- 您现在的位置：买卖IC网 > PDF目录16317 > ADM2914-1ARQZ (Analog Devices Inc)IC MONITOR 4CH UV/OV 16-QSOP PDF资料下载
参数资料
| 型号： | ADM2914-1ARQZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR 4CH UV/OV 16-QSOP |
| 标准包装： | 98 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 6 ms |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
| 产品目录页面： | 799 (CN2011-ZH PDF) |
Data Sheet
ADM2914
R Y + R Z
V PH = V UV ? ?
? = 0 . 5 V
? R X + R Y + R Z
?
( 0 . 5 ) ( V M )
( V UV )( I M )
MONITORING PIN CONNECTIONS
Positive Voltage Monitoring Scheme
When monitoring a positive supply, the desired nominal
operating voltage for monitoring is denoted by V M , I M is the
nominal current through the resistor divider, V OV is the
overvoltage trip point, and V UV is the undervoltage trip point.
V M
R X ADM2914
V PH
To trigger the undervoltage condition, the high-side voltage,
V PH , must exceed the 0.5 V threshold on the VHx pin. The
high-side voltage, V PH , is given by the following equation:
? ?
?
Because R Z is already known, R Y can be expressed as follows:
R Y = ? R Z
(2)
( V M )
( I M )
R Y
V PL
R Z
VHx
VLx
0.5V
UVx
OVx
When R Y and R Z are known, R X is calculated using the following
equation:
R X = ? R Z ? R Y (3)
If V M , I M , V OV , or V UV changes, each step must be recalculated.
Figure 17. Positive Undervoltage/Overvoltage Monitoring Configuration
tion. Three external resistors, R X , R Y , and R Z , divide the positive
voltage for monitoring, V M , into high-side voltage, V PH , and
low-side voltage, V PL . The high-side voltage is connected to the
corresponding VHx pin, and the low-side voltage is connected
Negative Voltage Monitoring Scheme
voltage monitoring. To monitor the negative voltage, a 1 V
reference voltage is required to connect to the end node of the
voltage divider circuit. This reference voltage is generated
internally and is output through the REF pin.
to the corresponding VLx pin.
To trigger an overvoltage condition, the low-side voltage (in this
R Z
REF
ADM2914
case, V PL ) must exceed the 0.5 V threshold on the VLx pin. The
low-side voltage, V PL , is given by the following equation:
V NH
VHx
OVx
R Z
V PL = V OV ? ?
?
? = 0 . 5 V
Also,
?
? R X + R Y + R Z
?
?
R Y
V NL
R X
VLx
0.5V
UVx
R X + R Y + R Z = M
( 0 . 5 ) ( V M )
( V OV )( I M )
V
I M
Therefore, R Z , which sets the desired trip point for the
overvoltage monitor, is calculated using the following equation:
R Z = (1)
V M
Figure 18. Negative Undervoltage/Overvoltage Monitoring Configuration
Scheme section need some minor modifications for use with
negative voltage monitoring. The 1 V reference voltage is added
to the overall voltage drop; it must therefore be subtracted from
V M , V UV , and V OV before using each in the previous equations.
To monitor a negative voltage level, the resistor divider circuit
divides the voltage differential level between the 1 V reference
voltage and the negative supply voltage into high-side voltage,
V NH , and low-side voltage, V NL . Similar to the positive voltage
monitoring scheme, the high-side voltage, V NH , is connected to
the corresponding VH X pin, and the low-side voltage, V NL , is
connected to the corresponding VL X pin. Refer to the Voltage
Monitoring Example section for more information.
Rev. C | Page 9 of 16
相关PDF资料 |
PDF描述 |
|---|---|
| 2-6754412-5 | CA,XG,MTRJ-SC |
| LTC2902-1CGN#PBF | IC MONITOR SUPPLY QUAD 16-SSOP |
| RMC08DRTS | CONN EDGECARD 16POS DIP .100 SLD |
| EMA10DTBT | CONN EDGECARD 20POS R/A .125 SLD |
| ECA24DTBN | CONN EDGECARD 48POS R/A .125 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM2914-1ARQZ-RL7 | 功能描述:IC MONITOR 4CH UV/OV 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM2914-1SRQZEP | 功能描述:IC VOLT SUP QUAD UV/OV 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM2914-1SRQZEP-R7 | 功能描述:IC VOLT SUP QUAD UV/OV 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM2914-2ARQZ | 功能描述:IC MONITOR 4CH UV/OV 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6717 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:2 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:1.11V，3.075V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 产品目录页面:1194 (CN2011-ZH PDF) 其它名称:497-7019-6 |
| ADM2914-2ARQZ | 制造商:Analog Devices 功能描述:IC, VOLT SUPERVISOR 100 uA, 6.9V, QSOP-1 |
发布紧急采购，3分钟左右您将得到回复。