Overview
The AD843KNZ is a high-speed operational amplifier produced by Analog Devices Inc. This device is part of the AD843 series, known for its fast settling time and wide bandwidth. The AD843KNZ combines the benefits of low input bias currents characteristic of FET input amplifiers with high-speed performance, making it suitable for various high-frequency applications.
The amplifier features a 34 MHz unity gain bandwidth, a 135 ns settling time to within 0.01% of the final value for a 10 volt step, and a 250 V/µs slew rate. These specifications ensure excellent performance in high-speed sample-and-hold applications, high-speed integrators, and high-bandwidth active filters.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Unity Gain Bandwidth | 34 | MHz |
| Settling Time (to 0.01% for 10V step) | 135 | ns |
| Slew Rate | 250 | V/µs |
| Input Offset Voltage | 1 | mV (max) |
| Input Bias Current | 0.6 | nA (typ) |
| Input Voltage Noise | 19 | nV/√Hz |
| Open Loop Gain | 30 V/mV | |
| Output Current | 50 | mA (min) |
| Supply Current | 13 | mA (max) |
| Operating Temperature Range | –40°C to +85°C | |
| Supply Voltage Range | ±4.5V to ±18V |
Key Features
- Fast settling time of 135 ns to within 0.01% of the final value for a 10 volt step.
- High unity gain bandwidth of 34 MHz.
- Low input bias current of 0.6 nA.
- High slew rate of 250 V/µs.
- No external compensation required for stability.
- Available in various packages including 8-Pin Plastic Mini-DIP, Cerdip, 16-Pin SOIC, 20-Pin LCC, and 12-Pin Hermetic Metal Can.
Applications
- High-speed sample-and-hold amplifiers.
- High-speed integrators.
- High-bandwidth active filters.
- High-frequency signal conditioning circuits.
Q & A
- What is the unity gain bandwidth of the AD843KNZ?
The unity gain bandwidth of the AD843KNZ is 34 MHz.
- What is the settling time of the AD843KNZ for a 10V step?
The settling time is 135 ns to within 0.01% of the final value.
- What is the slew rate of the AD843KNZ?
The slew rate is 250 V/µs.
- What is the input bias current of the AD843KNZ?
The input bias current is 0.6 nA (typical).
- Does the AD843KNZ require external compensation for stability?
No, the AD843KNZ does not require external compensation and remains stable over its full operating temperature range.
- What are the typical operating temperature ranges for the AD843KNZ?
The AD843KNZ is rated over the industrial temperature range of –40°C to +85°C.
- What is the supply voltage range for the AD843KNZ?
The supply voltage range is ±4.5V to ±18V.
- What are some common applications of the AD843KNZ?
Common applications include high-speed sample-and-hold amplifiers, high-speed integrators, high-bandwidth active filters, and high-frequency signal conditioning circuits.
- In what packages is the AD843KNZ available?
The AD843KNZ is available in various packages including 8-Pin Plastic Mini-DIP, Cerdip, 16-Pin SOIC, 20-Pin LCC, and 12-Pin Hermetic Metal Can.
- What is the maximum output current of the AD843KNZ?
The maximum output current is 50 mA (minimum).
