Overview
The AD8310ARM is a complete, dc to 440 MHz demodulating logarithmic amplifier (log amp) produced by Analog Devices Inc. This device is designed to provide a fast voltage mode output, capable of driving up to 25 mA into a grounded load in under 15 ns. It features a wide frequency range, from low audio frequencies up to 440 MHz, making it versatile for various applications. The AD8310ARM is known for its low cost, small size, low power consumption, high accuracy, and stability, along with a high dynamic range and good load-driving capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | dc to 440 MHz | |
| Logarithmic Slope | 24 mV/dB | |
| Logarithmic Intercept | −108 dBV | |
| Input Impedance | 1 kΩ in parallel with about 1 pF | |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Quiescent Current | 8 mA | mA |
| Output Current | Up to 25 mA | mA |
| Package Type | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | |
| Operating Temperature Range | −40°C to +85°C | °C |
| Mounting Type | Surface Mount |
Key Features
- Fast voltage mode output capable of driving up to 25 mA into a grounded load in under 15 ns.
- Wide frequency range from dc to 440 MHz, including low audio frequencies.
- Logarithmic linearity typically within ±0.4 dB up to 100 MHz.
- Supply- and temperature-independent scaling parameters.
- Fully differential input with moderately high impedance.
- Special filtering features to support a wide range of frequencies.
- Stable with capacitive loads of 100 pF.
- Low power consumption and high accuracy.
Applications
- Receiver Signal Strength Indication (RSSI).
- RF and microwave systems.
- Telecommunications.
- Industrial automation.
- Medical devices requiring signal strength measurement.
Q & A
- What is the frequency range of the AD8310ARM?
The AD8310ARM operates from dc to 440 MHz.
- What is the logarithmic slope of the AD8310ARM?
The logarithmic slope is 24 mV/dB.
- What is the input impedance of the AD8310ARM?
The input impedance is approximately 1 kΩ in parallel with about 1 pF.
- What is the supply voltage range for the AD8310ARM?
The supply voltage range is from 2.7 V to 5.5 V.
- How much current can the AD8310ARM output?
The AD8310ARM can drive up to 25 mA into a grounded load.
- What is the operating temperature range of the AD8310ARM?
The operating temperature range is from −40°C to +85°C.
- What type of package is the AD8310ARM available in?
The AD8310ARM is available in 8-TSSOP and 8-MSOP packages.
- What are some common applications of the AD8310ARM?
Common applications include RSSI, RF and microwave systems, telecommunications, industrial automation, and medical devices.
- Is the AD8310ARM suitable for high-frequency applications?
Yes, it is suitable for high-frequency applications up to 440 MHz.
- How does the AD8310ARM handle capacitive loads?
The AD8310ARM is stable with capacitive loads of up to 100 pF.
