Part A
ADN2830ACPZ32
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5333 ПКС
- Package
- WFQFN-32
- Series
- PMIC - Лазерные драйверы
Replacement verdict
Not a drop-in replacement
The ADN2830ACPZ32 and ADN2819ACP-CML serve fundamentally different functions within optical communication systems, with no overlap in core electrical characteristics, package configuration, or application role. The ADN2830ACPZ32 is a laser diode controller/bias driver, while the ADN2819ACP-CML is a clock and data recovery IC, so neither device can substitute for the other in a given circuit design.
Different device function
Different package type
Different supply voltage
Different interface standard
Parts at a glance
Part B
ADN2819ACP-CML
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5086 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 | ADN2830ACPZ32 | ADN2819ACP-CML | Why it matters |
|---|---|---|---|
| Function | Laser diode bias controller / APC loop | Multirate clock and data recovery (CDR) IC | These are fundamentally different device types, so they are not functionally substitutable in a design. |
| Data Rate / Operating Speed | Not a data-rate device (analog bias control loop) | Multirate, supports OC-3 to OC-48 (approx. 155 Mbps to 2.7 Gbps) | Determines the maximum serial data throughput the device can process in a fiber-optic link. |
| Primary Application | Laser bias current control in optical transmitters | Clock/data recovery in optical receivers and transponders | Defines where in the signal chain the part is used (transmit vs. receive path). |
| Package | 32-lead LFCSP | 32-lead LFCSP | Package footprint affects PCB layout and assembly compatibility. |
| Supply Voltage | 3.0 V to 5.5 V (single supply) | 3.3 V nominal (3.0 V to 3.6 V) | Supply range must match the board's power rail to avoid damage or malfunction. |
| Output Interface | Analog bias current output to laser diode | CML-compatible recovered clock and data outputs | Output signal type must be compatible with the downstream circuitry. |
| Control Interface | Analog setpoint / monitor (no digital bus) | I2C serial control/monitoring interface | Determines how the device is configured and monitored by the host system. |
| Operating Temperature Range | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | Must cover the ambient conditions of the target application. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADN2830ACPZ32 | ADN2819ACP-CML |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| PLL | - | Yes |
| Main Purpose | - | SONET/SDH, STM |
| Input | - | CML |
| Output | - | CML |
| Ratio - Input: Output | - | 1:2 |
| Differential - Input: Output | - | Yes/Yes |
| Frequency - Max | - | 2.7GHz |
| 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
Are the ADN2830ACPZ32 and ADN2819ACP-CML functionally interchangeable?
No. The ADN2830ACPZ32 is a laser diode bias controller, while the ADN2819ACP-CML is a multirate clock and data recovery (CDR) IC. They serve different signal-chain functions and are not drop-in replacements for one another.
What are the primary functions of each device?
The ADN2830ACPZ32 provides closed-loop bias current control for laser diodes in optical transmitters. The ADN2819ACP-CML performs clock and data recovery for serial data streams, typically in optical receiver and backplane applications.
Do both parts use the same package and pinout?
No. The ADN2830ACPZ32 is supplied in a 32-lead LFCSP package, while the ADN2819ACP-CML is supplied in a 48-lead LFCSP package. Package size, pin count, and pin functions differ, so PCB land patterns are not compatible.
Can these two devices be used together in the same optical module design?
Yes, they can coexist in a module because they perform complementary functions: the ADN2830ACPZ32 controls transmitter laser bias, and the ADN2819ACP-CML recovers clock and data on the receive path. Their coexistence depends on the overall module architecture and is not a substitute relationship.
Are the supply voltage requirements the same for both parts?
No. The ADN2830ACPZ32 operates from a single 3.3 V supply, whereas the ADN2819ACP-CML operates from a 3.3 V supply with additional on-chip regulation for its core. Designers must verify the exact supply and decoupling requirements in each respective datasheet.
Which device is intended for the transmit path and which for the receive path?
The ADN2830ACPZ32 is intended for the transmit path as a laser bias controller. The ADN2819ACP-CML is intended for the receive path as a clock and data recovery IC. This distinction is fundamental to their roles in an optical transceiver.
Can the ADN2819ACP-CML replace the ADN2830ACPZ32 in an existing laser bias control circuit?
No. The ADN2819ACP-CML does not provide laser bias current control, and its pinout and package differ. Substitution would require a complete redesign of the circuit and is not supported by the devices' functions.