LTC2326-16

1

232616fa

For more information www.linear.com/LTC2326-16

+10.24V

–10.24V

–

+

SAMPLE CLOCK

232616 TA01a

10µF

0.1µF

5V

REF

1.8V TO 5V

47µF

REFBUF

GND

CHAIN

RDL/SDI

SDO

SCK

BUSY

CNV

LTC2326-16

2.2µF

100nF

REFIN

Typical applicaTion

FeaTures

DescripTion

16-Bit, 250ksps, ±10.24V

True Bipolar, Pseudo-Differential

Input ADC with 93.5dB SNR

The LTC®2326-16 is a low noise, high speed 16-bit suc-

cessive approximation register (SAR) ADC with pseudo-

differential inputs. Operating from a single 5V supply, the

LTC2326-16hasa±10.24Vtruebipolarinputrange,making

it ideal for high voltage applications which require a wide

dynamic range. The LTC2326-16 achieves ±1.5LSB INL

maximum, no missing codes at 16 bits with 93.5dB SNR.

The LTC2326-16 has an onboard single-shot capable

reference buffer and low drift (20ppm/°C max) 2.048V

temperature compensated reference. The LTC2326-16

also has a high speed SPI-compatible serial interface that

supports1.8V,2.5V,3.3Vand5Vlogicwhilealsofeaturing

a daisy-chain mode. The fast 250ksps throughput with

no cycle latency makes the LTC2326-16 ideally suited

for a wide variety of high speed applications. An internal

oscillator sets the conversion time, easing external timing

considerations. The LTC2326-16 dissipates only 28mW

and automatically naps between conversions, leading to

reduced power dissipation that scales with the sampling

rate. A sleep mode is also provided to reduce the power

consumption of the LTC2326-16 to 300μW for further

power savings during inactive periods.

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, 7961132.

applicaTions

n

250ksps Throughput Rate

n

±1.5LSB INL (Max)

n

Guaranteed 16-Bit No Missing Codes

n

Pseudo-Differential Inputs

n

True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V

n

n

n

Guaranteed Operation to 125°C

n

Single 5V Supply

n

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

n

Onboard Single-Shot Capable Reference Buffer

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

Power Dissipation 28mW (Typ)

n

16-Lead MSOP Package

n

Programmable Logic Controllers

n

Industrial Process Control

n

High Speed Data Acquisition

n

Portable or Compact Instrumentation

n

ATE

FREQUENCY (kHz)

–180

–60

–40

–20

–80

–100

–120

–140

–160

0

232616 TA01b

SNR = 93.5dB

THD = –113dB

SINAD = 93.4dB

SFDR = –117dB

0

25

50

75

125

100