APPLICATIONS IN" />
參數(shù)資料
型號: LT1787CMS8
廠商: Linear Technology
文件頁數(shù): 3/16頁
文件大?。?/td> 0K
描述: IC AMP PREC CURRENT SENSE 8MSOP
標(biāo)準(zhǔn)包裝: 50
放大器類型: 電流檢測
電路數(shù): 1
電壓 - 輸入偏移: 40µV
電流 - 電源: 60µA
電流 - 輸出 / 通道: 50µA
電壓 - 電源,單路/雙路(±): 2.5 V ~ 36 V,±1.25 V ~ 18 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 管件
11
LT1787/LT1787HV
1787fc
APPLICATIONS INFORMATION
WU
U
with absolute minimum swing at 30mV above VEE. VOUT
may swing positive to within 0.75V of VS+ or a maximum
of 35V, a limit set by internal junction breakdown. Within
these contraints, an amplified, level shifted representation
of the RSENSE voltage is developed across ROUT.
Split Supply Bipolar Output Swing
Figure 2 shows the LT1787 used with split power supplies.
The VBIAS pin is connected to ground, and the output
signal appears at the VOUT pin. Bidirectional input currents
can be monitored with the output swinging positive for
current flow from VS+ and VS–. Input currents in the
opposite direction cause VOUT to swing below ground.
Figure 2 shows an optional output capacitor connected
from VOUT to ground. This capacitor may be used to filter
the output signal before it is processed by other
circuitry.Figure 3 shows the voltage transfer function of
the LT1787 used in this configuration.
Single Supply with Shifted VBIAS
Figure 4 shows the LT1787 used in a single supply mode
with the VBIAS pin shifted positive using an external
LT1634 voltage reference. The VOUT output signal can
swing above and below VBIAS to allow monitoring of
positive or negative currents through the sense resistor,
as shown in Figure 5. The choice of reference voltage is not
critical except for the precaution that adequate headroom
must be provided for VOUT to swing without saturating the
internal circuitry. The component values shown in Figure 4
allow operation with VS supplies as low as 3.1V.
Figure 2. Split Supply Operation
*OPTIONAL
C2
1
F
–5V
1787 F02
OUTPUT
C3*
1000pF
C1
1
F
RSENSE
15V
TO
CHARGER/
LOAD
1
2
3
4
8
7
6
5
LT1787
FIL+
FIL
VBIAS
VOUT
VS
VS
+
DNC
VEE
ROUT
Figure 3. Split Supply Output Voltage
SENSE VOLTAGE (VS
+ – V
S
) (mV)
OUTPUT
VOLTAGE
OUTPUT
BIAS
VOLTAGE
(V)
1787 F05
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–128
–64
0
32
–96
–32
64
96
128
VS = 3.3V TO 60V
TA = – 40°C TO 85°C
Figure 5. Single Supply Output Voltage
with VBIAS = 1.25V
Figure 4. Charge/Discharge Current Monitor on
Single Supply with VBIAS = 1.25V
C2
1
F
20k
5%
1787 F04
3.3V
LT1634-1.25
*OPTIONAL
OUTPUT
C1
1
F
RSENSE
3.3V
TO
60V
TO
CHARGER/
LOAD
1
2
3
4
8
7
6
5
LT1787HV
FIL+
FIL
VBIAS
VOUT
VS
VS
+
DNC
VEE
C3*
1000pF
ROUT
SENSE VOLTAGE (VS
+ – V
S
) (mV)
OUTPUT
VOLTAGE
(V)
1787 F03
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–128
–64
0
32
–96
–32
64
96
128
VS = 3.3V TO 60V
TA = – 40°C TO 85°C
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參數(shù)描述
LT1787CMS8#PBF 功能描述:IC AMP PREC CURRENT SENSE 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源,單路/雙路(±):3 V ~ 16 V,±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5
LT1787CMS8#TR 功能描述:IC AMP PREC CURRENT SENSE 8MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源,單路/雙路(±):3 V ~ 16 V,±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5
LT1787CMS8#TRPBF 功能描述:IC AMP PREC CURRENT SENSE 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源,單路/雙路(±):3 V ~ 16 V,±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5
LT1787CS8 功能描述:IC AMP PREC CURRENT SENSE 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:2pA 電壓 - 輸入偏移:1000µV 電流 - 電源:85µA 電流 - 輸出 / 通道:20mA 電壓 - 電源,單路/雙路(±):1.8 V ~ 6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOICN 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:680 (CN2011-ZH PDF) 其它名稱:MCP6L04T-E/SLCT
LT1787CS8#PBF 功能描述:IC AMP PREC CURRENT SENSE 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源,單路/雙路(±):2.7 V ~ 12 V,±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT