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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

1

•

(Maximum Limit, 25°C Unless Otherwise Noted)

three times in the first minute of operation. Even units

•

Input Current (100% Tested): 25 fA

that meet the 25-fA limit are rejected if they drift.

•

Input Current Over Temperature: 2 pA

Because of the ultra-low input current noise of 0.13

•

Low Power: 750

μA

fA/

√Hz, the LMC6001 can provide almost noiseless

amplification

of

high

resistance

signal

sources.

•

Adding only 1 dB at 100 k

Ω, 0.1 dB at 1 MΩ and 0.01

•

Low Noise: 22 nV/

√Hz at 1 kHz Typical

dB or less from 10 M

Ω to 2,000 MΩ, the LMC6001 is

an almost noiseless amplifier.

2 Applications

The LMC6001 is ideally suited for electrometer

•

Electrometer Amplifiers

applications requiring ultra-low input leakage such as

•

Photodiode Preamplifiers

sensitive photodetection transimpedance amplifiers

and sensor amplifiers. Because input referred noise is

•

Ion Detectors

only 22 nV/

√Hz, the LMC6001 can achieve higher

•

A.T.E. Leakage Testing

signal

to

noise

ratio

than

JFET

input

type

electrometer amplifiers. Other applications of the

3 Description

LMC6001 include long interval integrators, ultra-high

Featuring 100% tested input currents of 25 fA

input

impedance

instrumentation

amplifiers,

and

maximum, low operating power, and ESD protection

sensitive electrical-field measurement circuits.

of 2000 V, the LMC6001 device achieves a new

industry benchmark for low input current operational

Device Information(1)

amplifiers.

By

tightly

controlling

the

molding

PART NUMBER

PACKAGE

BODY SIZE (NOM)

compound, Texas Instruments is able to offer this

PDIP (8)

9.81 mm × 6.35 mm

ultra-low input current in a lower cost molded

LMC6001

TO-99 (8)

9.08 mm × 9.08 mm

package.

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

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.