参数资料
| 型号： | LT1787IMS8 |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP PREC CURRENT SENSE 8MSOP |
| 标准包装： | 50 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| 电压 - 输入偏移： | 40µV |
| 电流 - 电源： | 60µA |
| 电流 - 输出 / 通道： | 50µA |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 36 V，±1.25 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 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
相关PDF资料 |
PDF描述 |
|---|---|
| RC0805FR-071K58L | RES 1.58K OHM 1/8W 1% 0805 SMD |
| 929647-02-26-I | CONN HEADER .100 SNGL STR 26POS |
| AD8557ARZ-REEL7 | IC AMP CHOPPER 2MHZ 55MA 8SOIC |
| AS168X-CB4G500 | CIRCUIT BRKR THERMAL 50.0A 4POLE |
| TMM-117-01-G-S-SM | CONN HEADER 17POS SNGL 2MM SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1787IMS8#PBF | 功能描述:IC AMP PREC CURRENT SENSE 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 放大器类型:电流检测 电路数:1 输出类型:- 转换速率:- 增益带宽积:125kHz -3db带宽:- 电流 - 输入偏压:- 电压 - 输入偏移:100µV 电流 - 电源:1.1µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:4-WFBGA，CSPBGA 供应商设备封装:4-UCSP（2x2） 包装:剪切带 (CT) 其它名称:MAX9634WERS+TCT |
| LT1787IMS8#TR | 功能描述:IC AMP PREC CURRENT SENSE 8MSOP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:管件 |
| LT1787IMS8#TRPBF | 功能描述:IC AMP PREC CURRENT SENSE 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:管件 |
| LT1787IMS8PBF | 制造商:Linear Technology 功能描述:SP Amp Current Sense Amp 36V MSOP8 |
| LT1787IS8 | 功能描述:IC AMP PREC CURRENT SENSE 8SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:3 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:70µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:Digi-Reel® 其它名称:MAX4475AUT#TG16DKR |
发布紧急采购，3分钟左右您将得到回复。