Datasheet > LND3045

LND3045

更新时间： 2024-10-19 11:58:59

品牌	Logo	应用领域
LINEAR_DIMENSIONS		传感器
页数	文件大小	规格书
1页	68K
描述
Analog Sensor Interface Chip- SAR ADC with SPI

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LND3045 数据手册

DATA SHEET

LND3045

Analog Sensor Interface Chip- SAR ADC with SPI

Interface, Speed Sensor & PTAT

GENERAL DESCRIPTION

FEATURES

LND3045 is an analog chip prototype, which consists of

five 12-bit and one 16-bit Successive Approximation

SPI Interface, a speed sensor and a Proportional To

Absolute Temperature (PTAT) circuit. LND3045 provides

a complete front-end solution for high temperature

sensor applications including LVDTs and Resolvers.



Complete Frond-End for LVDTs and

Resolvers up to 16-bit data collection

Includes four 12-bit resolution SAR

ADCs and one 16-bit resolution SAR

ADC with differential inputs

On-chip bias voltage references

Built-in PTAT which acts as

temperature sensor



Analog input range to SAR ADC can vary from V_DDto

V_SS. ADC normally remains in shutdown mode, powering

up only for the conversions. This process of conversion

is controlled by enable pin of the ADC and this results in

a lot of power saving.



SPI standard interface

Operating temperature range of 27^oC to

200^oC



Clock Speed of 1MHz or Higher

Maximum power dissipation of 23 mW

under a supply voltage of 3.3V

48-pin DIP package

Excellent Monotonicity and Linearity

over Temperature

All the bias voltages required for proper functioning of

various internal components are generated inside the

chip which eliminates the use of external voltage

references.



LND3045 provides a serial interface, which is compatible

with SPI. Proportional to absolute temperature (PTAT)

circuit acts as a temperature sensor that monitors the

ambient temperature. Output of PTAT circuit is

connected to one of the 12-bit SAR ADC. Speed sensor

generates a pulse each time when a peak is detected in

the applied differential input.

APPLICATIONS



LVDT & Resolver Front-End Interface

Digital Signal Processing

Industrial Process Control

Battery Powered Systems

LND3045 is available in a 48-pin DIP package, and it

operates over a temperature range of 27^oC to 200^oC.

PRODUCT HIGHLIGHTS



Five analog differential input channels

for SAR ADCs



SPI serial interface

On-chip temperature sensor

Bias voltages derived inside the chip

Temperature insensitive operation

 Linear Dimensions, Inc.  445 East Ohio Street, Chicago IL 60611 USA  tel 312.404.9283  fax 312.321.1830  www.lineardimensions.com 

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