TI LMC567CMX/NOPB

语音解码器2V ~ 9V

Overview

The LMC567CMX/NOPB device is a low-power, general-purpose LMCMOS tone decoder which is functionally similar to the industry standard LM567. The device 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

LMCMOS™ Series
Available in the 8-SOIC (0.154, 3.90mm Width) package
Operating supply voltage of 5V
Operating supply current of 12mA

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
LMC567CMX/NOPB Telecom applications.

• Switches
• LAN Routers
• Digital Modems
• SONET/SDH terminal
• Add/Drop multiplexers (ADMs)
• T1/E1/J1 add/drop multiplexers (MUX)
• Channel Service Units (CSUs): T1/E1/J1
• Fractional T1/E1/J1
• BITS Timing
• Digital Access Cross-connect System (DACs)