LTC2356-12_12 LINER [Linear Technology], LTC2356-12_12 Datasheet

LTC2356-12_12

Manufacturer Part Number

LTC2356-12_12

Description

Serial 12-Bit/14-Bit, 3.5Msps

Manufacturer

LINER [Linear Technology]

Datasheet

1.LTC2356-12_12.pdf (18 pages)

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FEATURES

APPLICATIONS

BLOCK DIAGRAM

10µF

3.5Msps Conversion Rate

74.1dB 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

±1.25V Bipolar Input Range

Tiny 10-Lead MSOP Package

Communications

Data Acquisition Systems

Uninterrupted Power Supplies

Multiphase Motor Control

Multiplexed Data Acquisition

RFID

–

LTC2356-14

GND

REF

–

S & H

REFERENCE

2.5V

14-BIT ADC

10µF

EXPOSED PAD

3.3V

Sampling ADCs with Shutdown

OUTPUT

THREE-

TIMING

SERIAL

STATE

LOGIC

PORT

DESCRIPTION

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 com-

bination of speed, low power and tiny package makes the

LTC2356-12/LTC2356-14 suitable for high speed, portable

applications.

The 80dB common mode rejection allows users to eliminate

ground loops and common mode noise by measuring

signals differentially from the source.

The devices convert –1.25V to 1.25V bipolar inputs

differentially. The absolute voltage swing for A

The serial interface sends out the conversion results during

the 16 clock cycles following a CONV rising edge for com-

patibility with standard serial interfaces. If two additional

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.

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.

Serial 12-Bit/14-Bit, 3.5Msps

–

2356 BD

extends from ground to the supply voltage.

SDO

CONV

SCK

LTC2356-12/LTC2356-14

2356-12/LTC2356-14 are 12-bit/14-bit, 3.5Msps

–104

–50

–56

–62

–68

–80

–92

–98

–74

–86

THD, 2nd and 3rd vs Input Frequency

0.1

for Differential Input Signals

FREQUENCY (MHz)

THD

2nd

3rd

2356 G02

100

2356fb

and

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