ltc2383-16 Linear Technology Corporation, ltc2383-16 Datasheet

ltc2383-16

Manufacturer Part Number

ltc2383-16

Description

16-bit, 1msps, Low Power Sar Adc With Serial Interface Features

Manufacturer

Linear Technology Corporation

Datasheet

1.LTC2383-16.pdf (24 pages)

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FEATURES

APPLICATIONS

TYPICAL APPLICATION

1Msps Throughput Rate

±2LSB INL (Max)

Guaranteed 16-Bit No Missing Codes

Low Power: 13mW at 1Msps, 13μW at 1ksps

92dB SNR (typ) at f

Guaranteed Operation to 125°C

2.5V Supply

Fully Differential Input Range ±2.5V

External 2.5V Reference Input

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-pin MSOP and 4mm × 3mm DFN Packages

Medical Imaging

High Speed Data Acquisition

Portable or Compact Instrumentation

Industrial Process Control

Low Power Battery-Operated Instrumentation

ATE

TO-DIFFERENTIAL

SINGLE-ENDED-

ANALOG INPUT

0V TO 2.5V

DRIVER

LT6350

50Ω

3300pF

= 20kHz

100Ω

–

10μF

2.5V

LTC2383-16

2.5V

REF

47μF

(X5R, 0805 SIZE)

1.8V TO 5V

GND

RDL/SDI

CHAIN

BUSY

SDO

SCK

CNV

23816 TA01

SAR ADC with Serial Interface

0.1μF

DESCRIPTION

The LTC

16-bit successive approximation register (SAR) ADC.

Operating from a 2.5V supply, the LTC2383-16 has a

±2.5V fully differential input range. The LTC2383-16

consumes only 13mW and achieves ±2LSB INL max, no

missing codes at 16-bits and 92dB SNR.

The LTC2383-16 has a high speed SPI-compatible serial

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

while also featuring a daisychain mode. The fast 1Msps

throughput with no cycle latency makes the LTC2383-16

ideally suited for a wide variety of high speed applica-

tions. An internal oscillator sets the conversion time,

easing external timing considerations. The LTC2383-16

automatically powers down between conversions, lead-

ing to reduced power dissipation that scales with the

sampling rate.

LTC238X-16 SAR ADC Family

PART NUMBER

LTC2383-16

LTC2382-16

LTC2381-16

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

Technology Corporation. All other trademarks are the property of their respective owners.

SAMPLE CLOCK

16-Bit, 1Msps, Low Power

2383-16 is a low noise, low power, high speed

–100

–120

–140

–160

–180

RESOLUTION

–20

–40

–60

–80

32k Point FFT f

100

FREQUENCY (kHz)

LTC2383-16

200

= 1Msps, f

500ksps

250ksps

SPEED

1Msps

300

SNR = 92.2dB

THD = –106.2dB

SINAD = 92dB

SFDR = 110.4dB

400

= 20kHz

3.25mW

POWER

6.5mW

13mW

238316 TA02

238316f

500

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