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.

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