Part A
ADN2915ACPZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6720 PCS
- Package
- WFQFN-24
- Series
- Horloge Timing - applications spécifiques
Replacement verdict
Compatible functional replacement candidate
The ADN2915ACPZ and ADN2917ACPZ-RL7 are both single-channel clock and data recovery ICs from Analog Devices in the same LFCSP package family, sharing core CDR functionality and supply architecture. The ADN2917ACPZ-RL7 offers a higher supported data rate and extended temperature range, making it a viable functional upgrade candidate, though the differing rate ceiling and operating conditions require design validation before substitution.
Function Type
High match
Data Rate
Validation required
Package Type
High match
Operating Temperature
Validation required
Parts at a glance
Part B
ADN2917ACPZ-RL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 8690 PCS
- Package
- WFQFN-24
- Series
- Horloge Timing - applications spécifiques
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADN2915ACPZ | ADN2917ACPZ-RL7 | Why it matters |
|---|---|---|---|
| Function / Product Type | Clock and data recovery (CDR) IC with integrated limiting amplifier and equalizer | Clock and data recovery (CDR) IC with integrated limiting amplifier and equalizer | Both are CDRs, but the specific variant determines supported data rates and jitter performance, affecting direct substitutability. |
| Data Rate Range | Up to 11.3 Gbps (continuous, multirate) | Up to 11.3 Gbps (continuous, multirate) | The supported data rate must match the target link speed for the part to function in the application. |
| Supply Voltage | 1.8 V core (with 2.5 V/3.3 V options on some rails) | 1.8 V core (with 2.5 V/3.3 V options on some rails) | Supply voltage compatibility determines whether the part can drop into an existing power rail design. |
| Package / Pin Count | 32-lead LFCSP (5 mm x 5 mm) | 32-lead LFCSP (5 mm x 5 mm) | Package and pinout must match for a drop-in replacement on an existing PCB footprint. |
| Jitter (RMS) | Low output jitter (typ. sub-ps RMS, datasheet dependent) | Low output jitter (typ. sub-ps RMS, datasheet dependent) | Jitter performance directly impacts bit error rate and link margin in high-speed serial interfaces. |
| Equalizer / Adaptive EQ | Integrated adaptive equalizer | Integrated adaptive equalizer | Equalization capability determines the amount of channel loss the receiver can compensate for. |
| Operating Temperature Range | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | Temperature range must cover the application environment for reliable operation. |
| Output Interface | CML-compatible differential outputs | CML-compatible differential outputs | Output signaling standard must match the downstream device to avoid level-shifting circuitry. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADN2915ACPZ | ADN2917ACPZ-RL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Obsolete | Obsolete |
| PLL | Yes | Yes |
| Main Purpose | SONET/SDH | SONET/SDH |
| Input | CML | Clock |
| Output | CML | CML |
| Number of Circuits | 1 | 1 |
| Ratio - Input: Output | 1:1 | 1:2 |
| Differential - Input: Output | Yes/Yes | Yes/Yes |
| Frequency - Max | 6.5Mbps | 11.3Gbps |
| Voltage - Supply | 1.14V ~ 3.63V | 1.14V ~ 3.63V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the ADN2915ACPZ and ADN2917ACPZ-RL7?
Both are Analog Devices clock and data recovery (CDR) ICs used in optical and high-speed serial communication receivers. The ADN2915ACPZ is supplied in a 24-lead LFCSP package, while the ADN2917ACPZ-RL7 is supplied in a 32-lead LFCSP package and is delivered in tape-and-reel format.
What data rates do the ADN2915ACPZ and ADN2917ACPZ-RL7 support?
The ADN2915ACPZ supports continuous data rates from 6.5 Mbps to 11.3 Gbps. The ADN2917ACPZ-RL7 supports continuous data rates from 8.5 Gbps to 11.3 Gbps. Designs requiring operation below 8.5 Gbps should use the ADN2915ACPZ.
Are the ADN2915ACPZ and ADN2917ACPZ-RL7 pin-for-pin compatible?
No. The ADN2915ACPZ uses a 24-lead LFCSP package and the ADN2917ACPZ-RL7 uses a 32-lead LFCSP package, so the pin counts, pin assignments, and PCB land patterns differ. They are not drop-in replacements for each other.
What is the difference in power supply requirements between the two devices?
Both devices operate from a 1.8 V core supply with a separate supply for the output drivers. Because the ADN2917ACPZ-RL7 integrates additional functionality in a larger package, the system designer should verify the current consumption and supply decoupling requirements against the respective Analog Devices datasheets for each part.
Which device should be selected for a 10 Gbps optical receiver design?
Both devices cover 10 Gbps operation, so the choice depends on other requirements. The ADN2915ACPZ offers a wider data-rate range extending down to 6.5 Mbps, while the ADN2917ACPZ-RL7 is specified from 8.5 Gbps to 11.3 Gbps and is available in tape-and-reel for high-volume assembly.
What does the -RL7 suffix indicate on the ADN2917ACPZ-RL7?
The -RL7 suffix indicates tape-and-reel packaging from Analog Devices, with 7-inch reels typically used for automated pick-and-place assembly. The ADN2915ACPZ is supplied in tray or tube packaging; the exact packaging should be confirmed from the Analog Devices ordering guide.
Do both devices support the same reference clock and loop filter configurations?
Both are CDR devices that use an external reference clock and external loop filter components, but the required reference clock frequency, loop filter values, and register settings differ between the two parts. Designers must follow the configuration guidance in each device's respective datasheet rather than assuming interchangeability.
Can the ADN2917ACPZ-RL7 replace the ADN2915ACPZ in an existing design?
Not without a PCB redesign. The different package footprint (32-lead versus 24-lead LFCSP), different minimum data rate (8.5 Gbps versus 6.5 Mbps), and potentially different register map and configuration requirements mean the replacement must be validated against the Analog Devices datasheets and the target design before use.