Part A
ADN2816ACPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5594 PCS
- Package
- LFCSP-32
- Series
- Clock-Timing - Application Specific
Replacement verdict
Not a drop-in replacement
The ADN2816ACPZ and ADN2811ACP-CML are not drop-in replacements for one another. Although both are Analog Devices clock and data recovery ICs sharing a 5 mm × 5 mm LFCSP footprint, they differ in data rate range, output interface, and supply voltage, so the ADN2811ACP-CML cannot be substituted directly for the ADN2816ACPZ without design validation.
Different data rate range
Different output interface
Different supply voltage
Different jitter specification
Parts at a glance
Part B
ADN2811ACP-CML
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9484 PCS
- Package
- WFQFN-48
- Series
- Clock-Timing - Application Specific
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADN2816ACPZ | ADN2811ACP-CML | Why it matters |
|---|---|---|---|
| Data Rate Range | 10 Mbps to 675 Mbps | Up to 2.7 Gbps | Defines the maximum serial data throughput the CDR can lock to; a higher ceiling enables faster optical links. |
| Supply Voltage | 3.3 V | 3.3 V | Both operate from the same 3.3 V rail, so power-supply design is compatible between the two parts. |
| Package / Pin Count | 32-Lead LFCSP | 32-Lead LFCSP | Identical package and pin count allow a common PCB footprint, easing board-level substitution. |
| Output Interface | CML-compatible differential outputs | CML differential outputs | Matching output logic levels ensure interoperability with downstream SerDes and optical modules. |
| Jitter (RMS) | Low output jitter (typ. ~5 ps RMS) | Low output jitter (typ. ~5 ps RMS) | Low jitter preserves signal integrity and bit-error-rate margins in high-speed serial links. |
| Input Sensitivity | Differential input sensitivity specified for low-amplitude signals | Differential input sensitivity specified for low-amplitude signals | Determines the minimum signal amplitude the CDR can reliably recover, affecting link reach and margin. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range supports deployment in harsh environments and telecom equipment. |
| Function | Clock and data recovery (CDR) with integrated limiting amplifier | Clock and data recovery (CDR) with integrated limiting amplifier | Same core function means both can serve the same role in a receiver chain, subject to data-rate limits. |
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 | ADN2816ACPZ | ADN2811ACP-CML |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| PLL | Yes | Yes |
| Main Purpose | SONET/SDH | SONET/SDH, STM |
| Input | CML | CML |
| Output | LVDS | CML |
| Ratio - Input: Output | 1:2 | 1:2 |
| Differential - Input: Output | Yes/Yes | Yes/Yes |
| Frequency - Max | 675MHz | 2.66GHz |
| Voltage - Supply | 3V ~ 3.6V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Circuits | 1 | - |
Frequently asked questions
What are the ADN2816ACPZ and ADN2811ACP-CML?
The ADN2816ACPZ is a continuous-rate clock and data recovery (CDR) IC from Analog Devices that operates from 10 Mbps to 675 Mbps and is supplied in a 32-lead LFCSP package. The ADN2811ACP-CML is a CDR IC from Analog Devices that operates from 10 Mbps to 2.7 Gbps and is supplied in a 48-lead LFCSP package.
What is the maximum data rate supported by each device?
The ADN2816ACPZ supports data rates from 10 Mbps up to 675 Mbps. The ADN2811ACP-CML supports data rates from 10 Mbps up to 2.7 Gbps, giving it a significantly higher upper data rate limit.
Do the ADN2816ACPZ and ADN2811ACP-CML use the same package and pinout?
No. The ADN2816ACPZ is packaged in a 32-lead LFCSP, while the ADN2811ACP-CML is packaged in a 48-lead LFCSP. The different package sizes and pin counts mean the PCB land patterns and pin assignments are not interchangeable.
Can the ADN2816ACPZ be used as a direct drop-in replacement for the ADN2811ACP-CML?
No. The two devices differ in package (32-lead LFCSP versus 48-lead LFCSP), pinout, and maximum data rate (675 Mbps versus 2.7 Gbps). A direct drop-in replacement is not possible; any substitution requires redesign and validation against the manufacturer datasheets.
Which device should be selected for a 2.5 Gbps application?
The ADN2811ACP-CML should be selected, because its specified operating range extends to 2.7 Gbps, whereas the ADN2816ACPZ is limited to a maximum of 675 Mbps and cannot support 2.5 Gbps operation.
Are both devices continuous-rate CDR ICs?
Yes. Both the ADN2816ACPZ and the ADN2811ACP-CML are continuous-rate clock and data recovery ICs that operate from a minimum data rate of 10 Mbps, with upper limits of 675 Mbps and 2.7 Gbps respectively.
What should be verified before considering either part for a design?
Verify the required data rate against each device's specified range (10 Mbps to 675 Mbps for the ADN2816ACPZ; 10 Mbps to 2.7 Gbps for the ADN2811ACP-CML), confirm the package and pinout against the PCB layout (32-lead versus 48-lead LFCSP), and validate all electrical and jitter specifications against the respective Analog Devices datasheets.