Part A
ADF4153ABRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6452 Stückzahl
- Package
- TSSOP-16
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Replacement verdict
Not a drop-in replacement
The ADF4153ABRUZ and ADF4106SRU-EP are not drop-in replacements for one another. Although both are integer-N PLL frequency synthesizers in TSSOP-16 packages, they differ in maximum operating frequency, supply voltage range, and phase detector characteristics, and the ADF4106SRU-EP carries enhanced processing qualification. Designers must validate loop filter, reference, and interface compatibility before considering substitution.
Different maximum frequency
Different supply voltage range
Different phase detector frequency
Different qualification grade
Parts at a glance
Part B
ADF4106SRU-EP
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8217 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 | ADF4106SRU-EP | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 4 GHz | 6 GHz | Determines the highest frequency the PLL can synthesize; the ADF4106SRU-EP supports higher-frequency VCOs and applications. |
| Number of Programmable Modulus Bits (Fractional) | 4-bit (fractional-N) | Integer-N only | Fractional-N capability allows finer frequency resolution and lower phase noise trade-offs; the ADF4153ABRUZ supports fractional synthesis while the ADF4106SRU-EP is integer-N. |
| Maximum PFD Frequency | 32 MHz | 104 MHz | A higher phase frequency detector rate enables wider loop bandwidth and faster settling; the ADF4106SRU-EP allows a much higher PFD frequency. |
| Supply Voltage Range | 2.7 V to 3.3 V | 2.7 V to 3.3 V | Both operate over the same 3 V nominal supply range, so power-rail compatibility is maintained between the two parts. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Identical package and pin count simplify board-level substitution and layout reuse. |
| Normalized Phase Noise Floor | -216 dBc/Hz | -219 dBc/Hz | Lower phase noise floor improves spectral purity of the synthesized signal; the ADF4106SRU-EP offers a slightly better noise floor. |
| Programmable Charge Pump Current | Up to 5 mA | Up to 5 mA | Charge pump current range affects loop filter design and lock time; both provide comparable programmable current ranges. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching industrial temperature ranges ensure equivalent environmental robustness for both parts. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4153ABRUZ | ADF4106SRU-EP |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Fractional N Synthesizer (RF) | Frequency Synthesizer |
| 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 | 6GHz |
| Divider / Multiplier | No/Yes | Yes/No |
| Voltage - Supply | 2.7V ~ 3.3V | 2.7V ~ 3.3V |
| Operating Temperature | -40°C ~ 85°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the ADF4153ABRUZ and the ADF4106SRU-EP?
The ADF4153ABRUZ is a fractional-N frequency synthesizer with an integrated voltage-controlled oscillator (VCO) range of 2.2 GHz to 4.4 GHz, while the ADF4106SRU-EP is an integer-N PLL frequency synthesizer with a maximum operating frequency of 6 GHz and no integrated VCO. The ADF4153ABRUZ supports fractional-N operation for finer frequency resolution, whereas the ADF4106SRU-EP uses integer-N architecture.
Are the ADF4153ABRUZ and ADF4106SRU-EP pin-compatible or package-compatible?
No. The ADF4153ABRUZ is supplied in a 20-lead TSSOP package, while the ADF4106SRU-EP is supplied in a 16-lead TSSOP package. The different pin counts and pin functions prevent direct PCB footprint interchangeability without layout redesign.
What is the maximum RF input frequency for each device?
The ADF4153ABRUZ operates with an RF input frequency range of 0.5 GHz to 4.4 GHz. The ADF4106SRU-EP supports a maximum RF input frequency of 6 GHz. These limits are specified in the respective manufacturer datasheets.
Do both devices support the same serial interface and register programming?
Both devices use a 3-wire serial interface (SPI-compatible) for register programming, but their register maps and bit definitions differ because the ADF4153ABRUZ includes fractional-N registers (such as fractional modulus and phase registers) that are not present in the integer-N ADF4106SRU-EP. Firmware and register configurations are therefore not interchangeable.
Which device is better suited for low phase noise applications?
The ADF4106SRU-EP is specified with a normalized phase noise floor of -219 dBc/Hz, making it suitable for low phase noise integer-N synthesis. The ADF4153ABRUZ datasheet specifies a normalized phase noise floor of -216 dBc/Hz in fractional-N mode. Selection depends on the required loop bandwidth, reference frequency, and fractional spurs, which must be evaluated against the datasheet plots.
Can the ADF4153ABRUZ directly replace the ADF4106SRU-EP in an existing design?
No. Direct replacement is not possible without redesign because the devices differ in package pin count (20-lead vs 16-lead TSSOP), synthesis architecture (fractional-N vs integer-N), integrated VCO presence, maximum RF frequency, and register map. Any substitution requires schematic, layout, and firmware changes validated against the manufacturer datasheets.
What are the supply voltage and operating temperature ranges for these devices?
Both the ADF4153ABRUZ and ADF4106SRU-EP operate from a 2.7 V to 3.3 V supply. The ADF4153ABRUZ is specified over a -40°C to +85°C operating temperature range. The ADF4106SRU-EP is specified over a -40°C to +85°C operating temperature range as well. These values should be confirmed against the latest official datasheets before design release.