參數(shù)資料
型號(hào): LT6105IDCB#TRMPBF
廠商: Linear Technology
文件頁數(shù): 3/20頁
文件大小: 0K
描述: IC AMP CURRENT SENSE R-R 6-DFN
標(biāo)準(zhǔn)包裝: 500
放大器類型: 電流檢測(cè)
電路數(shù): 1
轉(zhuǎn)換速率: 2 V/µs
-3db帶寬: 100kHz
電壓 - 輸入偏移: 100µV
電流 - 電源: 250µA
電流 - 輸出 / 通道: 1mA
電壓 - 電源,單路/雙路(±): 2.85 V ~ 36 V,±1.425 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 6-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 6-DFN-EP(2x3)
包裝: 帶卷 (TR)
LT6105
11
6105fa
PIN FUNCTIONS
–IN (Pin 1/Pin 1): Negative Sense Input Terminal.
Negative sense voltage input will remain functional for
voltages up to 44V, referred to V. Connect –IN to an
external gain-setting resistor RIN1 (RIN1 = RIN2) to set
the gain.
V+ (Pin 2/Pin 2):
Power Supply Voltage. This pin supplies
current to the amplier and can operate from 2.85V to 36V,
independent of the voltages on the –IN or +IN pins.
V(Pin 3/Pin 4):
Negative Power Supply Voltage or Ground
for Single Supply Operation.
VOUT (Pin 4/Pin 5): Voltage Output:
VOUT = AV (VSENSE ± VOS)
VOS is the input offset voltage. AV is the gain set by exter-
nal RIN1, RIN2, ROUT. AV = ROUT/RIN1, for RIN1 = RIN2.
NC (Pin 5/Pins 3, 6, 7): Not Connected Internally.
+IN (Pin 6/Pin 8): Positive Sense Input Terminal.
Connecting a source to VS+ and a load to VS– will allow the
LT6105 to monitor the current through RSENSE, refer to
Figure 1. Connect +IN to an external gain-setting resistor
RIN2 to set the gain. +IN remains functional for voltages
up to 44V, referred to V.
Exposed Pad (Pin 7) DFN Only: V. The Exposed Pad is
connected to the Vpin. It should be connected to the
Vtrace of the PCB, or left oating.
(DCB/MS8)
BLOCK DIAGRAM
ROUT
VSENSE
RSENSE
RIN2
RIN1
VS+
VS–
LT6105
TO LOAD
SOURCE
0V TO 44V
VOUT = VSENSE
ROUT
RIN2
VOUT = VSENSE
WHERE RIN = RIN1 = RIN2
ROUT
RIN
AV =
ROUT
RIN
VOUT
V+
–IN
+IN
V
SET RIN1 = RIN2 FOR BEST ACCURACY
IF RIN1 ≠ RIN2, THEN
RIN1, RIN2, ROUT ARE EXTERNAL RESISTORS
V(–IN) > 1.6V:
VOUT = VSENSE
ROUT
RIN1
V(–IN) < 1.6V:
6105 F01
+
+
A1
Q2
Q3
Q1
A2
Figure 1. Simplied Block Diagram
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