Part A
ADN2830ACPZ32
ADI公司
- Lifecycle
- Active
- Stock
- 5333 件
- Package
- WFQFN-32
- Series
- PMIC-雷射驅動器
Replacement verdict
Not a drop-in replacement
The ADN2812ACPZ and ADN2830ACPZ32 are not functionally interchangeable despite sharing the same LFCSP package family. The ADN2812ACPZ is a clock and data recovery IC with integrated limiting amplifier and quantization, while the ADN2830ACPZ32 is a laser diode controller with bias and modulation current outputs. Their core functions, signal interfaces, and application roles differ fundamentally, so substitution requires complete circuit redesign rather than a direct swap.
Different device function
Different signal interface
Different application role
Different output configuration
Parts at a glance
Part B
ADN2812ACPZ
ADI公司
- Lifecycle
- Active
- Stock
- 6938 件
- Package
- WFQFN-32
- Series
- 時鐘定時-特定應用
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADN2812ACPZ | ADN2830ACPZ32 | Why it matters |
|---|---|---|---|
| Function / Device Type | Continuous-rate clock and data recovery (CDR) IC | Laser diode bias controller / APC loop IC | These are fundamentally different functions, so they are not substitutable for one another in a circuit. |
| Primary Application | Receiver-side clock/data recovery in optical and backplane links | Closed-loop bias control of laser diodes in optical transmitters | The intended signal-chain position differs (receive path vs. transmit path), which determines whether the part fits a given design. |
| Data Rate / Operating Speed | Continuous rate from 12.3 Mb/s to 2.7 Gb/s | Not a data-rate device (analog bias control loop) | Data-rate capability is a key selection criterion for CDR parts, while the bias controller is rate-agnostic. |
| Output Signal Type | Recovered clock and retimed data (CML/LVPECL-type outputs) | Analog bias current to laser diode | The output interface must match the downstream circuitry; a digital CDR output cannot drive a laser bias input directly. |
| Supply Voltage | 3.3 V nominal (3.0 V to 3.6 V) | 5.0 V nominal | Different supply rails affect power design and whether the part can share an existing rail. |
| Package | 32-lead LFCSP (5 mm x 5 mm) | 32-lead LFCSP (5 mm x 5 mm) | Although the package footprint is the same, the pin functions differ, so board-level interchange is not possible. |
| Control Interface | I2C-compatible serial control port | Analog setpoint and monitor pins (no digital bus) | Firmware and host-control architecture must match the device's configuration method. |
| Typical Power Consumption | Approximately 500 mW typical | Lower, loop-control power only (laser load dominates) | Power budget and thermal planning depend on the device's own dissipation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADN2830ACPZ32 | ADN2812ACPZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Laser Diode Controller (Fiber Optic) | - |
| Number of Channels | 1 | - |
| Voltage - Supply | 4.5V ~ 5.5V | 3V ~ 3.6V |
| Supply Current | 25 mA | - |
| Current - Bias | 200 mA | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| PLL | - | Yes |
| Main Purpose | - | SONET/SDH |
| Input | - | CML |
| Output | - | CML |
| Number of Circuits | - | 1 |
| Ratio - Input: Output | - | 1:2 |
| Differential - Input: Output | - | Yes/Yes |
| Frequency - Max | - | 2.7GHz |
| Mounting Type | - | Surface Mount |
Frequently asked questions
Are the ADN2812ACPZ and ADN2830ACPZ32 functionally interchangeable?
No. The ADN2812ACPZ is a continuous-rate clock and data recovery (CDR) IC with integrated limiting amplifier and quantizer, while the ADN2830ACPZ32 is a laser diode bias and modulation current controller. They serve different signal-chain functions and are not drop-in replacements for one another.
What are the primary functions of each device?
The ADN2812ACPZ performs clock and data recovery for serial data streams, supporting continuous rates from 12.3 Mb/s to 2.7 Gb/s with integrated limiting amplifier and quantizer. The ADN2830ACPZ32 is a closed-loop laser bias and modulation controller intended for driving laser diodes in optical transmitters, providing bias and modulation current control with APC (automatic power control) functionality.
Do both parts use the same package and pinout?
Both devices are offered in a 32-lead LFCSP (ACPZ) package, but their pinouts and internal functions differ because they are different product types. The shared package footprint does not imply pin-for-pin compatibility; each design must follow the respective datasheet pin descriptions and land pattern.
What supply voltages do the ADN2812ACPZ and ADN2830ACPZ32 require?
The ADN2812ACPZ operates from a single 3.3 V supply. The ADN2830ACPZ32 also operates from a 3.3 V supply. Designers should confirm exact supply tolerances and decoupling requirements in the respective manufacturer datasheets before layout.
Which device is appropriate for an optical receiver versus an optical transmitter?
The ADN2812ACPZ is suited to the receive path, where it recovers clock and retimes data from a photodiode/TIA signal chain. The ADN2830ACPZ32 is suited to the transmit path, where it controls laser bias and modulation currents. Selecting the correct device depends on whether the design requires data recovery or laser driver control.
Can the ADN2830ACPZ32 be used to recover clock and data in a serial link?
No. The ADN2830ACPZ32 is a laser bias and modulation controller and does not provide clock and data recovery functions. Clock/data recovery in a serial link requires a CDR device such as the ADN2812ACPZ.
Are evaluation boards or reference designs available for these parts?
Analog Devices typically provides evaluation boards and documentation for its high-speed signal chain and optical products. Designers should consult the official Analog Devices product pages and datasheets for the ADN2812ACPZ and ADN2830ACPZ32 to confirm availability of evaluation hardware and reference layouts before committing to a design.