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Details, datasheet, quote on part number:LMC567MWC
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Datasheet text preview:
LMC567 Low Power Tone Decoder
June 1999
LMC567 Low Power Tone Decoder
General Description
The LMC567 is a low power general purpose LMCMOSTM tone decoder which is functionally similar to the industry standard LM567. It consists of a twice frequency voltage-controlled oscillator (VCO) and quadrature dividers which establish the reference signals for phase and amplitude detectors. The phase detector and VCO form a phase-locked loop (PLL) which locks to an input signal frequency which is within the control range of the VCO. When the PLL is locked and the input signal amplitude exceeds an internally pre-set threshold, a switch to ground is activated on the output pin. External components set up the oscillator to run at twice the input frequency and determine the phase and amplitude filter time constants.
Features
n n n n n n n n n n Functionally similar to LM567 2V to 9V supply voltage range Low supply current drain No increase in current with output activated Operates to 500 kHz input frequency High oscillator stability Ground-referenced input Hysteresis added to amplitude comparator Out-of-band signals and noise rejected 20 mA output current capability
Block Diagram
(with External Components)
DS008670-1
Order Number LMC567CM or LMC567CN See NS Package Number M08A or N08E
LMCMOSTM is a trademark of National Semiconductor Corp.
© 1999 National Semiconductor Corporation
DS008670
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage, Pin 3 Supply Voltage, Pin 4 Output Voltage, Pin 8 Voltage at All Other Pins Output Current, Pin 8 Package Dissipation Operating Temperature Range (TA) 2 Vp p 10V 13V Vs to Gnd 30 mA 500 mW -25°C to +125°C
Storage Temperature Range -55°C to +150°C Soldering Information Dual-In-Line Package Soldering (10 sec.) 260°C Small Outline Package Vapor Phase (60 sec.) 215°C Infrared (15 sec.) 220°C See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount devices.
Electrical Characteristics
Test Circuit, TA = 25°C, Vs = 5V, RtCt #2, Sw. 1 Pos. 0, and no input, unless otherwise noted. Symbol I4 Parameter Power Supply Current Input D.C. Bias Input Resistance Output Leakage Center Frequency, Fosc ÷ 2 Center Frequency Shift with Supply Input Threshold Set Input Frequency Equal to f0 Measured Above, Increase Input Level Until Pin 8 Goes Low. Starting at Input Threshold, Decrease Input Level Until Pin 8 goes High. Input Level > Threshold Choose RL for Specified I8 Measure Fosc with Sw. 1 in Pos. 0, 1, and 2; I8 = 2 mA I8 = 20 mA Vs = 2V Vs = 5V Vs = 9V BW Bandwidth Skew 0 fmax Vin Highest Center Freq. Input Threshold at fmax RtCt #3, Measure Oscillator Frequency and Divide by 2 Set Input Frequency Equal to fmax measured Above, Increase Input Level Until Pin 8 goes Low. Vs = 2V Vs = 5V Vs = 9V 11 17 RtCt #2, Measure Oscillator Frequency and Divide by 2 Vs = 2V Vs = 5V Vs = 9V 92 Conditions RtCt #1, Quiescent or Activated Vs = 2V Vs = 5V Vs = 9V Min Typ 0.3 0.5 0.8 0 40 1 98 103 105 1.0 20 30 45 1.5 0.06 0.7 7 11 11 14 15 15 17 % 0.15 mVrms Vdc 2.0 27 45 mVrms %/V 113 kHz 100 0.8 1.3 mVdc k nAdc mAdc Max Units
V3 R3 I8 f0
f0
Vin
Vin V8 L.D.B.W.
Input Hysteresis Output 'Sat' Voltage Largest Detection Bandwidth
± 1.0
%
700 35
kHz mVrms
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance.
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2
Test Circuit
DS008670-2
RtCt
Rt 100k 10k 5.1k
Ct 300 pF 300 pF 62 pF
#1 #2 #3
3
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