Part A
ADF4158CCPZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1970 PCS
- Package
- WFQFN-24
- Series
- Clock-Timing - Clock Generators, PLLs, Frequency Synthesizers
Replacement verdict
Compatible functional replacement candidate
The ADF4159CCPZ and ADF4158CCPZ share the same LFCSP-24 package, 3.0 V to 3.6 V supply range, and 3-wire SPI interface, making them pin-compatible fractional-N PLL synthesizers. However, the ADF4159CCPZ offers a wider RF bandwidth of up to 13 GHz versus 6.1 GHz for the ADF4158CCPZ, and adds ramp generation and frequency modulation capabilities not present in the ADF4158CCPZ. Designers should validate loop filter and modulation requirements before substituting, as the ADF4159CCPZ is a superset device suitable for most ADF4158CCPZ applications but not vice versa.
Package Type
High match
Supply Voltage Range
High match
Maximum RF Input Frequency
Validation required
Modulation and Ramp Features
Validation required
Parts at a glance
Part B
ADF4159CCPZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5118 PCS
- Package
- WFQFN-24
- Series
- Clock-Timing - Clock Generators, PLLs, Frequency Synthesizers
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 | ADF4158CCPZ | Why it matters |
|---|---|---|---|
| Maximum RF Output Frequency | 13 GHz | 6.1 GHz | Determines the highest frequency the PLL synthesizer can generate, directly limiting which applications the part can serve. |
| Maximum Reference Input Frequency | 300 MHz | 300 MHz | Sets the upper limit for the reference clock, affecting phase detector rate and achievable phase noise performance. |
| Phase Detector Frequency (Max) | 110 MHz | 110 MHz | Higher phase detector frequency generally improves in-band phase noise and loop bandwidth capability. |
| Modulation Capability | FMCW / Frequency ramp with fast ramp capability | FMCW / Frequency ramp | Defines whether the device supports frequency-modulated continuous-wave radar ramping, a key differentiator for radar applications. |
| Maximum Ramp Rate / Ramp Clock | Up to 25-bit ramp with fast ramp (PLL clock up to 110 MHz) | Up to 25-bit ramp (PLL clock up to 110 MHz) | Affects the speed and resolution of frequency sweeps used in FMCW radar and chirp generation. |
| Supply Voltage Range | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Must match the system power rail; identical ranges allow drop-in compatibility from a supply standpoint. |
| Package | 32-Lead LFCSP (5 mm x 5 mm) | 32-Lead LFCSP (5 mm x 5 mm) | Package footprint and pinout determine PCB layout compatibility and whether a direct board swap is possible. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Ensures the device meets environmental requirements of the target application. |
| Interface | 3-wire SPI | 3-wire SPI | Determines compatibility with the host microcontroller's communication bus and register programming scheme. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4158CCPZ | ADF4159CCPZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Fractional N Synthesizer (RF) | - |
| PLL | Yes | Yes |
| Input | CMOS, TTL | 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 | 6.1GHz | 13GHz |
| Divider / Multiplier | Yes/Yes | Yes/Yes |
| Voltage - Supply | 2.7V ~ 3.3V | 1.62V ~ 3.45V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the fundamental difference between the ADF4159CCPZ and the ADF4158CCPZ?
The ADF4159CCPZ is a 13 GHz fractional-N frequency synthesizer with integrated waveform generation capability (ramp and frequency modulation), while the ADF4158CCPZ is a 6.1 GHz fractional-N synthesizer with integrated waveform generation. The ADF4159CCPZ supports higher RF output frequencies and wider bandwidth operation than the ADF4158CCPZ.
Are the ADF4159CCPZ and ADF4158CCPZ pin-compatible?
Both devices are offered in a 24-lead LFCSP package with the same 4 mm × 4 mm footprint, and Analog Devices documents them with a common pinout for the core PLL functions. However, designers should verify the specific pin functions and register map against the respective datasheets before substituting one for the other in an existing layout.
What is the maximum RF output frequency of each device?
The ADF4159CCPZ supports RF output frequencies up to 13 GHz, while the ADF4158CCPZ supports RF output frequencies up to 6.1 GHz. The higher frequency range of the ADF4159CCPZ makes it suitable for applications such as automotive radar and microwave point-to-point links.
Do both devices support frequency ramp and modulation waveform generation?
Yes. Both the ADF4159CCPZ and ADF4158CCPZ integrate waveform generation circuitry that supports frequency ramps and frequency-shift keying (FSK) modulation, making them suitable for radar and frequency-modulated continuous-wave (FMCW) applications. The ADF4159CCPZ extends this capability to higher frequencies.
What is the maximum phase frequency detector (PFD) frequency for these devices?
Both the ADF4159CCPZ and ADF4158CCPZ specify a maximum phase frequency detector frequency of 32 MHz, per Analog Devices datasheets. This parameter is common to both devices and should be respected when selecting the loop filter and reference frequency.
Can the ADF4158CCPZ be used as a drop-in replacement for the ADF4159CCPZ?
No. Although both share a similar package and architecture, the ADF4158CCPZ has a lower maximum RF output frequency (6.1 GHz versus 13 GHz) and different register and performance specifications. A drop-in replacement is only valid if the target design operates within the ADF4158CCPZ's frequency and performance limits and all differences are validated against the datasheets.
What supply voltage and current consumption do these synthesizers require?
Both the ADF4159CCPZ and ADF4158CCPZ operate from a nominal 3.3 V supply (with a specified range of 2.7 V to 3.6 V) and typically draw approximately 30 mA to 40 mA depending on configuration, per Analog Devices datasheets. Designers should consult the exact electrical specifications table for the chosen device and operating mode.