Alternative Parts
ADA4898-2
High Voltage, Low Noise, Low Distortion, Unity Gain Stable, High Speed, Dual 8-Lead Op Amp
Overview
Features and Benefits
- Low Noise
- 0.9 nV/√Hz typ (1.2 nV/√Hz max) Input Voltage Noise at 1 kHz
- 50 nV p-p Input Voltage Noise, 0.1 Hz to 10 Hz
- Low Distortion
-120 dB Total Harmonic Distortion at 20 kHz - Excellent DC Precision
80 µV max Input Offset Voltage
1.0 µV/°C VOS Drift
- Excellent AC Characteristics
-
800 ns Settling Time to 16 Bits (10 V Step)
110 MHz Gain Bandwidth (G = 1000)
8 MHz Bandwidth (G = 10)
280 kHz Full Power Bandwidth at 20 V p-p
20 V/µs Slew Rate - Specified for ±5 V and ±15 V Power Supplies
- High Output Drive Current of 50 mA
Product Details
The AD797 is a very low noise, low distortion operational amplifier ideal for use as a preamplifier. The low noise of 0.9 nV√Hz and low total harmonic distortion of -120 dB at audio bandwidths give the AD797 the wide dynamic range necessary for preamps in microphones and mixing consoles.
Furthermore, the AD797's excellent slew rate of 20 V/µs and 110 MHz gain bandwidth make it highly suitable for low frequency ultrasound applications.
The AD797 is also useful in IR and Sonar Imaging applications where the widest dynamic range is necessary. The low distortion and 16-bit settling time of the AD797 make it ideal for buffering the inputs to Sigma Delta ADCs or the outputs of high resolution DACs especially when they are used in critical applications such as seismic detection and spectrum analyzers. Key features such as a 50 mA output current drive and the specified power supply voltage range of ±5 to ±15 volts make the AD797 an excellent general purpose amplifier.
APPLICATIONS
- Professional audio preamplifiers
- IR, CCD, and sonar imaging systems
- Spectrum analyzers
- Ultrasound preamplifiers
- Seismic detectors
- Σ-Δ ADC/DAC buffers
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation
Frequently Asked Questions (1)
Tools & Simulations
SPICE Models
AD797 SPICE Macro Models
Design Tools
An online tool to illustrate range, gain and accuracy issues with Op Amp.
Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.
Reference Materials
Technical Articles (6)
Analog Dialogue
Videos (1)
LIGO is Ahead of What's Possible
Rarely Asked Questions (2)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Sample & Buy
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Sampling:
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