LMC567

Features: ·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 ...

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SeekIC No. : 004396512 Detail

LMC567: Features: ·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 stabi...

floor Price/Ceiling Price

Part Number:
LMC567
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:

·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





Application

The LMC567 low power tone decoder can be operated at supply voltages of 2V to 9V and at input frequencies ranging from 1 Hz up to 500 kHz.

The LMC567 can be directly substituted in most LM567 applications with the following provisions:
1. Oscillator timing capacitor Ct must be halved to double the oscillator frequency relative to the input frequency (See OSCILLATOR TIMING COMPONENTS).
2. Filter capacitors C1 and C2 must be reduced by a factor of 8 to maintain the same filter time constants.
3. The output current demanded of pin 8 must be limited to the specified capability of the LMC567.






Specifications

Input Voltage, Pin 3 ............................................2 Vpp
Supply Voltage, Pin 4 ...............................................10V
Output Voltage, Pin 8 ..............................................13V
Voltage at All Other Pins Vs to Gnd
Output Current, Pin 8 ..........................................30 mA
Package Dissipation .........................................500 mW
Operating Temperature Range (TA) .....−25 to +125
Storage Temperature Range ...............−55 to +150
Soldering Information
Dual-In-Line Package
Soldering (10 sec.) ..............................................260
Small Outline Package
Vapor Phase (60 sec.) .........................................215
Infrared (15 sec.) ................................................220





Description

The LMC567 is a low power general purpose LMCMOS™ 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.






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