Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | Envelope detector plus TruPwr RMS detector |
| Frequency range | DC to 6 GHz |
| Input power dynamic range | 47 dB |
| Envelope bandwidth | 130 MHz |
| Envelope delay | 2 ns |
| Supply voltage | 4.75 V to 5.25 V |
| Typical current | 21.5 mA |
| Package | 16-lead LFCSP, 3 × 3 mm |
Product Overview
The ADL5511ACPZ-R7 combines two different RF measurement outputs in one device: a fast envelope output proportional to instantaneous input voltage and a separate true-rms output that reports signal power independently of peak-to-average ratio. It operates from dc to 6 GHz with 47 dB input power dynamic range.
This dual-output architecture is the key exact-part value. The envelope path provides 130 MHz bandwidth and only 2 ns delay, making it suitable for tracking fast amplitude changes in envelope-tracking or PA-linearization systems, while the rms path can simultaneously monitor true signal power.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| RF input range | DC to 6 GHz |
| Input power dynamic range | 47 dB |
| Output types | Envelope and TruPwr RMS |
| Envelope bandwidth | 130 MHz |
| Envelope delay | 2 ns |
| RMS conversion gain at 900 MHz | 1.9 V/V rms |
| Envelope conversion gain at 900 MHz | 1.46 V/V |
| Internal envelope reference | 1.1 V |
| Supply voltage | 4.75 V to 5.25 V |
| Typical current | 21.5 mA |
| Power-down consumption | 130 µW |
| Operating temperature | -40°C to +85°C |
| Package | 16-lead LFCSP, 3 × 3 mm with exposed pad |
| Family guidance | Recommended for new designs |
Design Considerations
The envelope and rms outputs answer different measurement questions. The envelope output preserves rapid amplitude behavior, while the rms output averages waveform energy. A control loop should use the output that corresponds to the intended PA-control or measurement objective rather than treating them as interchangeable replicas.
The 130 MHz envelope bandwidth requires careful PCB layout and output loading if fast-edge fidelity matters. Parasitic capacitance on the envelope node can reduce the bandwidth advantage even though the RF input itself remains functional to 6 GHz.
Related Engineering Resources
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