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参数资料
| 型号： | LM385PS-1.2 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PDSO8 |
| 封装： | SOP-8 |
| 文件页数： | 3/13页 |
| 文件大小： | 257K |
| 代理商： | LM385PS-1.2 |
Product Folder: LM385B-1.2, Micropower Voltage Reference
PRODUCT FOLDER | PRODUCT INFO: FEATURES | DESCRIPTION | DATASHEETS | PRICING/AVAILABILITY/PKG | SAMPLES
PRODUCT SUPPORT: APPLICATIONS
LM385B-1.2, Micropower Voltage Reference
DEVICE STATUS: ACTIVE
PARAMETER NAME
LM385B-1.2
VO (V)
1.235
Vout/Vref Initial Tol (%)
1
Min Iz for Regulation (uA)
10
Iout/Iz (max) (mA)
20
Temp Coeff (typ) (ppm/ degree C) 20
Output Topology
Shunt
FEATURES
q
Operating Current Range
r
LM285 . . . 10 uA to 20 mA
r
LM385 . . . 15 uA to 20 mA
r
LM385B ...15 uA to 20 mA
q
1% and 2% Initial Voltage Tolerance
q
Reference Impedance
r
LM385...1
Max at 25°C
r
All Devices . . . 1.5
Max Over Full Temperature Range
q
Very Low Power Consumption
q
Applications
r
Portable Meter References
r
Portable Test Instruments
r
Battery-Operated Systems
r
Current-Loop Instrumentation
r
Panel Meters
q
Designed to be Interchangeable With National LM285-1.2 and LM385-1.2
DESCRIPTION
These micropower, two-terminal, band-gap voltage references operate over a 10-uA to 20-mA current range and feature exceptionally low dynamic impedance and good temperature stability. On-
chip trimming provides tight voltage tolerance. The band-gap reference for these devices has low noise and long-term stability.
The design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most reference applications. The wide dynamic operating temperature range accommodates
varying current supplies, with excellent regulation.
The extremely low power drain of this series makes them useful for micropower circuitry. These voltage references can be used to make portable meters, regulators, or general-purpose analog
circuitry, with battery life approaching shelf life. The wide operating current range allows them to replace older references with tighter-tolerance parts.
The LM285-1.2 is characterized for operation from –40°C to 85°C. The LM385-1.2 and LM385B-1.2 are characterized for operation from 0°C to 70°C.
TECHNICAL DOCUMENTS
file:///H|/imaging/BITTING/cpl/20020930_1/09272002_10/TXII/09272002_HTML/lm385b-1.2.html (1 of 3) [Oct-03-2002 10:33:56 AM]
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| LM385PSR-1-2 | 功能描述:基准电压& 基准电流 Micropower Voltage Reference 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 |
| LM385PSRE4-1-2 | 功能描述:基准电压& 基准电流 Micropower Voltage Reference 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 |
| LM385PSRG4-1-2 | 功能描述:基准电压& 基准电流 MicroPwr Vltg Ref 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 |
| LM385PW-1-2 | 功能描述:基准电压& 基准电流 Micropower Voltage Reference 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 |
| LM385PW-2-5 | 功能描述:基准电压& 基准电流 Micropower Voltage Reference 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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