Datasheet > LTC2439-1

LTC2439-1

更新时间： 2023-12-20 18:46:22

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
30页	569K
描述
8 通道 / 16 通道、16 位、无延迟增量累加 ΔΣ ADC

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LTC2439-1 数据手册

LTC2439-1

8-/16-Channel

16-Bit No Latency ∆Σ™ ADC

FEATURES

DESCRIPTION

TheLTC^®2439-1isa16-channel(8-differential)micropower

16-bit∆Σanalog-to-digitalconverter.Itoperatesfrom2.7V

to 5.5V and includes an integrated oscillator, 0.12LSB

INL and 1µV RMS noise. It uses delta-sigma technology

and provides single cycle settling time for multiplexed

applications. Through a single pin, the LTC2439-1 can be

configuredforbetterthan87dBdifferentialmoderejection

at 50Hz and 60Hz 2ꢀ, or it can be driven by an external

oscillator for a user-defined rejection frequency. The

internal oscillator requires no external frequency setting

components.

16-Channel Single-Ended or 8-Channel Differential

Inputs

Low Supply Current (200µA, 4µA in Autosleep)

Rail-to-Rail Differential Input/Reference

16-Bit No Missing Codes

1µV RMS Noise, 16-ENOBS Independent of V

Very Low Transition Noise: Less Than 0.02LSB

Operates with a Reference as Low as 100mV with

1.5µV LSB Step Size

REF

Guaranteed Modulator Stability and Lock-Up

Immunity for Any Input and Reference Conditions

Single Supply 2.7V to 5.5V Operation

Internal Oscillator—No External Components

Required

87dB Min, 50Hz and 60Hz Simultaneous Notch Filter

Pin Compatible with the 24-Bit LTC2418

28-Lead SSOP Packag

The LTC2439-1 accepts any external differential reference

voltagefrom0.1VtoV forflexibleratiometricandremote

sensing measurement applications. It can be configured

to take 8 differential channels or 16 single-ended chan-

nels. The full-scale bipolar input range is from –0.5V

REF

to0.5V . Thereferencecommonmodevoltage, V

REF

REFCM

and the input common mode voltage, V

, may be in-

INCM

APPLICATIONS

dependently set between GND and V . The DC common

Direct Sensor Digitizer

mode input rejection is better than 140dB.

Weight Scales

The LTC2439-1 communicates through a flexible

4-wire digital interface that is compatible with SPI and

MICROWIRE protocols.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No

Latency ∆Σ is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

Direct Temperature Measurement

Gas Analyzers

Strain Gauge Transducers

Instrumentation

Data Acquisition

Industrial Process Control

TYPICAL APPLICATION

Minimum Resolvable

Signal vs V_REF

2.7V TO 5.5V

1µF

REF

21 CH0

22 CH1

= EXTERNAL OSCILLATOR

= 50Hz and 60Hz REJECTION

•

28 CH7

SDI

SCK

SDO

16-CHANNEL

MUX

CH8

–

DIFFERENTIAL

16-BIT ∆Σ ADC

4-WIRE

SPI INTERFACE

THERMOCOUPLE

•

CH15

10 COM

–

12 REF

(V)

GND

LTC2439-1

24361 TA02

REF

*FOR V

REF

= 0.4V RESOLUTION IS LIMITED BY STEP SIZE

241418 TA01a

24391fb

For more information www.linear.com/LTC2439-1

12 3 4 5 6 7...30

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与LTC2439-1相关器件

型号	品牌	描述	获取价格	数据表
LTC2439-1CGN	Linear	8-/16-Channel 16-Bit No Latency Delta-Sigma ADC	获取价格
LTC2439-1CGN#PBF	Linear	LTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC; Package: SSOP; Pins: 28; Temp	获取价格
LTC2439-1CGN#TRPBF	Linear	LTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC; Package: SSOP; Pins: 28; Temp	获取价格
LTC2439-1IGN	Linear	8-/16-Channel 16-Bit No Latency Delta-Sigma ADC	获取价格
LTC2439-1IGN#PBF	Linear	LTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC; Package: SSOP; Pins: 28; Temp	获取价格
LTC2439-1IGN#TR	Linear	LTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC; Package: SSOP; Pins: 28; Temp	获取价格

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