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參數(shù)資料
| 型號： | XR2209CP-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 0K |
| 描述： | IC FUNCTION GENERATOR 8PDIP |
| 標準包裝： | 50 |
| 類型： | VCO（雙路） |
| 頻率： | 10Hz ~ 1MHz |
| 電源電壓： | 4 V ~ 13 V |
| 電流 - 電源： | 5mA |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 8-DIP（0.300"，7.62mm） |
| 包裝： | 管件 |
| 供應商設備封裝： | 8-PDIP |
| 安裝類型： | 通孔 |
| 其它名稱： | 1016-1307-5 |
XR-2209
12
Rev. 2.02
RL
Square Wave
Output
Triangle Wave
C
1
mF
TR
46
BIAS
5
TWO
8
SWO
7
C2
3
C1
2
1
XR-2209
R
Output
1
mF
5.1K
Figure 14. Single Supply Operation
VCC
VEE
Single Supply Operation
The circuit should be interconnected as shown in
Figure 14 for single supply operation. Pin 6 should be
grounded, and pin 5 biased from VCC through a resistive
divider to a value of bias voltage between VCC/3 and
VCC/2.
The frequency of operation is determined by the timing
capacitor C and the timing resistor R, and is equal to
1/RC. The squarewave output is obtained at pin 7 and
has a peak-to-peak voltage swing equal to the supply
voltage.
This output is an “open-collector” type and
requires an external pull-up load resistor (nominally 5k
W)
to V+. The triangle waveform obtained at pin 8 is centered
about a voltage level VO where:
VO
+ VB ) 0.6V
where VB is the bias voltage at pin 5. The peak-to-peak
output swing of triangle wave is approximately equal to
VCC/2.
Frequency Control (Sweep and FM) - Split Supply
The circuit given in
Figure 15 shows a frequency sweep
method for split supply operation.
The frequency of operation is controlled by varying the
total timing current, IT, drawn from the activated timing pin
4. The timing current can be modulated by applying a
control voltage, VC, to the timing pin through a series
resistor R.
As the control voltage becomes more
negative, both the total timing current, IT, and the
oscillation frequency increase.
The frequency of operation, is now proportional to the
control voltage, VC, and determined as:
f
+ 1
RC
1
)
V
CR
R
CVEE
Hz
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