22 FN6548.6 November 22, 2013 Overall Accuracy (VOA %)
參數(shù)資料
型號(hào): ISL28006FHADJZ-T7A
廠商: Intersil
文件頁(yè)數(shù): 15/26頁(yè)
文件大?。?/td> 0K
描述: IC AMP CURRENT SENSE SOT23-6
應(yīng)用說(shuō)明: ISL28005/06 Application Note
產(chǎn)品培訓(xùn)模塊: ISL28005-6 Overview
Solutions for Test and Measurement Equipment
Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝: 1
放大器類型: 電流檢測(cè)
電路數(shù): 1
轉(zhuǎn)換速率: 0.67 V/µs
-3db帶寬: 237kHz
電流 - 輸入偏壓: 4.7µA
電壓 - 輸入偏移: 1200µV
電流 - 電源: 50µA
電流 - 輸出 / 通道: 8.7mA
電壓 - 電源,單路/雙路(±): 2.7 V ~ 28 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-6
供應(yīng)商設(shè)備封裝: SOT-23-6
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: ISL28006FHADJZ-T7ADKR
ISL28006
22
FN6548.6
November 22, 2013
Overall Accuracy (VOA %)
VOA is defined as the total output accuracy Referred-to-Output
(RTO). The output accuracy contains all offset and gain errors, at
a single output voltage. Equation 4 is used to calculate the %
total output accuracy.
where
VOUT Actual = VSENSE x GAIN
Example: Gain = 100, For 100mV VSENSE input we measure
10.1V. The overall accuracy (VOA) is 1% as shown in Equation 5.
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 using Equation 6:
where:
PDMAXTOTAL is the sum of the maximum power dissipation of
each amplifier in the package (PDMAX)
PDMAX for each amplifier can be calculated using Equation 7:
where:
TMAX = Maximum ambient temperature
θJA = Thermal resistance of the package
PDMAX = Maximum power dissipation of 1 amplifier
VCC = Total supply voltage
IqMAX = Maximum quiescent supply current of 1 amplifier
VOUTMAX = Maximum output voltage swing of the application
RL = Load resistance
FIGURE 80. TYPICAL APPLICATION CIRCUIT
gmHI
gmLO
1.35V
+
-
VCC
ADJ
OPTION
ONLY
I = 2.86A
GND
RS
RS-
RP
(1m
TO
0.1)
0.1VDC
TO
28VDC
+
-
CD
LOAD
CM
2.7VDC
TO
28VDC
RS+
FB
OUT
FIXED GAIN
OPTION
ONLY
VOA
100
VOUTactual VOUT
ected
exp
VOUT
ected
exp
------------------------------------------------------------------------------
×
=
(EQ. 4)
(EQ. 5)
VOA
100
10.1 10
10
-------------------------
×
1%
==
TJMAX
TMAX θJAxPDMAXTOTAL
+
=
(EQ. 6)
PDMAX
VS IqMAX VS
(
- VOUTMAX)
VOUTMAX
RL
------------------------
×
+
×
=
(EQ. 7)
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