LMP8350MASLASHNOPB.A中文资料德州仪器数据手册PDF规格书

1 Features

1• Differential Input and Output

• Tri-Level Power Settings with Shutdown

• Ultra Low HD2/HD3 and THD+N Distortion

• Adjustable Output Common-Mode Level

• Fully-Balanced Differential Architecture

• Single- or Dual-Supply Operation

• Operating Voltage Range 4.5 V to 12 V

• Supply Current 3 mA to 13 mA

• Total THD+N at 1 KHz 0.000097%

• HD2 / HD3 Distortion at 1 KHz < –124 dBc

• Bandwidth 118 mHz

• Settling to 0.1% 20 ns

• Low Offset Drift 0.4 μV/°C power•

Offset Voltage 80 μV

• Voltage Noise 4.6 nV/Hz

• Operating Temperature Range −40°C to +85°C

2 Applications

• High-Resolution Differential ADC Drivers

• Portable Instrumentation

• Precision Line Drivers

3 Description

The LMP8350 device is an ultra low distortion fully-

differential amplifier designed for driving high- performance precision analog-to-digital converters

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

mode enable pin allows the user to choose from three

different operating modes, trading power consumption for dynamic performance.

The high power mode is optimized for highest AC performance. The low noise, wide bandwidth, and

fast slew rate make the LMP8350 ideal for driving 24-

bit ADCs with input sampling rates of 10 MHz or less.

The medium power mode is optimized for precision

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

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

low power mode is a trade-off between AC

performance and quiescent current for power•

sensitive applications. The disable mode fully shuts down the amplifier for further standby power savings.

The fully differential architecture of this device allows for easy implementation of a single-ended to fullydifferential

output conversion. Driving a 3-Vpp, 1-kHz

output sine wave with the amplifier powered by ±3.3-

V rails in high power mode yields 0.000098%

THD+N.

The LMP8350 is part of the LMP™ precision amplifier

family, and is offered in the 8-pin SOIC package, with

an operating temperature range of −40°C to +85°C.