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Número de pieza | KM4170IT5TR3 | |
Descripción | Low Cost/ +2.7V & +5V/ Rail-to-Rail I/O Amplifiers | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
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KM4170, KM4270, KM4470
Low Cost, +2.7V & +5V, Rail-to-Rail I/O Amplifiers
Features at 2.7V
• 136µA supply current per amplifier
• 4.9MHz bandwidth
• Output swings to within 20mV of either rail
• Input voltage range exceeds the rail by >250mV
• 5.3V/µs slew rate
• 16mA output current
• 21nV/√Hz input voltage noise
• KM4170:
directly replaces OPA340, OPA343, and TLV2461 in
single supply applications and available in SC70-5 and
SOT23-5 package options
• KM4270:
directly replaces MAX4126, OPA2340, LMV822 and
TLV2462 in single supply applications and available in
SOIC-8 and MSOP-8 package options
• KM4470:
directly replaces MAX4129, OPA4340, LMV824 and
TLV2464 in single supply applications and available in
TSSOP-14 package option
Applications
• Portable/battery-powered applications
• PCMCIA, USB
• Mobile communications, cellular phones, pagers
• Notebooks and PDA’s
• Sensor Interface
• A/D buffer
• Active filters
• Signal conditioning
• Portable test instruments
Description
The KM4170 (single), KM4270 (dual), and KM4470 (quad)
are ultra-low cost, low power, voltage feedback amplifiers.
At 5V, the KM4X70 family uses only 160µA of supply current
per amplifier and are designed to operate from a supply range
of 2.5V to 5.5V (±1.25 to ±2.75). The input voltage range
exceeds the negative and positive rails.
The KM4X70 family of amplifiers offer high bipolar
performance at a low CMOS prices. They offer superior
dynamic performance with 4.9MHz small signal bandwidths
and 5.3V/µs slew rates. The combination of low power, high
bandwidth, and rail-to-rail performance make the KM4X70
amplifiers well suited for battery-powered communication/
computing systems.
Large Signal Frequency Response
Vs = 5V
Vo = 1Vpp
Vo = 4Vpp
Vo = 2Vpp
0.01 0.1
1
Frequency (MHz)
Output Swing vs. Load
1.35
RL = 10kΩ
RL = 1kΩ
10
RL = 75Ω
0
RL = 100Ω
RL = 200Ω
RL = 75/100Ω
-1.35
-2.0
0
Input Voltage (0.4V/div)
2.0
REV. 5 December 2002
1 page KM4170, KM4270, KM4470
DATA SHEET
Typical Operating Characteristics
(Vs = +2.7V, G = 2, RL = 10kΩ to Vs/2, Rf = 5kΩ; unless otherwise noted)
Non-Inverting Freq. Response Vs = +5V
Vo = 0.2Vpp
G=2
Rf = 5kΩ
G=1
Rf = 0
Inverting Frequency Response Vs = +5V
Vo = 0.2Vpp
G = -2
Rf = 5kΩ
G = -1
Rf = 5kΩ
G = 10
Rf = 5kΩ
G=5
Rf = 5kΩ
G = -10
Rf = 5kΩ
G = -5
Rf = 5kΩ
0.01 0.1 1 10
Frequency (MHz)
Non-Inverting Frequency Response
Vo = 0.2Vpp
G=2
Rf = 5kΩ
G=1
Rf = 0
0.01 0.1
1
Frequency (MHz)
10
Inverting Frequency Response
Rf = 5kΩ
G = -2
G = -1
G = 10
Rf = 5kΩ
G=5
Rf = 5kΩ
G = -10
G = -5
0.01 0.1
1
Frequency (MHz)
10
Frequency Response vs. CL
Vo = 0.05V
CL = 100pF
Rs = 100Ω
CL = 50pF
Rs = 0Ω
CL = 20pF
Rs = 0
CL = 10pF
Rs = 0
+ Rs
-
5kΩ
CL RL
5kΩ
0.01 0.1 1 10
Frequency (MHz)
Large Signal Frequency Response
Vs = 5V
Vo = 1Vpp
Vo = 4Vpp
Vo = 2Vpp
0.01 0.1 1 10
Frequency (MHz)
0.01 0.1
1
Frequency (MHz)
Frequency Response vs. RL
10
RL = 1kΩ
RL = 200Ω
RL = 50Ω
RL = 10kΩ
0.01 0.1 1 10
Frequency (MHz)
Open Loop Gain & Phase vs. Frequency
140
|Gain|
120 RL = 10kΩ
|Gain|
No load
Vs = 5V
100
80
60 0
40 -45
20 -90
0
Phase
RL = 10kΩ
Phase
No load
-135
-20 -180
100 101 102 103 104 105 106 107 108
Frequency (Hz)
REV. 5 December 2002
5
5 Page KM4170, KM4270, KM4470
KM4270 Evaluation Board Layout
DATA SHEET
Figure 6e: KEB006 (top side)
Figure 6f: KEB006 (bottom side)
Figure 6g: KEB010 (top side)
REV. 5 December 2002
Figure 6h: KEB010 (bottom side)
11
11 Page |
Páginas | Total 16 Páginas | |
PDF Descargar | [ Datasheet KM4170IT5TR3.PDF ] |
Número de pieza | Descripción | Fabricantes |
KM4170IT5TR3 | Low Cost/ +2.7V & +5V/ Rail-to-Rail I/O Amplifiers | Fairchild Semiconductor |
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