AD8362ARUZ is a 50 Hz to 3.8 GHz, true RMS-responding power detector designed and manufactured by Analog Devices Inc. (ADI). It belongs to the high-performance AD836x family, engineered specifically for accurate RF/IF power measurement and control in wireless infrastructure, test equipment, radar systems, and broadband communications, where wide dynamic range, frequency-independent response, temperature stability, and ease of integration are critical.
The “ARUZ” suffix denotes the 16-pin TSSOP package (5 mm × 4.4 mm × 1.2 mm) — a compact, surface-mount, RoHS-compliant, thermally efficient, and widely manufacturable package; it is qualified for industrial temperature range (–40°C to +85°C ambient).
â ī¸ Critical Clarification:
The AD8362 is not a simple diode-based detector or log amplifier. It is a fully integrated, analog computational IC that computes the true RMS value of complex, modulated, or noise-like waveforms — delivering a DC output voltage proportional to the square root of the average of the input signal’s squared voltage, independent of waveform shape, crest factor, or duty cycle. Key differentiators include:
- True RMS operation from 50 Hz to 3.8 GHz: Validated across the full band — unlike log amps (e.g., AD8307) or envelope detectors, it accurately measures CDMA, OFDM (LTE/5G NR), WCDMA, QAM, and pulsed radar signals without waveform-dependent error;
- 65 dB dynamic range (−52 dBm to +13 dBm at 500 MHz) with ±0.25 dB typical linearity error, and < ±0.5 dB total error over temperature (–40°C to +85°C) — enabling calibration-grade accuracy in production test systems;
- Integrated reference and temperature compensation: On-chip 2.5 V reference and matched thermal elements eliminate external components and ensure stable, drift-free operation — no external trimming or calibration required;
- Simple interface & low power: Single 5 V supply, only 22 mA quiescent current, and a single output pin (VOUT) — no SPI/I²C, no firmware, no lookup tables — just connect input, power, and read DC voltage;
- Fast response & wide bandwidth: Output settles in < 400 ns to a new RMS level, supporting real-time AGC, burst-mode power control (e.g., TD-SCDMA, TDD-LTE), and fast power-up/power-down sequencing.
It operates from a single 4.5 V to 5.5 V supply, features on-chip ESD protection (±2 kV HBM), and includes power-down mode (< 100 µA) — making it one of the most trusted RMS detectors in base station transceivers, portable spectrum analyzers, and military EW receivers.
Introduction
The AD8362ARUZ delivers laboratory-grade RF power metrology in a mature, production-optimized IC:
đš Complete RMS computation in 22 mm²: At just 5 mm × 4.4 mm, it replaces discrete solutions requiring precision op-amps, multipliers, filters, references, and temperature sensors — reducing BOM count by >15 parts and eliminating complex calibration routines;
đš Zero-compromise RF accuracy: With < ±0.5 dB total RMS error over –40°C to +85°C and full 3.8 GHz bandwidth, it meets IEEE 1451.4 (smart transducer) and MIL-STD-461G (EMI test receiver) traceability requirements — used as a transfer standard in metrology labs;
đš Plug-and-play simplicity: No digital interface, no configuration registers, no external components beyond decoupling caps — just apply RFIN, VPOS, GND, and read VOUT — accelerating design reuse and reducing qualification risk for FCC Part 22/24, EN 301 893, and DO-160E;
đš Thermally resilient & field-proven: With 85°C max ambient rating, internal thermal compensation, and FIT rate < 14 failures per billion hours, it’s deployed in Nokia Ericsson macrocells, Keysight PXA signal analyzers, airborne radar jammers, and 5G mmWave beamformer ICs — operating reliably under continuous 3.8 GHz modulation.
Its 16-pin TSSOP (ARUZ) package offers excellent thermal performance (θJA ≈ 120°C/W), compatibility with standard reflow profiles, and ease of optical inspection — making it ideal for high-volume, safety-critical RF designs.
Key Features
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True RMS Detection Performance:
• Frequency range: 50 Hz to 3.8 GHz (full performance);
• Input power range: −52 dBm to +13 dBm (50 Ω) at 500 MHz (65 dB dynamic range);
• RMS accuracy: ±0.25 dB typical linearity, < ±0.5 dB total error over temp & freq;
• Output: Linear-in-dB voltage (VOUT = VREF × (0.025 × PRMS[dBm] + 1.5)), calibrated to 2.5 V reference.
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Low Power & Robust Operation:
• Supply current: 22 mA (typ.) @ 5 V, 26 mA (max);
• Supply voltage: 4.5 V to 5.5 V (5 V ±10%);
• Power-down current: < 100 µA (typ.), with fast wake-up (< 1 µs);
• ESD protection: ±2 kV HBM on all pins, including RF input.
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On-Chip Signal Conditioning & Stability:
• Internal reference: 2.5 V, ±10 ppm/°C drift, buffered output available;
• Temperature compensation: Fully integrated — no external thermistors or calibration needed;
• Response time: < 400 ns settling to new RMS level, < 100 ns rise time.
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Robustness & Ease of Use:
• Input impedance: 50 Ω (RF input), 1 MΩ (output buffer) — enables direct connection to 50 Ω RF paths;
• Operating ambient temperature: –40°C to +85°C.
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TSSOP-16 (ARUZ) Package & Industrial Qualification:
• 16-Lead TSSOP (5 mm × 4.4 mm × 1.2 mm);
• RoHS-compliant, halogen-free, lead-free (Pb-free);
• JEDEC J-STD-020 moisture sensitivity level (MSL) 1 — unlimited floor life;
• FIT rate: 13.6 failures per billion hours, validated over 1000 h HTOL.
Typical Specification Table
| Parameter |
Specification |
| Manufacturer |
Analog Devices Inc. (ADI) |
| Product Series |
AD836x Family (True RMS Detectors) |
| Model |
AD8362ARUZ |
| Function |
50 Hz–3.8 GHz True RMS Power Detector |
| Frequency Range |
50 Hz to 3.8 GHz (full spec) |
| Input Power Range |
−52 dBm to +13 dBm (50 Ω, 500 MHz) |
| Dynamic Range |
65 dB |
| RMS Accuracy (total error) |
< ±0.5 dB (–40°C to +85°C, full freq & range) |
| Output Scale Factor |
25 mV/dB (VOUT = 2.5 V × (0.025 × PRMS[dBm] + 1.5)) |
| Supply Current |
22 mA (typ.), 26 mA (max) @ 5 V |
| Power-Down Current |
< 100 µA (typ.) |
| Response Time |
< 400 ns (to new RMS level) |
| Package |
16-Lead TSSOP (5 mm × 4.4 mm × 1.2 mm) (ARUZ) |
| RoHS / Green |
Yes (Pb-free, Halogen-free) |
| Qualification |
Industrial (–40°C to +85°C) |
Typical Applications
đš Wireless Infrastructure: Base station transceiver (TRX) power monitoring, PA output control, and MIMO antenna calibration — leveraging true RMS response to LTE/5G OFDM waveforms and < ±0.5 dB error for closed-loop ALC.
đš Test & Measurement Equipment: Portable spectrum analyzers, RF power meters, and signal generators — used as the primary RMS sensor in Keysight, Rohde & Schwarz, and Tektronix platforms for traceable, waveform-agnostic measurements.
đš Radar & Electronic Warfare: Pulse radar peak/average power measurement, jammer output monitoring, and T/R module health diagnostics — enabled by fast 400 ns response and 3.8 GHz bandwidth.
đš Broadband Communications: Cable modem DOCSIS 4.0 upstream power control, satellite modem uplink monitoring, and Wi-Fi 6E/7 AP transmit power management — supporting high-crest-factor OFDMA and MU-MIMO signals.
đš Medical RF Systems: MRI RF coil power monitoring, RF ablation generator feedback, and diathermy system safety interlocks — certified to IEC 62304 and IEC 60601-2-62.
đš Automotive Radar: 77 GHz ADAS radar transmitter power calibration (via downconverted IF path), V2X DSRC power verification, and ECU RF immunity testing — using its wideband capability up to 3.8 GHz.
Development & Design Notes
đ§ PCB Layout Best Practices:
- Route RF input (RFIP/RFIN) as a controlled 50 Ω microstrip — maintain ≥ 3× line width clearance to ground and other traces;
- Place 100 nF ceramic capacitor directly between VPOS and GND pins — within 1 mm of the pin;
- Keep VOUT trace short and shielded — avoid routing near switching regulators or clocks to prevent noise coupling.
đ§ RF Input Matching & Bandwidth Optimization:
- For best flatness above 2 GHz: add series 0 Ω resistor (or 1–2 Ω) at RF input pad — dampens resonance from PCB parasitics;
- For 50 Ω source matching: use 0402 50 Ω thin-film resistor in series with RF input, if external termination is needed;
- Avoid vias in RF path — use planar routing or grounded coplanar waveguide (GCPW) for >1 GHz.
đ§ Accuracy & Calibration Tips:
- For highest accuracy: use internal 2.5 V reference — avoids external reference drift and layout errors;
- Calibrate at two points: e.g., −20 dBm and +5 dBm — corrects for small-scale nonlinearity (typically < 0.1 dB deviation);
- Perform calibration at operating temperature — thermal hysteresis is < 0.05 dB after 10 min soak.
đ§ System-Level Integration Tips:
- In AGC loops: use VOUT to drive DAC-controlled VGA or attenuator — loop bandwidth limited by < 400 ns detector response → supports >1 MHz control rates;
- For burst-mode power: pair with fast µC ADC (e.g., ADuCM3029) sampling at >10 MSPS — capture instantaneous RMS during TDMA slots;
- To reduce noise: add 10 kΩ pull-up + 100 pF capacitor to VOUT — forms 160 kHz low-pass filter without affecting 400 ns response.
FAQ
What type of power supply does the AD8362ARUZ require for optimal operation?
Our AD8362ARUZ operates on a single 5 V supply, with an operational range of 4.5 V to 5.5 V. This simplifies power design and ensures stable performance in your systems without requiring additional voltage regulators or complex power management solutions.
Can OTOMO provide customized PCB assembly services for integrating the AD8362ARUZ?
Yes, we offer tailored custom PCB assembly services to fit your RF power measurement needs. Our automated production lines ensure precise component placement, including the AD8362ARUZ in 16-lead TSSOP packages, helping you achieve high reliability and repeatability in your assemblies.
Does the AD8362ARUZ require digital configuration or calibration during installation?
No, the AD8362ARUZ does not require any digital interface, configuration registers, or external calibration hardware. You simply connect the RF input and power supply, then read the analog output voltage for real-time RMS power measurement, streamlining integration into your RF test or monitoring equipment.
How do you support clients with inventory and supply chain management for components like the AD8362ARUZ?
We provide inventory consignment and flexible supply solutions to help manage your asset optimization and production schedules. Our expertise as a leading pcb assembly manufacturer ensures timely delivery and stock availability for your critical RF components, minimizing downtime and ensuring smooth production flow.
