Zakładka z wyszukiwarką danych komponentów |
|
AD598J Arkusz danych(PDF) 1 Page - Analog Devices |
|
AD598J Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 16 page PRODUCT DESCRIPTION The AD598 is a complete, monolithic Linear Variable Differen- tial Transformer (LVDT) signal conditioning subsystem. It is used in conjunction with LVDTs to convert transducer mechan- ical position to a unipolar or bipolar dc voltage with a high degree of accuracy and repeatability. All circuit functions are included on the chip. With the addition of a few external passive components to set frequency and gain, the AD598 converts the raw LVDT secondary output to a scaled dc signal. The device can also be used with RVDT transducers. The AD598 contains a low distortion sine wave oscillator to drive the LVDT primary. The LVDT secondary output consists of two sine waves that drive the AD598 directly. The AD598 operates upon the two signals, dividing their difference by their sum, producing a scaled unipolar or bipolar dc output. The AD598 uses a unique ratiometric architecture (patent pend- ing) to eliminate several of the disadvantages associated with traditional approaches to LVDT interfacing. The benefits of this new circuit are: no adjustments are necessary, transformer null voltage and primary to secondary phase shift does not affect sys- tem accuracy, temperature stability is improved, and transducer interchangeability is improved. The AD598 is available in two performance grades: Grade Temperature Range Package AD598JR 0 °C to +70°C 20-Pin Small Outline (SOIC) AD598AD –40 °C to +85°C 20-Pin Ceramic DIP It is also available processed to MIL-STD-883B, for the military range of –55 °C to +125°C. FUNCTIONAL BLOCK DIAGRAM OSC AMP AMP VOUT LVDT EXCITATION (CARRIER) 11 17 10 16 2 3 FILTER A–B A+B VB VA AD598 REV. A 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 LVDT Signal Conditioner AD598 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 PRODUCT HIGHLIGHTS 1. The AD598 offers a monolithic solution to LVDT and RVDT signal conditioning problems; few extra passive com- ponents are required to complete the conversion from me- chanical position to dc voltage and no adjustments are required. 2. The AD598 can be used with many different types of LVDTs because the circuit accommodates a wide range of input and output voltages and frequencies; the AD598 can drive an LVDT primary with up to 24 V rms and accept sec- ondary input levels as low as 100 mV rms. 3. The 20 Hz to 20 kHz LVDT excitation frequency is deter- mined by a single external capacitor. The AD598 input sig- nal need not be synchronous with the LVDT primary drive. This means that an external primary excitation, such as the 400 Hz power mains in aircraft, can be used. 4. The AD598 uses a ratiometric decoding scheme such that primary to secondary phase shifts and transducer null voltage have absolutely no effect on overall circuit performance. 5. Multiple LVDTs can be driven by a single AD598, either in series or parallel as long as power dissipation limits are not exceeded. The excitation output is thermally protected. 6. The AD598 may be used in telemetry applications or in hos- tile environments where the interface electronics may be re- mote from the LVDT. The AD598 can drive an LVDT at the end of 300 feet of cable, since the circuit is not affected by phase shifts or absolute signal magnitudes. The position output can drive as much as 1000 feet of cable. 7. The AD598 may be used as a loop integrator in the design of simple electromechanical servo loops. FEATURES Single Chip Solution, Contains Internal Oscillator and Voltage Reference No Adjustments Required Insensitive to Transducer Null Voltage Insensitive to Primary to Secondary Phase Shifts DC Output Proportional to Position 20 Hz to 20 kHz Frequency Range Single or Dual Supply Operation Unipolar or Bipolar Output Will Operate a Remote LVDT at Up to 300 Feet Position Output Can Drive Up to 1000 Feet of Cable Will Also Interface to an RVDT Outstanding Performance Linearity: 0.05% of FS max Output Voltage: 11 V min Gain Drift: 50 ppm/ C of FS max Offset Drift: 50 ppm/ C of FS max |
Podobny numer części - AD598J |
|
Podobny opis - AD598J |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |