参数资料
| 型号： | LT6100IMS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE 8MSOP |
| 标准包装： | 2,500 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| 转换速率： | 0.05 V/µs |
| -3db带宽： | 150kHz |
| 电压 - 输入偏移： | 80µV |
| 电流 - 电源： | 60µA |
| 电流 - 输出 / 通道： | 15mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 36 V，±1.35 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： | 带卷 (TR) |
LT6100
11
6100fc
applicaTions inForMaTion
Noise Filtering
The LT6100 provides signal filtering via pin FIL that is
internally connected to the resistors RE and RO. This pin
may be used to filter the input signal entering the LT6100’s
internal op amp, and should be used when fast ripple cur-
rent or transients flow through the sense resistor. High
frequency signals above the 300kHz bandwidth of the
LT6100’s internal amplifier will cause errors. A capacitor
connected between FIL and VEE creates a single pole low
pass filter with corner frequency:
f–3dB = 1/(2πRFILC)
where RFIL = 60k. A 220pF capacitor creates a pole at
12kHz, a good choice for many applications.
Output Signal Range
TheLT6100’soutputsignalisdevelopedbycurrentthrough
RG2intooutputresistorRO.ThecurrentisVSENSE/RG2.The
sense amplifier output, VO1, is buffered by the internal op
ampsothatconnectingtheoutputpinstoothersystemswill
preserve signal accuracy. For zero VSENSE, internal circuit
saturation with loss of accuracy occurs at the minimum
VOUT swing, 15mV above VEE. VOUT may swing positive
to within 75mV of VCC or a maximum of 36V, a limit set
by internal junction breakdown. Within these constraints,
an amplified, level shifted representation of the RSENSE
voltage is developed at VOUT. The output is well behaved
driving capacitive loads to 1000pF.
Sense Input Signal Range
The LT6100 has high CMRR over the wide input voltage
range of 4.1V to 48V. The minimum operation voltage of
the sense amplifier input is 1.4V above VCC. The output
remains accurate even when the sense inputs are driven
to 48V. Figure 2 shows that VOS changes very slightly
over a wide input range. Furthermore, the sense inputs
VS+ and VS– can collapse to zero volts without incurring
any damage to the device. The LT6100 can handle dif-
ferential sense voltages up to the voltage of the sense
inputs supplies. For example, VS+ = 48V and VS– = 0V can
be a valid condition in a current monitoring application
(Figure 3) when an overload protection fuse is blown and
VS– voltage collapses to ground. Under this condition, the
output of the LT6100 goes to the positive rail, VOH. There
is no phase inversion to cause an erroneous output signal.
For the opposite case when VS+ collapse to ground with
VS– held up at some higher voltage potential, the output
will sit at VOL. If both inputs fall below the minimum CM
voltage, VCC + 1.4V, the output is indeterminate but the
LT6100 will not be damaged.
VS INPUT VOLTAGE (V)
0
–3.5
INPUT
OFFSET
VOLTAGE
(mV)
–3.0
–2.0
–1.5
–1.0
1.5
0
20
40
50
6100 F02
–2.5
0.5
1.0
–0.5
10
30
VSENSE = 100mV
VCC = 3V
TA = 25°C
OUTPUT
VEE
OUT
6100 F03
RSENSE FUSE
LT6100
8
1
VS–
VS+
A4
2
VCC
A2
3
4
7
C2
0.1F
C1
0.1F
DC
SOURCE
5V
6
5
FIL
TO LOAD
–
+
Figure 2. VOS vs VS Input Voltage
Figure 3. Current Monitoring of a Fuse Protected Circuit
相关PDF资料 |
PDF描述 |
|---|---|
| 3403.0173.24 | FUSE 5A 125VDC UMT250 TLAG SMD |
| LT6100IDD#TRPBF | IC AMP CURRENT SENSE 8DFN |
| MMH23-0111J1 | CONN RACK/PANEL 11POS 5A |
| 0034.6802 | FUSE 50MA 250V 8.5X8.5 T 18.8 |
| LTC6101ACMS8#PBF | IC AMP CURRENT SENSE 8-MSOP |
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