Electronic Components Datasheet Search |
|
AD598JR Datasheet(PDF) 11 Page - Analog Devices |
|
AD598JR Datasheet(HTML) 11 Page - Analog Devices |
11 / 16 page AD598 REV. A –11– EXC 1 EXC 2 LEV 1 LEV 2 FREQ 1 FREQ 2 B1 FILT B2 FILT OFFSET 1 OFFSET 2 SIG REF SIG OUT FEEDBACK OUT FILT A1 FILT A2 FILT AD598 –VS +VS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 17 18 19 20 V B V A –V +V 0.015 µF 0.1 µF 15k 15k 82.5k Ω 0.33 µF 0.1 µF SCHAEVITZ E 100 MECHANICAL POSITION INPUT EXC 1 EXC 2 LEV 1 LEV 2 FREQ 1 FREQ 2 B1 FILT B2 FILT OFFSET 1 OFFSET 2 SIG REF SIG OUT FEEDBACK OUT FILT A1 FILT A2 FILT AD598 –VS +VS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 17 18 19 20 V B V A –V +V SCHAEVITZ E 100 MECHANICAL POSITION INPUT 0.1 µF 82.5k Ω 0.33 µF 0.1 µF 15k 15k EXC 1 EXC 2 LEV 1 LEV 2 FREQ 1 FREQ 2 B1 FILT B2 FILT OFFSET 1 OFFSET 2 SIG REF SIG OUT FEEDBACK OUT FILT A1 FILT A2 FILT AD598 –VS +VS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 17 18 19 20 V B V A –V +V SCHAEVITZ E 100 MECHANICAL POSITION INPUT 0.1 µF 82.5k Ω 0.33 µF 0.1 µF MASTER SLAVE 1 SLAVE 2 LVDT LVDT LVDT Figure 21. Multiple LVDTs—Synchronous Operation HIGH RESOLUTION POSITION-TO-FREQUENCY CIRCUIT In the circuit shown in Figure 22, the AD598 is combined with an AD652 voltage-to-frequency (V/F) converter to produce an effective, simple data converter which can make high resolution measurements. This circuit transfers the signal from the LVDT to the V/F con- verter in the form of a current, thus eliminating the errors nor- mally caused by the offset voltage of the V/F converter. The V/F converter offset voltage is normally the largest source of error in such circuits. The analog input signal to the AD652 is converted to digital frequency output pulses which can be counted by simple digital means. This circuit is particularly useful if there is a large degree of mechanical vibration (hum) on the position to be measured. The hum may be completely rejected by counting the digital fre- quency pulses over a gate time (fixed period) equal to a multiple of the hum period. For the effects of the hum to be completely rejected, the hum must be a periodic signal. EXC 1 EXC 2 LEV 1 LEV 2 FREQ 1 FREQ 2 B1 FILT B2 FILT OFFSET 1 OFFSET 2 SIG REF SIG OUT FEEDBACK OUT FILT A1 FILT A2 FILT AD598 –VS +VS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 17 18 19 20 V B V A 0.015 µF 0.1 µF 0.33 µF 0.1 µF SCHAEVITZ E 100 MECHANICAL POSITION INPUT –Vs 0.1 µF GND 0.1 µF +Vs 1 2 3 4 5 6 7 8 15 14 13 12 11 9 10 16 +VS 2.5k +VS FREQ OUT 500KHZ CK 0.02 µF AD652 SYNCHRONOUS VOLTAGE TO FREQUENCY CONVERTER +VS TRIM TRIM OP AMP OUT OP AMP “–” OP AMP “+” 10 VOLT INPUT –VS COS CLOCK INPUT FREQ OUT DIGITAL GND ANALOG GND COMP“–” COMP“+” COMP REF LVDT Figure 22. High Resolution Position-to-Frequency Converter |
Similar Part No. - AD598JR |
|
Similar Description - AD598JR |
|
|
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 |