參數(shù)資料
型號(hào): ISL28470FAZ-T7A
廠商: Intersil
文件頁(yè)數(shù): 9/18頁(yè)
文件大小: 0K
描述: IC OPAMP INST RRIO QUAD 28QSOP
標(biāo)準(zhǔn)包裝: 250
放大器類型: 儀表
電路數(shù): 4
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 0.5 V/µs
-3db帶寬: 240kHz
電流 - 輸入偏壓: 250pA
電壓 - 輸入偏移: 35µV
電流 - 電源: 260µA
電流 - 輸出 / 通道: 29mA
電壓 - 電源,單路/雙路(±): 2.4 V ~ 5.5 V,±1.2 V ~ 2.75 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 28-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 28-QSOP
包裝: 帶卷 (TR)
17
FN6260.6
October 21, 2009
Power Dissipation
It is possible to exceed the +150°C maximum junction
temperatures under certain load and power-supply
conditions. It is therefore important to calculate the
maximum junction temperature (TJMAX) for all applications
to determine if power supply voltages, load conditions, or
package type need to be modified to remain in the safe
operating area. These parameters are related in Equation 7:
where:
PDMAXTOTAL is the sum of the maximum power
dissipation of each amplifier in the package (PDMAX)
PDMAX for each amplifier can be calculated as shown in
Equation 8:
where:
TMAX = Maximum ambient temperature
θJA = Thermal resistance of the package
PDMAX = Maximum power dissipation of 1 amplifier
VS = Supply voltage (Magnitude of V+ and V-)
IMAX = Maximum supply current of 1 amplifier
VOUTMAX = Maximum output voltage swing of the
application
RL = Load resistance
T
JMAX
T
MAX
θ
JA xPDMAXTOTAL
()
+
=
(EQ. 7)
PD
MAX
2*V
S
I
SMAX
V
S
(
- V
OUTMAX )
V
OUTMAX
R
L
----------------------------
×
+
×
=
(EQ. 8)
ISL28270, ISL28273, ISL28470
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