AD8305中文资料PDF规格书
AD8305规格书详情
GENERAL DESCRIPTION
The AD8305 is an inexpensive microminiature logarithmic converter optimized for determining optical power in fiber optic systems. It uses an advanced implementation of a classic translinear (junction based) technique to provide a large dynamic range in a versatile and easily used form. A single-supply voltage of between 3 V and 12 V is adequate; dual supplies may optionally be used. The low quiescent current (typically 5 mA) permits use in battery-operated applications.
The input current, IPD, of 10 nA to 1 mA applied to the INPT pin is the collector current of an optimally scaled NPN transistor, which converts this current to a voltage (VBE) with a precise logarithmic relationship. A second such converter is used to handle the reference current (IREF)
applied to pin IREF. These input nodes are biased slightly above ground (0.5 V). This is generally acceptablefor photodiode applications where the anode does not need to be grounded. Similarly, this bias voltage is easily accounted for in generating IREF. The output of the logarithmic front end is available at Pin VLOG.
FEATURES
Optimized for fiber optic photodiode interfacing
Measures current over 5 decades
Law conformance 0.1 dB from 10 nA to 1 mA
Single- or dual-supply operation (3 V to 12 V total)
Full log-ratio capabilities
Nominal slope of 10 mV/dB (200 mV/decade)
Nominal intercept of 1 nA (set by external resistor)
Optional adjustment of slope and intercept
Complete and temperature stable
Rapid response time for a given current level
Miniature 16-lead chip scale package
(LFCSP 3 mm × 3 mm)
Low power: ~5 mA quiescent current
APPLICATIONS
Optical power measurement
Wide range baseband logarithmic compression
Measurement of current and voltage ratios
Optical absorbance measurement
产品属性
- 型号:
AD8305
- 制造商:
Analog Devices
- 功能描述:
SP AMP LOG AMP SGL R-R O/P 6V/12V 16LFCSP EP - Bulk
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ADI(亚德诺) |
6000 |
询价 | |||||
ADI |
58209 |
16余年资质 绝对原盒原盘 更多数量 |
询价 | ||||
ADI |
23+ |
16LFCSPVQ |
9000 |
原装正品,支持实单 |
询价 | ||
ADI/亚德诺 |
22+ |
QFN |
30000 |
十七年VIP会员,诚信经营,一手货源,原装正品可零售! |
询价 | ||
ADI |
24+ |
16-Lead LFCSP (3mm x 3mm w/ EP |
3660 |
十年信誉,只做全新原装正品现货,以优势说话 !! |
询价 | ||
23+ |
N/A |
58800 |
一级代理放心采购 |
询价 | |||
AnalogDevicesInc. |
19+ |
16-LFCSP-VQ(3x3) |
56800 |
只卖原装正品!价格超越代理!可开增值税发票! |
询价 | ||
ADI |
23+ |
LFCSP16 |
8650 |
受权代理!全新原装现货特价热卖! |
询价 | ||
ADI |
23+ |
N/A |
5000 |
专注配单,只做原装进口现货 |
询价 | ||
ADI |
19+ |
LFCSP |
35210 |
原装现货/放心购买 |
询价 |