Part A
ADF4113BRUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5428 PCS
- Package
- TSSOP-16
- Series
- Clock-Timing - Clock Generators, PLLs, Frequency Synthesizers
Replacement verdict
Compatible functional replacement candidate
The ADF4113BRUZ and ADF4112BRU are both single-channel integer-N PLL frequency synthesizers from Analog Devices in the same 16-lead TSSOP package, sharing an identical pinout, supply range, and 3-wire serial interface, so the ADF4113BRUZ can serve as a functional replacement candidate for the ADF4112BRU. The primary distinction is the maximum RF operating frequency, which is higher on the ADF4113BRUZ, so the replacement is valid provided the target design does not depend on the ADF4112BRU's lower frequency ceiling or its specific phase-noise and current-consumption profile. Designers should validate the RF front-end, loop filter, and power budget against the ADF4113BRUZ datasheet before committing to the substitution.
Package Type
High match
Pin Configuration
High match
Supply Voltage Range
High match
Maximum RF Operating Frequency
Validation required
Parts at a glance
Part B
ADF4112BRU
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4577 PCS
- Package
- TSSOP-16
- Series
- Clock-Timing - Clock Generators, PLLs, Frequency Synthesizers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADF4113BRUZ | ADF4112BRU | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 4 GHz | 3 GHz | Determines the highest frequency the PLL synthesizer can operate at; the ADF4113 supports higher-frequency VCOs and applications. |
| Maximum PFD Frequency | 55 MHz | 55 MHz | Phase frequency detector rate affects phase noise and loop bandwidth; both parts share the same PFD limit. |
| Normalized Phase Noise Floor | -219 dBc/Hz | -212 dBc/Hz | Lower phase noise floor yields cleaner synthesized signals; the ADF4113 offers better noise performance for sensitive RF designs. |
| Normalized 1/f Noise | -116 dBc/Hz | -110 dBc/Hz | 1/f noise impacts close-in phase noise; the ADF4113 provides lower flicker noise for tighter loop performance. |
| RF Input Sensitivity Range | -8 dBm to +5 dBm (approx.) | -8 dBm to +5 dBm (approx.) | Defines the usable input power window from the VCO; matching ranges ease drop-in substitution. |
| Supply Voltage | 2.7 V to 3.3 V | 2.7 V to 3.3 V | Operating voltage must match the system rail; identical ranges allow direct replacement without supply changes. |
| Supply Current | 7.5 mA typ | 7.5 mA typ | Power consumption affects thermal and battery budgets; equal current draw simplifies substitution. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Footprint and pinout compatibility are essential for board-level interchangeability; both use the same package. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment; identical ratings support equivalent use. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4113BRUZ | 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 | 4GHz | 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 ADF4113BRUZ and the ADF4112BRU?
The ADF4113BRUZ and ADF4112BRU are both single-channel integer-N PLL frequency synthesizers from Analog Devices, but they differ in maximum RF input frequency and package/ordering status. The ADF4113BRUZ supports RF operation up to 4.0 GHz, while the ADF4112BRU supports up to 3.0 GHz. The ADF4113BRUZ is supplied in a 16-lead TSSOP (RU-16) and is RoHS-compliant (Z suffix), whereas the ADF4112BRU is the non-RoHS version of the same 16-lead TSSOP package.
Are the ADF4113BRUZ and ADF4112BRU pin-compatible?
Yes. Both devices are offered in the same 16-lead TSSOP (RU-16) package and share the same pinout, including the RF input, reference input, charge pump output, and serial interface pins. This allows the ADF4113BRUZ to be used as a higher-frequency drop-in alternative to the ADF4112BRU in existing 16-lead TSSOP layouts, provided the system RF requirements are within the ADF4113BRUZ's 4.0 GHz range.
What is the maximum RF input frequency of each device?
The ADF4113BRUZ has a maximum RF input frequency of 4.0 GHz, while the ADF4112BRU has a maximum RF input frequency of 3.0 GHz. Both specifications are stated in the respective Analog Devices datasheets for the ADF411x family.
Do both parts share the same integer-N architecture and programmable modulus?
Yes. Both the ADF4113BRUZ and ADF4112BRU use an integer-N architecture with a programmable dual-modulus prescaler (8/9, 16/17, 32/33, or 64/65), a programmable reference divider, and a programmable charge pump. They also share the same 3-wire serial interface and on-chip registers, so the programming model is identical between the two devices.
What is the difference in the RoHS/ordering suffix between ADF4113BRUZ and ADF4112BRU?
The "Z" suffix in ADF4113BRUZ indicates a RoHS-compliant, lead-free package per Analog Devices ordering conventions. The ADF4112BRU does not carry the Z suffix and is the non-RoHS version. Designers requiring RoHS compliance should select the ADF4113BRUZ or the corresponding RoHS-suffixed ADF4112 variant.
Can the ADF4113BRUZ replace the ADF4112BRU in an existing design?
In most cases yes, because both devices are pin-compatible 16-lead TSSOP integer-N synthesizers with the same register map and serial interface. The primary consideration is that the ADF4113BRUZ extends the RF input range to 4.0 GHz, so it can cover all frequencies supported by the ADF4112BRU (up to 3.0 GHz) while offering additional headroom. The designer should verify charge pump current settings, loop filter values, and phase noise performance against the target application using the respective datasheets.
Do both devices operate from the same supply voltage?
Yes. Both the ADF4113BRUZ and ADF4112BRU operate from a nominal 3.0 V to 3.6 V supply for the digital and charge pump sections, with a separate extended supply range for the RF section as specified in the Analog Devices ADF411x datasheets. The shared supply requirements simplify substitution between the two parts.