XR-2209
...the analog plus
Voltage-Controlled
Oscillator
company TM
June 1997–3
FEATURES
APPLICATIONS
D Excellent Temperature Stability (20ppm/°C)
D Voltage and Current-to-Frequency Conversion
D Linear Frequency Sweep
D Stable Phase-Locked Loop
D Wide Sweep Range (1000:1 Minimum)
D Wide Supply Voltage Range (+4V to +13V)
D Waveform Generation
Triangle, Sawtooth, Pulse, Squarewave
D Low Supply Sensitivity (0.1% /V)
D FM and Sweep Generation
D Wide Frequency Range (0.01Hz to 1MHz)
D Simultaneous Triangle and Squarewave Outputs
GENERAL DESCRIPTION
The XR-2209 is a monolithic voltage-controlled oscillator
(VCO) integrated circuit featuring excellent frequency
stability and a wide tuning range. The circuit provides
simultaneous triangle and squarewave outputs over a
frequency range of 0.01Hz to 1MHz. It is ideally suited for
FM, FSK, and sweep or tone generation, as well as for
phase-locked loop applications.
The oscillator of the XR-2209 has a typical drift
specification of 20ppm/°C. The oscillator frequency can
be linearly swept over a 1000:1 range with an external
control voltage.
ORDERING INFORMATION
Part No.
Package
Operating
Temperature Range
XR-2209CN
8 Lead 300 Mil CDIP
0° to +70°C
XR-2209M
8 Lead 300 Mil CDIP
-55°C to +125°C
XR-2209CP
8 Lead 300 Mil PDIP
0°C to +70°C
BLOCK DIAGRAM
VCC
BIAS
1
5
C1
R
3
TWO
Triangle Wave Out
7
A1
2
VCO
C2
Timing
Resistor
8
SWO
Square Wave Out
6
Timing
Capacitor
VEE
A2
4
Figure 1. XR-2209 Block Diagram
Rev. 2.02
E1975
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z
1
(510) 688-7000 z FAX (510) 688-7017
