Overview
The AD846AN, produced by Analog Devices Inc., is a high-performance, monolithic operational amplifier. It is classified as a current-feedback or transimpedance amplifier but can be used similarly to traditional op amps, offering significant performance benefits. The AD846AN employs Analog Devices' junction isolated complementary bipolar (CB) process, achieving true '12-bit' (0.01%) precision on critical AC and DC parameters. This level of precision is unmatched by amplifiers fabricated using other processes.
The AD846AN is particularly noted for its high speed and low distortion, making it ideal for various high-speed applications. It is available in different performance grades and package types, including plastic mini-DIP and hermetic cerdip packages.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Small Signal Bandwidth (AV = –1) | 80 | MHz | ||
| Slew Rate | 450 | V/μs | ||
| Full Power Bandwidth (20 V p-p, RL = 500 Ω) | 6.8 | MHz | ||
| Settling Time (10 V Step to 0.01%) | 110 | ns | ||
| Differential Gain (@ 4.4 MHz) | <0.01% | % | ||
| Differential Phase (@ 4.4 MHz) | <0.028° | ° | ||
| Total Harmonic Distortion (THD) (@ 100 kHz) | 0.0005% | % | ||
| Input Offset Voltage (B Grade) | 25 | 75 | μV | |
| Input Offset Drift (B Grade) | 0.8 | 3.5 | μV/°C | |
| Quiescent Supply Current | 6.5 | mA | ||
| Supply Voltage Range | ±5 V to ±18 V | V | ||
| Operating Temperature Range (B Grade) | -40 | +85 | °C |
Key Features
- High speed performance with a slew rate of 450 V/μs and a small signal bandwidth of 80 MHz (AV = –1).
- True '12-bit' (0.01%) precision on critical AC and DC parameters, ensuring high accuracy in various applications.
- Fast settling times: 110 ns to 0.01% for a 10 V step, and 80 ns to 0.1%.
- Low distortion: differential gain <0.01% and differential phase <0.028° at 4.4 MHz.
- High open-loop transimpedance: 200 MΩ into a 500 Ω load, ensuring true 12-bit DC accuracy.
- Available in plastic mini-DIP and hermetic cerdip packages, with 'A' and 'S' grade chips for different temperature ranges.
Applications
- High Speed DAC Buffers: Ideal for buffering precision high-speed DACs due to its high speed and low distortion.
- Flash ADC Buffers: Suitable for amplifying the residue in multiple-pass analog-to-digital converters.
- Error Amplifiers: Used in multiflash ADCs for high precision and speed.
- Coaxial Cable Drivers: Offers low distortion and high slew rate, making it suitable for line driver and video buffer applications.
- High Performance Audio Circuitry: Its high speed and low distortion make it a good choice for high-performance audio applications).
Q & A
- What is the slew rate of the AD846AN?
The AD846AN has a slew rate of 450 V/μs).
- What is the small signal bandwidth of the AD846AN?
The small signal bandwidth of the AD846AN is 80 MHz (AV = –1)).
- What is the settling time for a 10 V step to 0.01% accuracy?
The settling time for a 10 V step to 0.01% accuracy is 110 ns).
- What is the input offset voltage for the B grade AD846AN?
The input offset voltage for the B grade AD846AN is 75 μV max).
- What are the typical supply current and voltage range for the AD846AN?
The typical supply current is 6.5 mA, and the supply voltage range is ±5 V to ±18 V).
- In what packages is the AD846AN available?
The AD846AN is available in plastic mini-DIP and hermetic cerdip packages).
- What are the key applications of the AD846AN?
The AD846AN is used in high-speed DAC buffers, flash ADC buffers, error amplifiers, coaxial cable drivers, and high-performance audio circuitry).
- What is the operating temperature range for the B grade AD846AN?
The operating temperature range for the B grade AD846AN is -40°C to +85°C).
- Does the AD846AN meet military temperature standards?
The AD846S grade meets the full military temperature range of -55°C to +125°C and is available processed to MIL-STD-883B, Rev C).
- What kind of screening is available for the AD846AN?
Extended reliability PLUS screening is available, which includes 168 hour burn-in and other environmental and physical tests).
