參數(shù)資料
型號(hào)： LT1010CT#31
廠商： Linear Technology
文件頁(yè)數(shù)： 4/20頁(yè)
文件大?。?/td> 0K
描述： IC BUFFER HI-SPEED 150MA TO220-5
標(biāo)準(zhǔn)包裝： 50
放大器類型： 緩沖器
電路數(shù)： 1
轉(zhuǎn)換速率： 75 V/µs
增益帶寬積： 20MHz
電流 - 輸入偏壓： 500µA
電流 - 電源： 5mA
電流 - 輸出 / 通道： 150mA
電壓 - 電源，單路/雙路(±)： 4.5 V ~ 40 V，±2.25 V ~ 20 V
工作溫度： 0°C ~ 100°C
安裝類型： 通孔
封裝/外殼： TO-220-7 成形引線
供應(yīng)商設(shè)備封裝： TO-220-5
包裝： 管件
其它名稱： LT1010CT-FLOW31
LT1010CT-FLOW31-ND
Q1102103
LT1010
12
1010fe
APPLICATIONS INFORMATION
excellent matching of the feedback resistors is required to
get high output resistance. Output is bidirectional.
enables the current regulator to get control of the output
current from the buffer current limit within a microsecond
for an instantaneous short.
In the voltage regulation mode, A1 and A2 act as a fast
voltage follower using the capacitive load isolation tech-
nique described earlier. Load transient recovery as well as
capacitive load stability are determined by C1. Recovery
from short circuit is clean.
Bidirectionalcurrentlimitcanbeobtainedbyaddinganother
op amp connected as a complement to A3.
Supply Splitter
Dual supply op amps and comparators can be operated
from a single supply by creating an artificial ground at
half the supply voltage. The supply splitter shown here
can source or sink 150mA.
The output capacitor, C2, can be made as large as neces-
sary to absorb current transients. An input capacitor is
also used on the buffer to avoid high frequency instability
that can be caused by high source impedance.
A2
LT1010
R3
100k
0.01%
V2
R1
100k
0.01%
R2
100k
0.01%
R4
100k
0.01%
R4
10
0.1%
V1
1010 AI13
IOUT
–
+
A1
LT1012
R2(V2 – V1)
R1R4
IOUT =
This circuit uses an instrumentation amplifier to eliminate
the matched resistors. The input is not high impedance
and must be driven from a low impedance source like
an op amp. Reversal of output sense can be obtained by
grounding Pin 7 of the LM163 and driving Pin 5.
A2
LT1010
R1
10
0.1%
VIN
10R1
IOUT =
–
+
VIN
IOUT
1010AI14
6
7
2
3
5
A1
LM163
×10
Output resistances of several megohms can be obtained
with both circuits. This is impressive considering the
±150mA output capability. High frequency output charac-
teristics will depend on the bandwidth and slew rate of the
amplifiers. Both these circuits have an equivalent output
capacitance of about 30nF.
Voltage/Current Regulator
This circuit regulates the output voltage at VVuntiltheload
current reaches a value programmed by VI. For heavier
loads, it is a precision current regulator.
With output currents below the current limit, the current
regulator is disconnected from the loop by D1 with D2
keeping its output out of saturation. This output clamp
A2
LT1010
D1
1N457
D2
1N457
C1
1nF
R3
2
R4
2k
0.1%
–
+
–
+
R2
2k
1010 AI15
A3
LT118A
VI
10mA/V
VV
1V/V
R5
2k
0.1%
OUTPUT
R6
99.8k
0.1%
R1
2k
R7
99.8k
0.1%
C2
10pF
A1
LT118A
A1
LT1010
R2
10k
R1
10k
C1
1nF
C3
0.1F
C2
0.01F
V+/2
1010 AI16
V+
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