Part A
ADF4159CCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5118 Stückzahl
- Package
- WFQFN-24
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Replacement verdict
Compatible functional replacement candidate
The ADF4169CCPZ and ADF4159CCPZ are functionally compatible fractional-N PLL synthesizers sharing the same 24-lead LFCSP package, supply range, and 13 GHz maximum RF output, making the ADF4169CCPZ a viable replacement candidate for the ADF4159CCPZ in most designs. Designers should validate the additional integrated waveform-generation and ramp features of the ADF4169CCPZ against their specific modulation and timing requirements before final qualification.
Package Type
High match
Frequency Range
High match
Supply Voltage
High match
Modulation Features
Validation required
Parts at a glance
Part B
ADF4169CCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2362 Stückzahl
- Package
- WFQFN-24
- Series
- Takt- und anwendungsspezifisch
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADF4169CCPZ | ADF4159CCPZ | Why it matters |
|---|---|---|---|
| Frequency Range (RF Output) | Up to 13.6 GHz | Up to 13 GHz | Defines the maximum synthesizer output frequency; the ADF4169 extends coverage slightly higher, which can matter for upper-band radar and instrumentation applications. |
| Maximum PFD / Reference Frequency | 250 MHz | 250 MHz | The phase-frequency detector rate sets the achievable step size and phase noise trade-off; identical here, so loop filter design constraints are similar. |
| Integrated VCO | No (external VCO required) | No (external VCO required) | Both are fractional-N synthesizers requiring an external VCO; this affects board area and BOM but is the same for both parts. |
| Modulation / Ramp Capability | Fast ramp / frequency modulation with on-chip ramp generator | Fast ramp / frequency modulation with on-chip ramp generator | On-chip ramp generation enables FMCW radar chirps without external DACs; both support this, so radar use cases are equally served. |
| Supply Voltage | 3.0 V to 3.6 V (analog/digital), charge pump up to 5 V | 3.0 V to 3.6 V (analog/digital), charge pump up to 5 V | Determines power rail requirements and compatibility with surrounding circuitry; identical rails simplify drop-in substitution. |
| Package | 32-lead LFCSP (5 mm x 5 mm) | 32-lead LFCSP (5 mm x 5 mm) | Footprint and thermal characteristics must match for PCB compatibility; identical packages allow the same layout. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range suitability; identical ranges mean equal environmental qualification. |
| Phase Noise (typical, normalized) | -220 dBc/Hz (normalized floor, typical) | -220 dBc/Hz (normalized floor, typical) | Phase noise floor impacts spectral purity and radar range resolution; matching figures indicate comparable RF performance. |
| Interface | 3-wire SPI | 3-wire SPI | Digital control interface compatibility with host MCU/FPGA; identical SPI simplifies firmware reuse. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4159CCPZ | ADF4169CCPZ |
|---|---|---|
| Part Status | Active | Active |
| PLL | Yes | - |
| Input | CMOS, TTL | - |
| Output | CMOS | - |
| Number of Circuits | 1 | - |
| Ratio - Input: Output | 2:1 | - |
| Differential - Input: Output | Yes/No | - |
| Frequency - Max | 13GHz | - |
| Divider / Multiplier | Yes/Yes | - |
| Voltage - Supply | 1.62V ~ 3.45V | - |
| Operating Temperature | -40°C ~ 125°C | - |
| Mounting Type | Surface Mount | - |
Frequently asked questions
What are the ADF4169CCPZ and ADF4159CCPZ?
Both are 13 GHz fractional-N frequency synthesizers from Analog Devices. The ADF4159CCPZ is a 13 GHz fractional-N synthesizer with modulation capability, and the ADF4169CCPZ is a 13 GHz fractional-N synthesizer with fast waveform generation (ramp) capability. Both are offered in a 24-lead LFCSP package.
What is the key functional difference between the ADF4169CCPZ and ADF4159CCPZ?
The ADF4169CCPZ adds a fast waveform generation (ramp) function with a dedicated ramp generator, enabling frequency ramp and frequency shift keying (FSK) modulation for radar and other applications. The ADF4159CCPZ provides fractional-N synthesis with modulation capability but does not include the dedicated fast ramp generator of the ADF4169.
Do the ADF4169CCPZ and ADF4159CCPZ share the same package and pinout?
Both devices are supplied in a 24-lead LFCSP package. Pin functions and register maps are largely compatible, but the ADF4169CCPZ includes additional ramp-related functionality, so designers should verify pin and register compatibility against the respective datasheets before substituting one for the other.
What is the maximum RF output frequency of these synthesizers?
Both the ADF4169CCPZ and ADF4159CCPZ support RF output frequencies up to 13 GHz, making them suitable for microwave and millimeter-wave applications such as radar, test equipment, and communications systems.
What is the maximum phase detector (PFD) frequency for these parts?
Both devices support a maximum phase frequency detector (PFD) frequency of 125 MHz, which allows a high comparison frequency and low phase noise in fractional-N operation.
Which device should be selected for radar ramp applications?
The ADF4169CCPZ is the appropriate choice for applications requiring fast frequency ramps, such as frequency-modulated continuous-wave (FMCW) radar, because it integrates a dedicated fast waveform generation (ramp) function. The ADF4159CCPZ is better suited to general fractional-N synthesis with modulation where a dedicated fast ramp generator is not required.
Are the ADF4169CCPZ and ADF4159CCPZ drop-in replacements for each other?
They are not unconditionally drop-in replacements. Although both are 24-lead LFCSP 13 GHz fractional-N synthesizers with similar register structures, the ADF4169CCPZ includes additional ramp functionality. A substitution should only be made after validating register settings, pin functions, and firmware against the manufacturer datasheets for the target design.