Part A
ADF4107BRUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7234 個数
- 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 ADF4107BRUZ and ADF4116BRU are both integer-N PLL frequency synthesizers from Analog Devices in the same 16-lead TSSOP package, sharing a compatible 3-wire serial interface and similar supply architecture. However, they differ in maximum operating frequency, programmable modulus range, and current consumption, so the ADF4116BRU can serve as a functional substitute only where the lower frequency ceiling and reduced fractional modulus resolution are acceptable. Designers should validate loop filter scaling and RF input matching before committing to the swap.
Maximum Operating Frequency
Validation required
Programmable Modulus Range
Validation required
Package Type
High match
Supply Current
Validation required
Parts at a glance
Part B
ADF4116BRU
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6377 個数
- 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 | ADF4107BRUZ | ADF4116BRU | Why it matters |
|---|---|---|---|
| Maximum RF Input Frequency | 7 GHz | 4 GHz | Determines the highest frequency the PLL can synthesize; the ADF4107 supports higher-frequency VCOs and applications. |
| Number of Programmable Counters / Prescaler | Dual-modulus prescaler 8/9, 16/17, 32/33, 64/65 | Dual-modulus prescaler 8/9, 16/17, 32/33, 64/65 | Prescaler options affect achievable division ratios and loop frequency resolution for a given reference. |
| Supply Voltage Range | 2.7 V to 3.3 V | 2.7 V to 3.3 V | Both operate from the same low-voltage supply, easing direct board-level substitution in 3 V systems. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Identical package and pin count allow drop-in replacement without PCB layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching industrial temperature ranges ensure equivalent environmental robustness. |
| Charge Pump Current (Programmable) | Programmable, up to 5 mA | Programmable, up to 5 mA | Charge pump current sets loop bandwidth and phase noise performance; equivalent ranges support similar loop filter design. |
| Reference Input Frequency | Up to 250 MHz | Up to 250 MHz | Higher reference input allows finer frequency resolution and lower phase noise; both share the same limit. |
| Interface | 3-wire serial (SPI-compatible) | 3-wire serial (SPI-compatible) | Same serial programming interface means firmware and microcontroller connections remain compatible. |
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 | ADF4107BRUZ | ADF4116BRU |
|---|---|---|
| Part Status | Active | Obsolete |
| Digi Key Programmable | Not Verified | 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 |
| Base Product Number | ADF4107 | ADF4116 |
| Packaging | Tube | - |
Frequently asked questions
What are the key differences between the ADF4107BRUZ and ADF4116BRU?
The ADF4107BRUZ is a 7 GHz fractional-N PLL frequency synthesizer with an integrated VCO, housed in a 20-lead TSSOP package. The ADF4116BRU is a 1.2 GHz integer-N PLL frequency synthesizer without an integrated VCO, housed in a 16-lead TSSOP package. The ADF4107BRUZ supports fractional-N operation and higher RF input frequency, while the ADF4116BRU is limited to integer-N operation and lower frequency range.
Can the ADF4107BRUZ directly replace the ADF4116BRU in an existing design?
No, a direct replacement is not possible. The two devices differ in package pin count (20-lead vs 16-lead TSSOP), pin functions, control interface register maps, and functional architecture (fractional-N with integrated VCO vs integer-N without VCO). The PCB layout, external loop filter, and VCO circuitry would require redesign.
What is the maximum RF input frequency for each device?
The ADF4107BRUZ supports RF input frequencies up to 7 GHz. The ADF4116BRU supports RF input frequencies up to 1.2 GHz. These values are specified in the respective Analog Devices datasheets.
Do both devices support fractional-N synthesis?
No. The ADF4107BRUZ is a fractional-N frequency synthesizer, allowing finer frequency resolution and lower phase noise for a given comparison frequency. The ADF4116BRU is an integer-N frequency synthesizer, where the output frequency is an integer multiple of the phase detector comparison frequency.
What are the package and pin count differences between the ADF4107BRUZ and ADF4116BRU?
The ADF4107BRUZ is supplied in a 20-lead TSSOP package. The ADF4116BRU is supplied in a 16-lead TSSOP package. The different pin counts and pin assignments mean the two devices are not footprint-compatible.
Does the ADF4107BRUZ include an integrated VCO while the ADF4116BRU does not?
Yes. The ADF4107BRUZ integrates a voltage-controlled oscillator (VCO) on-chip, which simplifies the RF design and reduces external component count. The ADF4116BRU does not include an integrated VCO and requires an external VCO in the loop.
What supply voltage range do these devices require?
Both the ADF4107BRUZ and ADF4116BRU operate from a nominal 3.0 V to 3.6 V supply, consistent with the Analog Devices ADF4107 and ADF4116 datasheet specifications. Designers should verify the exact limits in the latest revision of each datasheet before finalizing the power supply.
Which device is better suited for higher-frequency applications such as microwave point-to-point radios?
The ADF4107BRUZ is better suited for higher-frequency applications because its RF input operates up to 7 GHz and it includes an integrated VCO, making it appropriate for microwave point-to-point radio and instrumentation designs. The ADF4116BRU, limited to 1.2 GHz, is intended for lower-frequency wireless and general-purpose synthesis applications.