LTC2321-16

1

232116fc

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.

Operating from a single 3.3V or 5V supply, the LTC2321-

for applications which require a wide dynamic range with

high common mode rejection. The LTC2321-16 achieves

±4LSB INL typical, no missing codes at 16 bits and 81dB

SNR.

The LTC2321-16 has an onboard low drift (20ppm/°C

max) 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 Analog

Devices, Inc. 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