Part A
ADF4001BRUZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6578 ПКС
- Package
- TSSOP-16
- Series
- Часовое время - Часовые генераторы, PLL, частотные синтезаторы
Replacement verdict
Compatible functional replacement candidate
The ADF4001BRUZ and ADF4002SRU-EP are both single-channel integer-N PLL frequency synthesizers sharing the same 16-lead TSSOP footprint and 3 V to 3.6 V supply range, making them functionally interchangeable for many synthesizer designs. However, the ADF4002SRU-EP is an enhanced-product variant with an extended operating temperature range and tighter parametric guarantees, so the designer must validate loop filter component values and phase noise performance against the target specification before substituting one for the other in a qualified design.
Function and Channel Count
High match
Package and Pinout
High match
Supply Voltage Range
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADF4002SRU-EP
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3599 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 | ADF4001BRUZ | ADF4002SRU-EP | Why it matters |
|---|---|---|---|
| Maximum Operating Frequency | 200 MHz | 400 MHz | Determines the highest input reference frequency the PLL can accept; a higher limit allows faster loop bandwidth and finer resolution trade-offs. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 3.3 V | Defines the compatible power rail; the narrower range of the ADF4002SRU-EP restricts use to 3.3 V-class systems. |
| Normalized Phase Noise Floor | -211 dBc/Hz | -222 dBc/Hz | Lower phase noise floor yields cleaner synthesized signals, which is critical for RF and communications applications. |
| Maximum RF Input Frequency (PLL) | 200 MHz | 400 MHz | Sets the upper bound for the prescaler/PLL input, directly affecting the achievable output frequency range. |
| Operating Temperature Range | -40 °C to +85 °C | -55 °C to +125 °C | The extended temperature range of the ADF4002SRU-EP enables use in harsh environments such as aerospace and defense systems. |
| Package / Pin Count | 16-Lead TSSOP | 16-Lead TSSOP | Same package and pin count support drop-in board compatibility, though electrical differences still require verification. |
| Charge Pump Current (Programmable) | 0.625 mA to 5 mA | 0.625 mA to 5 mA | Charge pump current sets loop gain and affects lock time and phase noise; matching ranges simplify loop filter redesign. |
| Reference Input Frequency | Up to 200 MHz | Up to 400 MHz | Higher reference input capability enables higher phase detector frequency, improving phase noise and lock time. |
| Supply Current (Typical) | 4.5 mA | 5.5 mA | Affects power budget and thermal design; the ADF4002SRU-EP draws slightly more current for its higher performance. |
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 | ADF4001BRUZ | ADF4002SRU-EP |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Clock Generator (RF) | Clock/Frequency Synthesizer (RF), Phase Detector |
| PLL | Yes | Yes with Bypass |
| 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 | 400MHz |
| Divider / Multiplier | Yes/No | Yes/No |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 3.3V |
| Operating Temperature | -40°C ~ 85°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADF4001BRUZ and ADF4002SRU-EP?
The ADF4001BRUZ is a standard-grade PLL frequency synthesizer in a 16-lead TSSOP package, while the ADF4002SRU-EP is an enhanced-product (EP) variant of the ADF4002 in a 16-lead TSSOP, specified for extended temperature operation and screened for enhanced reliability. The ADF4002 family supports a higher maximum RF input frequency (up to 400 MHz) than the ADF4001 (up to 200 MHz), and the two devices differ in their charge-pump and reference-input specifications per their respective datasheets.
Are the ADF4001BRUZ and ADF4002SRU-EP pin-compatible?
Both devices are offered in a 16-lead TSSOP package, but pin compatibility must be confirmed against the pin configuration and function descriptions in the respective Analog Devices datasheets. Do not assume direct pin-for-pin substitution without verifying each pin function, supply, and interface assignment.
What is the maximum RF input frequency for each device?
Per Analog Devices datasheets, the ADF4001 RF input operates up to 200 MHz, while the ADF4002 RF input operates up to 400 MHz. Designs requiring RF input above 200 MHz cannot use the ADF4001BRUZ within its specified range.
What does the "EP" suffix on the ADF4002SRU-EP indicate?
The "EP" designation denotes an enhanced product variant from Analog Devices, which is specified and screened for extended temperature range and enhanced reliability requirements. Designers should consult the ADF4002SRU-EP datasheet for the exact operating temperature range and screening conditions rather than assuming equivalence to the standard ADF4002 grade.
Can the ADF4001BRUZ be used as a drop-in replacement for the ADF4002SRU-EP?
No. The devices differ in maximum RF input frequency, charge-pump specifications, and grade/screening level. A drop-in replacement requires verification of all electrical parameters, pin functions, and environmental ratings against the target design requirements using the official Analog Devices datasheets.
What supply voltage range do these devices require?
Both the ADF4001 and ADF4002 families are specified for a 3 V nominal supply with an operating range of 2.7 V to 3.3 V per Analog Devices datasheets. Confirm the exact limits in the respective datasheet before finalizing the power supply design.
Which device should be selected for extended-temperature applications?
The ADF4002SRU-EP is the enhanced-product variant screened for extended temperature operation, making it the appropriate choice when the application requires operation beyond the standard commercial temperature range. Verify the exact specified temperature range in the ADF4002SRU-EP datasheet against the application's environmental requirements.