LTC2314-14

1

231414f

For more information www.linear.com/2314-14

Typical applicaTion

FeaTures

DescripTion

14-Bit, 4.5Msps Serial

Sampling ADC in TSOT

TheLTC®2314-14isa14-bit,4.5Msps,serialsamplingA/D

converter that draws only 6.2mA from a wide range analog

supply adjustable from 2.7V to 5.25V. The LTC2314-14

containsanintegratedbandgapandreferencebufferwhich

provide a low cost, high performance (20ppm/°C max)

and space saving applications solution. The LTC2314-14

achieves outstanding AC performance of 77dB SINAD and

–85dB THD while sampling a 500kHz input frequency.

The extremely high sample rate-to-power ratio makes the

LTC2314-14 ideal for compact, low power, high speed

systems. The LTC2314-14 also provides both nap and

sleep modes for further optimization of the device power

within a system.

The LTC2314-14 has a high-speed SPI-compatible serial

interface that supports 1.8V, 2.5V, 3V and 5V logic. The

fast 4.5Msps throughput makes the LTC2314-14 ideally

suited for a wide variety of high speed applications.

applicaTions

n

4.5Msps Throughput Rate

n

Guaranteed 14-Bit No Missing Codes

n

Internal Reference: 2.048V/4.096V Span

n

Low Noise: 77.5dB SNR

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Low Power: 6.2mA at 4.5Msps and 5V

n

Dual Supply Range: 3V/5V operation

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Sleep Mode with < 1µA Typical Supply Current

n

Nap Mode with Quick Wake-up < 1 conversion

n

Separate 1.8V to 5V Digital I/O Supply

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High Speed SPI-Compatible Serial I/O

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Guaranteed Operation from –40°C to 125°C

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8-Lead TSOT-23 Package

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Communication Systems

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High Speed Data Acquisition

n

Handheld Terminal Interface

n

Medical Imaging

n

Uninterrupted Power Supplies

n

Battery Operated Systems

n

Automotive

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 Supply, Internal Reference, 4.5Msps, 14-bit Sampling ADC

SERIAL DATA LINK TO

ASIC, PLD, MPU, DSP

OR SHIFT REGISTERS

ANALOG INPUT

0V TO 4.096V

5V

2.2µF

2.2µF

2.2µF

231414 TA01

GND

REF

SCK

CS

SDO

LTC2314-14

DIGITAL OUTPUT SUPPLY

1.8V TO 5V

231414 TA01a

FREQUENCY (kHz)

0

2250

1750 2000

750 1000

500

250

1250 1500

0

–20

–40

–60

–80

–100

–120

–160

–140

SNR = 77.5dBFS

SINAD = 76.9dBFS

THD = 84.9dB

SFDR = 88.1dB