Overview
The LMP7704MAX/NOPB is a precision, CMOS input, rail-to-rail input and output (RRIO) quad amplifier produced by Texas Instruments. This device is part of the LMP™ precision amplifier family and is designed for high-precision applications such as sensor interfaces and instrumentation. The LMP7704 features a wide supply voltage range of 2.7 V to 12 V, making it versatile for various operating conditions. It is available in a 14-pin SOIC or TSSOP package, which is ideal for area-constrained PC boards and portable electronics.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit |
|---|---|---|---|
| Input Offset Voltage (Vos) | ±220 µV | ±220 µV | µV |
| Input Bias Current | ±1 pA | ±1 pA | pA |
| Gain Bandwidth Product | 2.5 MHz | 2.5 MHz | MHz |
| Common-Mode Rejection Ratio (CMRR) | 130 dB | 130 dB | dB |
| Open-Loop Gain | 130 dB | 130 dB | dB |
| Supply Current | 2.9 mA | 3.5 mA | mA |
| Supply Voltage Range | 2.7 V to 12 V | 2.7 V to 12 V | V |
| Operating Temperature Range | −40°C to 125°C | −40°C to 125°C | °C |
| Output Voltage Swing High from V+ | 40 mV | 50 mV | mV |
| Output Voltage Swing Low from V− | 40 mV | 60 mV | mV |
| Slew Rate | 0.9 V/μs | 0.9 V/μs | V/μs |
| Input Referred Voltage Noise | 9 nV/√Hz | 9 nV/√Hz | nV/√Hz |
Key Features
- CMOS Input Stage: The LMP7704 features a CMOS input stage, which provides low input bias current and high input impedance.
- Rail-to-Rail Input and Output: The amplifier can operate with input and output voltages that swing within 40 mV of either supply rail, maximizing signal dynamic range.
- Low Offset Voltage: The device has a low input offset voltage of ±220 µV, making it suitable for precision applications.
- Wide Supply Voltage Range: It operates over a supply voltage range of 2.7 V to 12 V, making it versatile for different power supply conditions.
- High Common-Mode Rejection Ratio (CMRR): The CMRR is 130 dB, which is beneficial for rejecting common-mode noise.
- Small Package Options: Available in 14-pin SOIC and TSSOP packages, ideal for area-constrained designs.
Applications
- High Impedance Sensor Interface: Suitable for interfacing with high-impedance sensors due to its low input bias current and high input impedance.
- Battery-Powered Instrumentation: Ideal for battery-powered devices due to its low power consumption and wide supply voltage range.
- High Gain Amplifiers: Can be used in high-gain amplifier configurations due to its high open-loop gain.
- DAC Buffer: Can be used as a buffer for digital-to-analog converters (DACs) to improve output drive capability.
- Instrumentation Amplifier: Suitable for use in instrumentation amplifier circuits where high precision and low noise are required.
- Active Filters: Can be used in active filter designs where precision and stability are crucial.
Q & A
- What is the input offset voltage of the LMP7704?
The input offset voltage of the LMP7704 is ±220 µV.
- What is the input bias current of the LMP7704?
The input bias current of the LMP7704 is ±1 pA.
- What is the gain bandwidth product of the LMP7704?
The gain bandwidth product of the LMP7704 is 2.5 MHz.
- What is the common-mode rejection ratio (CMRR) of the LMP7704?
The CMRR of the LMP7704 is 130 dB.
- What is the supply voltage range of the LMP7704?
The supply voltage range of the LMP7704 is 2.7 V to 12 V.
- What is the operating temperature range of the LMP7704?
The operating temperature range of the LMP7704 is −40°C to 125°C.
- What are the typical applications of the LMP7704?
The LMP7704 is typically used in high-impedance sensor interfaces, battery-powered instrumentation, high-gain amplifiers, DAC buffers, instrumentation amplifiers, and active filters.
- What package options are available for the LMP7704?
The LMP7704 is available in 14-pin SOIC and TSSOP packages.
- What is the slew rate of the LMP7704?
The slew rate of the LMP7704 is 0.9 V/μs.
- What is the input referred voltage noise of the LMP7704?
The input referred voltage noise of the LMP7704 is 9 nV/√Hz.
