefficient of VOS (TC VOS) | 2 μV/°C (max) | ||
| Power Supply Voltage Range | ±2.5V to ±20V | ||
| Voltage Noise Density | f = 1kHz | 2.5 nV/√Hz | 4.7 nV/√Hz (max) |
| Slew Rate | ±20 V/μs | ±15 V/μs (min) | |
| Gain Bandwidth Product (GBWP) | 55 MHz | 45 MHz (min) | |
| Open Loop Gain (AVOL) | 135 dB | 125 dB (min) | |
| Input Bias Current (IB) | 10 nA (max) | ||
| Output Current (IOUT) | RL = 2kΩ | ±26 mA | |
| PSRR and CMRR | 110 dB (min) |
Key Features
- High open loop gain of 135 dB and superb linearity of 0.000009%.
- Low voltage noise density of 2.5 nV/√Hz.
- High slew rate of ±20 V/μs and output current capability of ±26 mA.
- Output short circuit protection and high PSRR and CMRR exceeding 110 dB.
- Wide operating voltage range from ±2.5V to ±20V.
- Available in SOIC-8 package.
Applications
- Precision PLL filters and multi-feedback active filters.
- Low noise industrial applications, including GPS receivers and precision test and measurement systems.
- Ultrasound and medical imaging equipment.
- 4-20mA current loops and motor control systems.
- Data acquisition systems requiring high gains and precision.
Q & A
- What is the input offset voltage of the LMP8672?
The input offset voltage (VOS) of the LMP8672 is typically ±100 μV, with a maximum limit of ±400 μV.
- What is the temperature coefficient of VOS for the LMP8672?
The temperature coefficient of VOS (TC VOS) is 2 μV/°C (max).
- What is the power supply voltage range for the LMP8672?
The power supply voltage range is from ±2.5V to ±20V.
- What is the voltage noise density of the LMP8672?
The voltage noise density is 2.5 nV/√Hz at 1 kHz.
- What is the slew rate of the LMP8672?
The slew rate is ±20 V/μs.
- What is the gain bandwidth product (GBWP) of the LMP8672?
The GBWP is 55 MHz.
- What is the open loop gain of the LMP8672?
The open loop gain is 135 dB.
- What is the input bias current of the LMP8672?
The input bias current is typically 10 nA (max).
- What is the output current capability of the LMP8672?
The output current capability is ±26 mA.
- What are some common applications of the LMP8672?
Common applications include precision PLL filters, low noise industrial applications, ultrasound, and motor control systems.
