Part A
ADF4107BRU
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2399 PCS
- Series
- Horloge Timing - générateur d'horloge, PLL, synthétiseur de fréquence
Replacement verdict
Compatible functional replacement candidate
The ADF4110BRUZ and ADF4107BRU are both single PLL frequency synthesizers from Analog Devices in a 16-lead TSSOP package, sharing the same supply range and 3-wire serial interface, so they are functionally comparable in many designs. However, the ADF4107BRU 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 planning, supply headroom, and thermal margin 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
ADF4110BRUZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2777 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 | ADF4110BRUZ | ADF4107BRU | Why it matters |
|---|---|---|---|
| Maximum Operating Frequency | 1.0 GHz | 7.0 GHz | Determines the highest RF input frequency the PLL can lock to; the ADF4107 supports much higher frequency applications. |
| Number of RF Inputs | 1 | 2 | A second RF input allows the ADF4107 to switch between two sources, enabling dual-band or redundant frequency synthesis. |
| Maximum Prescaler Value (P) | 32 | 32 | The dual-modulus prescaler sets the minimum channel spacing and division ratio range for the feedback counter. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 3.3 V | Defines the allowable power supply; the ADF4110 tolerates 5 V systems while the ADF4107 is limited to 3.3 V. |
| Maximum Supply Current | 7.5 mA | 13.5 mA | Affects power budget and thermal design; the higher-frequency ADF4107 consumes more current. |
| Package Type | 16-Lead TSSOP | 16-Lead TSSOP | Footprint and pin count must match for board-level substitutability; both share the same package outline. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts are rated for the same industrial temperature environments. |
| Charge Pump Current (Programmable) | 0.625 mA to 5 mA | 0.625 mA to 5 mA | Sets loop filter design and lock time; matching ranges allow similar loop dynamics when substituting. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4107BRU | ADF4110BRUZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Base Product Number | ADF4107 | - |
| Digi Key Programmable | Not Verified | - |
| 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 | 7GHz | 550MHz |
| Divider / Multiplier | No/No | Yes/No |
| Voltage - Supply | 2.7V ~ 3.3V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tube | - |
Frequently asked questions
What are the key differences between the ADF4110BRUZ and ADF4107BRU?
The ADF4110BRUZ is a fractional-N PLL synthesizer with an integrated VCO, while the ADF4107BRU is an integer-N PLL synthesizer without an integrated VCO. The ADF4110BRUZ operates up to 550 MHz RF input with an on-chip VCO covering 2.4 GHz, whereas the ADF4107BRU supports RF inputs up to 7 GHz and requires an external VCO. Both are housed in 16-lead TSSOP packages but differ in frequency range, architecture, and integration level.
Are the ADF4110BRUZ and ADF4107BRU pin-compatible?
No. Although both devices are offered in 16-lead TSSOP packages, their pin functions differ due to different architectures (fractional-N with integrated VCO versus integer-N without VCO). Pin assignments and external component requirements are not interchangeable, so direct PCB substitution is not possible without design changes.
What is the maximum RF input frequency for each device?
The ADF4110BRUZ supports RF input frequencies up to 550 MHz. The ADF4107BRU supports RF input frequencies up to 7 GHz. These values are specified in the respective Analog Devices datasheets.
Does either device include an integrated VCO?
Yes, the ADF4110BRUZ includes an integrated voltage-controlled oscillator (VCO). The ADF4107BRU does not include an integrated VCO and requires an external VCO for operation.
What are the supply voltage requirements for the ADF4110BRUZ and ADF4107BRU?
Both devices operate from a nominal 3 V supply, with an allowed supply range of 2.7 V to 3.3 V as specified in the Analog Devices datasheets. Designers should verify the exact limits and decoupling requirements in the official datasheets before finalizing power supply designs.
Can the ADF4110BRUZ directly replace the ADF4107BRU in an existing design?
No. The two devices differ in PLL architecture (fractional-N versus integer-N), RF frequency range (550 MHz versus 7 GHz), and VCO integration. A direct replacement would require redesign of the loop filter, external VCO circuitry (for the ADF4107BRU), and verification of the RF front end. Consult the respective datasheets and application notes before considering any substitution.
What package type do the ADF4110BRUZ and ADF4107BRU use?
Both devices are available in a 16-lead TSSOP package. The "RUZ" and "RU" suffixes in the part numbers correspond to the TSSOP package option per Analog Devices ordering information. Designers should confirm the exact package and ordering code in the official datasheet before layout.