Electronic Components Datasheet Search |
|
AD630K Datasheet(PDF) 1 Page - Analog Devices |
|
AD630K Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page FUNCTIONAL BLOCK DIAGRAM CM OFF ADJ CM OFF ADJ DIFF OFF ADJ DIFF OFF ADJ 6 3 4 5 2.5k AMP A 2.5k AMP B –V 10k 10k 17 5k 8 9 10 COMP 19 18 1 15 7 16 14 13 11 12 RINA CHA+ CHA– RINB CHB+ CHB– SEL B SEL A 2 20 COMP +VS VOUT RB RF RA CHANNEL STATUS B/A –VS AD630 A B REV. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Balanced Modulator/Demodulator AD630 PRODUCT DESCRIPTION The AD630 is a high precision balanced modulator which com- bines a flexible commutating architecture with the accuracy and temperature stability afforded by laser wafer trimmed thin-film resistors. Its signal processing applications include balanced modulation and demodulation, synchronous detection, phase detection, quadrature detection, phase sensitive detection, lock-in amplification and square wave multiplication. 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. Alternatively, external feedback may be employed allowing the designer to implement his own high gain or complex switched feedback topologies. The AD630 may be thought of as a precision op amp with two independent differential input stages and a precision comparator which 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. In addition, the AD630 has extremely low crosstalk between chan- nels of –100 dB @ 10 kHz. The AD630 is intended for use in precision signal processing and instrumentation applications requiring wide dynamic range. When used as a synchronous demodulator in a lock-in amplifier configuration, it can recover a small signal from 100 dB of inter- fering noise (see lock-in amplifier application). 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 resis- tors, common-mode and differential-offset voltage adjustment, and a channel status output which indicates which of the two differential inputs is active. This device is now available to Stan- dard Military Drawing (DESC) numbers 5962-8980701RA and 5962-89807012A. PRODUCT HIGHLIGHTS 1. The configuration of the AD630 makes it ideal for signal processing applications such as: balanced modulation and demodulation, lock-in amplification, phase detection, and square wave multiplication. 2. The application flexibility of the AD630 makes it the best choice for many applications requiring precisely fixed gain, switched gain, multiplexing, integrating-switching functions, and high-speed precision amplification. 3. The 100 dB dynamic range of the AD630 exceeds that of any hybrid or IC balanced modulator/demodulator and is compa- rable to that of costly signal processing instruments. 4. The op-amp format of the AD630 ensures easy implementa- tion of high gain or complex switched feedback functions. The application resistors facilitate the implementation of most common applications with no additional parts. 5. The AD630 can be used as a two channel multiplexer with gains of +1, +2, +3 or +4. The channel separation of 100 dB @ 10 kHz approaches the limit which is achievable with an empty IC package. 6. The AD630 has pin-strappable frequency compensation (no external capacitor required) for stable operation at unity gain without sacrificing dynamic performance at higher gains. 7. Laser trimming of comparator and amplifying channel offsets eliminates the need for external nulling in most cases. FEATURES Recovers Signal from +100 dB Noise 2 MHz Channel Bandwidth 45 V/ s Slew Rate –120 dB Crosstalk @ 1 kHz Pin Programmable Closed Loop Gains of 1 and 2 0.05% Closed Loop Gain Accuracy and Match 100 V Channel Offset Voltage (AD630BD) 350 kHz Full Power Bandwidth Chips Available One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 |
Similar Part No. - AD630K |
|
Similar Description - AD630K |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |