LTC1992 datasheet(1/24 Pages) LINER

部件名	LTC1992

功能描述	18-Bit, 1.6Msps, Pseudo-Differential Unipolar SAR

PDF	24 Pages

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制造商	LINER [Linear Technology]

网页	http://www.linear.com

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LTC2369-18

1

236918fa

18-Bit, 1.6Msps, Pseudo-

Differential Unipolar SAR

ADC with 96.5dB SNR

TYPICAL APPLICATION

FEATURES

DESCRIPTION

The LTC®2369-18 is a low noise, low power, high speed

18-bit successive approximation register (SAR) ADC.

Operating from a 2.5V supply, the LTC2369-18 has a 0V

to VREF pseudo-differential unipolar input range with VREF

ranging from 2.5V to 5.1V. The LTC2369-18 consumes only

18mW and achieves ±2.5LSB INL maximum, no missing

codes at 18 bits with 96.5dB SNR.

The LTC2369-18 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 1.6Msps

throughput with no cycle latency makes the LTC2369-18

ideally suited for a wide variety of high speed applications.

An internal oscillator sets the conversion time, easing exter-

nal timing considerations. The LTC2369-18 automatically

powers down between conversions, leading to reduced

power dissipation that scales with the sampling rate.

32k Point FFT fS = 1.6Msps, fIN = 2kHz

APPLICATIONS

n 1.6Msps Throughput Rate

n ±2.5LSB INL (Max)

n Guaranteed 18-Bit No Missing Codes

n Low Power: 18mW at 1.6Msps, 18μW at 1.6ksps

n 96.5dB SNR (Typ) at fIN = 2kHz

n –120dB THD (Typ) at fIN = 2kHz

n Guaranteed Operation to 125°C

n 2.5V Supply

n Pseudo-Differential Unipolar Input Range: 0V to VREF

n VREF Input Range from 2.5V to 5.1V

n No Pipeline Delay, No Cycle Latency

n 1.8V to 5V I/O Voltages

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

n Internal Conversion Clock

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

n Medical Imaging

n High Speed Data Acquisition

n Portable or Compact Instrumentation

n Industrial Process Control

n Low Power Battery-Operated Instrumentation

n 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. Protected by U.S. Patents including 7705765.

5.1Ω

VREF

0V

10nF

–

+

SAMPLE CLOCK

236918 TA01a

10μF

0.1μF

2.5V

REF

1.8V TO 5V

2.5V TO 5.1V

47μF

(X5R, 0805 SIZE)

REF

GND

CHAIN

RDL/SDI

SDO

SCK

BUSY

CNV

LTC2369-18

LT®6202

VDD

OVDD

IN+

IN–

FREQUENCY (kHz)

0

100 200 300 400

800

700

600

500

–180

–60

–40

–20

–80

–100

–120

–140

–160

0

236918 TA01b

SNR = 96.5dB

THD = –127dB

SINAD = 96.5dB

SFDR = 134dB

类似零件编号 - LTC1992

制造商	部件名	数据表	功能描述
Linear Technology	LTC1992	143Kb / 8P	2.5uA, 1% Accurate SOT-23 Comparator and Voltage Reference for Battery Monitoring
	LTC1992	513Kb / 40P	Low Power, Fully Differential Input/Output Amplifier/Driver Family
	LTC1992	415Kb / 24P	18-Bit, 1.6Msps, Low Power SAR ADC with 101dB SNR
	LTC1992	416Kb / 24P	16-Bit, 2Msps, Low Power SAR ADC with 96dB SNR
	LTC1992	364Kb / 22P	Precision, Low Power Rail-to-Rail Input/Output

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