AD598AD Analog Devices Inc, AD598AD Datasheet
AD598AD
Specifications of AD598AD
Available stocks
Related parts for AD598AD
AD598AD Summary of contents
Page 1
... The AD598 is available in two performance grades: Grade Temperature Range Package AD598JR +70 C 20-Pin Small Outline (SOIC) AD598AD – +85 C 20-Pin Ceramic DIP It is also available processed to MIL-STD-883B, for the military range of – +125 C. REV. A Information furnished by Analog Devices is believed to be accurate and reliable ...
Page 2
... V rms 2.1 1.2 2.1 V rms 4.1 2.6 4.1 V rms rms 600 ppm rms 12 mA rms 60 mA 100 30 100 mV 20k 20 20k Hz 200 ppm/ C –50 dB 3.5 0.1 3.5 V rms 200 kHz 17 +70 C –40 +85 C AD598AD REV. A ...
Page 3
... Storage Temperature Range R Package . . . . . . . . . . . . . . . . . . . . . . . . . – +150 C D Package . . . . . . . . . . . . . . . . . . . . . . . . . – +150 C Operating Temperature Range AD598JR . . . . . . . . . . . . . . . . . . . . . . . . . . . . +70 C AD598AD . . . . . . . . . . . . . . . . . . . . . . . . . . – +85 C Lead Temperature Range (Soldering 60 sec +300 C Power Dissipation 1.2 W Derates Above + mW/ C REV 1.65% of full scale. Note that 1000 ppm of full scale equals 0.1% of full scale. ...
Page 4
AD598–Typical Characteristics 40 OFFSET PSRR 12–15V 0 OFFSET PSRR 15–18V –40 GAIN PSRR 12–15V –80 –120 GAIN PSRR 15–18V –160 –200 –240 –60 – TEMPERATURE – C Figure 1. Gain and Offset PSRR vs. Temperature 5 0 ...
Page 5
This technique uses the pri- mary excitation voltage as a phase reference to determine the polarity of the output voltage. There are a number of problems associated with this technique such as (1) producing a ...
Page 6
AD598 DESIGN PROCEDURE DUAL SUPPLY OPERATION Figure 7 shows the connection method with dual 15 volt power supplies and a Schaevitz E100 LVDT. This design procedure can be used to select component values for other LVDTs as well. The procedure ...
Page 7
C2, C3 and C4 are a function of the desired bandwidth of the AD598 position measurement subsystem. They should be nominally equal values. – Farad Hz/f If the desired system bandwidth is ...
Page 8
AD598 13. Load current through R returns to the junction of R5 and L R6, and flows back Under maximum load condi- PS tions, make sure the voltage drop across R5 is met as defined in Step ...
Page 9
Figure 15. Gain and Phase Characteristics vs. Frequency (0 kHz–10 kHz) 1000 100 10 1 0.1 0.01 0.1 C2, C3, C4 – F Figure 16. Output Voltage Ripple vs. Filter Capacitance REV. A 1000 100 ...
Page 10
AD598–Applications PROVING RING-WEIGH SCALE Figure 20 shows an elastic member (steel proving ring) com- bined with an LVDT to provide a means of measuring very small loads. Figure 19 shows the electrical circuit details. The advantage of using a Proving ...
Page 11
MASTER – – OFFSET 1 19 EXC 1 OFFSET EXC LEV 1 SIG REF 82. LEV 2 SIG OUT 0.015 FEEDBACK ...
Page 12
AD598 The V/F converter is currently set up for unipolar operation. The AD652 data sheet explains how to set up for bipolar opera- tion. Note that when the LVDT core is centered, the output fre- quency is zero. When the ...
Page 13
OUTPUT MECHANICAL POSITION SCHAEVITZ E 100 LVDT 0.015 F 0.1 F INPUT MECHANICAL POSITION SCHAEVITZ E 100 LVDT 0.015 F 0 LVDT 1 SCHAEVITZ E 100 C D LVDT 2 SCHAEVITZ E 100 REV. A MASS ON ...
Page 14
AD598 PRECISION DIFFERENTIAL GAGING The circuit shown in Figure 26 is functionally similar to the dif- ferential gaging circuit shown in Figure 25. In contrast to Figure 25, it provides a means of independently adjusting the scale fac- tor of ...
Page 15
OPERATION WITH A HALF-BRIDGE TRANSDUCER Although the AD598 is not intended for use with a half-bridge type transducer, it may be made to function with degraded performance. A half-bridge type transducer is a popular transducer. It works in a similar ...
Page 16
AD598 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 20-Pin Sized Brazed Ceramic DIP 20-Lead Wide Body Plastic SOIC (R) Package –16– REV. A ...