Datasheet > LTC2379-18

LTC2379-18

更新时间： 2022-11-16 11:18:16

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
24页	2836K
描述
18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR

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LTC2379-18 数据手册

LTC2379-18

18-Bit, 1.6Msps, Low Power

SAR ADC with 101.2dB SNR

FEATURES

DESCRIPTION

The LTC^®2379-18 is a low noise, low power, high speed

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

1.6Msps Throughput Rate

2ꢀSꢁ INꢀ ꢂMaꢃx

Guaranteed 18-ꢁit No Missing Codes

erating from a 2.5V supply, the LTC2379-18 has a V

fullydifferentialinputrangewithV rangingfrom2.5Vto

5.1V.TheLTC2379-18consumesonly18mWandachieves

2LSꢀ ꢁIL maximum, no missing codes at 18-bits with

101.2dꢀ SIR.

REF

ꢀow Power: 18mW at 1.6Msps, 18µW at 1.6ksps

REF

101.2dꢁ SNR ꢂtypx at f = 2kHz

–120dꢁ THD ꢂtypx at f = 2kHz

Digital Gain Compression ꢂDGCx

Guaranteed Operation to 125°C

The LTC2379-18 has a high speed SPꢁ-compatible se-

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

while also featuring a daisychain mode. The fast 1.6Msps

throughput with no cycle latency makes the LTC2379-18

ideally suited for a wide variety of high speed applications.

Aninternaloscillatorsetstheconversiontime,easingexter-

nal timing considerations. The LTC2379-18 automatically

powers 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 Daisychain Mode

ꢁnternal Conversion Clock

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

The LTC2379-18 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 ꢁ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

0.5V 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= 1.6Msps, f_IN= 2kHz

2.5V 1.8V TO 5V

10µF

SNR = 101.2dB

–20

–40

THD = –120dB

SINAD = 101.1dB

SFDR = 121dB

0.1µF

–60

CHAIN

RDL/SDI

SDO

SCK

BUSY

CNV

3300pF

REF

20Ω

–

–80

–

–100

–120

–140

–160

–180

LTC2379-18

REF

SAMPLE CLOCK

REF/DGC

REF

GND

REF

237918 TA01

2.5V TO 5.1V

47µF

(X5R, 0805 SIZE)

100 200 300 400 500 600 700 800

FREQUENCY (kHz)

237918 TA02

237918f

12 3 4 5 6 7...24

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与LTC2379-18相关器件

型号	品牌	描述	获取价格	数据表
LTC2379-18_11	Linear	18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR	获取价格
LTC2379CDE-18	Linear Systems	LTC2379-1818-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR	获取价格
LTC2379CDE-18#PBF	Linear	LTC2379-18 - 18-Bit, 1.6Msps, Low Power SAR ADC with 101dB SNR; Package: DFN; Pins: 16; Te	获取价格
LTC2379CDE-18#TRPBF	Linear	LTC2379-18 - 18-Bit, 1.6Msps, Low Power SAR ADC with 101dB SNR; Package: DFN; Pins: 16; Te	获取价格
LTC2379CDE-18PBF	Linear	18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR	获取价格
LTC2379CDE-18TRPBF	Linear	18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR	获取价格

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