XR-2207
Voltage-Controlled
Oscillator
...the analog plus companyTM
June 1997–3
FEATURES
APPLICATIONS
D Excellent Temperature Stability (20ppm/°C)
D Linear Frequency Sweep
D FSK Generation
D Voltage and Current-to-Frequency Conversion
D Stable Phase-Locked Loop
D Adjustable Duty Cycle (0.1% to 99.9%)
D Two or Four Level FSK Capability
D Waveform Generation
D Wide Sweep Range (1000:1 Minimum)
D Logic Compatible Input and Output Levels
D Wide Supply Voltage Range ($4V to $13V)
D Low Supply Sensitivity (0.1% /V)
– Triangle, Sawtooth, Pulse, Squarewave
D FM and Sweep Generation
D Wide Frequency Range (0.01Hz to 1MHz)
D Simultaneous Triangle and Squarewave Outputs
GENERAL DESCRIPTION
The XR-2207 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.
TheXR-2207hasatypicaldriftspecificationof20ppm/°C.
The oscillator frequency can be linearly swept over a
1000:1 range with an external control voltage; and the
duty cycle of both the triangle and the squarewave
outputs can be varied from 0.1% to 99.9% to generate
stable pulse and sawtooth waveforms.
ORDERING INFORMATION
Operating
Temperature Range
Part No.
XR-2207M
XR-2207CP
XR-2207D
XR-2207ID
Package
14 Lead 300 Mil CDIP
-55°C to +125°C
0°C to +70°C
0°C to +70°C
14 Lead 300 Mil PDIP
16 Lead 300 Mil JEDEC SOIC
16 Lead 300 Mil JEDEC SOIC
-40°C to +85°C
V
CC
1
GND BIAS
BLOCK DIAGRAM
10
11
14
13
A1
A2
TWO
SWO
Triangle Wave Out
Square Wave Out
2
3
C1
C1
Timing
Capacitor
VCO
12
V
EE
4
5
6
7
R1
R2
R3
R4
Binary
Keying
Inputs
9
8
BKI2
BKI1
Timing
Resistors
Current
Switches
Figure 1. Block Diagram
Rev. 2.02
E1975
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017
1