LTC2446

更新时间： 2024-01-12 02:38:27

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
28页	303K
描述
24-Bit High Speed 8-Channel ΔΣ ADCs with Selectable Multiple Reference Inputs

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中文翻译

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技术参数
数据手册

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LTC2446 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	QFN	包装说明：	HVQCCN, LCC38,.2X.28,20
针数：	38	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.09	最大模拟输入电压：	2.75 V
最小模拟输入电压：	-0.05 V	最长转换时间：	0.17 µs
转换器类型：	ADC, DELTA-SIGMA	JESD-30 代码：	R-PQCC-N38
JESD-609代码：	e3	长度：	7 mm
湿度敏感等级：	1	模拟输入通道数量：	8
位数：	24	功能数量：	1
端子数量：	38	最高工作温度：	85 °C
最低工作温度：	-40 °C	输出位码：	BINARY
输出格式：	SERIAL	封装主体材料：	PLASTIC/EPOXY
封装代码：	HVQCCN	封装等效代码：	LCC38,.2X.28,20
封装形状：	RECTANGULAR	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	0.8 mm
子类别：	Analog to Digital Converters	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	30
宽度：	5 mm	Base Number Matches：	1

LTC2446 数据手册

LTC2446/LTC2447

24-Bit High Speed

8-Channel ∆Σ ADCs with

Selectable Multiple Reference Inputs

FEATURES

DESCRIPTIO

The LTC^®2446/LTC2447 4-terminal switching enables

■

Five Selectable Differential Reference Inputs

Four Differential/Eight Single-Ended Inputs

4-Way MUX for Multiple Ratiometric

Measurements

■

multiplexed ratiometric measurements. Four sets of se-

lectable differential inputs coupled with four sets of differ-

ential reference inputs allow multiple RTDs, bridges and

other sensors to be digitized by a single converter. A fifth

differential reference input can be selected for any input

channel not requiring ratiometric measurements (ther-

mocouples, voltages, current sense, etc.). The flexible

input multiplexer allows single-ended or differential in-

puts coupled with a slaved reference input or a universal

reference input.

■

Up to 8kHz Output Rate

Up to 4kHz Multiplexing Rate

Selectable Speed/Resolution:

2µV_RMSNoise at 1.76kHz Output Rate

200nV_RMSNoise at 13.8Hz Output Rate with

Simultaneous 50/60Hz Rejection

■

Guaranteed Modulator Stability and Lock-Up

Immunity for any Input and Reference Conditions

0.0005% INL, No Missing Codes

Autosleep Enables 20µA Operation at 6.9Hz

<5µV Offset (4.5V < V_CC< 5.5V, –40°C to 85°C)

Differential Input and Differential Reference with

GND to V_CCCommon Mode Range

No Latency Mode, Each Conversion is Accurate Even

After a New Channel is Selected

■

A proprietary delta-sigma architecture results in absolute

accuracy (offset, full-scale, linearity) of 15ppm, noise as

low as 200nV_RMSand speeds as high as 8kHz. Through a

simple 4-wire interface, ten speed/resolution combina-

tions can be selected. The first conversion following a

speed, resolution, channel change or reference change is

valid since there is no settling time between conversions,

enabling scan rates of up to 4kHz. Additionally, a 2x mode

can be selected for any speed-enabling output rates up to

8kHz with one cycle of latency.

■

Internal Oscillator—No External Components

LTC2447 Includes MUXOUT/ADCIN for External

Buffering or Gain

■

^{Tiny QFN 5mm x}U^{7mm Package}

, LTC and LT are registered trademarks of Linear Technology Corporation.

Protected by U.S. Patents, including 6140950, 6169506, 6208279, 6411242, 6639526

APPLICATIO S

■

Flow

■

Weight Scales

■

Pressure

■

Direct Temperature Measurement

■

Gas Chromatography

TYPICAL APPLICATIO

LTC2446 Speed vs RMS Noise

100

Multiple Ratiometric Measurement System

= 5V

REF

–

= V = 0V

2x SPEED MODE

LTC2446

NO LATENCY MODE

REF

2.8µV AT 880Hz

280nV AT 6.9Hz

(50/60Hz REJECTION)

–

•

19-INPUT

4-OUTPUT

MUX

SDI

SDO

SCK

VARIABLE SPEED/

RESOLUTION 24-BIT

–

∆Σ ADC

–

REF

0.1

100

1000

10000

CONVERSION RATE (Hz)

24467 TA01

24467 TA02

24467fa

12 3 4 5 6 7...28

中文翻译

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与LTC2446相关器件

型号	品牌	获取价格	描述	数据表
LTC2446_15	Linear	获取价格	24-Bit High Speed 8-Channel ADCs with Selectable Multiple Reference Inputs
LTC2446CUHF	Linear	获取价格	24-Bit High Speed 8-Channel ΔΣ ADCs with Sele
LTC2446CUHF#PBF	Linear	获取价格	LTC2446 - 24-Bit High Speed 8-Channel Delta Sigma ADCs with Selectable Multiple Reference
LTC2446CUHF#TR	Linear	获取价格	LTC2446 - 24-Bit High Speed 8-Channel Delta Sigma ADCs with Selectable Multiple Reference
LTC2446CUHF#TRPBF	Linear	获取价格	LTC2446 - 24-Bit High Speed 8-Channel Delta Sigma ADCs with Selectable Multiple Reference
LTC2446IUHF	Linear	获取价格	24-Bit High Speed 8-Channel ΔΣ ADCs with Sele
LTC2446IUHF#TRPBF	Linear	获取价格	LTC2446 - 24-Bit High Speed 8-Channel Delta Sigma ADCs with Selectable Multiple Reference
LTC2447	Linear	获取价格	24-Bit High Speed 8-Channel ΔΣ ADCs with Sele
LTC2447	ADI	获取价格	具可选多个基准输入的 24 位、高速、8 通道 ΔΣ ADC
LTC2447_15	Linear	获取价格	24-Bit High Speed 8-Channel ADCs with Selectable Multiple Reference Inputs

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