LM567/LM567C Tone Decoder General Description The LM567 and LM567C 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. Features n 20 to 1 frequency range with an external resistor n Logic compatible output with 100 mA current sinking capability n Bandwidth adjustable from 0 to 14% n n n n 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 Applications n n n n n n n Touch tone decoding Precision oscillator Frequency monitoring and control Wide band FSK demodulation Ultrasonic controls Carrier current remote controls Communications paging decoders Connection Diagrams Metal Can Package Dual-In-Line and Small Outline Packages 00697501 Top View Order Number LM567H or LM567CH See NS Package Number H08C © 2004 National Semiconductor Corporation DS006975 00697502 Top View Order Number LM567CM See NS Package Number M08A Order Number LM567CN See NS Package Number N08E www.national.com LM567/LM567C Tone Decoder February 2003 LM567/LM567C Absolute Maximum Ratings (Note 1) LM567H LM567CH, LM567CM, LM567CN If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Pin 15V V3 −10V V3 V4 + 0.5V Storage Temperature Range Dual-In-Line Package Soldering (10 sec.) 1100 mW V8 0˚C to +70˚C Soldering Information 9V Power Dissipation (Note 2) −55˚C to +125˚C 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. −65˚C to +150˚C Operating Temperature Range Electrical Characteristics AC Test Circuit, TA = 25˚C, V+ = 5V Parameters LM567 Conditions Power Supply Voltage Range LM567C/LM567CM Units Min Typ Max Min Typ Max 4.75 5.0 9.0 4.75 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 4.75–6.75V 10 100 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 4.75V–6.75V 4.75V–9V kΩ 15 ±1 Center Frequency Stability (4.75–5.75V) 0 < TA < 70 −55 < TA < +125 20 20 ± 0.1 Highest Center Frequency Center Frequency Shift with Supply Voltage 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 = 15V 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 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. Note 2: The maximum junction temperature of the LM567 and LM567C is 150˚C. For operating at elevated temperatures, devices in the TO-5 package must be derated based on a thermal resistance of 150˚C/W, junction to ambient or 45˚C/W, junction to case. For the DIP the device must be derated based on a thermal resistance of 110˚C/W, junction to ambient. For the Small Outline package, the device must be derated based on a thermal resistance of 160˚C/W, junction to ambient. Note 3: Refer to RETS567X drawing for specifications of military LM567H version. www.national.com 2 LM567/LM567C Schematic Diagram 00697503 3 www.national.com LM567/LM567C Typical Performance Characteristics Typical Frequency Drift Typical Bandwidth Variation 00697511 00697510 Typical Frequency Drift Typical Frequency Drift 00697513 00697512 Bandwidth vs Input Signal Amplitude Largest Detection Bandwidth 00697514 www.national.com 00697515 4 LM567/LM567C Typical Performance Characteristics (Continued) Detection Bandwidth as a Function of C2 and C3 Typical Supply Current vs Supply Voltage 00697517 00697516 Greatest Number of Cycles Before Output Typical Output Voltage vs Temperature 00697518 00697519 5 www.national.com LM567/LM567C Typical Applications Touch-Tone Decoder 00697505 Component values (typ) R1 6.8 to 15k R2 4.7k R3 20k C1 0.10 mfd C2 1.0 mfd 6V C3 2.2 mfd 6V C4 250 mfd 6V www.national.com 6 (Continued) Oscillator with Double Frequency Output Oscillator with Quadrature Output 00697507 00697506 Connect Pin 3 to 2.8V to Invert Output Precision Oscillator Drive 100 mA Loads 00697508 7 www.national.com LM567/LM567C Typical Applications LM567/LM567C AC Test Circuit Applications Information The center frequency of the tone decoder is equal to the free running frequency of the VCO. This is given by The bandwidth of the filter may be found from the approximation Where: Vi = Input voltage (volts rms), Vi ≤ 200mV C2 = Capacitance at Pin 2(µF) 00697509 fi = 100 kHz + 5V *Note: Adjust for fo = 100 kHz. www.national.com 8 LM567/LM567C LM567C MDC MWC TONE DECODER 00697523 Die Layout (C - Step) DIE/WAFER CHARACTERISTICS Fabrication Attributes General Die Information Physical Die Identification LM567C Bond Pad Opening Size (min) 91µm x 91µm Die Step C Bond Pad Metalization 0.5% COPPER_BAL. ALUMINUM Passivation VOM NITRIDE Back Side Metal BARE BACK Physical Attributes Wafer Diameter 150mm Dise Size (Drawn) 1600µm x 1626µm Back Side Connection 63.0mils x 64.0mils Thickness 406µm Nominal Min Pitch 198µm Nominal Floating Special Assembly Requirements: Note: Actual die size is rounded to the nearest micron. Die Bond Pad Coordinate Locations (C - Step) (Referenced to die center, coordinates in µm) NC = No Connection, N.U. = Not Used SIGNAL NAME PAD# NUMBER X/Y COORDINATES PAD SIZE X Y X Y OUTPUT FILTER 1 -673 686 91 x 91 LOOP FILTER 2 -673 -419 91 x 91 INPUT 3 -673 -686 91 x 91 V+ 4 -356 -686 91 x 91 TIMING RES 5 673 -122 91 x 91 TIMING CAP 6 673 76 91 x 91 GND 7 178 686 117 x 91 OUTPUT 8 -318 679 117 x 104 9 www.national.com LM567/LM567C LM567C MDC MWC TONE DECODER (Continued) IN U.S.A Tel #: 1 877 Dial Die 1 877 342 5343 Fax: 1 207 541 6140 IN EUROPE Tel: 49 (0) 8141 351492 / 1495 Fax: 49 (0) 8141 351470 IN ASIA PACIFIC Tel: (852) 27371701 IN JAPAN Tel: www.national.com 81 043 299 2308 10 LM567/LM567C Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (H) Order Number LM567H or LM567CH NS Package Number H08C Small Outline Package (M) Order Number LM567CM NS Package Number M08A 11 www.national.com LM567/LM567C Tone Decoder Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number LM567CN NS Package Number N08E National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. 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