參數(shù)資料
型號(hào)： MCP631-E/SN
元件分類： 運(yùn)算放大器
英文描述： OP-AMP, 8000 uV OFFSET-MAX, 24 MHz BAND WIDTH, PDSO8
封裝： 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8
文件頁(yè)數(shù)： 15/42頁(yè)
文件大小： 790K
代理商： MCP631-E/SN
MCP631/2/3/5
DS22197A-page 22
2009 Microchip Technology Inc.
4.2
Rail-to-Rail Output
4.2.1
MAXIMUM OUTPUT VOLTAGE
The Maximum Output Voltage (see Figure 2-16 and
Figure 2-17) describes the output range for a given
load. For instance, the output voltage swings to within
50 mV of the negative rail with a 1 k
Ω load tied to
VDD/2.
4.2.2
OUTPUT CURRENT
Figure 4-4 shows the possible combinations of output
voltage (VOUT) and output current (IOUT), when
VDD =5.5V. IOUT is positive when it flows out of the op
amp into the external circuit.
FIGURE 4-4:
Output Current.
4.2.3
POWER DISSIPATION
Since the output short circuit current (ISC) is specified
at ±70 mA (typical), these op amps are capable of both
delivering and dissipating significant power.
Figure 4-5 show the quantities used in the following
power calculations for a single op amp. RSER is 0 Ω in
most applications; it can be used to limit IOUT. VOUT is
the op amp’s output voltage, VL is the voltage at the
load, and VLG is the load’s ground point. VSS is usually
ground (0V). The input currents are assumed to be
negligible. The currents shown are approximately:
EQUATION 4-1:
FIGURE 4-5:
Diagram for Power
Calculations.
The instantaneous op amp power (POA(t)), RSER power
(PRSER(t)) and load power (PL(t)) are:
EQUATION 4-2:
The maximum op amp power, for resistive loads,
occurs when VOUT is halfway between VDD and VLG or
halfway between VSS and VLG:
EQUATION 4-3:
The maximum ambient to junction temperature rise
(
ΔTJA) and junction temperature (TJ) can be calculated
using POAmax, ambient temperature (TA), the package
thermal resistance (
θJA) found in Table 1-4, and the
number of op amps in the package (assuming equal
power dissipations):
EQUATION 4-4:
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-12
0
-10
0
-8
0
-6
0
-4
0
-2
0
20
40
60
80
10
0
12
0
IOUT (mA)
V
OU
T
(V)
RL = 10
RL = 100
RL = 1 k
VOH Limited
VOL Limited
-I
SC
L
imite
d
+I
SC
Lim
ited
(VDD = 5.5V)
VOUT –VLG
IOUT =IL =
RSER +RL
IDD ≈ IQ +max(0,IOUT)
ISS ≈ –IQ +min(0,IOUT)
Where:
IQ = quiescent supply current
VDD
VL
RL
VLG
IDD
ISS
IL
IOUT
RSER
VOUT
VSS
MCP63X
POA(t) = IDD (VDD –VOUT)+ISS (VSS –VOUT)
PRSER(t) = IOUT
2R
SER
PL(t) = IL
2R
L
POAmax ≤
max2(VDD –VLG ,VLG –VSS)
4(RSER +RL)
ΔT
JA =POA(t) θJA ≤ nPOAmaxθJA
TJ =TA + ΔTJA
Where:
n = number of op amps in package (1, 2)
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MCP631T-E/OT 功能描述:運(yùn)算放大器 - 運(yùn)放 Single 24MHz OP E temp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MCP631T-E/SN 功能描述:運(yùn)算放大器 - 運(yùn)放 Single 24MHz OP E temp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MCP632-E/MF 功能描述:運(yùn)算放大器 - 運(yùn)放 Dual 24MHz OP E temp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
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