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参数资料
| 型号： | LT1460FCMS8-5#TR1460 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, PDSO8 |
| 封装： | PLASTIC, MSOP-8 |
| 文件页数： | 7/24页 |
| 文件大小： | 509K |
| 代理商： | LT1460FCMS8-5#TR1460 |
LT1460
15
1460f
APPLICATIO S I FOR ATIO
WU
U
Longer Battery Life
Series references have a large advantage over older shunt
style references. Shunt references require a resistor from
the power supply to operate. This resistor must be chosen
to supply the maximum current that can ever be demanded
by the circuit being regulated. When the circuit being
controlled is not operating at this maximum current, the
shunt reference must always sink this current, resulting
in high dissipation and short battery life.
The LT1460 series reference does not require a current set-
ting resistor and can operate with any supply voltage from
VOUT + 0.9V to 20V. When the circuitry being regulated does
not demand current, the LT1460 reduces its dissipation and
battery life is extended. If the reference is not delivering load
current it dissipates only a few mW, yet the same congura-
tion can deliver 20mA of load current when demanded.
Capacitive Loads
The LT1460 is designed to be stable with capacitive loads.
With no capacitive load, the reference is ideal for fast set-
tling, applications where PC board space is a premium,
or where available capacitance is limited.
The test circuit for the LT1460-2.5 shown in Figure 1 is
used to measure the response time for various load cur-
rents and load capacitors. The 1V step from 2.5V to 1.5V
produces a current step of 1mA or 100A for RL = 1k or
RL = 10k. Figure 2 shows the response of the reference
with no load capacitance.
The reference settles to 2.5mV (0.1%) in less than 1s
for a 100A pulse and to 0.1% in 1.5s with a 1mA step.
When load capacitance is greater than 0.01F, the refer-
ence begins to ring due to the pole formed with the output
impedance. Figure 3 shows the response of the reference
to a 1mA and 100A load current step with a 0.01F load
capacitor. The ringing can be greatly reduced with a DC
load as small as 200A. With large output capacitors, ≥
Figure 5. Effect of RS for CL = 1F
Figure 1. Response Time Test Circuit
Figure 2. CL = 0
Figure 3. CL = 0.01F
Figure 4. Isolation Resistor Test Circuit
LT1460-2.5
RL
VOUT
VGEN
1460 F01
CIN
0.1
F
2.5V
1.5V
CL
VIN = 5V
LT1460-2.5
RL
VGEN
1460 F04
CIN
0.1
F
2.5V
1.5V
CL
VIN = 5V
VOUT
RS
1
s/DIV
2.5V
1.5V
RL = 10k
RL = 1k
1460 F02
VGEN
VOUT
20
s/DIV
VGEN
VOUT
2.5V
1.5V
RL = 10k
RL = 1k
1460 F03
0.1ms/DIV
2.5V
1.5V
RL = 1k
RS = 0
RL = 1k
RS = 2
1460 F05
VGEN
VOUT
1F, the ringing can be reduced with a small resistor in
series with the reference output as shown in Figure 4.
Figure 5 shows the response of the LT1460-2.5 with a
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1460FCMS8-5-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Precision Series Reference Family |
| LT1460GCZ-10 | 功能描述:IC VREF SERIES PREC 10V TO-92-3 RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 产品培训模块:Voltage Reference Basics 标准包装:100 系列:- 基准类型:旁路，精度 输出电压:4.096V 容差:±0.075% 温度系数:50ppm/°C 输入电压:- 通道数:1 电流 - 阴极:1µA 电流 - 静态:- 电流 - 输出:10mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 |
| LT1460GCZ-10#PBF | 功能描述:IC VREF SERIES PREC 10V TO-92-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 产品培训模块:Voltage Reference Basics 标准包装:100 系列:- 基准类型:旁路，精度 输出电压:4.096V 容差:±0.075% 温度系数:50ppm/°C 输入电压:- 通道数:1 电流 - 阴极:1µA 电流 - 静态:- 电流 - 输出:10mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 |
| LT1460GCZ-10#TR | 功能描述:IC VREF SERIES PREC 10V TO-92-3 RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 产品培训模块:Voltage Reference Basics 标准包装:100 系列:- 基准类型:旁路，精度 输出电压:4.096V 容差:±0.075% 温度系数:50ppm/°C 输入电压:- 通道数:1 电流 - 阴极:1µA 电流 - 静态:- 电流 - 输出:10mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 |
| LT1460GCZ-10#TRPBF | 功能描述:IC VREF SERIES PREC 10V TO-92-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 产品培训模块:Voltage Reference Basics 标准包装:100 系列:- 基准类型:旁路，精度 输出电压:4.096V 容差:±0.075% 温度系数:50ppm/°C 输入电压:- 通道数:1 电流 - 阴极:1µA 电流 - 静态:- 电流 - 输出:10mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 |
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