Overview
The AD548KNZ is a precision, low-power monolithic operational amplifier produced by Analog Devices Inc. This device is designed to offer excellent DC and AC performance, making it suitable for a variety of high-performance, low-power applications. The AD548KNZ is an enhanced replacement for op amps like the LF441 and TL061, providing significant improvements in power dissipation and performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Quiescent Current | 170 | - | 200 | µA |
| Input Bias Current (Warmed Up) | - | - | 10 | pA |
| Input Offset Voltage | - | - | 2 | mV |
| Input Offset Voltage Drift | - | - | 20 | µV/°C |
| Slew Rate | - | - | 1.8 | V/µs |
| Unity Gain Bandwidth | - | - | 1 | MHz |
| Common-Mode Rejection Ratio (CMRR) | 82 | - | - | dB |
| Operating Temperature Range | -40 | - | 85 | °C |
| Supply Voltage Range | ±4.5 | - | ±18 | V |
Key Features
- Low quiescent current of 200 µA max, reducing power consumption.
- Low input bias current of 10 pA max, warmed up, ensuring minimal input current.
- Low input offset voltage of 2 mV max and drift of 20 µV/°C max, achieved through laser wafer drift trimming technology.
- High common-mode rejection ratio (CMRR) of 82 dB min, ensuring high linearity in buffer applications.
- Available in various packages including 8-lead plastic mini-DIP and surface-mount (SOIC) packages.
- Pinned out in a standard op amp configuration, making it pin-compatible with industry-standard op amps like LF441, TL061, and AD542.
Applications
The AD548KNZ is ideal for various applications requiring low power and high precision, such as:
- Battery-powered devices and precision instrument front ends.
- CMOS DAC buffers where low input offset voltage and drift are crucial.
- High impedance buffer applications where high linearity is necessary.
- General-purpose op amp applications requiring excellent DC and AC performance.
Q & A
- What is the maximum quiescent current of the AD548KNZ?
The maximum quiescent current is 200 µA. - What is the input bias current of the AD548KNZ when warmed up?
The input bias current is 10 pA max when warmed up. - What is the input offset voltage of the AD548KNZ?
The input offset voltage is 2 mV max. - What is the slew rate of the AD548KNZ?
The slew rate is 1.8 V/µs. - What is the unity gain bandwidth of the AD548KNZ?
The unity gain bandwidth is 1 MHz. - In what temperature range does the AD548KNZ operate?
The AD548KNZ operates in the temperature range of -40°C to +85°C. - What are the available packages for the AD548KNZ?
The AD548KNZ is available in 8-lead plastic mini-DIP and surface-mount (SOIC) packages. - Is the AD548KNZ pin-compatible with other op amps?
Yes, it is pin-compatible with industry-standard op amps like LF441, TL061, and AD542. - What is the common-mode rejection ratio (CMRR) of the AD548KNZ?
The CMRR is 82 dB min. - What are some typical applications of the AD548KNZ?
Typical applications include battery-powered devices, precision instrument front ends, CMOS DAC buffers, and high impedance buffer applications.
