参数资料
型号: MCP660T-E/ML
厂商: Microchip Technology
文件页数: 15/68页
文件大小: 0K
描述: IC OPAMP TRIPLE 60MHZ 16QFN
标准包装: 3,300
放大器类型: 通用
电路数: 3
输出类型: 满摆幅
转换速率: 32 V/µs
增益带宽积: 60MHz
电流 - 输入偏压: 6pA
电压 - 输入偏移: 1800µV
电流 - 电源: 6mA
电流 - 输出 / 通道: 80mA
电压 - 电源,单路/双路(±): 2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-VQFN 裸露焊盘
供应商设备封装: 16-QFN(4x4)
包装: 带卷 (TR)
MCP660/1/2/3/4/5/9
DS22194D-page 22
2009-2012 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 example, the output voltage swings to within
50 mV of the negative rail with a 1 k
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 ±90 mA (typical), these op amps are capable of both
delivering and dissipating significant power.
FIGURE 4-5:
Diagram for Power
Calculations.
Figure 4-5 shows the power calculations used for a sin-
gle op amp:
RSER is 0 in most applications, and can be used
to limit IOUT.
VOUT is the op amp’s output voltage.
VL is the voltage at the load.
VLG is the load’s ground point.
VSS is usually ground (0V).
The input currents are assumed to be negligible. The
currents shown in Figure 4-5 can be approximated
EQUATION 4-1:
The instantaneous op amp power (POA(t)), RSER power
(PRSER(t)) and load power (PL(t)) are calculated in
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
(
TJA) and junction temperature (TJ) can be calculated
using POAmax, ambient temperature (TA), the package
thermal resistance (
JA – found in Table 1-4), and the
number of op amps in the package (assuming equal
power dissipations), as shown in Equation 4-4:
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
-120
-100
-8
0
-6
0
-4
0
-2
0
20
40
60
80
100
120
IOUT (mA)
V
OU
T(V
)
RL = 10
RL = 100
RL = 1 k
VOH Limited
VOL Limited
-I
SC
Li
m
ite
d
+I
SC
Li
m
ite
d
(VDD = 5.5V)
VDD
VL
RL
VLG
IDD
ISS
IL
IOUT
RSER
VOUT
VSS
MCP66X
VOUT – VLG
IOUT = IL =
RSER + RL
IDD IQ + max(0, IOUT)
ISS –IQ + min(0, IOUT)
Where:
IQ = quiescent supply current
POA(t) = IDD (VDD – VOUT) + ISS (VSS – VOUT)
PRSER(t) = IOUT2RSER
PL(t) = IL2RL
POAmax
max2(VDD – VLG, – VSS)
4(RSER + RL)
TJA = POA(t) JA n POAmaxJA
TJ = TA + TJA
Where:
n = number of op amps in package (1, 2)
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