Overview
The AD8319ACPZ-R2, produced by Analog Devices Inc., is a demodulating logarithmic amplifier designed to accurately convert RF input signals to corresponding decibel-scaled output. This component is particularly suited for RF measurement and power control applications, operating up to frequencies of 10 GHz. It features a fully differential design using a high-speed SiGe process, which enhances its high-frequency performance. The AD8319 is known for its tight intercept variability over a 40 dB range and its reduced RF burst response time, making it a high-performance and cost-effective solution.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | 1 MHz to 8 GHz | |
| Dynamic Range | 40 dB | |
| Input Impedance | 500 Ω in parallel with 0.7 pF | |
| Maximum Input Power | 0 dBm (re: 50 Ω) | |
| Noise Spectral Density | 1.15 nV/√Hz | |
| Supply Current | 22 mA | |
| Response Time | 6 ns to 10 ns | |
| Package Type | 8-Lead LFCSP | |
| Dimensions | 2 mm × 3 mm |
Key Features
- Fully differential design using high-speed SiGe process for enhanced high-frequency performance.
- Tight intercept variability over a 40 dB range.
- Reduced RF burst response time of 6 ns to 10 ns.
- Low supply current of 22 mA.
- Compact package size of 2 mm × 3 mm.
- High accuracy over temperature with linear conformance error within ±0.5 dB.
- Includes an offset compensation loop to correct for offsets within the cascaded gain stages.
- Capable of controlling signals over a dynamic range of 40 dB.
Applications
- RF measurement and power control applications.
- Automatic Gain Control (AGC) loops.
- Wireless communication systems.
- Radar and microwave systems.
- Test and measurement equipment.
Q & A
- What is the primary function of the AD8319?
The AD8319 is a demodulating logarithmic amplifier that converts RF input signals to corresponding decibel-scaled output.
- What is the frequency range of the AD8319?
The AD8319 operates from 1 MHz to 8 GHz.
- What is the dynamic range of the AD8319?
The dynamic range of the AD8319 is 40 dB.
- What is the typical supply current of the AD8319?
The typical supply current is 22 mA.
- How does the AD8319 handle temperature variations?
The AD8319 maintains high accuracy over temperature with a linear conformance error within ±0.5 dB over the top 40 dB range of output power.
- What is the response time of the AD8319?
The response time of the AD8319 is between 6 ns to 10 ns.
- What package type is the AD8319 available in?
The AD8319 is available in an 8-Lead LFCSP package.
- What are the dimensions of the AD8319 package?
The package dimensions are 2 mm × 3 mm.
- What is the input impedance of the AD8319?
The input impedance is nominally 500 Ω in parallel with 0.7 pF.
- What is the maximum input power for the AD8319?
The maximum input power is typically 0 dBm (re: 50 Ω).
