THALER SWR200M, SWR200C Datasheet

SWR200

Precision
Sine Wave Reference

THALER CORPORATION • 2015 N. FORBES BOULEVARD • TUCSON, AZ. 85745 • [phone]

FEATURES

•• VERY HIGH ACCURACY: 7.071 Vrms ±0.05%

•• EXTREMELY LOW DRIFT:

3 ppm/°C (-55°C to +125°C)

•• EXCELLENT STABILITY: 10 ppm/1000 Hrs. Typ.

•• LOW DISTORTION:

0.1% THD @ f = 3300 Hz

•• HERMETIC 14-PIN CERAMIC DIP

•• MILITARY PROCESSING OPTION

DESCRIPTION

SWR200 is a Precision Sine Wave Reference
providing an ultra stable sine wave output of

7.071V at ±0.05% initial accuracy and
temperature coefficient as low as 3 ppm/°C over
the full military temperature range. The extreme
accuracy is made possible by a chopper-based
AGC circuit. The temperature characteristic 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.

APPLICATIONS

•• TRANSDUCER EXCITATION

•• HIGH RESOLUTION SERVO SYSTEMS

•• HIGH PRECISION TEST and

MEASUREMENT INSTRUMENTS

•• AC VOLTAGE STANDARD

•• LVDT OR RVDT REFERENCE

•• MULTIPLYING D/A REFERENCE

SELECTION GUIDE

Type

SWR200C 7.071V -25°C to +85°C DIP

Output

(Typ.)

Temperature

Operating Range

Package

The SWR200 is available in a 14-pin bottom
braze package. They are hermetically sealed and
"M" versions 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 LVDT or RVDT
position sensors. A programmable AC reference
can be constructed using the SWR200 as a
reference for a high accuracy multiplying Digital to
Analog Converter.

SWR200M 7.071V -55°C to +125°C DIP

SWR200DS REV. D JUNE 1995

ELECTRICAL SPECIFICATIONS

Vps =±15V, T = 25°C, RL = 10KΩ unless otherwise noted.

SWR200

MODEL C M
PARAMETERS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
ABSOLUTE MAXIMUM RATINGS

Power Supply ±13.5 15 ±22 * * V
Operating Temperature -25 85 -55 125 °C
Storage Temperature -65 150 * * °C
Short Circuit Protection Continuous *

OUTPUT VOLTAGE 7.071 * Vrms
OUTPUT VOLTAGE ERRORS

Initial Error 0.05 * %
Warmup Drift 100 * µV
DC Offset 3 * mV
DC Offset Over Temp. 3 18 * * µV/°C
Tmin - Tmax 1 2.0 1 3.0 ppm/°C
Long-Term Stability 10 * ppm/°C

OUTPUT CURRENT

Range ±10 * mA

REGULATION

Line 10 * ppm/V
Load 3 * ppm/mA

POWER SUPPLY CURRENTS

+PS 10.5 13 * * mA

-PS 9.5 13 * * mA

DISTORTION 0.5 * %
FREQUENCY

-5

10

Range (f)

f =

∇

vs. Temperaturef

f

C1 C2

.98 1 1.02 * * * Hz

400 10K * Hz

15 * ppm/°C

NOTES:

3.Pin 8 is internally connected to Pin 7 and can be

*Same as C Models.

1.Using the box method, the specified value is the
maximum deviation from the output voltage at 25°C
over the specified operating temperature range.

2.The specified values are unloaded.

used as Ref. GND.

4. The frequency range can be extended to any desired
lower value by using 2 external AGC capacitors (see
AN-3).

5.The increase in distrotion at lower frequencies can be
eliminated by using external AGC capacitors (see
AN-3).

SWR200DS REV. D JUNE 1995