LPC661  Product Folder

The LPC661 CMOS operational amplifier is ideal for operation from a single supply. It features a wide range of operating supply voltage from +5V to +15V, rail-to-rail output swing and an input common-mode range that includes ground. Performance limitations that have plagued CMOS amplifiers in the past are not a problem with this design. Input V_OS, drift, and broadband noise as well as voltage gain (into 100 kOhm and 5 kOhm) are all equal to or better than widely accepted bipolar equivalents, while the supply current requirement is typically 55 µA.

This chip is built with National's advanced Double-Poly Silicon-Gate CMOS process.

See the LPC660 datasheet for a Quad CMOS operational amplifier or the LPC662 data sheet for a Dual CMOS operational amplifier with these same features.

(Typical unless otherwise noted)

• Rail-to-rail output swing
• Low supply current 55 µA
• Specified for 100 kOhm and 5 kOhm loads
• High voltage gain 120 dB
• Low input offset voltage 3 mV
• Low offset voltage drift 1.3 µV/°C
• Ultra low input bias current 2 fA
• Input common-mode range includes GND
• Operating range from +5V to +15V
• Low distortion 0.01% at 1 kHz
• Slew rate 0.11 V/µs

• High-impedance buffer
• Precision current-to-voltage converter
• Long-term integrator
• High-impedance preamplifier
• Active filter
• Sample-and-Hold circuit
• Peak detector