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LTBGW

更新时间： 2024-11-24 05:43:39

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
24页	515K
描述
Serial 12-Bit/14-Bit, 3Msps Simultaneous Sampling ADCs with Shutdown

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LTBGW 数据手册

LTC1407-1/LTC1407A-1

Serial 12-Bit/14-Bit, 3Msps

Simultaneous Sampling

ADCs with Shutdown

FEATURES

DESCRIPTIO

The LTC^®1407-1/LTC1407A-1 are 12-bit/14-bit, 3Msps

ADCswithtwo1.5Mspssimultaneouslysampleddifferen-

tial inputs. The devices draw only 4.7mA from a single 3V

supply and come in a tiny 10-lead MS package. A Sleep

shutdown feature lowers power consumption to 10µW.

The combination of speed, low power and tiny package

makestheLTC1407-1/LTC1407A-1suitableforhighspeed,

portable applications.

■

3Msps Sampling ADC with Two Simultaneous

Differential Inputs

■

1.5Msps Throughput per Channel

■

Low Power Dissipation: 14mW (Typ)

■

3V Single Supply Operation

■

±1.25V Differential Input Range

■

Pin Compatible 0V to 2.5V Input Range Version

(LTC1407/LTC1407A)

■

2.5V Internal Bandgap Reference with External

The LTC1407-1/LTC1407A-1 contain two separate differ-

entialinputsthataresampledsimultaneouslyontherising

edge of the CONV signal. These two sampled inputs are

then converted at a rate of 1.5Msps per channel.

Overdrive

3-Wire Serial Interface

Sleep (10µW) Shutdown Mode

Nap (3mW) Shutdown Mode

■

The 80dB common mode rejection allows users to elimi-

nategroundloopsandcommonmodenoisebymeasuring

signals differentially from the source.

80dB Common Mode Rejection at 100kHz

Tiny 10-Lead MS Package

APPLICATIO S

The devices convert –1.25V to 1.25V bipolar inputs differ-

entially. The absolute voltage swing for CH0⁺, CH0^–, CH1⁺

and CH1^–extends from ground to the supply voltage.

■

Telecommunications

■

Data Acquisition Systems

■

Uninterrupted Power Supplies

Multiphase Motor Control

I & Q Demodulation

Industrial Radio

The serial interface sends out the two conversion results in

32 clocks for compatibility with standard serial interfaces.

■

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

U.S. patent numbers 6084440, 6522187

■

BLOCK DIAGRA

10µF 3V

THD, 2nd and 3rd vs Input

Frequency for Differential

Input Signals

LTC1407A-1

–44

–50

–56

–62

CH0

–

S & H

–

CH0

THREE-

STATE

SERIAL

OUTPUT

PORT

3Msps

14-BIT ADC

MUX

SDO

–68

–74

–

CH1

THD 3rd

S & H

–80

–86

–

CONV

SCK

–92

TIMING

LOGIC

2nd

REF

–98

10µF

–104

GND

2.5V

REFERENCE

0.1

10 20

FREQUENCY (MHz)

EXPOSED PAD

14071 G22

1407A1 BD

14071f

12 3 4 5 6 7...24

中文翻译

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