Datasheet > LTC2378-16

LTC2378-16

更新时间： 2022-03-23 01:26:16

品牌	Logo	应用领域
LINEAR_DIMENSIONS		/
页数	文件大小	规格书
24页	765K
描述
16-Bit, 1Msps, Low Power SAR ADC with 97dB SNR

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LTC2378-16 数据手册

LTC2378-16

16-Bit, 1Msps, Low Power

SAR ADC with 97dB SNR

FeaTures

DescripTion

The LTC^®2378-16 is a low noise, low power, high speed

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

1Msps Throughput Rate

±±0.5Sꢀ IN5 ꢁMaꢂx

Guaranteed 16-ꢀit No Missing Codes

erating from a 2.5V supply, the LTC2378-16 has a ±V

fully differential input range with V ranging from 2.5V

to 5.1V. The LTC2378-16 consumes only 13.5mW and

achieves ±±.5LSꢀ ꢁIL maximum, no missing codes at

16 bits with 97dꢀ SIR.

REF

5ow Power: 130.mW at 1Msps, 130.µW at 1ksps

REF

97dꢀ SNR ꢁTypx at f = 2kHz

–122dꢀ THD ꢁTypx at f = 2kHz

Digital Gain Compression ꢁDGCx

Guaranteed Operation to 125°C

The LTC2378-16 has a high speed SPꢁ-compatible serial

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

alsofeaturingadaisy-chainmode.Thefast1Mspsthrough-

put with no cycle latency makes the LTC2378-16 ideally

suited for a wide variety of high speed applications. An

internaloscillatorsetstheconversiontime,easingexternal

timingconsiderations.TheLTC2378-16automaticallypow-

ers down between conversions, leading to reduced power

dissipation that scales with the sampling rate.

2.5V Supply

Fully Differential ꢁnput Range ±V

REF

ꢁnput Range from 2.5V to 5.1V

REF

Io Pipeline Delay, Io Cycle Latency

1.8V to 5V ꢁ/O Voltages

SPꢁ-Compatible Serial ꢁ/O with Daisy-Chain Mode

ꢁnternal Conversion Clock

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

applicaTions

The LTC2378-16 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

Medical ꢁmaging

High Speed Data Acquisition

Portable or Compact ꢁnstrumentation

ꢁndustrial Process Control

Low Power ꢀattery-Operated ꢁnstrumentation

ATE

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

±.5V to 4.5V, which provides adequate headroom for

powering the driving amplifier from a single 5.5V supply.

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.

Typical applicaTion

32k Point FFT f_S= 1Msps, f_IN= 2kHz

2.5V 1.8V TO 5V

SNR = 97.2dB

–20

–40

THD = –121.7dB

SINAD = 97.1dB

SFDR = 128dB

10µF

0.1µF

CHAIN

RDL/SDI

SDO

6800pF

3300pF

6800pF

REF

20Ω

–60

–

–80

LTC2378-16

SCK

REF

BUSY

CNV

REF/DGC

–100

–120

–140

–160

–180

SAMPLE CLOCK

REF

GND

REF

237816 TA01

2.5V TO 5.1V

47µF

(X5R, 0805 SIZE)

100

200

300

400

500

FREQUENCY (kHz)

237816 TA02

237816f

12 3 4 5 6 7...24

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