LTC2391-16



239116f

TYPICAL APPLICATION

DesCrIPTION

16-Bit, 250ksps SAR ADC

with 94dB SNR

cessive approximation register (SAR) ADC. Operating

from a single 5V supply, the LTC2391-16 supports a large

±4.096V fully differential input range, making it ideal for

high performance applications which require maximum

dynamicrange.TheLTC2391-16achieves±2LSBINLmax,

no missing codes at 16-bits and 94dB SNR (typ).

The LTC2391-16 includes a precision internal reference

with a guaranteed 0.5% initial accuracy and a ±20ppm/°C

(max) temperature coefficient. Fast 250ksps throughput

with no cycle latency in both parallel and serial interface

modes makes the LTC2391-16 ideally suited for a wide

variety of high speed applications. An internal oscillator

sets the conversion time, easing external timing consider-

ations.TheLTC2391-16dissipatesonly95mWat250ksps,

whilebothnapandsleeppower-downmodesareprovided

to further reduce power during inactive periods.

FeATures

APPLICATIONs

n

250ksps Throughput Rate

n

±2LSB INL (Max)

n

Guaranteed 16-Bit No Missing Codes

n

n

Guaranteed Operation to 125°C

n

Single 5V Supply

n

1.8V to 5V I/O Voltages

n

95mW Power Dissipation

n

±4.096V Differential Input Range

n

Internal Reference (20ppm/°C Max)

n

No Pipeline Delay, No Cycle Latency

n

Parallel and Serial Interface

n

Internal Conversion Clock

n

48-Pin 7mm

× 7mm LQFP and QFN Packages

n

Medical Imaging

n

High Speed Data Acquisition

n

Digital Signal Processing

n

Industrial Process Control

n

Instrumentation

n

ATE

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.

5V

0.1µF

10µF

5V

0.1µF

10µF

SER/PAR

BYTESWAP

OB/2C

CS

RD

BUSY

PARALLEL

OR

SERIAL

INTERFACE

OGND

239116 TA01

2200pF

249

249

ANALOG INPUT

0V TO 4.096V

SINGLE-ENDED-

TO-DIFFERENTIAL

DRIVER

GND

RESET

CNVST PD

SAMPLE CLOCK

REFOUT

REFIN

AVP

DVP

LTC2391-16

OVP

1.8V TO 5V

16 BIT

VCM

1µF

10µF

4.7µF

LT6350

FREQUENCY (kHz)

0

–180

–160

–120

–100

–80

50

100

125

0

239116 G08

–140

25

75

–60

–40

–20

SNR = 94dB

THD –103dB

SINAD = 93.5dB

SFDR = 104dB