LINEAR TECHNOLOGY LTC2389-18 Technical data

18-Bit, 2.5Msps SAR ADC

4.096V

100dB SNR

Pseudo-Differential

Unipolar 0V to 4.096V

0V

+

IN

–

IN

5V

–40°C to +125°C

Guaranteed

+

IN

IN

OVDD = 1.8V to 5V

LTC2389-18

–

Internal

Reference

Parallel I/O

Fully Differential

±4.096V

4.096V

0V

4.096V

0V

+

IN

–

IN

Pin-Configurable

Input Range

4.096V

Pseudo-Differential

Bipolar ±2.048V

0V

2.048V

+

IN

–

IN

Pin-Configurable Fully Differential or Pseudo-Differential Input Range

Features

n

18-Bit/16-Bit No Latency, 2.5Msps Pin- and Timing-Compatible SAR ADCs

n

Wide ±4.096V Fully Differential Inputs Maximize Dynamic Range to Achieve 100dB SNR Performance

n

Pin-Configurable Input Ranges ±4.096V, ±2.048V or 0V to 4.096V Allow Flexibility in the Input Signal Chain

n

Precision DC Specifications Feature ±3LSB INL (Max) and 18 Bits No Missing Codes Resolution

n

Precision 20ppm/°C (Max) Internal Reference and Reference Buffer Reduce External Components and Save Board Space

SPI or

18-Bit/16-Bit Pin-Compatible Serial/Parallel I/O SAR ADCs

Power

Consumption Packages

162.5mW100dB

48-Pin

7mm × 7mm

LQFP and QFN

162.5mW96dB

18-Bit

16-Bit

2.5Msps SNR

2389-18

2389-16

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.

General Purpose SAR ADCs

250ksps to 450ksps 500ksps to 800ksps 1Msps

1.25Msps to 1.6Msps 2Msps to 2.8Msps 3Msps to 3.5Msps

100ksps to 200ksps

12-Bit to 18-Bit Resolution, 100ksps Up to 3.5Msps

18-Bit

16-Bit

14-Bit

1-Ch2-Ch

1864L

1605-1 1605-2

1865L

1856

8-Ch8-Ch

1867L

2-Ch

6-Ch

2376-18

1864

1606

1865

2376-16

2381-16

2391-16

1609

1605

1859

1867

1418

1603

1417

2364-18

2364-16

1604

1416

2377-18

2377-16

2382-16

2392-16

1608

1419

1408-14

2367-18

2367-16

2378-18

2378-16

2383-16

2393-16

2368-18

2368-16

2379-18 2369-18

2351-14

2380-16

1403A

1414

2389-18

2389-16

2370-16

1403A-1

1411

2356-14

1407A

2355-14

1407A-1

12-Bit

1855

2360

1860L

2-Ch8-Ch 6-Ch 1-Ch1-Ch1-Ch

1861L

1854

1863L

Serial

16- and 18-Bit 250ksps to 2Msps
Pin-Compatible ADCs

5V SPI ADCs in Tiny
DFN/QFN

0V to 2.5V, ±1.25V Unipolar/Bipolar
Input ADCs in MSOP-10

3V Pin-Compatible ADCs
in TSOT-6/TSOT-8 Packages

0V to 4V, ±2V Unipolar/Bipolar
Inputs with 5V, ±5V Supply

1858

1401

1857

1863

2361

1860

1861

1853

1400

Simultaneous
Sampling ADCs

±10V Bipolar
Input ADCs

0V to 2.048V Input,
ADC in SO-8

3V/5V µPower ADCs

2362

1404

2302

2306

1408-12

2308

2365

1409

Pseudo- or Fully Differential
Pin-Compatible ADCs

Fully Differential
Pin-Compatible ADCs

0V to 4.096V, ±2.048V
Unipolar/Bipolar Inputs with
5V or ±5V Supply

1410

1415

2351-12

1851

ParallelSerial/Parallel

Bipolar ±10V
Input ADCs

3V/5V µPower ADCs

0V to 4V, ±4V Unipolar/Bipolar
Inputs with Single ±5V Supply

1402

1403

1403-1

2366

1412

2355-12

2356-12

1407

1407-1

±2.5V Bipolar Inputs
with Single ±5V Supply

±1.8V SoftSpan™ Input
with 5V Supply

www.linear.com/2389-18 n 1-800-4-LINEAR

0412B