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参数资料
| 型号： | TC1043 |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | Linear Building Block . Low Power Voltage Reference with Dual Op Amp, Dual Comparator, and Shutdown Mode |
| 中文描述： | 线性积木。低功耗电压参考与双路运算放大器，双比较，和关断模式 |
| 文件页数： | 5/20页 |
| 文件大小： | 508K |
| 代理商： | TC1043 |
2002 Microchip Technology Inc.
DS21347B-page 5
TC1043
3.0
DETAILED DESCRIPTION
The TC1043 is one of a series of very low power, linear
building block products targeted at low voltage, single
supply applications. The TC1043 minimum operating
voltage is 1.8V and typical supply current is only 20
μ
A
(fully enabled). It combines two comparators, two op
amps and a voltage reference in a single package. A
shutdown mode is incorporated for easy adaptation to
system power management schemes. During shut-
down, all but one comparator and the voltage reference
are disabled (i.e. powered down with their respective
outputs at high impedance). The “still awake” compar-
ator and voltage reference can be used as a wake-up
timer, power supply monitor, LDO controller or other
continuous duty circuit function.
3.1
Comparators
The TC1043 contains two comparators. The compara-
tors input range extends beyond both supply voltages
by 200mV and the outputs will swing to within several
millivolts of the supplies, depending on the load current
being driven.
The comparators exhibit a propagation delay and sup-
ply current which are largely independent of supply
voltage. The low input bias current and offset voltage
make them suitable for high impedance precision appli-
cations.
Comparator CMPTR1 is disabled during shutdown and
has a high impedance output. Comparator CMPTR2
remains active.
3.2
Operational Amplifiers
The TC1043 contains two rail-to-rail op amps. The
amplifiers’ input range extends beyond both supplies
by 200mV and the outputs will swing to within several
millivolts of the supplies depending on the load current
being driven.
The amplifier design is such that large signal gain, slew
rate and bandwidth are largely independent of supply
voltage. The low input bias current and offset voltage of
the TC1043 make it suitable for precision applications.
Both op amps are disabled during shutdown and have
high output impedance.
3.3
Voltage Reference
A 2.0% tolerance, internally biased, 1.20V bandgap
voltage reference is included in the TC1043. It has a
push-pull output capable of sourcing and sinking at
least 50
μ
A. The voltage reference remains fully
enabled during shutdown.
3.4
Shutdown Input
SHDN at V
IL
disables both op amps and one compara-
tor. The SHDN input cannot be allowed to float. When
not used, connect it to V
DD
. The disabled comparator’s
output and the two disabled op amp outputs are in a
high impedance state when shutdown is active. The
disabled comparator’s inputs and the two disabled op
amp inputs can be driven from rail-to-rail by an external
voltage when the TC1043 is in shutdown. No latch-up
will occur when the device is driven to its enabled state
when SHDN is set to V
IH
.
相关PDF资料 |
PDF描述 |
|---|---|
| TC1043CEQR | Linear Building Block . Low Power Voltage Reference with Dual Op Amp, Dual Comparator, and Shutdown Mode |
| TC1046 | High Precision Temperature-to-Voltage Converter |
| TC1046VNB | High Precision Temperature-to-Voltage Converter |
| TC1047 | Precision Temperature-to-Voltage Converter |
| TC1047VNB | Precision Temperature-to-Voltage Converter |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1043CEQR | 功能描述:校验器 IC VR/Op-Amp/Shtdwn RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| TC1043CEQRTR | 功能描述:校验器 IC VR/Op-Amp/Shtdwn RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| TC1044 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Charge Pump DC-TO-DC Voltage Converter |
| TC1044S | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Charge Pump DC-TO-DC Voltage Converter |
| TC1044SCOA | 功能描述:电荷泵 High Voltage RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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