XD567 DIP8 / XL567 SOP8
1 Features
3 Description
•
The XDXL/567 are general purpose tone
decoders designed to provide a saturated transistor
switch to ground when an input signal is present
within the passband. The circuit consists of an I and
Q detector driven by a voltage controlled oscillator
which determines the center frequency of the
decoder. External components are used to
independently set center frequency, bandwidth and
output delay.
1
•
•
•
•
•
•
20 to 1 Frequency Range With an External
Resistor
Logic Compatible Output With 100-mA Current
Sinking Capability
Bandwidth Adjustable From 0 to 14%
High Rejection of Out of Band Signals and Noise
Immunity to False Signals
Highly Stable Center Frequency
Center Frequency Adjustable from 0.01 Hz to
500 kHz
4 Simplified Diagram
2 Applications
•
•
•
•
•
•
•
Touch Tone Decoding
Precision Oscillator
Frequency Monitoring and Control
Wide Band FSK Demodulation
Ultrasonic Controls
Carrier Current Remote Controls
Communications Paging Decoders
1
1
XD567 DIP8 / XL567 SOP8
5 Device Comparison Table
DEVICE NAME
XDXL/567
DESCRIPTION
General Purpose Tone Decoder
6 Pin Configuration and Functions
8-Pin
PDIP (P) and SOIC (D) Package
Top View
Pin Functions
PIN
NAME
NO.
TYPE
DESCRIPTION
GND
7
P
Circuit ground.
IN
3
I
Device input.
LF_CAP
2
I
Loop filter capacitor pin (LPF of the PLL).
OUT
8
O
Device output.
OF_CAP
1
I
Output filter capacitor pin.
T_CAP
5
I
Timing capacitor connection pin.
T_RES
6
I
Timing resistor connection pin.
VCC
4
P
Voltage supply pin.
2
XD567 DIP8 / XL567 SOP8
7 Specifications
7.1 Absolute Maximum Ratings (1) (2) (3)
MIN
MAX
UNIT
Supply Voltage Pin
9
V
Power Dissipation (4)
1100
mW
15
V
V3
−10
V
V3
V4 + 0.5
V
70
°C
Soldering (10 s)
260
°C
Vapor Phase (60 s)
215
°C
Infrared (15 s)
220
°C
150
°C
V8
XDXL/567
0
PDIP Package
Operating Temperature Range
SOIC Package
−65
Storage temperature range, Tstg
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Recommended Operating Conditions indicate
conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC
electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within
the Recommended Operating Conditions. Specifications are not ensured for parameters where no limit is given, however, the typical
value is a good indication of device performance.
7.2 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VCC
Supply Voltage
3.5
8.5
VIN
Input Voltage Level
–8.5
8.5
V
V
TA
Operating Temperature Range
–20
120
°C
7.3 Thermal Information
XDXL/567
THERMAL METRIC
(1)
D
P
UNIT
8 PINS
RθJA
Junction-to-ambient thermal resistance
107.5
53.0
RθJC(top)
Junction-to-case (top) thermal resistance
54.6
42.3
RθJB
Junction-to-board thermal resistance
47.5
30.2
ψJT
Junction-to-top characterization parameter
10.0
19.6
ψJB
Junction-to-board characterization parameter
47.0
30.1
(1)
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
3
XD567 DIP8 / XL567 SOP8
7.4 Electrical Characteristics
AC Test Circuit, TA = 25°C, V+ = 5 V
PARAMETER
TEST CONDITIONS
Power Supply Voltage Range
XDXL/567
XDXL/567
MIN
TYP
MAX
MIN
TYP
MAX
4.75
4.75
UNIT
5.0
9.0
5.0
9.0
V
Power Supply Current Quiescent
RL = 20k
6
8
7
10
mA
Power Supply Current Activated
RL = 20k
11
13
12
15
mA
25
mVrms
Input Resistance
18
Smallest Detectable Input Voltage
IL = 100 mA, fi = fo
Largest No Output Input Voltage
IC = 100 mA, fi = fo
20
10
Largest Simultaneous Outband Signal to
Inband Signal Ratio
Minimum Input Signal to Wideband Noise
Ratio
Bn = 140 kHz
Largest Detection Bandwidth
12
Largest Detection Bandwidth Skew
Largest Detection Bandwidth Variation with
Temperature
Largest Detection Bandwidth Variation with
Supply Voltage
15
25
15
4.75 – 6.75 V
10
0 < TA < 70
−55 < TA < +125
mVrms
6
6
dB
−6
−6
dB
14
16
1
2
10
±2
500
0.5
Fastest ON-OFF Cycling Rate
14
18
% of fo
2
3
% of fo
±0.1
±1
100
35 ± 60
35 ± 140
Center Frequency Shift with Supply Voltage 4.75 V – 6.75 V
4.75 V – 9 V
kΩ
15
±1
100
20
20
±0.1
Highest Center Frequency
Center Frequency Stability (4.75 – 5.75 V)
20
1.0
2.0
fo/20
%/°C
±5
%V
500
kHz
35 ± 60
35 ± 140
ppm/°C
ppm/°C
0.4
2.0
2.0
%/V
%/V
fo/20
Output Leakage Current
V8 = 15 V
0.01
25
0.01
25
µA
Output Saturation Voltage
ei = 25 mV, I8 = 30 mA
ei = 25 mV, I8 = 100 mA
0.2
0.6
0.4
1.0
0.2
0.6
0.4
1.0
V
Output Fall Time
30
30
ns
Output Rise Time
150
150
ns
4
XD567 DIP8 / XL567 SOP8
7.5 Typical Characteristics
Figure 1. Typical Frequency Drift
Figure 2. Typical Bandwidth Variation
Figure 3. Typical Frequency Drift
Figure 4. Typical Frequency Drift
Figure 5. Bandwidth vs Input Signal Amplitude
Figure 6. Largest Detection Bandwidth
5
XD567 DIP8 / XL567 SOP8
Typical Characteristics (continued)
Figure 7. Detection Bandwidth as a Function of C2 and C3
Figure 8. Typical Supply Current vs Supply Voltage
Figure 9. Greatest Number of Cycles Before Output
Figure 10. Typical Output Voltage vs Temperature
6
XD567 DIP8 / XL567 SOP8
8
8.1
Detailed Description
Overview
The XDXL/567 is a general purpose tone decoder. The circuit consists of I and Q detectors driven by a voltage
controlled oscillator which determines the center frequency of the decoder. This device is designed to provide a
transistor switch to ground output when the input signal frequency matches the center frequency pass band.
Center frequency is set by an external timing circuit composed by a capacitor and a resistor. Bandwidth and
output delay are set by external capacitors.
8.2
Functional Block Diagram
7
XD567 DIP8 / XL567 SOP8
DIP
87
XD567 DIP8 / XL567 SOP8
SOP
79
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