Overview
The AD8304ARUZ is a monolithic logarithmic detector produced by Analog Devices Inc., optimized for the measurement of low frequency signal power in fiber optic systems. It utilizes an advanced translinear technique to provide an exceptionally large dynamic range in a versatile and easily used form. The device is designed for high accuracy and wide measurement range, achieved through proprietary design techniques and precise laser trimming.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Current Range | 100 pA to 10 mA | |
| Input Node Voltage | 0.46 to 0.54 | V |
| Supply Voltage | 3.0 V to 5.5 V | V |
| Logarithmic Slope | 10 mV/dB (at VLOG Pin) | |
| Basic Logarithmic Intercept | 100 pA | |
| Output Bandwidth | 10 MHz | |
| Slew Rate | 15 V/µs | |
| Quiescent Current (Enabled) | ~4.5 mA | |
| Package Type | 14-Lead TSSOP | |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Optimized for fiber optic photodiode interfacing
- Eight full decades of range with law conformance of 0.1 dB from 1 nA to 1 mA
- Single-supply operation (3.0 V to 5.5 V) and complete temperature stability
- Accurate laser-trimmed scaling with a logarithmic slope of 10 mV/dB (at VLOG Pin)
- Basic logarithmic intercept at 100 pA and easy adjustment of slope and intercept
- Output bandwidth of 10 MHz and 15 V/µs slew rate
- 1-, 2-, or 3-pole low-pass filtering at output
- Low power consumption with ~4.5 mA quiescent current (enabled)
- Miniature 14-lead TSSOP package
Applications
- High accuracy optical power measurement
- Wide range baseband log compression
- Versatile detector for Automatic Power Control (APC) loops
- Battery-operated applications due to low quiescent current and chip disable features
Q & A
- What is the primary function of the AD8304ARUZ? The AD8304ARUZ is a monolithic logarithmic detector optimized for the measurement of low frequency signal power in fiber optic systems.
- What is the input current range of the AD8304ARUZ? The input current range is from 100 pA to 10 mA.
- What is the supply voltage range for the AD8304ARUZ? The supply voltage range is from 3.0 V to 5.5 V.
- What is the logarithmic slope of the AD8304ARUZ? The logarithmic slope is 10 mV/dB at the VLOG Pin.
- What is the output bandwidth of the AD8304ARUZ? The output bandwidth is 10 MHz.
- What is the slew rate of the AD8304ARUZ? The slew rate is 15 V/µs.
- What is the quiescent current of the AD8304ARUZ when enabled? The quiescent current is approximately 4.5 mA.
- In what package is the AD8304ARUZ available? The AD8304ARUZ is available in a 14-lead TSSOP package.
- What is the operating temperature range of the AD8304ARUZ? The operating temperature range is from -40°C to +85°C.
- What are some common applications of the AD8304ARUZ? Common applications include high accuracy optical power measurement, wide range baseband log compression, and versatile detection for APC loops.
