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Exar Corporation

XR8038 Datasheet Preview

XR8038 Datasheet

Precision Waveform Generator

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...the analog plus companyTM
XR-8038A
Precision Waveform
Generator
FEATURES
D Low Frequency Drift, 50ppm/°C, Typical
D Simultaneous Sine, Triangle, and Square Wave
Outputs
D Low Sine Wave Distortion - THD ] 1%
D High FM and Triangle Linearity
D Wide Frequency Range 0.001Hz to 200KHz
D Variable Duty Cycle, 2% to 98%
D Low Distortion Variation with Temperature
APPLICATIONS
June 1997-3
D Precision Waveform Generation
D Sweep and FM Generation
D Tone Generation
D Instrumentation and Test Equipment Design
D Precision PLL Design
GENERAL DESCRIPTION
The XR-8038A is a precision waveform generator IC
capable of producing sine, square, triangular, sawtooth,
and pulse waveforms, with a minimum number of external
components and adjustments. The XR-8038A allows the
elimination of the external distortion adjusting resistor
which greatly improves the temperature drift of distortion,
as well as lowering external parts count. Its operating
frequency can be selected over eight decades of
frequency, from 0.001Hz to 200kHz, by the choice of
external R-C components. The frequency of oscillation is
highly stable over a wide range of temperature and supply
voltage changes. Both full frequency sweeping as well as
smaller frequency variations (FM) can be accomplished
with an external control voltage. Each of the three basic
waveform outputs, (i.e., sine, triangle and square) are
simultaneously available from independent output
terminals.
The XR-8038A monolithic waveform generator uses
advanced processing technology and Schottky-barrier
diodes to enhance its frequency performance.
ORDERING INFORMATION
Part No.
XR-8038ACP
Package
14 Lead 300 mil PDIP
Operating
Temperature Range
0°C to 70°C
Rev. 2.01
E1992
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017
1




Exar Corporation

XR8038 Datasheet Preview

XR8038 Datasheet

Precision Waveform Generator

No Preview Available !

XR-8038A
4
DCA1
5
DCA2
8
FM Sweep
FM Bias
7
VCC
6
Timing
Capacitor
10
Ia
Switch S
C External
2Ib
Triangle Wave
Output
Sine
Adjust
3 1 12
Buffer
2/3VCC
Sine
Converter
Sine Wave
Output
2
Square
Wave
9 Output
Comp1 Flip–
Flop
1/3VCC
Comp2
11
VEE
Figure 1. XR-8038A Block Diagram
Rev. 2.01
2


Part Number XR8038
Description Precision Waveform Generator
Maker Exar Corporation
Total Page 16 Pages
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