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XR-2212 Datasheet(PDF) 4 Page - Exar Corporation

Part No. XR-2212
Description  Precision Phase-Locked Loop
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Maker  EXAR [Exar Corporation]
Homepage  http://www.exar.com
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XR-2212
4
Rev. 2.01
ELECTRICAL CHARACTERISTICS (CONT’D)
Parameter
XR-2212M/2212P
XR-2212CP
Units
Conditions
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
Conditions
Input Preamp Section
Measured at Pin 2
Input Impedance
20
20
k
W
Input Signal to Cause Limiting
2
10
2
mV rms
Op Amp Section
Voltage Gain
55
70
55
70
dB
RL = 5.1kW, RF = R
Input Bias Current
0.1
1
0.1
1
mA
Offset Voltage
+5
+20
+5
+20
mV
Slew Rate
2
2
V/
msec
Internal Reference
Measured at Pin 11
Voltage Level
4.9
5.3
5.7
4.75
5.3
5.85
V
Output Impedance
100
100
W
AC Small Signal
Maximum Source Current
80
80
WA
Notes
1 For XR-2212P the parameters, although guaranteed over the recommended operating conditions, are not 100% tested in
production.
Bold face parameters are covered by production test and guaranteed over operating temperature range.
Specifications are subject to change without notice
ABSOLUTE MAXIMUM RATINGS
Power Supply
18V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Signal Level
3V rms
. . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation:
Ceramic Package:
750mW
. . . . . . . . . . . . . . . . . . . . . . .
Derate Above TA = + 25°C
6mW/
°C
. . . . . . . .
Plastic Package:
625mW
. . . . . . . . . . . . . . . . . . . . . . . .
Derate Above TA = + 25°C
5mW/
°C
. . . . . . . .
SYSTEM DESCRIPTION
The XR-2212 is a complete PLL system with buffered
inputs and outputs, an internal reference, and an
uncommitted op amp. Two VCO outputs are pinned out;
one sources current, the other sources voltage. This
enables operation as a frequency synthesizer using an
external programmable divider. The op amp section can
be used as an audio preamplifier for FM detection or as a
high speed sense amplifier (comparator) for FSK
demodulation. The center frequency, bandwidth, and
tracking range of the PLL are controlled independently by
external components. The PLL output is directly
compatible with CMOS, HCMOS and TTL logic families
as well as microprocessor peripheral systems.
The precision PLL system operates over a supply voltage
range of 4.5V to 20V, a frequency range of 0.01Hz to
300kHz, and accepts input signals in the range of 2mV to
3V rms. Temperature stability of the VCO is typically
better than 20 ppm/
°C with the optimum timing resistor
value.




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