Datasheet > 1408-12

1408-12

更新时间： 2024-01-25 17:42:14

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
20页	267K
描述
6 Channel, 12-Bit, 600ksps Simultaneous Sampling ADC with Shutdown

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中文翻译

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1408-12 数据手册

LTC1408-12

6 Channel, 12-Bit, 600ksps

Simultaneous Sampling ADC

with Shutdown

FEATURES

DESCRIPTIO

The LTC^®1408-12 is a 12-bit, 600ksps ADC with six

simultaneously sampled differential inputs. The device

draws only 5mA from a single 3V supply, and comes in a

tiny 32 pin (5mm× 5mm) QFN package. A SLEEP shut-

down feature further reduces power consumption to

6µW. The combination of low power and tiny package

makes the LTC1408-12 suitable for portable applications.

■

600ksps ADC with 6 Simultaneously Sampled

Differential Inputs

■

100ksps Throughput per Channel

■

72dB SINAD

■

Low Power Dissipation: 15mW

■

3V Single Supply Operation

■

2.5V Internal Bandgap Reference, Can be Overdriven

with External Reference

3-Wire SPI-Compatible Serial Interface

The LTC1408-12 contains six separate differential inputs

that are sampled simultaneously on the rising edge of the

CONV signal. These six sampled inputs are then

converted at a rate of 100ksps per channel.

■

0V to 2.5V Unipolar, or ±1.25V Bipolar Differential

Input Range

■

SLEEP (6µW) Shutdown Mode

The 83dB common mode rejection allows users to

eliminate ground loops and common mode noise by

measuring signals differentially from the source.

■

NAP (3.3mW) Shutdown Mode

■

Internal Conversion Triggered by CONV

■

83dB Common Mode Rejection

■

Tiny 32-Pin (5mm × 5mm) QFN Package

The device converts 0V to 2.5V unipolar inputs differen-

tially, or ±1.25V bipolar inputs also differentially,

depending on the state of the BIP pin. Any analog input

may swing rail-to-rail as long as the differential input

range is maintained.

APPLICATIO S

■

Multiphase Power Measurement

■

Multiphase Motor Control

The conversion sequence can be abbreviated to convert

fewer than six channels, depending on the logic state of

the SEL2, SEL1 and SEL0 inputs.

Data Acquisition Systems

Uninterruptable Power Supplies

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

All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 6084440, 6522187.

The serial interface sends out the six conversion results in

96 clocks for compatibility with standard serial interfaces.

BLOCK DIAGRA

–

10µF

CH5

CH4

CH3

CH2

CH1

CH0

20 19 18

17 16 15

14 12 11

12-BIT LATCH 0

12-BIT LATCH 1

12-BIT LATCH 2

12-BIT LATCH 3

12-BIT LATCH 4

12-BIT LATCH 5

–

THREE-

STATE

SERIAL

OUTPUT

PORT

S AND H

600ksps

12-BIT ADC

SD0

0.1µF

OGND

MUX

TIMING

LOGIC

CONV

2.5V

REFERENCE

SCK

DGND

GND

REF

10µF

235114 TA01

BIP

SEL2 SEL1 SEL0

140812f

12 3 4 5 6 7...20

中文翻译

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