Fairchild MM74HC4046M Phase-Locked Loop with VCO SOIC16

Manufactured by Fairchild - Part # MM74HC4046M (CD4046) - SOIC16 SMD package

Description

The MM74HC4046M are phase-locked-loop circuits that contain a linear voltage-controlled oscillator (VCO) and three different phase comparators (PC1, PC2 and PC3). A signal input and a comparator input are common to each comparator.

The signal input can be directly coupled to large voltage signals, or indirectly coupled (with a series capacitor) to small voltage signals. A self-bias input circuit keeps small voltage signals within the linear region of the input amplifiers. With a passive low-pass filter, the 4046A forms a second-order loop PLL. The excellent VCO linearity is achieved by the use of linear op-amp techniques.

Features

• Operating Frequency Range
   - Up to 18MHz (Typ) at VCC = 5V
   - Minimum Center Frequency of 12MHz at VCC = 4.5V
• Choice of Three Phase Comparators
   - EXCLUSIVE-OR
   - Edge-Triggered JK Flip-Flop
   - Edge-Triggered RS Flip-Flop
• Excellent VCO Frequency Linearity
• VCO-Inhibit Control for ON/OFF Keying and for Low Standby Power Consumption
• Minimal Frequency Drift
• Operating Power Supply Voltage Range
   - VCO Section . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 6V
   - Digital Section . . . . . . . . . . . . . . . . . . . . . . . . 2V to 6V
• Fanout (Over Temperature Range)
   - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
   - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
   - 2V to 6V Operation
-    High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V

Applications

• FM Modulation and Demodulation
• Frequency Synthesis and Multiplication
• Frequency Discrimination
• Tone Decoding
• Data Synchronization and Conditioning
• Voltage-to-Frequency Conversion
• Motor-Speed Control