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- Recovers signal from 100 dB noise
- 2 MHz channel bandwidth
- 45 V/µs slew rate
- Low crosstalk: −120 dB at 1 kHz, −100 dB at 10 kHz
- Pin programmable, closed-loop gains of ±1 and ±2
- 0.05% closed-loop gain accuracy and match
- 100 µV channel offset voltage (AD630)
- 350 kHz full power bandwidth
- Chips available
The AD630 is a high precision balanced modulator/demodulator that combines a flexible commutating architecture with the accuracy and temperature stability afforded by laser wafer trimmed thin film resistors. A network of on-board applications resistors provides precision closed-loop gains of ±1 and ±2 with 0.05% accuracy (AD630B). These resistors may also be used to accurately configure multiplexer gains of 1, 2, 3, or 4. External feedback enables high gain or complex switched feedback topologies.
The AD630 can be thought of as a precision op amp with two independent differential input stages and a precision comparator that is used to select the active front end. The rapid response time of this comparator coupled with the high slew rate and fast settling of the linear amplifiers minimize switching distortion.
The AD630 is used in precision signal processing and instrumentation applications that require wide dynamic range. When used as a synchronous demodulator in a lock-in amplifier configuration, the AD630 can recover a small signal from 100 dB of interfering noise (see the Lock-In Amplifier Applications section). Although optimized for operation up to 1 kHz, the circuit is useful at frequencies up to several hundred kilohertz.
Other features of the AD630 include pin programmable frequency compensation; optional input bias current compensation resistors, common-mode and differential-offset voltage adjustment, and a channel status output that indicates which of the two differential inputs is active.
Product Highlights
- The application flexibility of the AD630 makes it the best choice for applications that require precisely fixed gain, switched gain, multiplexing, integrating-switching functions, and high speed precision amplification.
- The 100 dB dynamic range of the AD630 exceeds that of any hybrid or IC balanced modulator/demodulator and is comparable to that of costly signal processing instruments.
- The op amp format of the AD630 ensures easy implementation of high gain or complex switched feedback functions. The application resistors facilitate the implementation of most common applications with no additional parts.
- The AD630 can be used as a 2-channel multiplexer with gains of 1, 2, 3, or 4. The channel separation of 100 dB at 10 kHz approaches the limit achievable with an empty IC package.
- Laser trimming of the comparator and amplifying channel offsets eliminate the need for external nulling in most cases.
Applications
- Balanced modulation and demodulation
- Synchronous detection
- Phase detection
- Quadrature detection
- Phase sensitive detection
- Lock in amplification
- Square wave multiplication
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AD630
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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. View our quality and reliability program and certifications for more information.
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Apr 9, 2018
- 16_0026
Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices
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Jun 6, 2012
- 12_0066
Add capacity for Burn In of Hermetic, 883 & QMLQ/Class B devices at TSSI Cavite
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Nov 9, 2011
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Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
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- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
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Mar 13, 2008
- 07_0092
Wilmington Bipolar Process Change From 100mm to 150mm Wafer Diameter
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Feb 7, 2011
- 10_0003
Halogen Free Material Change for SOIC Wide Body Products Assembled at Amkor
AD630ARZ
AD630ARZ-RL
Mar 7, 2019
- 19_0046
Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
AD630JNZ
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AD630KNZ
PRODUCTION
Aug 19, 2009
- 07_0024
Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
AD630JNZ
PRODUCTION
AD630KNZ
PRODUCTION
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PCN
Apr 9, 2018
- 16_0026
Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices
5962-89807012A
5962-8980701RA
AD630SD/883B
AD630SE/883B
Jun 6, 2012
- 12_0066
Add capacity for Burn In of Hermetic, 883 & QMLQ/Class B devices at TSSI Cavite
5962-89807012A
5962-8980701RA
AD630SD/883B
AD630SE/883B
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
5962-89807012A
5962-8980701RA
AD630ADZ
AD630BDZ
AD630SD
AD630SD/883B
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Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
5962-89807012A
5962-8980701RA
AD630ADZ
AD630BDZ
AD630JNZ
PRODUCTION
AD630KNZ
PRODUCTION
AD630SD
AD630SD/883B
AD630SE/883B
Mar 13, 2008
- 07_0092
Wilmington Bipolar Process Change From 100mm to 150mm Wafer Diameter
5962-89807012A
5962-8980701RA
AD630ADZ
AD630ARZ
AD630ARZ-RL
AD630BDZ
AD630JNZ
PRODUCTION
AD630KNZ
PRODUCTION
AD630SCHIPS
AD630SD
AD630SD/883B
Feb 7, 2011
- 10_0003
Halogen Free Material Change for SOIC Wide Body Products Assembled at Amkor
Mar 7, 2019
- 19_0046
Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
AD630JNZ
PRODUCTION
AD630KNZ
PRODUCTION
Aug 19, 2009
- 07_0024
Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
AD630JNZ
PRODUCTION
AD630KNZ
PRODUCTION
Software & Part Ecosystem
Tools & Simulations 2
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.