参数资料
型号: ISL28270IAZ
厂商: Intersil
文件页数: 9/18页
文件大小: 0K
描述: IC INSTR AMP RRIO DUAL 16-QSOP
标准包装: 97
放大器类型: 仪表
电路数: 2
输出类型: 满摆幅
转换速率: 0.5 V/µs
-3db带宽: 240kHz
电流 - 输入偏压: 500pA
电压 - 输入偏移: 35µV
电流 - 电源: 120µA
电流 - 输出 / 通道: 29mA
电压 - 电源,单路/双路(±): 2.4 V ~ 5.5 V,±1.2 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-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 管件
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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