Overview
The AD841SE from Analog Devices Inc. is a high-speed, high-precision operational amplifier designed for a wide range of applications requiring fast signal processing and high accuracy. It is part of the Analog Devices family of wide bandwidth operational amplifiers, which also includes the AD842. The AD841SE is fabricated using Analog Devices’ junction isolated complementary bipolar (CB) process, allowing for a combination of DC precision and wideband AC performance. This amplifier is notable for its fast settling time, high slew rate, and low input voltage noise, making it ideal for high-frequency signal conditioning, video and pulse amplifiers, and data acquisition systems.
Key Specifications
| Parameter | Value |
|---|---|
| Gain Bandwidth Product | 40 MHz |
| Slew Rate | 300 V/µs |
| Input Bias Current | 3.5 µA (typical), 8 µA (maximum) |
| Input Offset Voltage | 1 mV (maximum), 500 µV (typical for some grades) |
| Input Voltage Noise | 15 nV/√Hz |
| Output Current Drive | 50 mA minimum |
| Supply Current | 12 mA maximum |
| Dual Supply Voltage | ±15 V |
| Settling Time | 110 ns to within 0.01% of final value for a 10 V step |
Key Features
- High slew rate and fast settling time, making it ideal for DAC and ADC buffers, video instrumentation, and high-frequency signal conditioning.
- Precision amplifier with accuracy to 0.01% or better and wide bandwidth performance.
- Thermally balanced layout and fast CB process allow rapid settling without long tails.
- Laser wafer trimming reduces input offset voltage, eliminating the need for external offset nulling in many applications.
- No external compensation required for stability over the full operating temperature range.
- Low quiescent current and low input voltage noise.
Applications
- High-speed signal conditioning.
- Video and pulse amplifiers.
- Data acquisition systems.
- Line drivers.
- Active filters.
- High-speed DAC and ADC buffer amplifiers.
- Wide bandwidth circuitry.
Q & A
- What is the gain bandwidth product of the AD841SE?
The gain bandwidth product of the AD841SE is 40 MHz. - What is the slew rate of the AD841SE?
The slew rate of the AD841SE is 300 V/µs. - What is the typical input bias current of the AD841SE?
The typical input bias current of the AD841SE is 3.5 µA. - What is the maximum input offset voltage of the AD841SE?
The maximum input offset voltage of the AD841SE is 1 mV. - How long does the AD841SE take to settle to within 0.01% of its final value for a 10 V step?
The AD841SE settles to within 0.01% of its final value in 110 ns for a 10 V step. - Does the AD841SE require external compensation for stability?
No, the AD841SE does not require external compensation for stability. - What is the maximum supply current of the AD841SE?
The maximum supply current of the AD841SE is 12 mA. - What are some common applications of the AD841SE?
The AD841SE is commonly used in high-speed signal conditioning, video and pulse amplifiers, data acquisition systems, line drivers, active filters, and as buffer amplifiers for DACs and ADCs. - What is the input voltage noise of the AD841SE?
The input voltage noise of the AD841SE is 15 nV/√Hz. - What is the minimum output current drive capability of the AD841SE?
The minimum output current drive capability of the AD841SE is 50 mA.
