FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers

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FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers

April 2005

FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers
Features
200 A supply current per amplifier 3.7MHz bandwidth Output swing to within 10mV of either rail Input voltage range exceeds the rails 3V/ s slew rate 25nV/Hz input voltage noise Replaces KM4170 and KM4270

Description
The FAN4174 (single) and FAN4274 (dual) are ultra-low cost, voltage feedback amplifiers with CMOS inputs that consume only 200 A of supply current per amplifier while providing 33mA of output short circuit current. These amplifiers are designed to operate from 2.5V to 5V supplies. The common mode voltage range extends beyond the negative and positive rails. The FAN4174 and FAN4274 are designed on a CMOS process and provide 3.7MHz of bandwidth and 3V/ s of slew rate at a supply voltage of 5V. The combination of low power, rail-to-rail performance, low voltage operation, and tiny package options make this amplifier family well suited for use in many general purpose and battery powered applications.

FAN4174 competes with OPA340 and TLV2461; available in lead (Pb) free SC70-5 and SOT23-5 packages FAN4274 competes with OPA2340 and TLV2462; available in lead (Pb) free MSOP-8 package Fully specified at 2.7V and 5V supplies

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 .
8 7 6 5 4 3 2 1 0 -1 -2 -3 0.1
Vo 50mV CL 500pF Rs 165 CL 2000pF Rs 65 CL 50pF Rs 0

Gain (dB)

CL 1000pF Rs 100 CL 100pF Rs 0
Rs

5k 5k

CL

RL

Portable test instruments

Typical Application Diagram
Vs 6.8 F

1.0

10

Frequency (MHz)

In

Rg

0.01 F Out Rf 6.8 F

FAN4174

0.01 F -Vs

FAN4174/FAN4274 Rev. 2D

1

www.fairchildsemi.com 2005 Fairchild Semiconductor Corporation

FAN4274 Datasheet Fairchild Download PDF

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FAN4274 DATASHEET