- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2062 > AD8305ACPZ-R2 (Analog Devices Inc)IC AMP LOG CONV 100DB 16-LFCSP PDF資料下載
參數(shù)資料
| 型號： | AD8305ACPZ-R2 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP LOG CONV 100DB 16-LFCSP |
| 設計資源： | Interfacing ADL5315 to Translinear Logarithmic Amplifier (CN0056) Interfacing ADL5317 High Side Current Mirror to a Translinear Logarithmic Amplifier in an Avalanche Photodiode Power Detector |
| 標準包裝： | 250 |
| 類型： | 對數(shù)轉換器 |
| 應用： | 光纖 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 16-LFCSP-VQ |
| 包裝： | 帶卷 (TR) |
AD8305
Rev. B | Page 15 of 24
CALIBRATION
The AD8305 has a nominal slope and intercept of 200 mV/decade
and 1 nA, respectively. These values are untrimmed, and the
slope alone may vary as much as 7.5% over temperature. For
this reason, it is recommended that a simple calibration be done
to achieve increased accuracy.
IPD (A)
1.4
0
V
LO
G
(V
)
1.2
1.0
0.8
0.6
0.4
0.2
4
3
2
1
0
–1
–2
–3
IDEAL OUTPUT
CALIBRATED ERROR
MEASURED OUTPUT
UNCALIBRATED ERROR
ER
R
O
R
;d
B
(1
0m
V/
d
B
)
1n
10n
10
100
1m
10m
100n
1
03
05
3-
0
35
Figure 36. Using Two-Point Calibration to Increase Measurement Accuracy
Figure 36 shows the improvement in accuracy when using a two
point calibration method. To perform this calibration, apply
two known currents, I1 and I2, in the linear operating range
between 10 nA and 1 mA. Measure the resulting output, V1 and
V2, respectively, and calculate the slope m and intercept b.
m = (V1 V2)/[log10(I1) log10(I2)]
(7)
b = V1 – m × log10(I1)
(8)
The same calibration is performed with two known optical
powers, P1 and P2. This allows for calibration of the entire
measurement system while providing a simplified relationship
between the incident optical power and VLOG voltage.
m = (V1 V2)/(P1 P2)
(9)
b = V1 m × P1
(10)
The uncalibrated error line in Figure 36 is generated assuming
that the slope of the measured output was 200 mV/ decade
when in fact it was actually 194 mV/decade. Correcting for this
discrepancy decreased measurement error up to 3 dB.
相關PDF資料 |
PDF描述 |
|---|---|
| AD8306AR | IC LOGARITHM AMP 5-400MHZ 16SOIC |
| AD8307AN | IC LOGARITHMIC AMP 8-DIP |
| AD8309ARU | IC LOGARITHM AMP 100DB 16-TSSOP |
| AD830ANZ | IC VIDEO DIFF AMP HS 8-DIP |
| AD8310ARM | IC LOGARITHMIC AMP 95DB 8-MSOP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD8305ACPZ-RL7 | 功能描述:IC LOGARITH CONV 100DB 16-LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:可變增益放大器 應用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應商設備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| AD8305BRU | 制造商:Analog Devices 功能描述:- Bulk |
| AD8305-EVAL | 制造商:Analog Devices 功能描述:Evaluation Board For IC Log Amp Single 12V 制造商:Analog Devices 功能描述:AD8305 EVALUATION BOARD - Bulk |
| AD8305-EVALZ | 制造商:Analog Devices 功能描述:EVALUATION BOARDS - Bulk |
| AD8306 | 制造商:AD 制造商全稱:Analog Devices 功能描述:5 MHz-400 MHz 100 dB High Precision Limiting-Logarithmic Amplifier |
發(fā)布緊急采購，3分鐘左右您將得到回復。