- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄385490 > LM9140BYZ-10.0 (NATIONAL SEMICONDUCTOR CORP) Precision Micropower Shunt Voltage Reference PDF資料下載
參數(shù)資料
| 型號(hào)： | LM9140BYZ-10.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Precision Micropower Shunt Voltage Reference |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 10 V, PBCY3 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 192K |
| 代理商： | LM9140BYZ-10.0 |
Functional Block Diagram
Applications Information
The LM9140 is a precision micro-power curvature-corrected
bandgap shunt voltage reference. The LM9140 has been de-
signed for stable operation without the need of an external
capacitor connected between the “+” pin and the “” pin. If,
however, a bypass capacitor is used, the LM9140 remains
stable. Reducing design effort is the availability of several
fixed reverse breakdown voltages: 2.500V, 4.096V, 5.000V,
and 10.000V. The minimum operating current increases from
60 μA for the LM9140-2.5 to 100 μA for the LM9140-10.0. All
versions have a maximum operating current of 15 mA.
The 4.096V version allows single +5V 12-bit ADCs or DACs
to operate with an LSB equal to 1 mV. For 12-bit ADCs or
DACs that operate on supplies of 10V or greater, the 8.192V
version gives 2 mV per LSB.
In a conventional shunt regulator application (Figure 1), an
external series resistor (R
S
) is connected between the sup-
Typical Applications
ply voltage and the LM9140. R
determines the current that
flows through the load (I
) and the LM9140 (I
). Since load
current and supply voltage may vary, R
should be small
enough to supply at least the minimum acceptable I
to the
LM9140 even when the supply voltage is at its minimum and
the load current is at its maximum value. When the supply
voltage is at its maximum and I
is at its minimum, R
should
be large enough so that the current flowing through the
LM9140 is less than 15 mA.
R
is determined by the supply voltage, (V
), the load and
operating current, (I
L
and I
Q
), and the LM9140’s reverse
breakdown voltage, V
R
.
DS011393-12
DS011393-20
FIGURE 1. Shunt Regulator
7
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM9140 | Precision Micropower Shunt Voltage Reference |
| LM92CIM | 【0.33∑C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
| LM92 | 【0.33∑C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
| LM92CIMX | 【0.33∑C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
| LM94021 | Multi-Gain Analog Temperature Sensor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9140BYZ-4.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM9140BYZ-5.0 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM91DIMQA | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Diode Input Digital Temperature Sensor with Two-Wire Interface |
| LM91DIMQAX | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Diode Input Digital Temperature Sensor with Two-Wire Interface |
| LM92 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:【0.33∑C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。