Part A
ADF4110BRUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2777 個数
- Package
- TSSOP-16
- Series
- クロックタイミング - クロックジェネレータ、PLL、周波数シンセサイザ
Replacement verdict
Compatible functional replacement candidate
The ADF4110BRUZ and ADF4112BRU 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 pinout. They differ primarily in maximum RF operating frequency and programmable modulus range, so the ADF4112BRU can serve as a functional replacement for the ADF4110BRU where the higher frequency capability is acceptable, but the substitution should be validated against the target loop bandwidth, phase noise, and reference frequency requirements of the specific design.
Package Type
High match
Supply Voltage Range
High match
Maximum RF Frequency
Validation required
Programmable Modulus Range
Validation required
Parts at a glance
Part B
ADF4112BRU
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4577 個数
- Package
- TSSOP-16
- Series
- クロックタイミング - クロックジェネレータ、PLL、周波数シンセサイザ
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 | ADF4112BRU | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 1.0 GHz | 3.0 GHz | Determines the highest frequency the PLL synthesizer can operate at; the ADF4112 supports much higher frequencies, so it is not a drop-in replacement in high-frequency designs. |
| Maximum Prescaler Input Frequency | 1.0 GHz | 3.0 GHz | The prescaler limits the maximum VCO frequency that can be divided; a higher prescaler frequency enables operation with higher-frequency VCOs. |
| Prescaler Values | 8/9, 16/17, 32/33, 64/65 | 8/9, 16/17, 32/33, 64/65 | Prescaler options affect the achievable division ratios and phase noise; identical options mean similar loop configurability. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating voltage window; matching ranges allow the same power rail to be used for either device. |
| Package / Pin Count | 16-Lead TSSOP | 16-Lead TSSOP | Package and pinout compatibility is essential for physical board-level substitution without layout changes. |
| Charge Pump Current (Programmable) | 0.625 mA to 5 mA | 0.625 mA to 5 mA | Charge pump current sets loop bandwidth and phase noise performance; matching ranges allow similar loop filter design. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Temperature range determines suitability for industrial vs. commercial environments; identical ranges mean equivalent environmental ratings. |
| RF Input Sensitivity | -10 dBm to +3 dBm (typical) | -10 dBm to +3 dBm (typical) | Input sensitivity affects the required drive level from the VCO; similar sensitivity means comparable interface requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4110BRUZ | ADF4112BRU |
|---|---|---|
| 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 ADF4112BRU?
The ADF4110BRUZ and ADF4112BRU are both single fractional-N PLL frequency synthesizers from Analog Devices, but they differ in maximum RF input frequency and package/ordering code. The ADF4110BRUZ supports RF input up to 550 MHz, while the ADF4112BRU supports RF input up to 3.0 GHz. The ADF4110BRUZ is supplied in a 16-lead TSSOP (RU suffix) in RoHS-compliant tube packaging (Z suffix), whereas the ADF4112BRU is supplied in a 16-lead TSSOP in non-RoHS tube packaging.
Are the ADF4110BRUZ and ADF4112BRU pin-compatible?
Yes. Both devices are offered in the same 16-lead TSSOP package and share the same pinout, which includes the RF input, reference input, charge pump output, and serial interface pins. This allows board-level interchangeability when the frequency range and RoHS requirements are satisfied.
What is the maximum RF input frequency for each device?
The ADF4110BRUZ has a maximum RF input frequency of 550 MHz. The ADF4112BRU has a maximum RF input frequency of 3.0 GHz. The correct device must be selected based on the target local oscillator or RF frequency of the application.
Do both parts support the same serial interface and register set?
Yes. Both the ADF4110BRUZ and ADF4112BRU use a three-wire serial interface (CLK, DATA, LE) and share the same register architecture, including the R counter, N counter, and control registers. Firmware written for one device is generally portable to the other, provided the frequency range is respected.
What is the difference in RoHS compliance between the two ordering codes?
The ADF4110BRUZ carries the "Z" suffix, indicating RoHS-compliant packaging. The ADF4112BRU does not carry the "Z" suffix and is therefore the non-RoHS version. Designs requiring RoHS compliance should use the Z-suffixed variant or confirm the RoHS status of the specific ADF4112 ordering code with the manufacturer.
Can the ADF4110BRUZ be used as a drop-in replacement for the ADF4112BRU?
Only if the application's RF frequency does not exceed 550 MHz. Because the ADF4110BRUZ has a lower maximum RF input frequency (550 MHz) than the ADF4112BRU (3.0 GHz), it cannot replace the ADF4112BRU in designs operating above 550 MHz. Pinout and register compatibility otherwise permit substitution within the ADF4110BRUZ frequency range.
What charge pump output current do these synthesizers provide?
Both the ADF4110BRUZ and ADF4112BRU feature a programmable charge pump with selectable output currents, allowing loop filter design flexibility. The specific programmable current settings should be confirmed against the respective Analog Devices datasheets for the exact device variant.
What supply voltage range do the ADF4110BRUZ and ADF4112BRU require?
Both devices operate from a single supply in the 2.7 V to 5.5 V range, making them suitable for 3 V and 5 V systems. Designers should verify the exact recommended operating conditions in the Analog Devices datasheet for the selected part.