FAN4272 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Dual, Low Cost, +2.7V & +5V, Rail-to-Rail I/O Amplifier

www.fairchildsemi.com
FAN4272
Dual, Low Cost, +2.7V & +5V, Rail-to-Rail I/O Amplifier
Features at 2.7V
• 130µA supply current per amplifier
• 4MHz bandwidth
• Output swings to within 25mV of either rail
• Input voltage range exceeds the rail by >250mV
• 4V/µs slew rate
• 16mA output current
• 22nV/√Hz input voltage noise
• Operating temperature range: -40°C to +125°C
• Directly replaces TLC2272 in single supply applications
• Available in SOIC-8 and MSOP-8 package options
• Available evaluation boards:
KEB006 (SOIC) and KEB010 (MSOP)
Applications
• Automotive 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
FAN4272 Packages
SOIC
Out1 1
-In1 2 -
+In1 3 ⁺
8 +V_s
7 Out2
6 -In2
-V_s 4
5 +In2
MSOP
Out1 1
-In1 2 -
+In1 3 ⁺
-V_s 4
8 +V_s
7 Out2
6 -In2
5 +In2
Description
The FAN4272 is an ultra-low cost, low power, voltage feed-
back amplifier. At 5V, the FAN4272 uses only 160µA of
supply current per amplifier and is designed to operate from a
supply range of 2.5V to 5.5V (±1.25V to 2.75V). The input
voltage range exceeds the negative and positive rails.
The FAN4272 offers high bipolar performance at a low CMOS
price. The FAN4272 offers superior dynamic performance
with a 4MHz small signal bandwidth and 4V/µs slew rate.
The combination of low power, high bandwidth, and rail-to-
rail performance make the FAN4272 well suited for battery-
powered communication/computing systems.
Large Signal Freq. Response Vs = +5V
Vo = 4Vpp
Vo = 1Vpp
Vo = 2Vpp
0.1
1
10
Frequency (MHz)
Output Swing vs. Load Vs = +5V
2.5
RL = 10kΩ
2.0
1.5
RL = 1kΩ
RL = 200Ω
1.0
RL = 75Ω
RL = 100Ω
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3
-2
-1
0
1
2
3
Input Voltage (V)
Rev. 2 December 2002