LTC2355-14 Linear Technology, LTC2355-14 Datasheet

LTC2355-14

Manufacturer Part Number

LTC2355-14

Description

(LTC2355-12/-14) 3.5Msps Sampling ADCs

Manufacturer

Linear Technology

Datasheet

1.LTC2355-14.pdf (16 pages)

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FEATURES

APPLICATIO S

10µF

BLOCK DIAGRA

■

3.5Msps Conversion Rate

74.2dB SINAD at 14-Bits, 71.1dB SINAD at 12-Bits

Low Power Dissipation: 18mW

3.3V Single Supply Operation

2.5V Internal Bandgap Reference can be Overdriven

3-Wire SPI-Compatible Serial Interface

Sleep (13µW) Shutdown Mode

Nap (4mW) Shutdown Mode

80dB Common Mode Rejection

0V to 2.5V Unipolar Input Range

Tiny 10-Lead MSOP Package

Communications

Data Acquisition Systems

Uninterrupted Power Supplies

Multiphase Motor Control

Multiplexed Data Acquisition

RFID

–

LTC2355-14

GND

REF

–

S & H

REFERENCE

2.5V

14-BIT ADC

10µF

EXPOSED PAD

3.3V

Sampling ADCs with Shutdown

OUTPUT

THREE-

SERIAL

TIMING

STATE

LOGIC

PORT

DESCRIPTIO

The LTC

serial ADCs with differential inputs. The devices draw only

5.5mA from a single 3.3V supply and come in a tiny 10-lead

MSOP package. A Sleep shutdown feature further reduces

power consumption to 13µW. The combination of speed,

low power and tiny package makes the LTC2355-12/

LTC2355-14 suitable for high speed, portable applications.

The 80dB common mode rejection allows users to elimi-

nate ground loops and common mode noise by measuring

signals differentially from the source.

The devices convert 0V to 2.5V unipolar inputs differentially.

The absolute voltage swing for A

ground to the supply voltage.

The serial interface sends out the conversion results during

the 16 clock cycles following a CONV rising edge for

compatibility with standard serial interfaces. If two addi-

tional clock cycles for acquisition time are allowed after the

data stream in between conversions, the full sampling rate

of 3.5Msps can be achieved with a 63MHz clock.

Serial 12-Bit/14-Bit, 3.5Msps

All other trademarks are the property of their respective owners.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

2355 TA01

SDO

CONV

SCK

2355-12/LTC2355-14 are 12-bit/14-bit, 3.5Msps

LTC2355-12/LTC2355-14

–104

–110

–50

–56

–62

–68

–74

–80

–86

–92

–98

0.1

THD, 2nd, 3rd and SFDR

vs Input Frequency

FREQUENCY (MHz)

THD

2nd

3rd

and A

–

extends from

2355 G02

100

2355f

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