Overview
The AD8313ARM from Analog Devices Inc. is a highly advanced 8-stage logarithmic amplifier designed for precise RF signal measurement and power amplifier control. This component accurately converts RF signals within the 0.1 GHz to 2.5 GHz frequency range into equivalent decibel-scaled values at its DC output. The AD8313ARM is fabricated using Analog Devices' advanced 25 GHz silicon bipolar IC process and is available in an 8-lead MSOP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | 0.1 GHz to 2.5 GHz | |
| Dynamic Range | 70 dB | |
| Accuracy | ±1.0 dB over 65 dB range (@ 1.9 GHz) | |
| Response Time | 40 ns full-scale typical | |
| Supply Voltage | 2.7 V to 5.5 V | |
| Power Consumption | 40 mW at 3 V | |
| Power-Down Current | 20 µA | |
| Operating Temperature | −40°C to +85°C | |
| Package Type | 8-lead MSOP |
Key Features
- Wide bandwidth: 0.1 GHz to 2.5 GHz
- High dynamic range: 70 dB to ±3.0 dB
- High accuracy: ±1.0 dB over 65 dB range (@ 1.9 GHz)
- Fast response time: 40 ns full-scale typical
- Controller mode with error output
- Scaling stable over supply and temperature
- Low power consumption: 40 mW at 3 V
- Power-down feature with low current (20 µA) sleep mode
- Fully differential design with low frequency impedance of nominally 900 Ω in parallel with 1.1 pF
- Low noise spectral density referred to the input: 0.6 nV/√Hz
Applications
- RF transmitter power amplifier setpoint control and level monitoring
- Logarithmic amplifier for RSSI measurement in cellular base stations, radio links, and radar systems
Q & A
- What is the frequency range of the AD8313ARM?
The AD8313ARM operates within a frequency range of 0.1 GHz to 2.5 GHz.
- What is the dynamic range of the AD8313ARM?
The dynamic range of the AD8313ARM is 70 dB.
- How accurate is the AD8313ARM in terms of signal conversion?
The AD8313ARM has an accuracy of ±1.0 dB over a 65 dB range at 1.9 GHz.
- What is the typical response time of the AD8313ARM?
The typical response time of the AD8313ARM is 40 ns full-scale.
- What is the supply voltage range for the AD8313ARM?
The supply voltage range for the AD8313ARM is 2.7 V to 5.5 V.
- How much power does the AD8313ARM consume at 3 V supply?
The AD8313ARM consumes 40 mW at a 3 V supply.
- What is the power-down current of the AD8313ARM?
The power-down current of the AD8313ARM is 20 µA.
- What is the operating temperature range of the AD8313ARM?
The operating temperature range of the AD8313ARM is −40°C to +85°C.
- In what package type is the AD8313ARM available?
The AD8313ARM is available in an 8-lead MSOP package.
- What are some common applications of the AD8313ARM?
The AD8313ARM is commonly used in RF transmitter power amplifier setpoint control and level monitoring, and as a logarithmic amplifier for RSSI measurement in cellular base stations, radio links, and radar systems.
