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參數(shù)資料
| 型號： | XR-2207M |
| 廠商： | EXAR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Voltage-Controlled Oscillator |
| 中文描述： | VCO, 0.00000001 MHz - 1 MHz |
| 封裝： | 0.300 INCH, CERAMIC, DIP-14 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大?。?/td> | 248K |
| 代理商： | XR-2207M |
XR-2207
15
Rev. 2.02
4.7K
C
A
8
B
9
10
GND
R1
4
R2
5
R3
6
R4
7
12
BIAS
11
TWO
14
SWO
13
C2
3
C1
2
1
XR-2207
1
μ
F
1
μ
F
Vbias
3.9K
V
EE
5.1K
1
μ
F
R3
V
T
RC
VC+
VC-
VC
Sweep or FM input
f
1
CR
3
1
R
3
R
C
1
V
C
V
T
Figure 17. Frequency Sweep Operation, Single Supply
Output
Square Wave
Triangle Wave
Output
V
CC
V
CC
V
CC
V+
V-
1
μ
F
Duty Cycle Control
The duty cycle of the output waveforms can be controlled
by frequency shift keying at the end of every half cycle of
oscillator output. This is accomplished by connecting one
or both of the binary keying inputs (pins 8 or 9) to the
squarewave output at pin 13. The output waveforms can
then be converted to positive or negative pulses and
sawtooth waveforms.
Figure 18is the recommended circuit connection for duty
cycle control. Pin 8 is shorted to pin 13 so that the circuit
switches between the “0,0” and the “1,0” logic states
given in Table 1 Timing pin 5 is activated when the output
is “high,” and the timing pin is activated when the
squarewave output goes to a low state.
The duty cycle of the output waveforms is given as:
Duty Cycle
R
2
R
2
R
3
and can be varied from 0.1% to 99.9% by proper choice of
timing resistors. The frequency of oscillation, f, is given
as:
f
2
C
1
R
2
R
3
The frequency can be modulated or swept without
changing the duty cycle by connecting R
2
and R
3
to a
common control voltage V
C
, instead of V
EE
(see
Figure 15). The sawtooth and the pulse output
waveforms are shown in Figure 19
相關PDF資料 |
PDF描述 |
|---|---|
| XR-2207ID | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PTB; No. of Contacts:18; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Thru-Bulkhead Receptacle |
| XR-2208 | OPERATIONAL MULTIPLIER |
| XR-2208P | Analog Multiplier |
| XR-2208CP | Analog Multiplier |
| XR-2208CN | Analog Multiplier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
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| XR2207MD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Waveform Generator/Support |
| XR2207MD/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Waveform Generator/Support |
| XR2207N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Waveform Generator/Support |
| XR-2208 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OPERATIONAL MULTIPLIER |
| XR-2208CN | 制造商:EXAR 制造商全稱:EXAR 功能描述:Analog Multiplier |
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