- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385552 > MAX8215 (Maxim Integrated Products, Inc.) Microprocessor Voltage Monitors(專用的微處理器電壓監(jiān)視器) PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX8215 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Microprocessor Voltage Monitors(專用的微處理器電壓監(jiān)視器) |
| 中文描述： | ±5V、±12V (±15V)專用微處理器電壓監(jiān)視器 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 184K |
| 代理商： | MAX8215 |
M
±5V, ±12V (±15V ) Dedic ated
Mic roproc essor Voltage Monitors
_______________________________________________________________________________________
9
absolute maximum ratings have no effect on the refer-
ence. Within the absolute maximum ratings, the DIN
input has no effect on the reference.
Power-S upply Bypassing and Grounding
In high-noise environments where the voltage connected
to V
DD
may change abruptly, the reference voltage may
“bounce,” causing false comparator outputs. Eliminate
this problem using Figure 8’s RC bypass network.
Although bypassing the reference may appear to help,
Figure 8’s solution is recommended; bypassing the ref-
erence reduces its voltage change, but doing so caus-
es a time delay prior to the reference voltage returning
to its correct level.
Eliminating Output Osc illation when
Using the Auxiliary Comparator
Although hysteresis is built into the auxiliary comparator,
output oscillation problems are still possible. Oscillation
can occur when a comparator’s output couples back to
its inverting input through stray board capacitance.
Make sure the board trace leading from the comparator
output does not pass near its inverting input (or vice
versa). Also, reducing the resistance connected to DIN
reduces its susceptibility to picking up output signals. In
most cases, using input resistor values on the order of
100k
creates no problem. Since using lower resistor
values increases the supply current, another approach
is to bypass the input resistors as shown in Figure 9,
although this slows the circuit’s response. When much
larger valued input resistors are used, high valued resis-
tors on the output should be used.
When DOUT is required to sink larger currents (i.e.,
when smaller pull-up resistor values are used), oscilla-
tion problems are more likely to occur. To minimize
power consumption and to optimize stability, use the
largest value pull-up resistor feasible for the output
drive required. When lower pull-up resistor values are
used, lower values for the resistors connected to the
inputs can help alleviate oscillation problems.
MAX8215
MAX8216
14
V
DD
8
PGND
0.1
μ
F
OUT1
DOUT
7
13
9
RESET
3
2
+V
S
GND
+5V
DIN
+5V
680k
680k
1
μ
F
1k
Figure 7. Microprocessor Reset Circuit Monitoring Its Own
Supply Voltage
MAX8215
MAX8216
13
OUT1
14
V
DD
V+
1k
0.1
μ
F
Figure 8. Alternate Bypass Scheme
MAX8215
MAX8216
9
DOUT
7
DIN
V
IN
Figure 9. Alternative Means for Reducing Impedance Level
Seen at DIN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX824L | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限4.63V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824M | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限4.38V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824R | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限2.63V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824S | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限2.93V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824T | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限3.08V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8215_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors |
| MAX8215C/D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:【5V, 【12V (【15V) Dedicated Microprocessor Voltage Monitors |
| MAX8215CPD | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX8215CPD+ | 功能描述:監(jiān)控電路 5/12/15V +/-Dedictd MPU Voltage Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX8215CSD | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。