AD8304
PRODUCTION160 dB Logarithmic Amplifier with Photo-Diode Interface
- Part Models
- 2
- 1ku List Price
- Starting From $17.13
Part Details
- Optimized for Fiber Optic Photodiode Interfacing
- Eight Full Decades of Range
- Single-Supply Operation
(3.0 V– 5.5 V) - Complete and Temperature Stable
- 1-, 2-, or 3-Pole Low-Pass Filtering at Output
- Miniature 14-Lead Package (TSSOP)
- Accurate Laser-Trimmed Scaling:
Logarithmic Slope of 10 mV/dB (at VLOG Pin)
Basic Logarithmic Intercept at 100 pA
Easy Adjustment of Slope and Intercept - Output Bandwidth of 10 MHz, 15 V/µs Slew Rate
- Low Power: ~4.5 mA Quiescent Current (Enabled)
The AD8304 is a monolithic logarithmic detector optimized for the measurement of low frequency signal power in fiber optic systems. It uses an advanced translinear technique to provide an exceptionally large dynamic range in a versatile and easily used form. Its wide measurement range and accuracy are achieved using proprietary design techniques and precise laser trimming. In most applications only a single positive supply, VP, of 5 V will be required, but 3.0 V to 5.5 V can be used, and certain applications benefit from the added use of a negative supply, VN. When using low supply voltages, the log slope is readily altered to fit the available span. The low quiescent current and chip disable features facilitate use in battery-operated applications.
The AD8304 is available in a 14-lead TSSOP package and specified for operation from -40°C to +85°C.
Documentation
Data Sheet 1
Application Note 1
Technical Articles 2
Analog Dialogue 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD8304ARUZ | 14-Lead TSSOP | ||
| AD8304ARUZ-RL7 | 14-Lead TSSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 5, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4 |
||
| AD8304ARUZ | PRODUCTION | |
| AD8304ARUZ-RL7 | PRODUCTION | |
|
Feb 11, 2011 - 10_0005 Halogen Free Material Change for TSSOP Products Assembled at Amkor |
||
| AD8304ARUZ | PRODUCTION | |
| AD8304ARUZ-RL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- AD8304
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
AD8304 Evaluation Board