Part A
ADF4110BRUZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2777 ПКС
- Package
- TSSOP-16
- Series
- Часовое время - Часовые генераторы, PLL, частотные синтезаторы
Replacement verdict
Compatible functional replacement candidate
The ADF4110BRUZ and ADF4118BRU are both single PLL frequency synthesizers from Analog Devices in the same 16-lead TSSOP package, sharing a common pinout and 3 V supply architecture, so they are functionally interchangeable in many designs. However, the ADF4118BRU offers a higher maximum RF input frequency and a wider operating temperature range, while the ADF4110BRUZ provides a lower minimum supply voltage. Designers should validate RF frequency requirements and supply tolerance before substituting one for the other.
Package Type
High match
Supply Voltage Range
High match
Maximum RF Input Frequency
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADF4118BRU
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9814 ПКС
- Package
- TSSOP-16
- Series
- Часовое время - Часовые генераторы, PLL, частотные синтезаторы
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADF4110BRUZ | ADF4118BRU | Why it matters |
|---|---|---|---|
| Maximum Operating Frequency | 1 GHz | 3 GHz | Determines the highest RF input frequency the PLL synthesizer can handle; a higher limit allows use in higher-band applications. |
| Number of Programmable Modulus Bits | 8/9 (dual-modulus prescaler) | 8/9, 16/17, 32/33, 64/65 (selectable) | More selectable prescaler ratios enable a wider range of loop division and reference frequencies for flexible frequency planning. |
| Maximum RF Input Frequency (Prescaler) | 1 GHz | 3 GHz | The prescaler input frequency ceiling directly limits the usable VCO band and thus the application range. |
| Phase Detector Frequency | Up to 55 MHz | Up to 55 MHz | Higher phase detector frequency improves phase noise and lock time; both share the same limit here. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Compatible supply range ensures the parts can be used in the same power rail designs without level shifting. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Identical package and pinout allow drop-in board replacement without layout changes. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Matching temperature ratings confirm both parts suit the same industrial environments. |
| Charge Pump Current (Programmable) | 0.625 mA to 5 mA | 0.625 mA to 5 mA | Charge pump current affects loop bandwidth and phase noise; identical ranges mean loop filter designs can be reused. |
| Interface | 3-wire serial (SPI-compatible) | 3-wire serial (SPI-compatible) | Same serial programming interface allows firmware and microcontroller code to be reused across both parts. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4110BRUZ | ADF4118BRU |
|---|---|---|
| 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 | 3GHz |
| 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 ADF4110BRUZ and the ADF4118BRU?
The ADF4110BRUZ and ADF4118BRU are both single-channel integer-N PLL frequency synthesizers from Analog Devices, but they differ in maximum RF input frequency and package/ordering grade. The ADF4110BRUZ supports RF input up to 550 MHz, while the ADF4118BRU supports RF input up to 3.0 GHz. The ADF4110BRUZ is supplied in a 16-lead TSSOP (RU suffix) in RoHS-compliant form (Z suffix), whereas the ADF4118BRU is supplied in a 16-lead TSSOP without the RoHS Z designation.
Are the ADF4110BRUZ and ADF4118BRU pin-compatible?
Both devices are offered in a 16-lead TSSOP package with the same pin count and Analog Devices RU package designation, so they share the same package footprint and pinout family. However, because the maximum RF input frequency differs (550 MHz for the ADF4110BRUZ versus 3.0 GHz for the ADF4118BRU), a direct drop-in substitution should only be made after verifying the target design's frequency requirements against the respective datasheets.
What is the maximum RF input frequency of each device?
Per Analog Devices datasheets, the ADF4110BRUZ has a maximum RF input frequency of 550 MHz, while the ADF4118BRU has a maximum RF input frequency of 3.0 GHz. The ADF4118BRU is therefore suited to higher-frequency synthesizer applications, whereas the ADF4110BRUZ targets lower-frequency designs.
Do both parts share the same integer-N PLL architecture and programming interface?
Yes. Both the ADF4110BRUZ and ADF4118BRU are integer-N PLL frequency synthesizers from the same Analog Devices ADF411x family, featuring a programmable dual-modulus prescaler, programmable reference divider, and programmable charge pump current settings. They are programmed via a serial interface using the same register structure, so firmware developed for one family member is generally portable to the other, subject to frequency-range validation.
What supply voltage range do the ADF4110BRUZ and ADF4118BRU require?
Both devices operate from a nominal 3 V supply, with the Analog Devices datasheets specifying an operating supply range of 2.7 V to 3.3 V. Designs should be validated against the specific datasheet revision for the exact part number being used.
What is the significance of the Z suffix in ADF4110BRUZ compared with ADF4118BRU?
The Z suffix on ADF4110BRUZ denotes RoHS-compliant packaging per Analog Devices ordering conventions. The ADF4118BRU part number does not carry the Z suffix, indicating a non-RoHS orderable variant. For new designs with RoHS compliance requirements, the Z-suffixed orderable part should be selected where available.
Can the ADF4118BRU be used as a replacement for the ADF4110BRUZ in an existing design?
Because the ADF4118BRU covers a wider RF input range (up to 3.0 GHz) than the ADF4110BRUZ (up to 550 MHz) and shares the same 16-lead TSSOP package family and integer-N PLL architecture, it may serve as a functional replacement in many designs. However, the designer must verify supply voltage, charge pump settings, loop filter component values, and RoHS status against the target application before substituting, since the ADF4118BRU is not the Z-suffixed RoHS variant.