AD8304ARU

160分贝范围（ 100 pA的-10 mA）的对数转换器 160 dB Range 100 pA -10 mA Logarithmic Converter

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