Part A
ADN2816ACPZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5594 ПКС
- Package
- LFCSP-32
- Series
- Часовое время - специфическое приложение
Replacement verdict
Compatible functional replacement candidate
The ADN2816ACPZ and ADN2811ACPZ-CML are both clock and data recovery ICs from the same Analog Devices ADN28xx family, sharing a 5 mm × 5 mm 32-lead LFCSP package and a 3.3 V supply rail, so they are functionally related candidates. However, they are not identical: the ADN2816ACPZ supports continuous data rates from 10 Mbps to 675 Mbps with CML outputs, while the ADN2811ACPZ-CML is a fixed-rate 2.488 Gbps (OC-48/STM-16) device with CML outputs. Designers must confirm data rate, jitter budget, and configuration pin strapping before substituting one for the other in a given application.
Data Rate Range
Validation required
Output Type
High match
Package Type
High match
Supply Voltage
Validation required
Parts at a glance
Part B
ADN2811ACPZ-CML
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4704 ПКС
- Package
- WFQFN-48
- Series
- Часовое время - специфическое приложение
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 | ADN2811ACPZ-CML | Why it matters |
|---|---|---|---|
| Data Rate Range | 10 Mbps to 675 Mbps | Up to 2.7 Gbps | The maximum supported data rate determines whether the part can be used in the target link speed; the ADN2811 supports much higher rates than the ADN2816. |
| Output Interface | CML (current-mode logic) | CML (current-mode logic) | Output signaling must match the downstream receiver's input type; both use CML, but the ADN2811 variant is explicitly specified for CML output configuration. |
| Supply Voltage | 3.3 V | 3.3 V | Supply voltage compatibility ensures the part can be powered from the existing rail without additional regulation. |
| Package | 32-lead LFCSP (5 mm x 5 mm) | 32-lead LFCSP (5 mm x 5 mm) | Package footprint and pinout must match for board-level drop-in substitution; both share the same LFCSP package. |
| Jitter Tolerance / Performance | Optimized for low data rates (SONET/SDH, Gigabit Ethernet) | Optimized for high-speed links up to 2.7 Gbps | Jitter tolerance and jitter generation differ by design target; using a part outside its optimized rate range can degrade link margin. |
| Input Sensitivity | Differential input sensitivity specified for low-rate operation | Differential input sensitivity specified for high-rate operation | Input sensitivity affects the minimum signal amplitude the receiver can reliably recover, which is critical for optical module interoperability. |
| Function | Clock and data recovery (CDR) with limiting amplifier | Clock and data recovery (CDR) with limiting amplifier | Both are CDR devices, so functional substitutability depends mainly on rate and interface compatibility rather than core function. |
| Operating Temperature Range | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | Temperature range must cover the application environment; both are rated for industrial temperature operation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADN2816ACPZ | ADN2811ACPZ-CML |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| PLL | Yes | Yes |
| Main Purpose | SONET/SDH | SONET/SDH, STM |
| Input | CML | CML |
| Output | LVDS | CML |
| Number of Circuits | 1 | 1 |
| 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 |
Frequently asked questions
What are the ADN2816ACPZ and ADN2811ACPZ-CML?
The ADN2816ACPZ and ADN2811ACPZ-CML are Analog Devices clock and data recovery (CDR) ICs intended for use in fiber-optic receiver modules and similar high-speed serial links. Both are offered in a 32-lead LFCSP package. The ADN2816 is specified for continuous data rates from 10 Mbps to 675 Mbps, while the ADN2811 is specified for continuous data rates from 10 Mbps to 2.7 Gbps.
What is the key difference in data rate between the ADN2816ACPZ and ADN2811ACPZ-CML?
The ADN2816ACPZ supports continuous data rates from 10 Mbps to 675 Mbps. The ADN2811ACPZ-CML supports continuous data rates from 10 Mbps to 2.7 Gbps. The ADN2811 therefore covers higher-speed links, while the ADN2816 is limited to lower-rate applications.
Do the ADN2816ACPZ and ADN2811ACPZ-CML use the same package and pinout?
Both devices are supplied in a 32-lead LFCSP package. However, the ADN2811ACPZ-CML is a CML-output variant, and its output interface and related pin functions differ from the ADN2816ACPZ. Designers must verify the pin functions and output termination requirements against the respective Analog Devices datasheets before considering any layout reuse.
What output interface does the ADN2811ACPZ-CML provide compared with the ADN2816ACPZ?
The ADN2811ACPZ-CML provides CML (current-mode logic) outputs, as indicated by the CML suffix in its part number. The ADN2816ACPZ does not use the CML output designation. The output type affects termination, signal swing, and interfacing with downstream SERDES or optical module circuitry, so the output interface must be matched to the system design.
Can the ADN2816ACPZ and ADN2811ACPZ-CML be used interchangeably in the same design?
No. They are not drop-in replacements. The ADN2811ACPZ-CML supports a higher maximum data rate (2.7 Gbps versus 675 Mbps for the ADN2816ACPZ) and uses a CML output interface. These differences in speed grade and output interface mean the devices are suited to different system requirements and cannot be substituted without validating the data rate, output interface, and pin functions against the Analog Devices datasheets.
What supply voltage do the ADN2816ACPZ and ADN2811ACPZ-CML require?
Both devices operate from a single 3.3 V supply, consistent with the Analog Devices ADN2816 and ADN2811 datasheet specifications. Designers should confirm the exact supply tolerance and decoupling requirements in the respective datasheets before finalizing the power design.
Are the ADN2816ACPZ and ADN2811ACPZ-CML specified for the same operating temperature range?
Both parts are offered in the industrial temperature range, typically −40 °C to +85 °C, as specified in the Analog Devices datasheets. The exact operating temperature range and any derating conditions should be verified against the manufacturer documentation for each part before use in a design.