Part A
ADF4153ABRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6452 Stückzahl
- Package
- TSSOP-16
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Replacement verdict
Compatible functional replacement candidate
The ADF4153ABRUZ and ADF4118YRUZ are both fractional-N PLL frequency synthesizers from Analog Devices in a compatible TSSOP-16 package, sharing the same supply voltage range and 3-wire serial interface, so the ADF4153ABRUZ can serve as a functional replacement candidate for the ADF4118YRUZ. However, the two devices differ in maximum operating frequency and RF input sensitivity, so the replacement must be validated against the target frequency plan and loop filter design before adoption.
Package Type
High match
Supply Voltage Range
High match
Maximum Operating Frequency
Validation required
RF Input Sensitivity
Validation required
Parts at a glance
Part B
ADF4118YRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5918 Stückzahl
- Package
- TSSOP-16
- 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 | ADF4153ABRUZ | ADF4118YRUZ | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 4 GHz | 3 GHz | Determines the highest frequency the PLL synthesizer can operate at; the ADF4153 supports higher-frequency applications. |
| Number of Programmable Modulus Bits (Fractional) | 4-bit fractional (fractional-N) | Integer-N only | Fractional-N capability allows finer frequency resolution and lower phase noise for a given reference, which is a fundamental architectural difference affecting substitutability. |
| Phase Detector Frequency | Up to 32 MHz | Up to 55 MHz | Higher phase detector frequency enables wider loop bandwidth and faster settling; the ADF4118 supports a higher PFD rate. |
| Supply Voltage Range | 2.7 V to 3.3 V | 2.7 V to 3.3 V | Both operate over the same supply range, so power supply compatibility is maintained between the two parts. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Identical package and pin count simplify board-level replacement and layout reuse. |
| Normalized Phase Noise Floor | -216 dBc/Hz (typical) | -212 dBc/Hz (typical) | Lower phase noise floor improves spectral purity of the synthesized signal, which is critical for RF system performance. |
| Charge Pump Current (Programmable) | 0.625 mA to 5 mA | 0.625 mA to 5 mA | Programmable charge pump current allows loop filter optimization; matching ranges ease design migration. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical industrial temperature range ensures both parts suit the same environmental conditions. |
| Interface Type | 3-wire SPI | 3-wire SPI | Same serial interface protocol allows firmware and microcontroller compatibility across both devices. |
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 | ADF4153ABRUZ | ADF4118YRUZ |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | - | ADF4118 |
| Part Status | Active | Active |
| PLL | Yes | Yes |
| Input | CMOS, TTL | CMOS, TTL |
| Output | Clock | Clock |
| Number of Circuits | 1 | 1 |
| Ratio - Input: Output | 2:1 | 2:1 |
| Differential - Input: Output | Yes/No | Yes/No |
| Frequency - Max | 4GHz | 3GHz |
| Divider / Multiplier | No/Yes | Yes/No |
| Voltage - Supply | 2.7V ~ 3.3V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Type | Fractional N Synthesizer (RF) | - |
Frequently asked questions
What are the key differences between the ADF4153ABRUZ and ADF4118YRUZ?
The ADF4153ABRUZ is a fractional-N PLL frequency synthesizer, while the ADF4118YRUZ is an integer-N PLL frequency synthesizer. The ADF4153ABRUZ supports fractional-N operation with a programmable modulus, whereas the ADF4118YRUZ uses integer-N division only. Both are housed in 16-lead TSSOP packages and operate from a 3 V supply, but their synthesizer architectures and maximum RF input frequencies differ.
What is the maximum RF input frequency for each device?
The ADF4153ABRUZ has a maximum RF input frequency of 4 GHz. The ADF4118YRUZ has a maximum RF input frequency of 3 GHz. These values are specified in the respective Analog Devices datasheets.
Do the ADF4153ABRUZ and ADF4118YRUZ share the same package and pinout?
Both devices are offered in a 16-lead TSSOP package. However, the pin functions and internal architecture differ because one is fractional-N and the other is integer-N. Designers must consult the respective datasheets before considering any board-level substitution, as the pin assignments are not identical.
What is the operating supply voltage range for these PLL synthesizers?
Both the ADF4153ABRUZ and ADF4118YRUZ operate from a supply voltage range of 2.7 V to 3.3 V, with a nominal 3 V supply. This is specified in the Analog Devices datasheets for both devices.
Can the ADF4153ABRUZ and ADF4118YRUZ be used in the same application interchangeably?
No, they are not directly interchangeable. The ADF4153ABRUZ is a fractional-N synthesizer, while the ADF4118YRUZ is an integer-N synthesizer. Their register maps, programming interfaces, and phase noise performance characteristics differ. A direct replacement would require redesign of the loop filter, register programming, and validation of the RF performance against the target specification.
What are the typical applications for each device?
The ADF4153ABRUZ, as a fractional-N synthesizer, is typically used in applications requiring fine frequency resolution and low phase noise, such as wireless infrastructure, microwave point-to-point links, and instrumentation. The ADF4118YRUZ, as an integer-N synthesizer, is commonly used in cost-sensitive RF applications such as wireless handsets, CATV equipment, and general-purpose frequency synthesis where integer-N division is sufficient.
What is the phase noise performance difference between the two devices?
The ADF4153ABRUZ and ADF4118YRUZ have different phase noise specifications due to their different architectures. The fractional-N architecture of the ADF4153ABRUZ allows for lower phase noise at a given frequency offset when configured with an appropriate loop filter, while the integer-N ADF4118YRUZ has a normalized phase noise floor specified in its datasheet. Designers should refer to the respective Analog Devices datasheets for the exact phase noise figures under specific operating conditions.