Datasheet > LTC2376-20

LTC2376-20

更新时间： 2023-12-20 18:46:24

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
30页	1040K
描述
具 0.5ppm INL 的 20 位、250ksps、低功率 SAR ADC

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LTC2376-20 数据手册

LTC2376-20

20-Bit, 250ksps, Low Power

SAR ADC with 0.5ppm INL

FeaTures

DescripTion

The LTC^®2376-20 is a low noise, low power, high speed

20-bit successive approximation register (SAR) ADC. Op-

250ksps Throughput Rate

0ꢀ5ppꢁ INꢂ ꢃTyp)

Guaranteed 20-Bit No Missing Codes

ꢂow Power: 5ꢀ3ꢁW at 250ksps, 5ꢀ3µW at 250sps

erating from a 2.5V supply, the LTC2376-20 has a V

fully differential input range with V ranging from 2.5V

to 5.1V. The LTC2376-20 consumes only 5.3mW and

achieves 2ppm INL maximum, no missing codes at 20

bits with 104dB SNR.

REF

104dB SNR ꢃTyp) at f = 2kHz

–125dB THD ꢃTyp) at f = 2kHz

Digital Gain Coꢁpression ꢃDGC)

Guaranteed Operation to 85°C

2.5V Supply

The LTC2376-20 has a high speed SPI-compatible serial

interface that supports 1.8V, 2.5V, 3.3V and 5V logic

while also featuring a daisy-chain mode. The fast 250ksps

throughput with no cycle latency makes the LTC2376-20

ideally suited for a wide variety of high speed applications.

Aninternaloscillatorsetstheconversiontime,easingexter-

nal timing considerations. The LTC2376-20 automatically

powers down between conversions, leading to reduced

power dissipation that scales with the sampling rate.

Fully Differential Input Range V

REF

Input Range from 2.5V to 5.1V

REF

No Pipeline Delay, No Cycle Latency

1.8V to 5V I/O Voltages

SPI-Compatible Serial I/O with Daisy-Chain Mode

Internal Conversion Clock

16-Lead MSOP and 4mm × 3mm DFN Packages

The LTC2376-20 features a unique digital gain compres-

sion(DGC)function,whicheliminatesthedriveramplifier’s

negative supply while preserving the full resolution of the

ADC. When enabled, the ADC performs a digital scaling

applicaTions

Medical Imaging

High Speed Data Acquisition

Portable or Compact Instrumentation

Industrial Process Control

Low Power Battery-Operated Instrumentation

function that maps zero-scale code from 0V to 0.1 • V

REF

and full-scale code from V

to 0.9 • V . For a typical

REF

reference voltage of 5V, the full-scale input range is now

0.5V to 4.5V, which provides adequate headroom for

powering the driving amplifier from a single 5.5V supply.

ATE

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

SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the

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

7705765, 7961132, 8319673.

Typical applicaTion

Integral Nonlinearity vs Output Code

2.0

2.5V 1.8V TO 5V

1.5

10µF

0.1µF

1.0

0.5

CHAIN

RDL/SDI

SDO

SCK

BUSY

CNV

REF/DGC

6800pF

3300pF

6800pF

REF

10Ω

–

LTC2376-20

REF

–0.5

–1.0

–1.5

–2.0

SAMPLE CLOCK

REF

GND

REF

237620 TA01

2.5V TO 5.1V

47µF

(X7R, 1210 SIZE)

–524288 –262144

262144

524288

OUTPUT CODE

237620 TA02

237620fb

For more information www.linear.com/LTC2376-20

12 3 4 5 6 7...30

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