Overview
The AD8302ARU-REEL7, produced by Analog Devices Inc., is a fully integrated RF/IF gain and phase detector. This component is designed for measuring gain/loss and phase in various receive, transmit, and instrumentation applications. It operates over a wide frequency range from low frequencies up to 2.7 GHz and requires few external components, making it a versatile and efficient solution. The AD8302 is available in a 14-lead TSSOP package and operates from a single supply voltage of 2.7 V to 5.5 V, with a stable 1.8 V reference voltage output.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Range | 50 Ω system | –60 dBm | 0 dBm | ||
| Frequency Range | 2.7 GHz | ||||
| Gain Measurement Range | ±30 dB | ||||
| Gain Measurement Scaling | 30 mV/dB | ||||
| Phase Measurement Range | 0° | 180° | |||
| Phase Measurement Scaling | 10 mV/degree | ||||
| Supply Voltage | 2.7 V | 5.5 V | |||
| Output Bandwidth | 30 MHz | ||||
| Temperature Range | –40°C | +85°C | |||
| Package Type | 14-lead TSSOP |
Key Features
- Measures gain/loss and phase up to 2.7 GHz
- Dual demodulating log amps and phase detector
- Accurate gain measurement scaling (30 mV/dB) with typical nonlinearity < 0.5 dB
- Accurate phase measurement scaling (10 mV/degree) with typical nonlinearity < 1 degree
- Operates from supply voltages of 2.7 V to 5.5 V
- Stable 1.8 V reference voltage output
- Small signal envelope bandwidth from DC to 30 MHz
- Measurement, controller, and level comparator modes
- Output drivers can source or sink up to 8 mA
Applications
- RF/IF PA linearization
- Precise RF power control
- Remote system monitoring and diagnostics
- Return loss/VSWR measurements
- Log ratio function for AC signals
Q & A
- What is the frequency range of the AD8302?
The AD8302 operates from low frequencies up to 2.7 GHz.
- What is the input range of the AD8302 in a 50 Ω system?
The input range is from –60 dBm to 0 dBm.
- How does the AD8302 measure gain and phase?
The AD8302 uses dual demodulating logarithmic amplifiers and a phase detector to measure gain and phase.
- What is the scaling for gain and phase measurements?
Gain is scaled to 30 mV/dB, and phase is scaled to 10 mV/degree.
- What are the operating supply voltages for the AD8302?
The AD8302 operates from 2.7 V to 5.5 V.
- What is the output bandwidth of the AD8302?
The output bandwidth is up to 30 MHz.
- Can the AD8302 be used in controller mode?
Yes, the AD8302 can be used in controller mode to force the gain and phase of a signal chain toward predetermined setpoints.
- What is the temperature range for the AD8302?
The AD8302 operates over a temperature range of –40°C to +85°C.
- In what package is the AD8302 available?
The AD8302 is available in a 14-lead TSSOP package.
- Is an evaluation board available for the AD8302?
Yes, an evaluation board is available for the AD8302.
