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ADM6710FARJZ-REEL7 PDF预览

ADM6710FARJZ-REEL7

更新时间: 2024-02-15 01:06:30
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管监控
页数 文件大小 规格书
8页 184K
描述
Low Voltage, High Accuracy, Quad Voltage UP Supervisory Circuit

ADM6710FARJZ-REEL7 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:LSSOP, TSOP6,.11,37针数:6
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.09
可调阈值:YES模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-PDSO-G6JESD-609代码:e3
长度:2.9 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:6最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:LSSOP封装等效代码:TSOP6,.11,37
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260电源:1/5.5 V
认证状态:Not Qualified座面最大高度:1.45 mm
子类别:Power Management Circuits最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):1.2 V标称供电电压 (Vsup):3 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:1.6 mm
Base Number Matches:1

ADM6710FARJZ-REEL7 数据手册

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ADM6710  
Preliminary Technical Data  
THEORY OF OPERATION  
V
INTH  
The ADM6710 is a compact, low power supervisory circuit  
capable of monitoring up to four voltages in multivoltage  
applications. If a monitored power supply voltage falls below the  
minimum voltage threshold, a single active low output asserts,  
triggering a system reset.  
R1  
R2  
V
= 0.62V  
REF  
The ADM6710 includes several voltage threshold options for  
monitoring 5.0 V, 3.3 V, 3.0 V, 2.5 V and 1.8 V supplies. It also  
provides up to three adjustable thresholds for monitoring  
voltages down to 0.62 V. See the Ordering Guide section for a  
list and description of all options available.  
Figure 4. Setting the Adjustable Monitor  
The ADM6710Q contains an internal voltage clamp at each of  
the adjustable voltage inputs. Input voltages greater than 1.5 V  
induce a higher input current.  
The ADM6710 includes precision comparators, an accurate  
band gap reference, and a series of internally-trimmed resistor  
divider networks to set the factory-fixed reset threshold  
options. The resistor networks scale the specified INx reset  
voltages to match the internal band gap reference/comparator  
voltage.  
The ADM6710 is normally powered from the monitored IN2, or  
VCC in the case of the ADM6710Q. Monitored inputs are  
resistant to short power supply glitches. To increase noise  
immunity in noisy applications, place a 0.1 μF capacitor  
between the IN2 input and ground. Adding capacitance to IN1,  
IN3, and IN4 also improves noise immunity.  
Adjustable threshold options bypass the internal resistor  
networks and connect directly to one of the comparator inputs.  
External resistor divider networks must be used to scale  
voltages down for monitoring at the adjustable inputs. The  
ADM6710Q provides a separate unmonitored power supply  
input (VCC) and three adjustable voltage inputs.  
Do not allow unused monitor inputs to float or to be grounded.  
Connect these inputs to a supply voltage greater than their  
specified threshold voltages. In the case of unused INx  
adjustable inputs, limit the bias current by connecting a 1 MΩ  
series resistor between the unused input and IN2 (or VCC with  
the ADM6710Q).  
The internal comparators each typically have a hysteresis of  
0.3% with respect to its reset threshold. This built-in hysteresis  
improves the device’s immunity to ambient noise without  
noticeably reducing the threshold accuracy. The ADM6710 is  
unaffected by short input transients.  
RESET OUTPUT CONFIGURATION  
The ADM6710 has a reset timeout period of 200 ms (typical).  
The output is open drain with a weak internal pull-up to the  
monitored IN2 or VCC supply, typically 10 uA.  
In many applications that interface with other logic devices,  
there is no requirement for an external pull-up resistor. An  
external pull-up resistor to any voltage, ranging from 0 V to  
5.5 V, can overdrive the internal pull-up when interfacing to  
different logic supply voltages (see Figure 5). Reverse current  
flow from the external pull-up voltage to IN2 is prevented by  
the internal circuitry.  
ADM6710  
IN  
IN  
IN  
IN  
1
2
3
4
MONITORED  
SUPPLIES  
MICROPROCESSOR  
RESET  
GND  
Figure 3. Typical Applications Circuit  
IN =3.3V  
2
5V  
INPUT CONFIGURATION  
V
CC  
The ADM6710 provides numerous monitor choices with  
adjustable reset thresholds. Typically, the threshold voltage at  
each adjustable INx input is 0.62 V. To monitor a voltage greater  
than 0.62 V, connect a resistor divider network to the circuit as  
depicted in Figure 4, where  
100k  
ADM6710  
RESET  
RESET  
R1 + R2  
R2  
VINTH = 0.62 V  
Figure 5. Interface with a Different Logic Supply Voltage  
The ADM6710Q is powered by VCC, which is not a monitored  
voltage. All other ADM6710 options are powered by IN2, which  
is a monitored voltage. If a supply voltage drops below its  
associated threshold, the reset output asserts low and remains  
low while either IN1 or IN2 remains above 1.0 V.  
Rev. PrB | Page 6 of 8  

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