Part A
ADF41513BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6981 Stückzahl
- Package
- WFQFN-24
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Replacement verdict
Compatible functional replacement candidate
The ADF41513BCPZ is a higher-frequency successor to the ADF4159CCPZ, extending the upper operating limit from 13 GHz to 26.5 GHz while preserving the fractional-N PLL synthesizer architecture, 25-bit modulus resolution, and 3.3 V supply domain. Both devices share the same 4 × 4 mm LFCSP-24 footprint and serial SPI control interface, enabling a functional upgrade path where board-level revalidation of the loop filter and reference path is performed. Designers should confirm frequency plan, phase noise budget, and register map differences before substituting in an existing ADF4159CCPZ design.
Output Frequency Range
Validation required
Package Type
High match
Control Interface
High match
Phase Noise Performance
Validation required
Parts at a glance
Part B
ADF4159CCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5118 Stückzahl
- Package
- WFQFN-24
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADF4159CCPZ | ADF41513BCPZ | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 13 GHz | 13 GHz | Defines the highest frequency the PLL can synthesize; both cover the same upper band, so frequency coverage is equivalent. |
| Maximum Phase Detector / PFD Frequency | 110 MHz | 250 MHz | A higher PFD frequency allows wider loop bandwidth and lower in-band phase noise; the ADF41513 supports a significantly higher PFD rate. |
| Normalized In-Band Phase Noise Floor | -224 dBc/Hz | -234 dBc/Hz | Lower phase noise floor directly improves spectral purity and is a key differentiator for demanding RF synthesis applications. |
| Integrated RMS Jitter | Not specified in datasheet | 0.15 ps rms (typical) | Jitter performance affects signal integrity in high-speed converters and communications; the ADF41513 specifies a low jitter figure. |
| Ramp / Sweep Generation | Yes (dedicated ramp generator) | No | The ADF4159 includes a built-in ramp/sweep function for FMCW radar; the ADF41513 lacks this, limiting direct substitutability in radar designs. |
| Supply Voltage Range | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Both operate over the same analog/digital supply range, so power rail compatibility is identical. |
| Package | 32-lead LFCSP (5 mm x 5 mm) | 32-lead LFCSP (5 mm x 5 mm) | Identical package and footprint enable drop-in board compatibility without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ratings ensure equivalent environmental robustness for industrial and commercial use. |
| Interface | 3-wire SPI | 3-wire SPI | Same serial control interface simplifies firmware reuse and host processor compatibility. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF41513BCPZ | ADF4159CCPZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Integer-N/Fractional-N | - |
| PLL | Yes | Yes |
| Input | CML, CMOS | CMOS, TTL |
| Output | Clock | CMOS |
| Number of Circuits | 1 | 1 |
| Ratio - Input: Output | 2:1 | 2:1 |
| Differential - Input: Output | Yes/No | Yes/No |
| Frequency - Max | 26.5GHz | 13GHz |
| Divider / Multiplier | Yes/Yes | Yes/Yes |
| Voltage - Supply | 3.135V ~ 3.465V | 1.62V ~ 3.45V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADF4159CCPZ and the ADF41513BCPZ?
The ADF4159CCPZ is a 13 GHz fractional-N frequency synthesizer with integrated VCO and modulation capability, while the ADF41513BCPZ is a 26.5 GHz fractional-N frequency synthesizer without an integrated VCO. The ADF41513BCPZ offers a higher maximum RF input frequency and wider operating range, whereas the ADF4159CCPZ includes built-in frequency modulation and sweep functions suited for radar and FMCW applications.
Are the ADF4159CCPZ and ADF41513BCPZ pin-compatible?
No. The ADF4159CCPZ is supplied in a 24-lead LFCSP package, while the ADF41513BCPZ is supplied in a 32-lead LFCSP package. The different package sizes and pin counts mean they are not pin-compatible and cannot be dropped into the same PCB footprint without redesign.
What is the maximum RF input frequency for each device?
The ADF4159CCPZ supports RF input frequencies up to 13 GHz. The ADF41513BCPZ supports RF input frequencies up to 26.5 GHz, making it suitable for higher-frequency applications such as microwave and millimeter-wave systems.
Does either device include an integrated VCO?
The ADF4159CCPZ includes an integrated VCO, which simplifies design and reduces external component count. The ADF41513BCPZ does not include an integrated VCO and requires an external VCO or VCO module to complete the synthesizer loop.
Which device supports frequency modulation and sweep functions?
The ADF4159CCPZ supports frequency modulation and frequency sweep functions, making it well suited for FMCW radar and similar applications. The ADF41513BCPZ is a fractional-N synthesizer focused on high-frequency operation and does not include the same integrated modulation and sweep feature set.
What are the typical applications for each device?
The ADF4159CCPZ is typically used in FMCW radar, industrial radar, and applications requiring integrated modulation and sweep capability up to 13 GHz. The ADF41513BCPZ is typically used in higher-frequency microwave and millimeter-wave systems, including point-to-point radios, test equipment, and satellite communications, where RF input frequencies up to 26.5 GHz are required.
Can the ADF41513BCPZ directly replace the ADF4159CCPZ in an existing design?
No. The devices differ in package size, pin count, maximum RF frequency, and integrated VCO availability. A direct replacement is not possible; the design would require PCB layout changes, external VCO addition, and revalidation of the synthesizer loop and modulation requirements against the ADF41513BCPZ datasheet.