- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44987 > LT6109HMS-1#TRPBF (LINEAR TECHNOLOGY CORP) SPECIALTY ANALOG CIRCUIT, PDSO10 PDF資料下載
參數(shù)資料
| 型號(hào)： | LT6109HMS-1#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO10 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 13/28頁 |
| 文件大小： | 370K |
| 代理商： | LT6109HMS-1#TRPBF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當(dāng)前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
LT6109-1/LT6109-2
20
610912f
APPLICATIONS INFORMATION
R1 should be chosen such that R1 >> R7 so that VOUTA
does not change significantly when the comparator trips.
R3 should be chosen to allow sufficient VOL and compara-
tor output rise time due to capacitive loading.
R2 can be calculated:
R2
= R1
V+ – 390mV
VHYS(EXTRA)
Note that the hysteresis being added, VHYS(EXTRA), is in
addition to the typical 10mV of built-in hysteresis. For very
large values of R2 PCB related leakage may become an
issue. A tee network can be implemented to reduce the
required resistor values.
The approximate total hysteresis is:
VHYS =10mV +R1
V+ – 390mV
R2
For example, to achieve IOVER = 900A with 50mV of total
hysteresis, R7 = 442Ω. Choosing R1 = 4.42k, R3 = 10k
and V+ = 5V results in R2 = 513k.
The analog output voltage will also be affected when the
comparator trips due to the current injected into R7 by
the positive feedback. Because of this, it is desirable to
have (R1 + R2) >> R7. The maximum VOUTA error caused
by this can be calculated as:
VOUTA = V+
R7
R1
+R2+R7
In the previous example, this is an error of 4.3mV at the
output of the amplifier or 43V at the input of the amplifier
assuming a gain of 100.
When using the comparators with their inputs decoupled
from the output of the amplifier they may be driven directly
by a voltage source. It is useful to know the threshold
voltage equations with additional hysteresis. The input
rising edge threshold which causes the output to transi-
tion from high to low is:
VTH(R) = 400mV R1
1
R1
+
1
R2
The input falling edge threshold which causes the output
to transition from low to high is:
VTH(F) = 390mV R1
1
R1
+
1
R2
–
V+ R1
R2
Comparator Outputs
The comparator outputs can maintain a logic low level
of 150mV while sinking 500A. The outputs can supply
higher currents at elevated VOL levels as shown in the
Typical Performance Characteristics. Load currents are
conducted to the V– pin. The output off-state voltage may
range between 0V and 60V with respect to V–, regardless
of the supply voltage used. As with any open-drain device,
the outputs may be tied together to implement wire-OR
logic functions. The LT6109-1 can be used as a single-
output window comparator in this way.
EN/RST Pin
The EN/RST pin performs the two functions of resetting
the latch on the comparators as well as shutting down
the LT6109.
Applying a pulse to the EN/RST pin will reset the compara-
tors from their tripped state as long as the input on the
comparator is below the threshold and hysteresis for an
invertingcomparatororabovethethresholdandhysteresis
for a noninverting comparator. For example, if VINC1 is
pulled higher than 400mV and latches the comparator, a
reset pulse will not reset that comparator unless its input
is held below the threshold by a voltage greater than the
10mV typical hysteresis.
Figure 15 shows the reset functionality of the EN/RST
pin. The width of the pulse applied to reset the compara-
tors must be greater than tRPW(MIN) (2s) but less than
tRPW(MAX) (15s). Applying a pulse that is longer than
40s typically (or tying the pin low) will cause the part
to enter shutdown. Once the part has entered shutdown,
the supply current will be reduced to 6A typically and the
amplifier,comparatorsandreferencewillceasetofunction
until the EN/RST pin is transitioned high. When the part
is disabled, both the amplifier and comparator outputs
are high impedance.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT6555IGN#PBF | TRIPLE 1-CHANNEL, VIDEO MULTIPLEXER, PDSO24 |
| LT6604CUFF-2.5#PBF | SPECIALTY ANALOG CIRCUIT, PQCC34 |
| LT6604CUFF-2.5#TRPBF | SPECIALTY ANALOG CIRCUIT, PQCC34 |
| LT6604CUFF-5#TRPBF | SPECIALTY ANALOG CIRCUIT, PQCC34 |
| LT6604IUFF-5#PBF | SPECIALTY ANALOG CIRCUIT, PQCC34 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT6109HMS-2#PBF | 功能描述:IC AMP CURRENT SENSE 10-MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LT6109HMS-2#TRPBF | 功能描述:IC AMP CURRENT SENSE 10MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LT6109IMS-1#PBF | 功能描述:IC AMP CURRENT SENSE 10MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LT6109IMS-1#TRPBF | 功能描述:IC AMP CURRENT SENSE 10MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LT6109IMS-2#PBF | 功能描述:IC AMP CURRENT SENSE 10MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。