AD8304 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8304
Manufacturer

ADI
ChipWorker Part#

CW543104333
Description

160dB Logarithmic Amplifier with Photo-Diode Interface
Documentation

Datasheet

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AD8304 Specifications

Attribute	Attribute Value

Part Number	AD8304
Manufacturer	ADI
ChipWorker Part#	CW543104333
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
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.
### Features and Benefits
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)

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