Part A
ADF4159CCPZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5118 PCS
- Package
- WFQFN-24
- Series
- Clock-Timing - Clock Generators, PLLs, Frequency Synthesizers
Replacement verdict
Not a drop-in replacement
The ADF4159CCPZ and ADF4107BCP are not drop-in replacements for one another. Although both are integer-N/fractional-N PLL frequency synthesizers in a 20-lead LFCSP package, they differ fundamentally in their synthesis architecture, maximum operating frequency, and modulation capabilities. The ADF4159CCPZ is a 13 GHz fractional-N synthesizer with integrated ramp and frequency modulation features, while the ADF4107BCP is a 7 GHz integer-N PLL synthesizer intended for simpler fixed-frequency applications. Designers must revalidate the loop filter, reference path, and control interface before considering substitution.
Different synthesis architecture
Different maximum frequency
Different modulation capability
Different register interface
Parts at a glance
Part B
ADF4107BCP
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5195 PCS
- Package
- WFQFN-20
- 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 | ADF4107BCP | Why it matters |
|---|---|---|---|
| Function Type | Fractional-N frequency synthesizer with integrated VCO modulator (ramp/sweep capability) | Integer-N frequency synthesizer (PLL only) | Defines the core architecture; fractional-N supports finer frequency resolution and modulation, while integer-N is simpler and suited to fixed-channel designs. |
| Maximum RF Input Frequency | 13 GHz | 7 GHz | Determines the highest frequency the PLL can synthesize; a higher limit enables use in higher-band applications. |
| Maximum PFD Frequency | 110 MHz | 104 MHz | Affects phase noise and loop bandwidth; higher PFD frequency generally allows wider loop bandwidth and lower in-band phase noise. |
| Modulus / Fractional Resolution | 25-bit fractional modulus (up to 33,554,431) | Integer-N only (no fractional modulus) | Fractional resolution enables very fine frequency steps and modulation; integer-N designs cannot achieve sub-PFD step sizes without changing reference. |
| Integrated VCO | No (external VCO required) | No (external VCO required) | Both require an external VCO, so board-level design must include a VCO and loop filter for either part. |
| Ramp / Sweep Generation | Yes (integrated ramp/sweep with programmable step and dwell) | No | Integrated ramp capability is essential for FMCW radar and swept-frequency applications; the integer-N part cannot generate ramps internally. |
| Supply Voltage | 3.0 V to 3.6 V | 2.7 V to 3.3 V | Supply range must match the system rail; slight differences affect compatibility with existing power designs. |
| Package | 32-lead LFCSP (5 mm x 5 mm) | 20-lead LFCSP (4 mm x 4 mm) | Different footprints and pin counts mean the parts are not drop-in replacements and require separate PCB layouts. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical industrial temperature range supports use in the same environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4159CCPZ | ADF4107BCP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | - | Clock/Frequency Synthesizer (RF) |
| PLL | Yes | Yes |
| Input | CMOS, TTL | CMOS |
| Output | CMOS | Clock |
| Ratio - Input: Output | 2:1 | 2:1 |
| Differential - Input: Output | Yes/No | Yes/No |
| Frequency - Max | 13GHz | 7GHz |
| Divider / Multiplier | Yes/Yes | No/No |
| Voltage - Supply | 1.62V ~ 3.45V | 2.7V ~ 3.3V |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Circuits | 1 | - |
| Operating Temperature | -40°C ~ 125°C | - |
Frequently asked questions
What are the primary functional differences between the ADF4159CCPZ and the ADF4107BCP?
The ADF4159CCPZ is a 13 GHz fractional-N frequency synthesizer with integrated modulation capability, designed for FMCW radar and frequency modulation applications. The ADF4107BCP is a 7 GHz integer-N PLL frequency synthesizer intended for general-purpose local oscillator generation. The ADF4159CCPZ supports fractional-N operation and waveform modulation, while the ADF4107BCP operates in integer-N mode only.
Are the ADF4159CCPZ and ADF4107BCP pin-compatible or package-compatible?
No. The ADF4159CCPZ is supplied in a 24-lead LFCSP package, while the ADF4107BCP is supplied in a 20-lead LFCSP package. The differing package sizes, pin counts, and pin assignments prevent direct PCB footprint compatibility between the two devices.
What is the maximum RF input frequency for each device?
The ADF4159CCPZ supports RF input frequencies up to 13 GHz. The ADF4107BCP supports RF input frequencies up to 7 GHz. The ADF4159CCPZ therefore covers a higher frequency range suitable for microwave and radar applications.
Do both devices support fractional-N synthesis?
No. The ADF4159CCPZ is a fractional-N synthesizer supporting fractional divider ratios and programmable modulation waveforms. The ADF4107BCP is an integer-N synthesizer and does not support fractional-N operation.
What are the typical supply voltage requirements for these devices?
Both the ADF4159CCPZ and the ADF4107BCP operate from a nominal 3.0 V to 3.6 V supply, with a typical analog and digital supply of 3.3 V. Designers should consult the respective manufacturer datasheets for detailed supply decoupling and voltage limits.
Can the ADF4159CCPZ be used as a drop-in replacement for the ADF4107BCP in an existing design?
No. The devices differ in package footprint, pin count, frequency range, and synthesis architecture (fractional-N versus integer-N). A direct drop-in replacement is not possible; redesign of the PCB layout, loop filter, and control software would be required.
Which device is better suited for FMCW radar applications?
The ADF4159CCPZ is specifically designed with integrated modulation waveform generation and fractional-N capability, making it suitable for FMCW radar and frequency-modulated applications. The ADF4107BCP, being an integer-N synthesizer without modulation features, is not intended for FMCW radar waveform generation.