参数资料
型号: ADM6339BARJZ-RL7
厂商: Analog Devices Inc
文件页数: 9/12页
文件大小: 0K
描述: IC MCU SUP 5/3.3/2.5/ADJ SOT23-6
标准包装: 1
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 140 ms
电压 - 阀值: 2.19V,3.08V,4.63V,可调
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
供应商设备封装: SOT-23-6
包装: 标准包装
其它名称: ADM6339BARJZ-RL7DKR
ADM6339
When monitoring a voltage more negative than ?0.5 V, a
scheme similar to that previously described in the Monitoring
Negative Voltages < ?5.0 V section is used. For an input
monitor current error of <1%, the resistor network current
should be ≥500 μA (for I IN4 = 5 μA maximum). Calculate R 1
based on the desired V INTH reset threshold voltage, using the
following equation:
R 1 = R 2 (( V INTH / V TH ) ? 1)
RESET is open drain with a weak internal pull-up to IN 2 of
10 μA (typical). Many applications that interface with other
logic devices do not require an external pull-up resistor.
However, if an external pull-up resistor is required and it is
connected to a voltage ranging from 0 V to 5.5 V, the resistor
overdrives the internal pull-up. Reverse current flow from the
external pull-up voltage to IN 2 is prevented by the internal
circuitry.
where V INTH is the desired threshold voltage and V TH is the
IN 2 = 3.3V
5V
internal threshold voltage, ?0.487 V (typical).
RESET OUTPUT CONFIGURATION
The RESET output asserts low if a monitored INx voltage
ADM6339
RESET
100k ?
V CC
RESET
drops below its voltage threshold (or goes above its associated
threshold in the case of the ?0.5 V and ?5.0 V input options).
After all voltages exceed their associated threshold level, the
reset signal remains low for the reset timeout period, t RP
(200 ms typical).
Figure 17. Interfacing with a Different Logic Supply Voltage
IN x
V TH
t RD
t RP
90%
RESET
10%
Figure 16. ADM6339 RESET Timing
Rev. A | Page 9 of 12
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