Overview
The AD843BQ, produced by Analog Devices Inc., is a high-performance, fast-settling operational amplifier. This device combines the benefits of low input bias currents characteristic of FET input amplifiers with high bandwidth and fast settling times. The AD843BQ is part of the AD843 series, which is known for its wide bandwidth and fast settling capabilities, making it suitable for various high-speed applications.
Key Specifications
| Parameter | Value |
|---|---|
| Unity Gain Bandwidth | 34 MHz |
| Fast Settling Time (to 0.01% of final value for a 10V step) | 135 ns |
| Slew Rate | 250 V/µs |
| Input Offset Voltage | 1 mV max (AD843K/B) |
| Input Bias Current | 0.6 nA typ |
| Input Voltage Noise | 19 nV/√Hz |
| Open Loop Gain | 30 V/mV into a 500 Ω Load |
| Output Current | 50 mA min |
| Supply Current | 13 mA max |
| Operating Temperature Range | –40°C to +85°C (Industrial Grade) |
| Package Types | 8-Pin Plastic Mini-DIP, 8-Pin Cerdip, 16-Pin SOIC, 20-Pin LCC, 12-Pin Hermetic Metal Can |
Key Features
- Low input bias currents (0.6 nA) characteristic of FET input amplifiers.
- High bandwidth of 34 MHz and fast settling time of 135 ns to 0.01% of final value for a 10V step.
- High slew rate of 250 V/µs.
- No external compensation required; stable at gains of 1 or greater.
- Full power bandwidth of 3.9 MHz.
- Available in various package types including 8-Pin Plastic Mini-DIP, 8-Pin 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 AD843BQ?
The unity gain bandwidth of the AD843BQ is 34 MHz. - What is the settling time of the AD843BQ for a 10V step?
The settling time is 135 ns to 0.01% of the final value for a 10V step. - What is the slew rate of the AD843BQ?
The slew rate is 250 V/µs. - What is the input bias current of the AD843BQ?
The input bias current is 0.6 nA typical. - Does the AD843BQ require external compensation?
No, the AD843BQ does not require external compensation and remains stable over its full operating temperature range. - What are the typical applications of the AD843BQ?
The AD843BQ is typically used in high-speed sample-and-hold amplifiers, high-speed integrators, high bandwidth active filters, and high-frequency signal conditioning circuits. - What are the available package types for the AD843BQ?
The AD843BQ is available in 8-Pin Plastic Mini-DIP, 8-Pin Cerdip, 16-Pin SOIC, 20-Pin LCC, and 12-Pin Hermetic Metal Can packages. - What is the operating temperature range for the industrial grade AD843BQ?
The operating temperature range for the industrial grade AD843BQ is –40°C to +85°C. - What is the maximum supply current of the AD843BQ?
The maximum supply current is 13 mA. - What is the open loop gain of the AD843BQ into a 500 Ω load?
The open loop gain is 30 V/mV into a 500 Ω load.
