Product Overview
Micropower Rail-to-Rail Dual CMOS Op Amp, 3 V to 15.5 V, 8-Pin SOIC
Condition
Condition: unused, new old stock (NOS). Markings legible: National Semiconductor logo, LMC64 / 62AIM. Sold each.
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Product Overview
Dual micropower CMOS operational amplifier from National Semiconductor, rail-to-rail on both input and output, in the A-grade, -40 to +85 degC, 8-pin SOIC version: LMC6462AIM. The LMC6462 design now sits in the Texas Instruments line.
Key Features
- Two op amps in one 8-pin SOIC surface-mount package
- Supply range 3 V to 15.5 V, with characteristics specified at 3 V and 5 V
- Supply current 20 uA per amplifier
- Rail-to-rail input common-mode range and rail-to-rail output, within 10 mV of the rail at 5 V into 25 kohm
- Input offset voltage 0.5 mV maximum at 25 degC (A grade), 0.25 mV typical
- Input bias current 150 fA typical
- Gain bandwidth 50 kHz typical; slew rate 0.028 V/us typical
- Operating temperature -40 to +85 degC
Applications
- Buffering a high-impedance sensor such as a photodiode or pH probe, where femtoamp bias current keeps the reading honest
- Battery-powered sensor front ends where every microamp of supply current counts
- Single-supply 3 V and 5 V signal conditioning that needs to swing close to both rails
Frequently Asked Questions
Is this the A grade or the B grade?
A grade. The body reads LMC64 / 62AIM, and the A grade carries the tighter offset: 0.5 mV maximum at 25 degC, 0.25 mV typical.
Will it run from a single 3.3 V or 5 V rail?
Yes. The supply range is 3 V to 15.5 V, the characteristics are specified at 3 V and 5 V, and both input and output reach the rails.
Is it fast enough for audio work?
No. With 50 kHz gain bandwidth and 0.028 V/us slew rate, this is a micropower part built for slow, precise signals, not the audio band.
Is this the surface-mount or the through-hole version?
Surface mount. The M at the end of LMC6462AIM is the 8-pin SOIC package code, so it needs SOIC-8 pads, not a DIP socket.
Twenty microamps per amplifier is a smaller appetite than most power-on indicator LEDs. Give this pair a battery-powered sensor to watch and let the battery worry about something else.
