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 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 pinout. They differ primarily in maximum RF operating frequency and programmable modulus range, so the ADF4113BRU can serve as a functional substitute for the ADF4110BRU where the higher frequency capability and extended modulus are acceptable, but the substitution should be validated against the target loop bandwidth, phase noise, and reference frequency requirements of the specific design.
Package and Pinout
High match
Supply Voltage Range
High match
Maximum RF Frequency
Validation required
Programmable Modulus Range
Validation required
Parts at a glance
Part B
ADF4113BRU
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5383 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 | ADF4113BRU | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 1.0 GHz | 4.0 GHz | Determines the highest frequency the PLL synthesizer can lock to; the ADF4113 supports much higher frequency operation, so it is not a drop-in replacement for higher-band designs. |
| Maximum PFD Frequency | 55 MHz | 104 MHz | The phase frequency detector rate affects phase noise and loop bandwidth; a higher PFD allows lower division ratios and better noise performance. |
| Normalized Phase Noise Floor | -211 dBc/Hz | -219 dBc/Hz | Lower phase noise floor yields cleaner synthesized signals; the ADF4113 offers significantly better noise performance for demanding RF applications. |
| Normalized 1/f Noise (PN1/f) | -263 dBc/Hz | -266 dBc/Hz | Flicker noise influences close-in phase noise; a lower value improves spectral purity near the carrier. |
| RF Input Sensitivity Range | -15 dBm to 0 dBm | -10 dBm to 0 dBm | Defines the input power window the prescaler can reliably divide; differing sensitivity affects the required drive level from the VCO buffer. |
| Maximum Prescaler Input Frequency | 1.0 GHz | 4.0 GHz | The prescaler sets the upper usable RF frequency; the ADF4113's higher-rated prescaler enables operation in higher frequency bands. |
| Supply Current (Typical) | 4.5 mA | 7.5 mA | Affects power budget and thermal design; the ADF4113 draws more current to support its higher frequency and lower noise performance. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Package and pinout compatibility is essential for board-level substitution; both share the same 16-lead TSSOP footprint. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both parts operate over the same supply range, allowing use in 3 V and 5 V systems without supply redesign. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings mean both parts suit the same environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADF4110BRUZ | 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 ADF4110BRUZ and the ADF4113BRU?
Both are single PLL frequency synthesizers from Analog Devices in a 16-lead TSSOP package, but they differ in maximum RF input frequency and prescaler. The ADF4110BRUZ operates up to 550 MHz with an 8/9 prescaler, while the ADF4113BRU operates up to 4.0 GHz with a 4/5 prescaler. The ADF4113BRU is intended for higher-frequency applications, whereas the ADF4110BRUZ targets lower-frequency designs.
Are the ADF4110BRUZ and ADF4113BRU pin-compatible?
Yes. Both devices are offered in the same 16-lead TSSOP (RU-16) package and share the same pinout, so they are pin-compatible. However, pin compatibility does not guarantee functional interchangeability; the RF frequency range and prescaler differences must be validated for the target design.
Can the ADF4110BRUZ be used as a drop-in replacement for the ADF4113BRU?
Not directly in all cases. Although they are pin-compatible, the ADF4110BRUZ has a maximum RF input frequency of 550 MHz and an 8/9 prescaler, while the ADF4113BRU supports up to 4.0 GHz with a 4/5 prescaler. A replacement is only valid if the system's RF frequency and loop parameters fall within the ADF4110BRUZ specifications and the register settings are updated accordingly.
What is the maximum RF input frequency of each device?
The ADF4110BRUZ has a maximum RF input frequency of 550 MHz. The ADF4113BRU has a maximum RF input frequency of 4.0 GHz. These values are specified in the respective Analog Devices datasheets and determine the applicable frequency bands for each synthesizer.
Do the ADF4110BRUZ and ADF4113BRU use the same power supply and logic interface?
Yes. Both devices operate from a 2.7 V to 3.3 V supply and use a 3-wire serial interface (CLK, DATA, LE) for programming. The digital interface levels and register map structure are consistent across the ADF411x family, though register values must be recalculated for the specific prescaler and frequency plan of each part.
What prescaler does each device use, and why does it matter?
The ADF4110BRUZ uses an 8/9 prescaler, while the ADF4113BRU uses a 4/5 prescaler. The prescaler affects the achievable frequency range and the PLL loop division ratios; the 4/5 prescaler in the ADF4113BRU supports higher RF input frequencies, while the 8/9 prescaler in the ADF4110BRUZ is suited to lower-frequency operation.
Are the ADF4110BRUZ and ADF4113BRU available in the same package and temperature range?
Both are supplied in a 16-lead TSSOP package and are specified for the industrial temperature range of -40°C to +85°C. Designers should confirm the exact ordering code and package marking against the Analog Devices datasheet for the specific grade required.