National Semiconductor LMX7711 Technical data

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PRELIMINARY

LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier

September 2005

General Description

The LMP7711 is a low noise, low offset, CMOS input, railto-rail output precision amplifier with a high gain bandwidth and an enable pin. The LMP7711 is part of the LMP precision amplifier family and is ideal for a variety of instrumentation applications.

Utilizing a CMOS input stage, the LMP7711 achieves an input bias current of 100 fA, input referred voltage noise of

5.8 nV/

150 µV. These features make the LMP7711 a superior

choice for precision applications. Consuming only 1.15 mA of supply current, the LMP7711

offers a high gain bandwidth of 17 MHz, enabling accurate amplification at high closed loop gains.

The LMP7711 has a supply voltage range of 1.8V to 5.5V; which makes this an ideal choice for portable low power applications with low supply voltage requirements. In order to reduce the already low power consumption of the LMP7711, an enable function is available. Once in shutdown, the LMP7711 draws only 140 nA of supply current.

The LMP7711 is built with National’s advanced VIP50 process technology. The LMP7711 is available in a 6-pin TSOT23 package.

, and an input offset voltage of less than

Typical Performance

Features

Unless otherwise noted, typical values at VS=5V. n Input offset voltage

™

n Input bias current 100 fA n Input voltage noise 5.8 nV/ n Unity gain bandwidth 17 MHz n Supply current 1.15 mA n Supply voltage range 1.8V to 5.5V n Total harmonic distortion 0.001% n Operating temperature range −40 n Rail-to-rail output swing n Space saving TSOT23 package

150 µV (max)

Applications

n Active filters and buffers n Sensor interface applications n Transimpedance amplifiers

1 kHz, 600Ω

C to 125˚C

Offset Voltage Distribution Input Referred Voltage Noise

LMP™is a trademark of National Semiconductor Corporation.

20150322

20150339

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

LMP7711

please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

Soldering Information

Infrared or Convection (20 sec) 235˚C

Wave Soldering Lead Temp. (10

sec) 260˚C

ESD Tolerance (Note 2)

Human Body 2000V

Operating Ratings (Note 1)

Machine Model 200V

Differential 0.3V

Supply Voltage (V

Voltage on Input/Ouput Pins V

=V+–V−) 6.0V

+0.3V, V−−0.3V

Storage Temperature Range −65˚C to 150˚C

Junction Temperature (Note 3) +150˚C

Temperature Range (Note 3) −40˚C to 125˚C

Supply Voltage (V

0˚C ≤ T

≤125˚C 1.8V to 5.5V

–40˚C ≤ T

=V+–V−)

≤125˚C 2V to 5.5V

Package Thermal Resistance (θJA (Note 3))

6-Pin TSOT23 170˚C/W

2.5V Electrical Characteristics

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 2.5V, V−= 0V, VCM=V+/2, VEN=V+. Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 5)

TC V

CMRR Common Mode Rejection Ratio 0V ≤ V

Input Offset Voltage

Input Offset Voltage Drift (Note 6)

Input Bias Current (Notes 7, 8)

=1V

Input Offset Current (Note 8) 6 100 fA

≤ 1.4V 83

PSRR Power Supply Rejection Ratio 2V ≤ V+≤ 5.5V, V−= 0V, VCM=0 85

≤ 5.5V, V−= 0V, VCM= 0 85 98

−0.3

-0.3

CMVR Input Common-Mode Voltage

Range

VOL

Large Signal Voltage Gain VO= 0.15 to 2.2V, RL=2kΩ to V+/2 88

1.8V ≤ V

CMRR ≥ 80 dB

CMRR ≥ 78 dB

VO= 0.15 to 2.2V, RL=10kΩ to

Output Swing High RL=2kΩ to V+/2 70

RL=10kΩ to V+/2 60

Output Swing Low R

Output Short Circuit Current Sourcing to V

Supply Current Enable Mode V

=2kΩ to V+/2 30 70

=10kΩ to V+/2 15 60

−

VIN= 200 mV (Note 9)

Sinking to V

VIN= – 200 mV (Note 9)

2.1 0.95 1.3

Shutdown Mode V

0.4 0.03 1

7.5

5.0

Typ

(Note 4)

0.05 0.5

100

110

Max

(Note 5)

180

580

4 µV/˚C

1.5

1.6

Units

µV

mV from

µA

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