ADL5385ACPZ Package and Pinout Reference
The ADL5385ACPZ is a highly linear, broadband quadrature modulator manufactured by Analog Devices. Operating over a wide frequency range from 50 MHz to 2200 MHz, it is engineered for demanding RF and microwave applications, including communication infrastructure, broadband wireless access systems, and microwave point-to-point radios.
Table of Contents
1. Overview and Core Features
The ADL5385ACPZ utilizes a silicon germanium (SiGe) bipolar process to achieve exceptional performance metrics. It features a high output power at 1 dB compression (P1dB) of 9.7 dBm at 350 MHz, coupled with a low broadband noise floor of -159 dBm/Hz. Its baseband I/Q inputs support a broad bandwidth, enabling it to modulate complex, high-data-rate signals.
2. Specifications and Parameter Table
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Operating Frequency | 50 MHz to 2200 MHz |
| Output P1dB | 9.7 dBm (at 350 MHz) |
| Broadband Noise Floor | -159 dBm/Hz |
| Package / Case | 24-VFQFN Exposed Pad, CSP |
| Supply Voltage | 4.75 V to 5.25 V |
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Check ADL5385ACPZ Stock3. Architecture and Block Diagram
The device integrates a local oscillator (LO) interface and high-linearity quadrature mixers. The LO drive is internally divided to generate the precise 90-degree phase-shifted signals required for the I (In-phase) and Q (Quadrature) modulation paths. This architectural layout minimizes external component count and reduces phase error, which is critical for complex digital modulation schemes like QAM and OFDM.
4. Video: Feature Breakdown
5. Equivalents, Cross-Reference, and Lifecycle
The ADL5385ACPZ is an active, production-grade component. While direct pin-to-pin cross-references are rare for highly specialized RF modulators, engineers migrating from older ADI modulators or Texas Instruments equivalents (such as the TRF3704 series) should carefully evaluate the LO drive levels and baseband input impedance requirements. Always verify the latest Product Change Notifications (PCNs) via Analog Devices before finalizing BOMs.
6. Frequently Asked Questions (FAQ)
What is the required Local Oscillator (LO) drive level for the ADL5385ACPZ?
The optimal LO drive level is typically between -6 dBm and +6 dBm, driven into a 50-ohm load. Adhering to this range ensures the internal splitters maintain precise phase balance.
Does the ADL5385ACPZ support differential baseband inputs?
Yes, the device requires differential I and Q baseband inputs. The input bias voltage must be carefully set (typically around 0.5 V) to optimize carrier feedthrough performance.
Alan Carter, Senior Hardware Engineer
Alan has over 15 years of experience in embedded systems design, specializing in ARM Cortex architectures, PCB routing for high-speed digital signals, and industrial IoT deployments.
