Datasheet > LTC2472_15

LTC2472_15

更新时间： 2024-09-25 01:20:51

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
22页	383K
描述
Selectable 208sps/833sps, 16-Bit ADCs with 10ppm/C Max Precision Reference

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中文翻译

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LTC2472_15 数据手册

LTC2470/LTC2472

Selectable 208sps/833sps,

16-Bit ΔΣ ADCs with 10ppm/°C

Max Precision Reference

DescripTion

FeaTures

TheLTC^®2470/LTC2472aresmall,16-bitanalog-to-digital

16-Bit Resolution

Internal, High Accuracy Reference—10ppm/°C (Max)

Single-Ended (LTC2470) or Differential (LTC2472)

Selectable 208sps/833sps Output Rate

1mV Offset Error

converters with an integrated precision reference and

a selectable 208sps or 833sps output rate. They use a

single 2.7V to 5.5V supply and communicate through a

SPI Interface. The LTC2470 is single-ended with a 0V to

V_REFinput range and the LTC2472 is differential with a

V_REFinput range. Both ADC’s include a 1.25V integrated

referencewith2ppm/°Cdriftperformanceand0.1%initial

accuracy. The converters are available in a 12-pin DFN

3mm × 3mm package or an MSOP-12 package. They

include an integrated oscillator and perform conversions

withnolatencyformultiplexedapplications.TheLTC2470/

LTC2472 include a proprietary input sampling scheme

that reduces the average input current several orders of

magnitude when compared to conventional delta sigma

converters.

0.01% Gain Error

Single Conversion Settling Time for Multiplexed

Applications

Single-Cycle Operation with Auto Shutdown

3.5mA (Typ) Supply Current

2µA (Max) Sleep Current

Internal Oscillator—No External Components

Required

SPI Interface

Small 12-Lead, 3mm × 3mm DFN and MSOP

Packages

Following a single conversion, the LTC2470/LTC2472

automatically power down the converter and can also be

conﬁgured to power down the reference. When both the

ADC and reference are powered down, the supply current

is reduced to 200nA.

applicaTions

System Monitoring

Environmental Monitoring

Direct Temperature Measurements

Instrumentation

The LTC2470/LTC2472 include a user selectable 208sps

or 833sps output rate and due to a large oversampling

ratio (8,192 at 208sps and 2,048 at 833sps) have relaxed

anti-aliasing requirements.

Industrial Process Control

Data Acquisition

Embedded ADC Upgrades

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

No Latency ∆∑ is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners. Protected by U.S. Patents, including 6208279, 6411242,

7088280, 7164378.

Typical applicaTion

V_REFvs Temperature

1.2520

2.7V TO 5.5V

1.2515

1.2510

1.2505

1.2500

1.2495

1.2490

1.2485

1.2480

0.1µF

COMP

0.1µF

10µF

0.1µF

10k

REFOUT

SCK

–

10k

SPI

INTERFACE

LTC2472

SDO

0.1µF

–

REF

GND

24702 TA01a

–50 –30 –10 10

TEMPERATURE (°C)

24702 TA01b

24702fb

For more information www.linear.com/LTC2470

12 3 4 5 6 7...22

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