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LMC6001
SNOS694I –MARCH 1995–REVISED SEPTEMBER 2015
LMC6001 Ultra, Ultra-Low Input Current Amplifier
To avoid long turnon settling times common in other
1 Features
low input current op amps, the LMC6001A is tested
three times in the first minute of operation. Even units
that meet the 25-fA limit are rejected if they drift.
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(Maximum Limit, 25°C Unless Otherwise Noted)
Input Current (100% Tested): 25 fA
Input Current Over Temperature: 2 pA
Low Power: 750 μA
Because of the ultra-low input current noise of 0.13
fA/√Hz, the LMC6001 can provide almost noiseless
amplification of high resistance signal sources.
Adding only 1 dB at 100 kΩ, 0.1 dB at 1 MΩ and 0.01
dB or less from 10 MΩ to 2,000 MΩ, the LMC6001 is
an almost noiseless amplifier.
Low VOS: 350 μV
Low Noise: 22 nV/√Hz at 1 kHz Typical
2 Applications
The LMC6001 is ideally suited for electrometer
applications requiring ultra-low input leakage such as
sensitive photodetection transimpedance amplifiers
and sensor amplifiers. Because input referred noise is
only 22 nV/√Hz, the LMC6001 can achieve higher
signal to noise ratio than JFET input type
electrometer amplifiers. Other applications of the
LMC6001 include long interval integrators, ultra-high
input impedance instrumentation amplifiers, and
sensitive electrical-field measurement circuits.
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Electrometer Amplifiers
Photodiode Preamplifiers
Ion Detectors
A.T.E. Leakage Testing
3 Description
Featuring 100% tested input currents of 25 fA
maximum, low operating power, and ESD protection
of 2000 V, the LMC6001 device achieves a new
industry benchmark for low input current operational
amplifiers. By tightly controlling the molding
compound, Texas Instruments is able to offer this
ultra-low input current in a lower cost molded
package.
Device Information(1)
PART NUMBER
PACKAGE
PDIP (8)
TO-99 (8)
BODY SIZE (NOM)
9.81 mm × 6.35 mm
9.08 mm × 9.08 mm
LMC6001
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
R2
R1
±
VIN
LMC6001
VOUT
+
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.