Part A
ADN2830ACPZ32
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5333 PCS
- Package
- WFQFN-32
- Series
- PMIC - Laser Drivers
Replacement verdict
Not a drop-in replacement
The ADN2830ACPZ32 and ADN2811ACPZ-CML-RL serve fundamentally different functions within optical communication systems, so neither device can directly substitute for the other. The ADN2830ACPZ32 is a laser bias controller, while the ADN2811ACPZ-CML-RL is a clock and data recovery IC with a CML output interface. Their differing signal roles, interface types, and application positions in the signal chain make cross-replacement impractical without redesigning the surrounding circuitry.
Different device function
Different output interface
Different signal chain role
Different application circuit
Parts at a glance
Part B
ADN2811ACPZ-CML-RL
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8492 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 | ADN2830ACPZ32 | ADN2811ACPZ-CML-RL | Why it matters |
|---|---|---|---|
| Function | Laser diode bias controller / APC loop | Clock and data recovery (CDR) IC | These are fundamentally different functions, so they are not functionally substitutable in a circuit. |
| Data Rate / Operating Speed | Not a data-rate device (analog bias control) | Up to 2.7 Gbps (OC-48 / STM-16) | The CDR must match the system line rate; the bias controller has no line-rate requirement. |
| Output Interface | Analog bias current to laser diode | CML differential data/clock outputs | Output signaling type determines compatibility with downstream optics or logic. |
| Input Signal | Monitor photodiode feedback | Differential high-speed data input | Input type defines what source the device can interface with in the signal chain. |
| Supply Voltage | 3.3 V nominal | 3.3 V nominal | Both operate from a 3.3 V rail, easing power-supply reuse, though function still differs. |
| Package | 32-lead LFCSP | 32-lead LFCSP | Same package footprint allows board-level drop-in only if pin functions and circuit role match, which they do not. |
| Primary Application | Laser bias / average power control in optical transmitters | Clock/data recovery in optical receivers | Application role determines whether the part belongs in the transmit or receive path. |
| Control Loop / PLL | Automatic power control (APC) loop | Integrated PLL for clock recovery | The internal loop type reflects the distinct control vs. timing-recovery purpose of each device. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADN2830ACPZ32 | ADN2811ACPZ-CML-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| PLL | - | Yes |
| Main Purpose | - | SONET/SDH, STM |
| Input | - | CML |
| Output | - | CML |
| Number of Circuits | - | 1 |
| Ratio - Input: Output | - | 1:2 |
| Differential - Input: Output | - | Yes/Yes |
| Frequency - Max | - | 2.66GHz |
| Voltage - Supply | 4.5V ~ 5.5V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | - | Surface Mount |
| Type | Laser Diode Controller (Fiber Optic) | - |
| Number of Channels | 1 | - |
| Supply Current | 25 mA | - |
| Current - Bias | 200 mA | - |
Frequently asked questions
What are the primary functions of the ADN2830ACPZ32 and ADN2811ACPZ-CML-RL?
The ADN2830ACPZ32 is a laser diode controller designed for continuous-wave (CW) laser bias and modulation control in optical transceiver modules. The ADN2811ACPZ-CML-RL is a clock and data recovery (CDR) IC with a limiting amplifier, intended for use in optical receivers to recover clock and data from high-speed serial streams.
Are the ADN2830ACPZ32 and ADN2811ACPZ-CML-RL functionally interchangeable?
No. The ADN2830ACPZ32 is a laser bias/modulation controller for the transmit path, while the ADN2811ACPZ-CML-RL is a CDR with limiting amplifier for the receive path. They perform different signal-chain functions and are not direct substitutes for one another.
What are the package and pin-count differences between the two parts?
The ADN2830ACPZ32 is supplied in a 32-lead LFCSP package. The ADN2811ACPZ-CML-RL is supplied in a 32-lead LFCSP package as well. Both are 32-lead LFCSP devices, but pin functions and internal circuitry differ, so PCB layouts are not interchangeable without redesign.
What data rates does the ADN2811ACPZ-CML-RL support compared with the ADN2830ACPZ32?
The ADN2811ACPZ-CML-RL is specified for continuous operation from 9.95 Gbps to 12.5 Gbps, covering SONET/SDH OC-192 and 10 Gigabit Ethernet rates. The ADN2830ACPZ32 is a laser controller intended for 10 Gbps optical transmitter applications; its modulation and bias control loops are designed for that transmit-side role rather than for CDR data-rate operation.
Do both devices support CML-compatible output interfaces?
The ADN2811ACPZ-CML-RL provides CML-compatible data and clock outputs, as indicated by the CML suffix in its ordering code. The ADN2830ACPZ32 is a laser controller with modulation and bias outputs intended to drive a laser diode; it does not provide a CML data output interface.
Can the ADN2830ACPZ32 and ADN2811ACPZ-CML-RL be used together in the same optical module design?
Yes, they are complementary. In a typical 10 Gbps optical transceiver, the ADN2830ACPZ32 can control the transmit laser while the ADN2811ACPZ-CML-RL recovers clock and data on the receive side. They occupy different portions of the signal chain and are not competing alternatives.
What supply voltages do the ADN2830ACPZ32 and ADN2811ACPZ-CML-RL require?
The ADN2830ACPZ32 operates from a single 3.3 V supply. The ADN2811ACPZ-CML-RL operates from a 3.3 V supply as well. Designers should confirm exact supply tolerances and decoupling requirements against the respective manufacturer datasheets before finalizing the power design.
Which part should be selected for a receive-path CDR function versus a transmit laser control function?
For receive-path clock and data recovery with a limiting amplifier, select the ADN2811ACPZ-CML-RL. For transmit-path laser bias and modulation control, select the ADN2830ACPZ32. Selection should be based on the signal-chain function required, not on package similarity.