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XR-2213 Datasheet Preview

XR-2213 Datasheet

Precision Phase-Locked Loop/Tone Decoder

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XR·2213
Precision Phase-Locked Loop/Tone Decoder
GENERAL DESCRIPTION
FUNCTIONAL BLOCK OIAGRA'M
The XR-2213 is a highly stable phase-locked loop (PLL)
system designed for control systems and tone detec-
tion applications. It combines the features of the XR-
2211 and XR-2212 into a single monolithic IC. The cir-
cuit consists of a high stability VCO, input preamplifier,
phase detector, quadrature phase detector, and high
gain voltage comparator. Initial VCO frequency accu-
racy and supply rejection are an order of magnitude
better than industry standards like the 567 decoder. An
on board reference contributes to reliable operation
and complementary outputs aid applicability.
FEATURES
Wide Frequency Range
0.01 Hz to 300 kHz
Wide Supply Voltage Ran~
4.5 V to 15 V
Uncommitted VCO Q and Q Outputs
Wide Dynamic Input Voltage Range 2mV to 3 V RMS
Excellent VCO Stability
20 PPM/DC Typ.
APPLICATIONS
Tone Detection
Frequency Synthesis
FM Detection
Tracking Filters
ABSOLUTE MAXIMUM RATINGS
Power Supply
Input Signal Level
Power Dissipation
Ceramic Package:
Derate Above TA = +25 DC
Plastic Package:
Derate Above TA = + 25°C
Storage Temperature
15 V
3 V RMS
750 mW
6 mW/oC
625 mW
5 mW/cC
- 55°C to + 150cC
ORDERING INFORMATION
Part Number
Package
XR-2213CN
XR-2213CP
XR-2213N
XR-2213P
Ceramic
Plastic
Ceramic
Plastic
Operating Temperature
O°C to +
O°C to +
-40°C to +
_40DC to +
70°C
70°C
85°C
85°C
I
SYSTEM DESCRIPTION
The XR-2213 is a complete PLL system including cir-
cuitry enabling dedicated tone detection capability
over a frequency range of 0.01 Hz to 300 kHz. Supply
voltage may range from 4.5 V to 15 V.
The input preamplifier has a dynamic range of 2 mV to
3 Vrms. The high stability VCO, with buffered comple-
mentary outputs, typically features better than 20 ppm/
°C temperature drift and 0.05%1V supply rejection. An
on board voltage reference is provided, and can sink 2
mA. The complementary lock detect outputs are each
capable of sinking more than 7 rnA. All system parame-
ters are independantly determined by external compo-
nents.
6-89




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XR-2213 Datasheet Preview

XR-2213 Datasheet

Precision Phase-Locked Loop/Tone Decoder

No Preview Available !

XR·2213
ELECTRICAL CHARACTERISTICS
Test Conditions: VCC = + 12V, TA == + 25°C, RO == 10 kD, Co = 0.1 ItF, unless otherwise specified. See Figure 2 for
component designation.
PARAMETERS
GENERAL
Supply voltage
Supply current
OSCILLATOR SECTION
Frequency accuracy
Frequency stability
Temperature
Power supply
Upper frequency limit
Timing resistor Ro
operating range
Recommended range
OSCILLATOR OUTPUT
Voltage output
Positive swing
Negative swing
LOOP PHASE DETECTOR SECTION
Peak output current
Output offset current
Output impedance
Maximum swing
INPUT PREAMP SECTION
Input impedance
Input signal to cause limiting
Internal Reference
Voltage level
Output impedance
XR·2213/2213M
MIN TYP MAX
4.5 15
9 11
±1 ±3
20 50
0.05 0.5
100 300
5 2000
10 100
9.5 11.5
0.4 0.8
± 150
±4
±200
±1
1
±5
20
2 10
4.9 5.3 5.7
100
XR-2213C
MIN TYP MAX UNITS
CONDITIONS
4.5 15 V
9 12 mA Ro ~ 10KD
±1 % Deviation from
fo == _1_
RoCo
R1 == x
20 PPM/oC
0.05 %/V V+ = 12V ± 1V
300 kHz Ro == 8.2KO,
Co == 400pF
KD
KO
2.5 4.5
0.4 0.8
V IL::::; 100itA
V IL = 2mA
± 100
±4
±200
±2
1
±5
itA
itA
MO
V Referenced to
VREF
20 KD
2 MVRMS
4.75
5.3 5.85
100
V
0
PRINCIPLES OF OPERATION
Figure 2 shows the standard connection for tone detec-
tion. The input signal at Pin 4 is amplified and squared-
up by the preamp before it is fed to the loop phase de-
tector. The VCO Q output provides the other loop phase
detector input. The VCO provided in the XR-2213 is ac-
tually a current controlled oscillator, ICO. The input to
the ICO, Pin 13, is internally biased at VREF, with the
current drawn from this pin controlling the frequency of
operation of the ICO. The resistor RO from Pin 13 to
ground v'IlIl provide a constant CUiient which wiii be
made up of the current from Pin 13 and the current
from R1 or the phase detector output. The phase detec-
tor output, filtered by C1, will provide a voltage to R1,
which is proportional to the phase difference between
the input frequency and the ICO frequency. The rela-
tionship between this voltage and phase difference is
shown in Figure 3. If the phase difference is 90°, Pin 6
will be at VREF, and therefore there will be no current
flow in R1 with all of the current in RO coming from Pin
13. This point is defined as the center frequency, fO, of
the PLL and is calculated by:
*fO = _1_
ROCO
If the input frequency is increased, the phase shift will
decrease causing the voltage at Pin 6 to decrease. Cur-
rent will now flow from Pin 13 to both RO and R1, caus-
ing an increase in ICO input current and thus an output
frequency increase. If the phase detector swings all the
way to 0 volts, the current in R1, will be:
VREF
IR1 = - -
R1
*This condition will also occur if no input Signal is ap-
plied to Pin 4.
6-90


Part Number XR-2213
Description Precision Phase-Locked Loop/Tone Decoder
Maker Exar
Total Page 5 Pages
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