ADF4107BCP - 7 GHz Integer-N PLL | Analog Devices | LFCSP-20
부품 번호: ADF4107BCP ✓ 활성ADF4107BCP 개요
An integer-N PLL is a frequency-generation category in which feedback divides the synthesized output to produce a stable reference-frequency relationship. Within the broader hierarchy of clock and timing integrated circuits, a PLL combines a phase-frequency detector, charge pump, programmable counters, prescaler, and voltage-controlled oscillator. The ADF4107 implements these functions as an integrated synthesizer for wireless transmitters and receivers requiring accurate local-oscillator generation.
Key features include low-noise digital phase detection, a precision charge pump, a programmable reference divider, a 6-bit A counter, a 13-bit B counter, and a programmable dual-modulus P/P+1 prescaler. According to the Analog Devices ADF4107 data sheet, typical phase noise is -83 dBc/Hz at a 1 kHz carrier offset, while spurs are better than -70 dBc. These characteristics make the device useful where local-oscillator phase noise and close-in spur performance influence receiver sensitivity or transmitter signal quality.
The architecture supports integer-N synthesis from a reference source through programmable division and prescaling. The charge-pump output on pin 2 drives an external loop filter, and the data sheet illustrates a filter designed for a 45-degree overall phase margin. Designers must account for loop bandwidth, reference phase noise, charge-pump current, prescaler division, and VCO tuning gain when determining filter component values.
Typical applications include wireless receiver and transmitter local oscillators, up-conversion and down-conversion sections, instrumentation, and communications equipment. The 7 GHz operating ceiling suits radio-frequency signal chains operating below that limit, while the separate VP rail provides additional tuning-voltage headroom when required by the VCO and loop-filter design.
A key design consideration is the dependence of reference phase noise on multiplication ratio. Although the ADF4107 supplies substantial on-chip frequency generation, the reference oscillator and loop filter remain external and can dominate final phase-noise performance. This page synthesizes verified manufacturer information, procurement data, replacement information, and practical design guidance for engineers evaluating the ADF4107BCP.
드롭인 대체품: ADF4107BCP — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
ADF4107BCPZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADF4107BCPZ-REEL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADF4107BCP-REEL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADF4107BCP 사양
| Maximum Frequency | 7.0 GHz |
| Power Supply | 3.3 V |
| Supported System Supply | 3 V |
| Charge Pump Supply | Separate VP rail |
| A Counter | 6-bit |
| B Counter | 13-bit |
| Prescaler | Programmable dual-modulus P/P+1 |
| Typical Phase Noise | -83 dBc/Hz at 1 kHz offset |
| Typical Spurs | Better than -70 dBc |
| Phase-Frequency Detector | Low-noise digital PFD |
| Charge Pump | Precision programmable charge pump |
| Reference Divider | Programmable |
| Example Loop Phase Margin | 45 degrees |
| 패키지 | 20-lead LFCSP, 4 x 4 mm |
| Production Status | Production |
ADF4107BCP 20-lead lfcsp, 4 x 4 mm 핀 구성 가이드
ADF4107BCP(20-lead lfcsp, 4 x 4 mm 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: ADF4107BCP.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ADF4107BCP 적합 용도: 6 애플리케이션s: Wireless Receiver Local Oscillator, Wireless Transmitter Up-Conversion, RF Down-Conversion and Mixer LO, Communications Test Equipment, Instrumentation Signal Sources, RF Communication Modules.
Wireless Receiver Local Oscillator
The ADF4107BCP fits a wireless receiver local-oscillator block because it synthesizes frequencies up to 7.0 GHz with a low-noise digital phase-frequency detector, precision charge pump, and programmable dual-modulus prescaler. Place the synthesizer between the crystal reference and the receiver VCO, then use a 3.3 V supply for the main circuit and the separate VP rail as required by the loop-filter and tuning-voltage design. The published -83 dBc/Hz phase noise at 1 kHz offset provides a useful baseline, but the external reference, VCO, and loop filter determine the final receiver noise performance.
추천
Wireless Transmitter Up-Conversion
In a wireless transmitter up-conversion chain, the ADF4107BCP can generate the local-oscillator reference used by a mixer while the transmitter RF path handles power amplification and filtering. Its programmable reference divider, 6-bit A counter, 13-bit B counter, and dual-modulus prescaler permit deterministic integer-N frequency planning below the 7.0 GHz limit. The separate VP supply is valuable because it provides tuning-voltage headroom for the external VCO and charge-pump loop filter. Designers should verify spur levels against the transmitter mask and include VCO phase noise in the end-to-end calculation.
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RF Down-Conversion and Mixer LO
The ADF4107BCP is applicable to receiver down-conversion when a stable, programmable local oscillator is required below 7.0 GHz. Its integer-N architecture uses programmable reference and feedback division, while the precision charge pump drives an external passive loop filter. A typical implementation accepts the board reference, programs the A and B counters plus the dual-modulus prescaler through the serial interface, and supplies the VCO tuning node through the charge-pump filter. Performance depends on reference quality and loop bandwidth, so the -83 dBc/Hz typical figure at 1 kHz offset should be treated as a component-level reference rather than final system phase noise.
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Communications Test Equipment
The ADF4107BCP can support programmable local-oscillator generation in communications test equipment requiring accurate, repeatable RF frequencies. Its 7.0 GHz operating limit and 3.3 V supply fit compact instrument architectures, while programmable counters allow the synthesizer to be configured for multiple test channels. The external loop filter remains a critical design element: component values should be calculated for the intended phase margin and loop bandwidth rather than copied without considering the reference and VCO. The device's typical -83 dBc/Hz phase noise and spurs better than -70 dBc are useful benchmarks for close-in signal assessment.
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Instrumentation Signal Sources
The ADF4107BCP is suitable for instrumentation that generates a controlled RF local oscillator for measurement or stimulus purposes. Programmable integer division makes frequency changes repeatable, and the 3.3 V architecture simplifies integration with modern control hardware. The design must nevertheless provide an accurate reference source and carefully filtered charge-pump output. A loop with adequate phase margin reduces unwanted modulation of the VCO, while excessive bandwidth can increase noise and reference multiplication effects. Before updating test limits, evaluate the complete reference-to-output phase-noise budget and the contribution from the external VCO.
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RF Communication Modules
The ADF4107BCP can support RF communication modules that require an integrated programmable frequency synthesizer beneath 7.0 GHz. Its low-noise digital PFD and precision charge pump are useful when the module needs deterministic integer-N channel generation, while the separate VP rail allows the tuning range to be tailored to the external VCO. The compact 20-lead LFCSP preserves board area, although careful layout is required to keep the reference and charge-pump paths compact. Validate reference spur coupling, loop-filter component tolerances, and supply decoupling before using the module in a production radio design.
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추천 제품 요약
엔지니어링 참조 데이터: ADF4107BCP — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADF4107BCPZ | ADF4107BCPZ-REEL7 | ADF4107BCP-REEL7 |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 20-lead LFCSP | 20-lead LFCSP - same | 20-lead LFCSP - same | 20-lead LFCSP - same |
| Maximum Frequency | 7.0 GHz | 7.0 GHz | 7.0 GHz | 7.0 GHz |
| Power Supply | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| System Support | 3 V systems | 3 V systems | 3 V systems | 3 V systems |
| Typical Phase Noise | -83 dBc/Hz at 1 kHz offset | -83 dBc/Hz at 1 kHz offset | -83 dBc/Hz at 1 kHz offset | -83 dBc/Hz at 1 kHz offset |
| Typical Spurs | Better than -70 dBc | Better than -70 dBc | Better than -70 dBc | Better than -70 dBc |
| Synthesizer Architecture | Integer-N with programmable dual-modulus prescaler | Integer-N with programmable dual-modulus prescaler | Integer-N with programmable dual-modulus prescaler | Integer-N with programmable dual-modulus prescaler |
| A Counter | 6-bit | 6-bit | 6-bit | 6-bit |
| B Counter | 13-bit | 13-bit | 13-bit | 13-bit |
| Charge-Pump Supply | Separate VP rail | Separate VP rail | Separate VP rail | Separate VP rail |
주요 차별점
- No identified electrical-performance penalty for the verified Z ordering option (vs ADF4107BCPZ)
- Production ordering flexibility without changing the PCB land pattern (vs ADF4107BCPZ-REEL7)
- Direct reel-ordering alternative for manufacturing replenishment (vs ADF4107BCP-REEL7)
- Separate VP rail supports extended loop-filter tuning voltage (vs ADF4158CCPZ)
설계 노트
Keep the reference input, charge-pump output, and loop-filter return paths compact because external routing can degrade phase noise and introduce spurious coupling. Place the loop-filter components close to the charge-pump output and VCO tuning node, use a continuous ground reference under the device where the package drawing permits, and isolate the sensitive reference path from switching supplies. The charge-pump output is documented on pin 2, so its connection should follow the manufacturer layout example rather than a generic PLL arrangement.
Treat the 3.3 V supply and separate VP rail as distinct design rails. The main supply powers the synthesizer, while VP supports extended charge-pump tuning voltage and must be selected from the external VCO and loop-filter requirements. Check absolute maximum voltage, decoupling, startup sequencing, and VP ripple against the current Analog Devices data sheet. An incorrectly chosen VP level can clamp the tuning range, increase charge-pump distortion, or stress internal circuitry even when the nominal 3.3 V rail is correct.
Do not copy loop-filter values without recalculating them for the actual reference frequency, prescaler, charge-pump current, VCO gain, and required phase margin. The manufacturer example targets 45 degrees of overall phase margin, but that value does not transfer automatically to every VCO or channel plan. Also avoid comparing the published -83 dBc/Hz phase noise directly with a complete system measurement; reference noise multiplied by the feedback ratio and the external VCO can dominate the final result.
Verify reference spur and phase-noise performance at the synthesizer input because integer division can multiply reference close-in noise toward the carrier. Use a clean crystal oscillator or reference with adequate isolation, and keep digital programming activity away from sensitive reference and charge-pump nodes. The published spur target is better than -70 dBc under the manufacturer's specified conditions; board-level coupling, supply ripple, and an unsuitable reference may prevent the final design from meeting that result.
규정 준수 정보
The supplied verified excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification status. AEC-Q100 is not applicable because this is a frequency-synthesizer IC rather than an automotive-qualified device in the supplied data.
