LMP8350

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SNOSB80B – FEBRUARY 2011 – REVISED MARCH 2013

LMP8350 Ultra Low Distortion Fully Differential Precision ADC Driver with Selectable

Power Modes

Check for Samples: LMP8350

1

FEATURES

DESCRIPTION

The

LMP8350

is

an

ultra

low

distortion

fully

234

•

Differential Input and Output

differential

amplifier

designed

for

driving

high-

•

Tri-Level Power Settings with Shutdown

performance precision analog-to-digital converters

•

Ultra Low HD2/HD3 and THD+N Distortion

(ADC). As part of the PowerWise™ family, a unique

mode enable pin allows the user to choose from three

•

Adjustable Output Common Mode Level

different

operating

modes,

trading

power

•

Fully Balanced Differential Architecture

consumption for dynamic performance.

•

Single or Dual Supply Operation

The high power mode is optimized for highest AC

performance. The low noise, wide bandwidth and fast

APPLICATIONS

slew rate makes the LMP8350 ideal for driving 24bit

•

High Resolution Differential ADC Driver

ADCs with input sampling rates of 10MHz or less.

The medium power mode is optimized for precision

•

Portable instrumentation

DC performance, and can be used to drive 24-bit

•

Precision Line Driver

ADCs with input sampling rates of 6MHz or less. The

low

power

mode

is

a

trade-off

between

AC

KEY SPECIFICATIONS

performance

and

quiescent

current

for

power

sensitive applications. The disable mode fully shuts-

down the amplifier for further standby power savings.

values unless otherwise specified)

The fully differential architecture of this device allows

•

Operating Voltage Range 4.5V to 12V

for easy implementation of a single-ended to fully-

•

Supply Current 3 to 13mA

differential output conversion. Driving a 3Vpp, 1kHz

•

Total THD+N @ 1KHz 0.000097%

output sine wave with the amplifier powered by ±3.3V

•

HD2 / HD3 Distortion @ 1KHz < –124 dBc

rails in high power mode yields 0.000098% THD+N.

•

Bandwidth 118 mHz

The LMP8350 is part of the LMP™ precision amplifier

family. It is offered in the 8-Pin SOIC package and

•

Settling to 0.1% 20 ns

has an operating temperature range of

−40°C to

•

Low Offset Drift 0.4 µV/°C

+85°C.

•

Offset Voltage 80µV

•

Voltage Noise 4.6nV/Hz

•

Operating temperature range

−40°C to +85°C

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

LMP is a trademark of Texas Instruments.

3

PowerWise is a trademark of National Semiconductor Corporation.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.