Part A
ADF4001BRU
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1814 Stückzahl
- Package
- TSSOP-16
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Replacement verdict
Compatible functional replacement candidate
The ADF4001BRUZ and ADF4001BRU are functionally equivalent phase-locked loop frequency synthesizers from Analog Devices, sharing the same core architecture, supply range, and TSSOP-16 package. The only meaningful distinction is the RoHS compliance status of the package finish, making the ADF4001BRUZ a suitable drop-in candidate for the ADF4001BRU in most designs, provided the designer confirms the lead-free termination is acceptable for the target assembly process.
Function and Architecture
High match
Package Type
High match
Supply Voltage Range
High match
RoHS Compliance
Validation required
Parts at a glance
Part B
ADF4001BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6578 Stückzahl
- Package
- TSSOP-16
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADF4001BRUZ | ADF4001BRU | Why it matters |
|---|---|---|---|
| Package / Mounting | 16-TSSOP (0.173", 4.40mm width), surface mount | 16-TSSOP (0.173", 4.40mm width), surface mount | Both use the same TSSOP footprint, so board-level interchangeability is preserved. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free (Z suffix denotes Pb-free) | Non-RoHS, contains lead (no Z suffix) | The Z suffix indicates lead-free/RoHS compliance; this affects regulatory compliance and solder process compatibility. |
| Function | PLL frequency synthesizer (integer-N) | PLL frequency synthesizer (integer-N) | Identical core function ensures the parts are functionally substitutable in synthesizer designs. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply range allows the same power rail design to be used for either part. |
| Maximum RF Input Frequency | 200 MHz | 200 MHz | Same maximum input frequency means both support the same RF front-end requirements. |
| Reference Input Frequency | Up to 100 MHz (prescaler input) | Up to 100 MHz (prescaler input) | Identical reference input capability ensures the same loop and reference design works for both. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature rating means both suit the same environmental conditions. |
| Number of Pins | 16 | 16 | Identical pin count and pinout support drop-in replacement on the same PCB. |
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 | ADF4001BRU | ADF4001BRUZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Type | Clock Generator (RF) | Clock Generator (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 | 200MHz | 200MHz |
| 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 is the difference between ADF4001BRUZ and ADF4001BRU?
The ADF4001BRUZ and ADF4001BRU are functionally identical PLL frequency synthesizer ICs from Analog Devices. The only difference is the suffix "Z," which indicates RoHS-compliant lead-free packaging for the ADF4001BRUZ, while the ADF4001BRU is the non-RoHS version. Both are supplied in a 16-lead TSSOP package and share the same electrical specifications.
Are the ADF4001BRUZ and ADF4001BRU pin-compatible?
Yes. Both devices use the same 16-lead TSSOP (RU-16) package with identical pin assignments and footprint. They are drop-in compatible from a PCB layout and pin function perspective.
Can ADF4001BRUZ be used as a direct replacement for ADF4001BRU in an existing design?
Yes, from an electrical and mechanical standpoint the ADF4001BRUZ is a direct replacement for the ADF4001BRU. The primary consideration is RoHS compliance: the ADF4001BRUZ is lead-free and RoHS-compliant, so soldering process profiles and any regulatory requirements should be reviewed accordingly.
What are the key specifications shared by the ADF4001BRUZ and ADF4001BRU?
Both devices are integer-N PLL frequency synthesizers operating with a maximum RF input frequency of 200 MHz, a maximum reference input frequency of 104 MHz, and a supply voltage range of 2.7 V to 5.5 V. They feature a programmable dual-modulus prescaler (8/9, 16/17, 32/33, 64/65), a 14-bit reference counter, and a 13-bit N counter, and are controlled via a 3-wire serial interface.
Does the "Z" suffix affect the electrical performance of the ADF4001?
No. The "Z" suffix in ADF4001BRUZ denotes RoHS-compliant, lead-free packaging and does not change the electrical characteristics, functional behavior, or parametric performance of the device compared with the ADF4001BRU.
Which part should be selected for a new RoHS-compliant design?
The ADF4001BRUZ should be selected for new designs requiring RoHS compliance, as it is the lead-free, RoHS-compliant variant. The ADF4001BRU (non-Z) is the non-RoHS version and is generally not recommended for new designs subject to RoHS directives.
Are the ADF4001BRUZ and ADF4001BRU available in the same package type?
Yes. Both are offered in the 16-lead TSSOP package (Analog Devices package designation RU-16). Package dimensions and lead pitch are identical; only the lead finish and RoHS status differ.