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부품번호 | KM4101IT6TR3 기능 |
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기능 | Low Cost/ +2.7V and +5V/ 260MHz Rail-to-Rail Amplifiers | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 11 페이지수
www.fairchildsemi.com
KM4100/KM4101
Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers
Features
s 260MHz bandwidth
s Fully specified at +2.7V and +5V supplies
s Output voltage range:
0.036V to 4.953V; Vs = +5; RL = 2kΩ
s Input voltage range: -0.3V to +3.8V; Vs = +5
s 150V/µs slew rate
s 4.2mA supply current
s Power down to Is = 127µA (KM4101)
s ±60mA linear output current
s ±90mA output short circuit current
s Directly replaces AD8051 and LM7131 in single
supply applications
s Small package options (SOT-23, SOIC)
Applications
s A/D driver
s Active filters
s CCD imaging systems
s CD/DVD ROM
s Coaxial cable drivers
s High capacitive load driver
s Portable/battery-powered applications
s Twisted pair driver
s Video driver
General Description
The KM4100 (single) and KM4101 (single with
disable) are low cost, voltage feedback amplifiers.
These amplifiers are designed to operate on +2.7V,
+5V, or ±2.5V supplies. The input voltage range
extends 300mV below the negative rail and 1.2V
below the positive rail.
The KM4100 offers superior dynamic performance
with a 260MHz small signal bandwidth and 150V/µs
slew rate. The combination of low power, high
output current drive, and rail-to-rail performance
make the KM4100 well suited for battery-powered
communication/computing systems.
The combination of low cost and high performance
make the KM4100 suitable for high volume applications
in both consumer and industrial applications such as
wireless phones, scanners, and color copiers.
Output Swing
2.7
KM4100/KM4101 Packages
SOT23-5 (KM4100)
SOT23-6 (KM4101)
Out 1
5 +Vs Out 1
6 +Vs
-Vs 2
-
-Vs 2
5 DIS
-
0
Vs = +2.7V
RL = 2kΩ
G = -1
Time (0.5µs/div)
+In 3
4 -In +In 3
4 -In
SOIC (KM4100)
SOIC (KM4101)
NC 1
8 NC NC 1
8 DIS
-In 2
+In 3
-
+
7 +Vs
6 Out
-In 2
+In 3
-
+
7 +Vs
6 Out
-Vs 4
5 NC -Vs 4
5 NC
REV. 1A February 2001
DATA SHEET
KM4100/KM4101
KM4100/KM4101 Performance Characteristics (Vs = +5V, G = 2, Rf = 2kΩ, RL = 2kΩ to Vs/2; unless noted)
Non-Inverting Freq. Response Vs = +5V
G=2
Rf = 1kΩ
G=1
Rf = 0
G = 10
Rf = 2kΩ
G=5
Rf = 2kΩ
Inverting Freq. Response Vs = +5V
G = -2
Rf = 2kΩ
G = -1
Rf = 2kΩ
G = -10
Rf = 2kΩ
G = -5
Rf = 2kΩ
0.1 1 10 100
Frequency (MHz)
Non-Inverting Freq. Response Vs = +2.7
G=2
Rf = 1kΩ
G=1
Rf = 0
G = 10
Rf = 2kΩ
G=5
Rf = 2kΩ
0.1 1
10 100
Frequency (MHz)
Frequency Response vs. CL
0.1 1 10 100
Frequency (MHz)
Inverting Freq. Response Vs = +2.7
G = -2
Rf = 2kΩ
G = -1
Rf = 2kΩ
G = -10
Rf = 2kΩ
G = -5
Rf = 2kΩ
0.1 1 10 100
Frequency (MHz)
Large Signal Frequency Response
CL = 100pF
Rs = 25Ω
CL = 50pF
Rs = 33Ω
+ Rs
CL = 20pF
Rs = 20Ω
-
1kΩ
1kΩ
CL RL
CL = 10pF
Rs = 0Ω
0.1 1
10 100
Frequency (MHz)
Frequency Response vs. Temperature
1 10 100
Frequency (MHz)
Vo = 1Vpp
Vo = 2Vpp
0.1 1
10 100
Frequency (MHz)
Input Voltage Noise
100
90
80
70
60
50
40
30
20
10
0
1k 10k 100k
Frequency (Hz)
1M
4 REV. 1A February 2001
4페이지 KM4100/KM4101
General Description
The KM4100/KM4101 are single supply, general
purpose, voltage-feedback amplifiers fabricated on a
complementary bipolar process using a patent pending
topology. They feature a rail-to-rail output stage and
are unity gain stable. Both gain bandwidth and slew
rate are insensitive to temperature.
The common mode input range extends to 300mV
below ground and to 1.2V below Vs. Exceeding these
values will not cause phase reversal. However, if the
input voltage exceeds the rails by more than 0.5V, the
input ESD devices will begin to conduct. The output
will stay at the rail during this overdrive condition.
The design uses a Darlington output stage. The output
stage is short circuit protected and offers “soft”
saturation protection that improves recovery time.
The typical circuit schematic is shown in Figure 1.
+Vs
6.8µF
+
In 0.01µF
+
KM4100
-
Rf
Rg
Out
Figure 1: Typical Configuration
At non-inverting gains other than G = +1, keep Rg
below 1kΩ to minimize peaking; thus, for optimum
response at a gain of +2, a feedback resistor of 1kΩ is
recommended. Figure 2 illustrates the KM4100/
KM4101 frequency response with both 1kΩ and 2kΩ
feedback resistors.
Enable/Disable Function (KM4101)
The KM4101 offers an active-low disable pin that can
be used to lower its supply current. Leave the pin
floating to enable the part. Pull the disable pin to the
negative supply (which is ground in a single supply
application) to disable the output. During the disable
condition, the nominal supply current will drop to
below 127µA and the output will be at high impedance
with about 2pF capacitance.
Frequency Reponse vs. Rf
G=2
RL = 2kΩ
Vs = +5V
Rf = 2kΩ
Rf = 1kΩ
DATA SHEET
1 10 100
Frequency (MHz)
Figure 2: Frequency Response vs. Rf
Power Dissipation
The maximum internal power dissipation allowed is
directly related to the maximum junction temperature.
If the maximum junction temperature exceeds 150°C,
some reliability degradation will occur. If the maximum
junction temperature exceeds 175°C for an extended
time, device failure may occur.
The KM4100/KM4101 are short circuit protected.
However, this may not guarantee that the maximum
junction temperature (+150°C) is not exceeded under
all conditions. Follow the maximum power derating
curves shown in Figure 3 to ensure proper operation.
Maximum Power Dissipation
2.0
1.5
SOIC-8 lead
1.0
SOT23-6 lead
0.5 SOT23-5 lead
0
-50 -30 -10 10 30 50 70
Ambient Temperature ( C)
90
Figure 3: Power Derating Curves
Overdrive Recovery
For an amplifier, an overdrive condition occurs when
the output and/or input ranges are exceeded. The
recovery time varies based on whether the input or
output is overdriven and by how much the ranges are
exceeded. The KM4100/KM4101 will typically recover
in less than 20ns from an overdrive condition. Figure
4 shows the KM4100 in an overdriven condition.
REV. 1A February 2001
7
7페이지 | |||
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부품번호 | 상세설명 및 기능 | 제조사 |
KM4101IT6TR3 | Low Cost/ +2.7V and +5V/ 260MHz Rail-to-Rail Amplifiers | Fairchild Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |