Overview
The 74HC4046AD,653 is a high-speed Si-gate CMOS integrated circuit produced by Nexperia (previously part of NXP Semiconductors). This device is a phase-locked loop (PLL) with a voltage-controlled oscillator (VCO) and is specified in compliance with JEDEC standard no 7A. It is designed for various applications requiring precise frequency control and synchronization.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Power dissipation considerations | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|
| 74HC4046AD | 3.0 - 6.0 | CMOS | ± 5.2 | 18 | 21 | low | 115 | 2.8 | SO16 (SOT109-1) |
Key Features
- Low power consumption
- VCO-Inhibit control for ON/OFF keying and low standby power consumption
- Center frequency up to 17 MHz (typical) at VCC = 4.5 V
- Choice of three phase comparators: EXCLUSIVE-OR, Edge-triggered J-K flip-flop, and Edge-triggered RS flip-flop
- Excellent VCO linearity and low frequency drift with supply voltage and temperature variations
- Operating power supply voltage range: VCO section 3.0 V to 6.0 V, Digital section 2.0 V to 6.0 V
- Zero voltage offset due to operational amplifier buffering
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Applications
- FM modulation and demodulation
- Frequency synthesis and multiplication
- Frequency discrimination
- Tone decoding
- Data synchronization and conditioning
- Voltage-to-frequency conversion
- Motor-speed control
Q & A
- What is the primary function of the 74HC4046AD?
The 74HC4046AD is a phase-locked loop (PLL) with a voltage-controlled oscillator (VCO), designed for frequency control and synchronization.
- What are the operating voltage ranges for the VCO and digital sections?
The VCO section operates from 3.0 V to 6.0 V, and the digital section operates from 2.0 V to 6.0 V.
- What types of phase comparators are available in the 74HC4046AD?
The device includes three phase comparators: EXCLUSIVE-OR, Edge-triggered J-K flip-flop, and Edge-triggered RS flip-flop.
- What is the typical center frequency of the VCO at VCC = 4.5 V?
The typical center frequency of the VCO is up to 17 MHz at VCC = 4.5 V.
- What is the package type of the 74HC4046AD,653?
The package type is SO16 (SOT109-1).
- Does the 74HC4046AD have ESD protection?
- What are some common applications of the 74HC4046AD?
Common applications include FM modulation and demodulation, frequency synthesis and multiplication, frequency discrimination, tone decoding, data synchronization and conditioning, voltage-to-frequency conversion, and motor-speed control.
- How does the VCO-Inhibit control function in the 74HC4046AD?
The VCO-Inhibit control is used for ON/OFF keying and to reduce standby power consumption.
- What is the significance of the zero voltage offset in the 74HC4046AD?
The zero voltage offset, achieved through operational amplifier buffering, ensures accurate and stable operation without voltage offset errors.
- Is the 74HC4046AD suitable for high-frequency applications?
