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參數(shù)資料
| 型號： | MAX181BEPL |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | Complete, 8-Channel, 12-Bit Data-Acquisition Systems |
| 中文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 263K |
| 代理商： | MAX181BEPL |
M
Network Interface Card Smart Regulator
_______________________________________________________________________________________
7
Thermal overload protection safeguards the MAX1810
in the event of fault conditions. For continuous opera-
tion, do not exceed the absolute maximum junction-
temperature rating of T
J
= +150
°
C.
Both the MAIN and STBY regulators also feature over-
current protection nominally at 900mA. The AUX switch
is not current limited.
Operating Region and Power Dissipation
Maximum power dissipation of the MAX1810 depends
on the thermal resistance of the case and circuit board,
the temperature difference between the die junction
and ambient air, and the rate of airflow. The power dis-
sipation of the device is P = I
OUT
(V
IN
–
V
OUT
). The
resulting maximum power dissipation is:
P
MAX
= ((T
J(MAX)
–
T
A
) / (
θ
JC
+
θ
CA
))
where T
J(MAX)
is the maximum junction temperature
(150
°
C) and T
A
is the ambient temperature,
θ
JC
is the
thermal resistance from the die junction to the package
case, and
θ
CA
is the thermal resistance from the case
through the PC board, copper traces, and other materi-
als to the surrounding air (Figure 3). For optimum
power dissipation, use a large ground plane with good
thermal contact to pins 5 through 8. For multilayer
boards, multiple vias are recommended.
Applications Information
Capacitor Selection
The MAX1810 requires a 1μF ceramic bypass capaci-
tor at OUT to maintain regulator stability (Figure 4).
When switching between input supplies, the MAX1810
may cause a voltage disturbance on either the MAIN or
STBY input. Limit this disturbance to below the hystere-
sis level (150mV) to guarantee precise switchover. If
the MAIN and STBY input supplies do not have filter
capacitance of their own near the MAX1810 inputs,
then bypass capacitors (2.2μF is recommended) may
be needed at MAIN and STBY. If the input supplies to
MAIN and STBY already have greater than 2.2μF of out-
put capacitance, then no additional capacitance is
required. Place input and output filter capacitors as
close to the device as possible to minimize the effect of
lead inductance of the PC board traces.
Chip Information
TRANSISTOR COUNT: 811
PROCESS: BiCMOS
OUT
+3.3V, 500mA
C
OUT
1.0μF
+5V MAIN
INPUT
+5V STBY
INPUT
+3.3V AUX
INPUT
MAX1810
MAIN
OUT
STBY
AUX
GND
2.2μF
2.2μF
0.1μF
*
*
*
*REQUIRED ONLY IF INPUT SUPPLIES DO NOT HAVE NEARBY OUTPUT CAPACITANCE.
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
3.5
4.0
4.5
5.0
5.5
6.0
SUPPLY VOLTAGE (V)
M
MAXIMUM CONTINUOUS CURRENT LIMIT
T
U
T
A
= +70
°
C
T
A
= +50
°
C
T
A
= +80
°
C
T
J(MAX)
= +150
°
C
Figure 3. Power Operating Region: Maximum Output Current
vs. Supply Voltage
Figure 4. Typical Application Circuit
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|---|---|
| MAX181BEPL+ | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) 12-Bit 6Ch 100ksps 5.08V- Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX181BEQH+D | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) 12-Bit 6Ch 100ksps 5.08V- Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX181BEQH+TD | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) 12-Bit 6Ch 100ksps 5.08V- Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX181BEQH-D | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX181BEQH-TD | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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