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參數(shù)資料
| 型號： | ZN427E8DP |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| 中文描述： | 250 的低電流運算，低反向泄露，低噪聲穩(wěn)壓二極管 |
| 文件頁數(shù)： | 14/17頁 |
| 文件大?。?/td> | 311K |
| 代理商： | ZN427E8DP |
ZN427
13
BIPOLAR OPERATION
For bipolar operation the input to the ZN427 is offset by half
full-scale by connecting a resistor R
3
between V
REF
IN and V
IN
(Fig.16).
Fig.16 Bipolar operation - general connection
R1
R3
R2
GROUND
7
9
6
ZN427
VIN
AIN
VREF IN
When A
IN
= -FS, V
IN
needs to be equal to zero.
When A
IN
= +FS, V
IN
needs to be equal to V
REF
IN.
If the full-scale range is
±
G. V
IN then R
1
= (G - 1). R
2
and
R
1
= G. R
3
fulfil the required conditions.
To match the ladder resistance, R
1
/R
2
/R
3
(=R
IN
) = 4k.
Thus the nominal values of R
1
, R
2
, R
3
are given by R
1
= 8 Gk
,
R
2
= 8G/(G - 1)k, R
3
= 8k
.
A bipolar range of
±
V
REF
IN (which corresponds to the basic
unipolar range 0 to +V
REF
IN) results if R
1
= R
3
= 8k
and R
2
=
∞
.
Assuming the V
= 2.5V the nominal values of resistors for
±
5 and
±
10V input ranges are given in the following table.
R
2
16k
10.66k
R
1
16k
32k
G
2
4
Input range
+5V
+10V
Minus full-scale (offset) is set by adjusting R
about its nominal
value relative to R
3
. Plus full-scale (gain) is set by adjusting R
2
relative to R
1
.
Practical circuit realisations are given in Fig.17.
R
3
8k
8k
Note that in the
±
5V case R
has been chosen as 7.5k (instead
of 8.2k) to obtain a more symmetrical range of adjustment
using standard potentiometers.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZN427J-8 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| ZN427J8DC | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| ZN427J8 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVPS00; No. of Contacts:4; Connector Shell Size:21; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| ZN428 | 8-BIT LATCHED INPUT D-A CONVERTER |
| ZN428J8DC | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZN427J8 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:MICROPROCESSOR COMPATIBLE 8-BIT SUCCESSIVE APPROXIMATION A-D CONVERTER |
| ZN427J-8 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ZN427J8DC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ZN428 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT LATCHED INPUT D-A CONVERTER |
| ZN428D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT LATCHED INPUT D-A CONVERTER |
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