CD4046AK - CMOS Micropower PLL | Harris | Clock & Timing
부품 번호: CD4046AK ✗ 단종CD4046AK 개요
A phase-locked loop is a feedback-control circuit that synchronizes an output oscillator to a reference signal. The comparator measures phase and frequency error, the voltage-controlled oscillator converts the resulting control voltage into a variable-frequency output, and the feedback path continually corrects phase error. The CD4046AK belongs to the CD4000 CMOS logic family and can therefore be positioned in the hierarchy of phase-locked-loop, clock-generation, frequency-synthesis, timing, and semiconductor categories.
Its useful functions include phase comparison, voltage-controlled frequency generation, clock synthesis, and feedback-based frequency multiplication or division when the surrounding circuit supplies suitable reference and feedback paths. The integrated Schmitt-trigger input can support input conditioning where the comparator signal is slow or noisy. Because the device combines several PLL functions, it can reduce the component count of a basic frequency-synthesis or clock-recovery design.
The CD4046AK is relevant to communication links, tone generators, modulation circuits, measurement equipment, motor and timing systems, and digital systems requiring a variable clock. In these applications, the external resistor and capacitor values determine the VCO behavior, while the loop filter and feedback arrangement determine stability, lock range, ripple, and phase accuracy. Those circuit-level values cannot be selected without the unverified supply voltage, target frequency, and loop requirements.
The principal design caution is that the VCO and comparator must remain within the device's verified operating limits. Verify voltage, frequency, temperature, package, and pinout data against the manufacturer datasheet before release. The available search data supports the circuit function and distributor availability categories, but it does not expose enough technical detail to state exact electrical limits without risking incorrect design values.
This page combines verified distributor listings, component classification, datasheet availability, and engineering selection guidance. Exact ratings, pin assignments, pricing, and package dimensions remain explicitly unverified where the supplied sources do not publish them, preventing unsupported claims from entering a production design.
드롭인 대체품: CD4046AK — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청CD4046AK 사양
| Product Type | CMOS micropower phase-locked loop |
| Integrated Phase Comparator | Yes |
| Integrated VCO | Yes |
| VCO Output Stage | Three-state output |
| Comparator Input Stage | Schmitt-trigger input |
| Primary Function | Clock generation, phase locking, and frequency synthesis |
| Logic Family | CD4000 CMOS series |
CD4046AK standard 핀 구성 가이드
CD4046AK(standard 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: CD4046AK.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
CD4046AK 적합 용도: 6 애플리케이션s: Variable-Frequency Clock Synthesis, FM Tone Generation, Communication Clock Recovery, Frequency Multiplication and Division, Industrial Timing and Control, Measurement and Signal-Control Systems.
Variable-Frequency Clock Synthesis
The CD4046AK fits a basic clock-synthesis architecture because it integrates a phase comparator and voltage-controlled oscillator. A reference signal enters the comparison path, while the oscillator output is fed back until the loop reduces phase or frequency error. This arrangement can generate a controlled output when the required range remains inside the device's verified operating limits. Because the supplied sources do not state supply voltage or VCO frequency bounds, engineers must obtain those values from the manufacturer datasheet before selecting timing resistors, capacitors, or loop-filter components.
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FM Tone Generation
CD4046AK can serve as the controlled oscillator in an FM tone-generation circuit, with its control voltage determining the instantaneous output frequency. The integrated phase-comparator function is useful when the design also requires synchronization, multiplication, or division relative to another signal. The verified listing confirms frequency-synthesis and PLL functionality, but it does not provide verified linearity, distortion, center frequency, or modulation-bandwidth data. Those measurements must be checked in the datasheet and evaluated in the intended loop before production.
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Communication Clock Recovery
A CD4046AK-based loop can conceptually recover or regenerate timing by comparing an incoming periodic signal with an oscillator output and driving the oscillator toward alignment. This topology is relevant to low- or moderate-speed legacy communication circuits where the CD4000 CMOS family is already part of the design. The implementation must account for phase-comparator choice, loop bandwidth, jitter, capture range, and supply noise. None of those timing values is published in the supplied snippets, making datasheet verification and bench testing mandatory.
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Frequency Multiplication and Division
When connected as a feedback frequency divider, the CD4046AK can synchronize an oscillator to a divided version of its own output, enabling multiplication relative to a lower-frequency reference. A comparator path that divides the incoming signal can support other ratio arrangements. The component count remains low because phase detection and VCO generation are integrated. Exact division ratios, lock range, acquisition time, and output jitter must be taken from the verified manufacturer data and tested across operating conditions rather than inferred from the CD4046 family name.
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Industrial Timing and Control
CD4046AK can support variable-period timing or synchronization in legacy industrial-control equipment where CMOS logic and loop-based clock recovery are appropriate. Its integrated functions reduce the number of separate comparator and oscillator blocks, potentially simplifying a compact legacy design. Reliability evaluation must include supply transients, temperature variation, output loading, and loop behavior across the complete target frequency range. The supplied data does not verify industrial qualification, package, endurance, or absolute maximum ratings, so those claims require separate manufacturer documentation.
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Measurement and Signal-Control Systems
A CD4046AK loop can synchronize excitation or sampling clocks in measurement systems that require a variable frequency derived from a stable reference. The phase comparator provides error information and the VCO produces the adjustable output, enabling closed-loop frequency regulation. Practical success depends on reference purity, loop bandwidth, output noise, and isolation from sensitive analog paths. Since the supplied sources provide no verified phase-noise, jitter, frequency, or output-level specifications, CD4046AK should enter laboratory evaluation only after those parameters are obtained from the datasheet.
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추천 제품 요약
엔지니어링 참조 데이터: CD4046AK — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| Brand | Harris Corporation |
| Product Type | CMOS micropower phase-locked loop |
| Phase Comparator | Integrated |
| Voltage-Controlled Oscillator | Integrated |
| VCO Output Stage | Three-state output |
| Comparator Input Stage | Schmitt-trigger input |
설계 노트
Do not approve a CD4046AK replacement solely because another part is labeled CD4046-compatible. The AK suffix, package drawing, pin numbers, comparator-output selection, VCO limits, and electrical ratings must all match. The supplied cross-reference search mentions HEC4046B and MC14046B as possible family equivalents, but it does not contain verified drop-in evidence; compare the controlling manufacturer datasheets and perform circuit-level qualification before substitution.
Validate the complete supply range and total current consumption against the manufacturer datasheet before calculating power or battery life. The verified sources call the device micropower but do not provide a numeric supply voltage, quiescent current, or operating current. Estimated: Pdiss equals approximately VIN multiplied by total device current, excluding external losses. Apply that estimate only after obtaining verified operating conditions and check the worst-case load at switching and lock transitions.
Keep the comparator inputs, loop-filter components, VCO timing network, and outputs arranged to minimize feedback from switching or high-current traces. Route the high-impedance phase-comparator and VCO-control nodes as short as practical, keep the timing capacitor and resistive network close to their intended pins, and provide a low-impedance return path. The exact grounding topology should follow the manufacturer application guidance after the actual pinout and package are verified.
규정 준수 정보
The supplied distributor and datasheet-search results do not state compliance for the exact Harris CD4046AK ordering code. No compliance status has been inferred.