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参数资料
| 型号： | LM4140BCMX-2.0/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.048 V, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 10/15页 |
| 文件大小： | 881K |
| 代理商： | LM4140BCMX-2.0/NOPB |
LM4140
Electrical Charateristics (Continued)
Unless otherwise specified, V
IN = 3.0V for the LM4140-1.024 and LM4140-1.250, VIN = 5.0V for all other voltage options, VEN
=V
IN.COUT = 1F (Note 4), ILOAD = 1mA, TA =TJ = 25C. Limits with standard typeface are for TA = 25C, and limits in bold-
face type apply over 0C to 70C temperature range.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Operating
Voltage
LM4140-1.024,
LM4140-1.250
I
L =1mAto8mA
1.8
5.5
V
IN-VREF
Dropout Voltage (Note 9)
LM4140-2.048,
LM4140-2.500
I
L =1mA
20
40
45
mV
I
L = 8 mA
160
235
400
LM4140-4.096
I
L =1mA
20
40
45
I
L = 8 mA
195
270
490
V
N
Output Noise Voltage (Note
0.1 Hz to 10 Hz
2.2
V
PP
I
S(ON)
Supply Current
I
LOAD =0mA
A
All other voltage options
230
320
375
4.096V Option
265
350
400
I
S(OFF)
Supply Current
V
Enable < 0.4V
.01
1
A
V
H
Logic High Input Voltage
0.8V
IN
V
I
H
Logic High Input Current
2
nA
V
L
Logic Low Input Voltage
0.4
V
I
L
Logic Low Input Current
1
nA
I
SC
Short Circuit Current
8.5
20
35
40
mA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed
test conditions.
Note 2: Without PCB copper enhancements. The maximum power dissipation must be de-rated at elevated temperatures and is limited by TJMAX (maximum
junction temperature),
θJ-A (junction to ambient thermal resistance) and TA (ambient temperature). The maximum power dissipation at any temperature is: PDissMAX
=(TJMAX TA)/θJ-A up to the value listed in the Absolute Maximum Ratings. The θJ-A for the SO-8 package is 160C/W.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin.
Note 4: For proper operation, a 1F capacitor is required between the output pin and the GND pin of the device. (See Application Section for details)
Note 5: Typical numbers are at 25C and represent the most likely parametric norm.
Note 6: Limits are 100% production tested at 25C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 7: High temperature and mechanical stress associated with PCB assembly can have significant impact on the initial accuracy of the LM4140 and may create
significant shifts in VREF. See Application Hints section regarding accuracy and PCB layout consideration.
Note 8: Thermal hysteresis is defined as the changes in +25C output voltage before and after the cycling of the device from 0C to 70C.
Note 9: Dropout voltage is defined as the minimum input to output differential voltage at which the output voltage drops by 0.5% below the value measured with
VIN = 3.0V for the LM4140-1.024 and LM4140-1.250, VIN = 5.0V for all other voltage options.
Note 10: The output noise is based on 1.024V option. Output noise is linearly proportional to VREF.
LM4140
www.national.com
4
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|---|---|
| LM4140ACMX-1.0/NOPB | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.024 V, PDSO8 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4140BCMX-4.1 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4140BCMX-4.1/NOPB | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4140CCM-1.0 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4140CCM-1.0/NOPB | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4140CCM-1.2 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
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