LTC2321-16

1

232116fa

For more information www.linear.com/LTC2321-16

Typical applicaTion

FeaTures

DescripTion

Dual, 16-Bit, 2Msps

Differential Input ADC with Wide

Input Common Mode Range

The LTC®2321-16 is a low noise, high speed dual 16-

bit successive approximation register (SAR) ADC with

differential inputs and wide input common mode range.

Operatingfromasingle3.3Vor5Vsupply,theLTC2321-16

applications which require a wide dynamic range with high

commonmoderejection.TheLTC2321-16achieves±4LSB

INL typical, no missing codes at 16 bits and 81dB SNR.

TheLTC2321-16hasanonboardlowdrift(20ppm/°Cmax)

2.048V or 4.096V temperature-compensated reference.

The LTC2321-16 also has a high speed SPI-compatible

serial interface that supports CMOS or LVDS. The fast

2Msps per channel throughput with no cycle latency

makes the LTC2321-16 ideally suited for a wide variety of

high speed applications. The LTC2321-16 dissipates only

31mW per channel and offers nap and sleep modes to

reduce the power consumption to 5μW for further power

savings during inactive periods.

applicaTions

n

2Msps Throughput Rate

n

±4LSB INL (Typ)

n

Guaranteed 16-Bit, No Missing Codes

n

Mode Range

n

n

n

No Cycle Latency

n

Guaranteed Operation to 125°C

n

Single 3.3V or 5V Supply

n

Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal

Reference

n

1.8V to 2.5V I/O Voltages

n

CMOS or LVDS SPI-Compatible Serial I/O

n

Power Dissipation 31mW/Ch (Typ)

n

Small 28-Lead (4mm × 5mm) QFN Package

n

High Speed Data Acquisition Systems

n

Communications

n

Remote Data Acquisition

n

Imaging

n

Optical Networking

n

Automotive

n

Multiphase Motor Control

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.

BIPOLAR

25

25

220pF

UNIPOLAR

INSTRUMENTATION

DIFFERENTIAL INPUTS

NO CONFIGURATION REQUIRED

DIFFERENTIAL

LTC2321-16

OGND

GND

1.8V TO 2.5V

232116 TA01a

10µF

3.3V OR 5V

SDO1

0V

0V

0V

0V

REFOUT2

VBYP1

REFOUT1

VBYP2

SDO2

CLKOUT

SCK

CNV

REFINT

CMOS/LVDS

1µF

TO CONTROL

LOGIC

(FPGA, CPLD,

DSP, ETC.)

1µF

1µF

10µF

10µF

232116 TA01b

FREQUENCY (MHz)

0

1

0.8

0.4

0.2

0.6

0

–20

–40

–60

–80

–100

–120

–140

SNR = 81.0dB

THD = –94.6dB

SINAD = 80.8dB

SFDR = 100.9dB