Overview
The AD8310ARMZ, produced by Analog Devices Inc., is a complete, dc to 440 MHz demodulating logarithmic amplifier (log amp). This device is designed to provide a very fast voltage mode output, capable of driving up to 25 mA into a grounded load in under 15 ns. It features a progressive compression architecture, ensuring high accuracy and stability over a wide frequency range, from low audio frequencies to UHF. The AD8310 is known for its low cost, small size, low power consumption, and high dynamic range, making it versatile for various applications requiring signal reduction to its decibel equivalent.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | dc to 440 MHz |
| Logarithmic Slope | 24 mV/dB |
| Intercept | −108 dBV |
| Input Impedance | 1 kΩ in parallel with about 1 pF |
| Supply Voltage | 2.7 V to 5.5 V |
| Quiescent Current | 8 mA |
| Output Current | Up to 25 mA |
| Output Voltage Range | 400 mV to within 200 mV of the supply voltage |
| Temperature Range | −40°C to +85°C |
| Package Type | 8-lead MSOP |
Key Features
- Multistage demodulating logarithmic amplifier with six 14.3 dB amplifier stages and nine detector cells.
- Input-offset compensation loop and special filtering features for wide frequency range support.
- High impedance differential input (1 kΩ in parallel with about 1 pF) with the ability to match to 50 Ω.
- CMOS compatible chip enable and buffer input for postdetection bandwidth control.
- Low noise, high accuracy, and stability with a logarithmic linearity typically within ±0.4 dB up to 100 MHz.
- Stable with capacitive loads of 100 pF.
- Supply- and temperature-independent scaling parameters.
Applications
The AD8310ARMZ is suitable for a variety of applications, including:
- RF and microwave systems, such as RF power detectors and communication systems.
- Wireless sensor networks and other wireless communication devices.
- Instrumentation and test equipment requiring high accuracy signal measurement.
- Medical devices and industrial control systems needing precise signal demodulation.
Q & A
- What is the frequency range of the AD8310ARMZ?
The AD8310ARMZ operates from dc to 440 MHz. - What is the logarithmic slope of the AD8310ARMZ?
The logarithmic slope is 24 mV/dB. - What is the intercept of the AD8310ARMZ?
The intercept is −108 dBV. - What is the input impedance of the AD8310ARMZ?
The input impedance is approximately 1 kΩ in parallel with about 1 pF. - What is the supply voltage range for the AD8310ARMZ?
The supply voltage range is from 2.7 V to 5.5 V. - What is the maximum output current of the AD8310ARMZ?
The maximum output current is up to 25 mA. - What is the temperature range for the AD8310ARMZ?
The temperature range is from −40°C to +85°C. - In what package type is the AD8310ARMZ available?
The AD8310ARMZ is available in an 8-lead MSOP package. - Can the AD8310ARMZ be used for low audio frequencies?
Yes, the AD8310ARMZ can be used down to low audio frequencies. - How stable is the AD8310ARMZ with capacitive loads?
The AD8310ARMZ is stable with capacitive loads of up to 100 pF.
