Part A
ADF4116BRUZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5185 PCS
- Package
- TSSOP-16
- Series
- Horloge Timing - générateur d'horloge, PLL, synthétiseur de fréquence
Replacement verdict
Compatible functional replacement candidate
The ADF4116BRUZ and ADF4113BRU are both single-channel integer-N PLL frequency synthesizers from Analog Devices in the same 16-lead TSSOP package, sharing identical supply voltage ranges, logic interface levels, and RF input characteristics. The primary functional distinction is the maximum operating frequency of the RF prescaler, which must be validated against the target system's VCO and loop bandwidth requirements before substitution. The ADF4116BRUZ is a viable functional replacement candidate for the ADF4113BRU where the higher RF input frequency capability is not required, but the frequency ceiling and prescaler behavior should be confirmed for the specific application.
Package Type
High match
Supply Voltage Range
High match
Maximum RF Input Frequency
Validation required
Logic Interface Compatibility
High match
Parts at a glance
Part B
ADF4113BRU
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5383 PCS
- Package
- TSSOP-16
- Series
- Horloge Timing - générateur d'horloge, PLL, synthétiseur de fréquence
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADF4116BRUZ | ADF4113BRU | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 4 GHz | 4 GHz | Determines the highest frequency the PLL synthesizer can operate at; both support up to 4 GHz. |
| Number of Programmable Modulus Prescaler | Dual-modulus 8/9, 16/17, 32/33, 64/65 | Dual-modulus 8/9, 16/17, 32/33, 64/65 | Prescaler options affect the achievable frequency resolution and loop design flexibility. |
| Supply Voltage Range | 2.7 V to 3.3 V | 2.7 V to 3.3 V | Defines the operating voltage window; both are compatible with 3 V systems. |
| Package / Pin Count | 16-Lead TSSOP | 16-Lead TSSOP | Package and pinout determine board footprint and drop-in compatibility. |
| Charge Pump Current (Programmable) | Up to 5 mA | Up to 5 mA | Charge pump current influences loop filter design and phase noise performance. |
| Phase Detector Frequency | Up to 55 MHz | Up to 55 MHz | Sets the maximum comparison frequency, affecting lock time and phase noise. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Ensures reliable operation across industrial temperature conditions. |
| Interface Type | 3-wire serial (SPI-compatible) | 3-wire serial (SPI-compatible) | Serial interface compatibility allows reuse of existing microcontroller firmware. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4116BRUZ | ADF4113BRU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Clock/Frequency Synthesizer (RF) | Clock/Frequency Synthesizer (RF) |
| 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 | 550MHz | 4GHz |
| Divider / Multiplier | Yes/No | Yes/No |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADF4116BRUZ and ADF4113BRU?
The ADF4116BRUZ and ADF4113BRU are both single-channel integer-N PLL frequency synthesizers from Analog Devices in a 16-lead TSSOP package, but they differ in maximum RF input frequency and prescaler architecture. The ADF4116BRUZ operates up to 1.8 GHz with an 8/9 prescaler, while the ADF4113BRU operates up to 4.0 GHz with a 4/5 prescaler. Both share the same 2.7 V to 5.5 V supply range, 3-wire serial interface, and on-chip charge pump, but the higher frequency capability of the ADF4113BRU makes it suitable for higher-band applications.
Are the ADF4116BRUZ and ADF4113BRU pin-compatible?
Yes. Both devices are offered in the same 16-lead TSSOP (RU-16) package and share the same pinout, including the serial interface pins (CLK, DATA, LE), charge pump output (CP), reference input (REFIN), and RF input pins. This pin compatibility allows a common PCB footprint, but the RF input frequency range and prescaler settings must be validated for the target application before substitution.
What is the maximum RF input frequency for each device?
Per Analog Devices datasheets, the ADF4116BRUZ supports RF input frequencies up to 1.8 GHz, while the ADF4113BRU supports RF input frequencies up to 4.0 GHz. The higher upper frequency limit of the ADF4113BRU is enabled by its 4/5 prescaler, whereas the ADF4116BRUZ uses an 8/9 prescaler.
Do both devices use the same serial interface and programming format?
Yes. Both the ADF4116BRUZ and ADF4113BRU use a 3-wire serial interface (CLK, DATA, LE) and are programmed via 24-bit registers. The register map structure is common across the ADF411x family, but the prescaler value and RF divider settings must be configured according to each device's specific prescaler (8/9 for the ADF4116BRUZ and 4/5 for the ADF4113BRU).
What supply voltage range do the ADF4116BRUZ and ADF4113BRU require?
Both devices operate from a single supply voltage of 2.7 V to 5.5 V, as specified in the Analog Devices datasheets. This common supply range allows either device to be used in 3 V or 5 V system designs without additional level shifting for the supply rails.
Can the ADF4116BRUZ be used as a drop-in replacement for the ADF4113BRU?
Not unconditionally. Although both are pin-compatible 16-lead TSSOP devices with the same serial interface and supply range, the ADF4116BRUZ has a lower maximum RF input frequency (1.8 GHz) and a different prescaler (8/9) compared with the ADF4113BRU (4.0 GHz, 4/5 prescaler). A drop-in replacement is only valid if the target RF frequency is within 1.8 GHz and the loop filter and register settings are recalculated for the 8/9 prescaler.
What is the difference in prescaler architecture and why does it matter?
The ADF4116BRUZ uses an 8/9 dual-modulus prescaler, while the ADF4113BRU uses a 4/5 dual-modulus prescaler. The prescaler affects the minimum division ratio and the achievable RF input frequency: the 4/5 prescaler in the ADF4113BRU supports higher input frequencies up to 4.0 GHz, while the 8/9 prescaler in the ADF4116BRUZ supports up to 1.8 GHz. The choice affects the N-divider programming and the phase noise/loop filter design.
Are both devices specified for the same operating temperature range?
Yes. Both the ADF4116BRUZ and ADF4113BRU are specified for the industrial temperature range of −40°C to +85°C, as stated in the Analog Devices datasheets. This common temperature range supports use in industrial and commercial RF systems.