SWR200C

SWR200 RoHS Precision Sine Wave Reference COMPLIANT FEATURES Very High Accuracy: +7.071Vrms 0.5% Extremely Low Drift: 20ppm/C (-55C to +125C) Excellent Stability: 10ppm/1000 Hrs. Typical Low Distortion: 0.1%THD F = 3300 Hz Hermetic 14-pin Ceramic DIP Military Processing Option APPLICATIONS Transducer Excitation High Resolution Servo Systems High Precision Test and Measurement Instruments AC Voltage Standard L or R Reference VDT VDT Multiplying D/A Reference DESCRIPTION SWR200 is a Precision Sine Wave Reference providing an ultra stable sine wave output of +7.071V at 0.5% initial accuracy and temperature coefficient as low as 20ppm/C over the full military temperature range. The extreme accuracy is made possible by a chopper-based AGC circuit. The temperature characteris- tic of the chopper circuit compensates the typical nonlinearity of the internal DC Zener reference, resulting in a nearly linear amplitude-temperature characteristic. Frequency of the SWR200 is programmable with two external capacitors. The SWR200 is available in a 14-pin bottom braze package. They are hermetically sealed and M ver- sions are screened for high reliability and quality. SWR200 is well suited for any application requiring a stable sine wave source. The SWR200 can be used as a reference source in precision sensing systems based on L or R position sensors. A programmable AC VDT VDT reference can be constructed using the SWR200 as a reference for a high accuracy multiplying Digital to Ana- log Converter. SELECTION GUIDE Temperature Type Output (TYP) Operating Package Range SWR200C +7.071V -25C to +85C DIP SWR200M +7.071V -55C to +125C DIP Apex Microtechnology Inc. Dec 2018 www.apexanalog.com All rights reserved SWR200DS Rev LSWR200 TYPICAL CONNECTION Figure 1: Typical Connection PIN DESCRIPTIONS Pin Number Name Description Frequency selection capacitor connection C . See applicable selection. 1, 2 C1 1 -V 3 The negative supply voltage connection. PS 7 GND Ground. 8 REF GND Provided for accurate ground sensing. Internally connected to GND. 9 OUT The output. +V 12 The positive supply voltage connection. PS Frequency selection capacitor connection C . See applicable selection. 13, 14 C2 2 Optional frequency range expansion. Connect C between pins 4 and 5 of value 3 4 C3 approximately 2 x C . 1 Extended Range Optional frequency range expansion. See Typical Application drawing for connec- 5 Connection tion. Optional frequency range expansion. Connect C between pins 5 and 6 of value 4 6 C4 approximately 20 x C . 2 10, 11 NC No connection. 2 SWR200DS Rev L