LT1460-2.5 LINER [Linear Technology], LT1460-2.5 Datasheet

LT1460-2.5

Manufacturer Part Number

LT1460-2.5

Description

Serial 12-Bit/14-Bit, 2.8Msps

Manufacturer

LINER [Linear Technology]

Datasheet

1.LT1460-2.5.pdf (22 pages)

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FEATURES

APPLICATIONS

BLOCK DIAGRAM

10µF

2.8Msps Conversion Rate

Low Power Dissipation: 14mW

3V Single Supply Operation

2.5V Internal Bandgap Reference can be Overdriven

3-Wire Serial Interface

Sleep (10µW) Shutdown Mode

Nap (3mW) Shutdown Mode

80dB Common Mode Rejection

±1.25V Bipolar Input Range

Tiny 10-Lead MSE Package

Communications

Data Acquisition Systems

Uninterrupted Power Supplies

Multiphase Motor Control

Multiplexed Data Acquisition

–

LTC1403A-1

GND

REF

–

S & H

REFERENCE

2.5V

14-BIT ADC

10µF

EXPOSED PAD

Sampling ADCs with Shutdown

OUTPUT

THREE-

SERIAL

TIMING

STATE

LOGIC

PORT

DESCRIPTION

The LTC

serial ADCs with differential inputs. The devices draw only

4.7mA from a single 3V supply and come in a tiny 10-lead

MSE package. A Sleep shutdown feature lowers power

consumption to 10µW. The combination of speed, low

power and tiny package makes the LTC1403-1/LTC1403A-1

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 –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 CONV ↑ for compatibility 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 2.8Msps

can be achieved with a 50.4MHz 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, 2.8Msps

–

14031 TA01a

extends from ground to the supply voltage.

SDO

CONV

SCK

LTC1403-1/LTC1403A-1

1403-1/LTC1403A-1 are 12-bit/14-bit, 2.8Msps

–104

–50

–56

–62

–68

–80

–86

–92

–98

–44

–74

0.1

THD, 2nd and 3rd vs Input

Frequency for Differential Input

Signals

FREQUENCY (MHz)

THD

3rd

2nd

14031 TA01b

14031fc

and

100

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