- 您现在的位置：买卖IC网 > PDF目录2064 > ADCMP671-1YUJZ-RL7 (Analog Devices Inc)IC MONITOR UV/OV LP ADJ 6TSOT PDF资料下载
参数资料
| 型号： | ADCMP671-1YUJZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR UV/OV LP ADJ 6TSOT |
| 标准包装： | 1 |
| 类型： | 通用 |
| 元件数： | 1 |
| 输出类型： | 开路漏极 |
| 电压 - 电源，单路/双路(±)： | 1.7 V ~ 5.5 V |
| 电流 - 输入偏压（最小值）： | 2.5nA |
| 电流 - 静态（最大值）： | 11µA |
| 传输延迟（最大）： | 10µs |
| 磁滞： | 9.2mV |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 安装类型： | 表面贴装 |
| 包装： | 标准包装 |
| 其它名称： | ADCMP671-1YUJZ-RL7DKR |
ADCMP671
Data Sheet
Rev. 0 | Page 14 of 16
APPLICATIONS INFORMATION
The ADCMP671 is a UV and OV monitor with a built-in 400 mV
reference that operates from 1.7 V to 5.5 V. The comparator is
0.275% accurate with a built-in hysteresis of 9.2 mV. The outputs
are open-drain, capable of sinking 40 mA.
COMPARATORS AND INTERNAL REFERENCE
There are two comparators inside the ADCMP671. The
comparator with its noninverting input connected to the INH
pin (and its inverting input connected internally to the 400 mV
reference) is for undervoltage detection, and the comparator
with its inverting input available through the INL pin (and its
noninverting input connected internally to the 400 mV reference)
is for overvoltage detection. The rising input threshold voltage of
the comparators is designed to be equal to that of the reference.
POWER SUPPLY
The ADCMP671 is designed to operate from 1.7 V to 5.5 V.
A 0.1 μF decoupling capacitor is recommended between VDD
and GND.
INPUTS
The comparator inputs are limited to the maximum VDD voltage
range. The voltage on these inputs can be more than VDD but never
more than the maximum allowed VDD voltage. When adding a
resistor string to the input, choose resistor values carefully because
the input bias current is in parallel with the bottom resistor of
the string. Therefore, choose the bottom resistor first to control
the error introduced by the bias current.
To minimize the number of external components use three
resistor dividers to program the UV and OV thresholds.
HYSTERESIS
To prevent oscillations at the output caused by noise or slowly
moving signals passing the switching threshold, each comparator
has a built-in hysteresis of approximately 8.9 mV.
VOLTAGE MONITORING SCHEME
When monitoring a supply rail, the desired nominal operating
voltage for monitoring is denoted by VM, IM is the nominal current
through the resistor divider, VOV is the overvoltage trip point,
and VUV is the undervoltage trip point.
Figure 34 illustrates the voltage monitoring input connection.
Three external resistors, RX, RY, and RZ, divide the positive voltage
for monitoring (VM) into the high-side voltage (VH) and low-
side voltage (VL). The high-side voltage is connected to the INH
pin, and the low-side voltage is connected to the INL pin.
INH
UV
OV
INL
VDD
GND
12V
RX
RY
RZ
5V
400mV
ADCMP671
PWRGD
OV
101
60-
034
Figure 34. Undervoltage/Overvoltage Monitoring Configuration
To trigger an overvoltage condition, the low-side voltage (in this
case, VL) must exceed the 0.4 V threshold on the INL pin. The
low-side voltage, VL, is given by the following equation:
V
4
.
0
=
+
=
Z
Y
X
Z
OV
L
R
V
Also,
M
Z
Y
X
I
V
R
=
+
Therefore, RZ, which sets the desired trip point for the overvoltage
monitor, is calculated using the following equation:
( )
()()
M
OV
M
Z
I
V
R
)
4
.
0
(
=
To trigger the undervoltage condition, the high-side voltage, VH,
must fall below the 0.4 V threshold on the INH pin. The high-
side voltage, VH, is given by the following equation:
V
4
.
0
=
+
=
Z
Y
X
Z
Y
UV
H
R
V
Because RZ is already known, RY can be expressed as follows:
( )
()() Z
M
UV
M
Y
R
I
V
R
=
)
4
.
0
(
When RY and RZ are known, RX is calculated using the following
equation:
( )
()
Y
Z
M
X
R
I
V
R
=
If VM, IM, VOV, or VUV changes each step must be recalculated.
相关PDF资料 |
PDF描述 |
|---|---|
| ADD8506WRUZ-REEL | IC GAMMA BUFFER LCD 6CH 24TSSOP |
| ADD8704ARUZ-REEL | IC OPAMP LCD QUAD 16V 14-TSSOP |
| ADD8710ARUZ | IC GAMMA BUFFER 10CH DRV 28TSSOP |
| ADDI7004BBCZ | IC PROCESSOR CCD SIGNAL 76BGA |
| ADDI7100BCPZRL | IC PROCESSOR CCD SIGNAL7 32LFCSP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADCMP671-1YUJZ-RL7 | 制造商:Analog Devices 功能描述:MONITOR, VOLTAGE, 6.5UA, 5.5V, TSOT-6 |
| ADCNH-2P | 功能描述:电缆组件 Wire Harness for AD Series, 2 Pin RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red |
| ADCNH-6P | 功能描述:电缆组件 Wire Harness for FX Series, 6 Pin RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red |
| ADCNH-8P | 功能描述:电缆组件 Wire Harness for AD Series, 8 Pin RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red |
| AD-CO8PCN | 制造商:BOTHHAND 制造商全称:Bothhand USA, LP. 功能描述:ADSL POTS SPLITTER MODULE |
发布紧急采购，3分钟左右您将得到回复。