Datasheet > LTC1412

LTC1412

更新时间： 2023-12-20 18:44:05

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
16页	338K
描述
12 位、3Msps、采样 A/D 转换器

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LTC1412 数据手册

LTC1412

12-Bit, 3Msps,

Sampling A/D Converter

FEATURES

DESCRIPTION

The LTC^®1412 is a 12-bit, 3Msps, sampling A/D con-

verter. This high performance device includes a high

dynamic range sample-and-hold and a precision refer-

ence. Operating from ±5V supplies it draws only 150mW.

■

Sample Rate: 3Msps

■

72dB S/(N + D) and 82dB SFDR at Nyquist

■

±0.35LSB INL and ±0.25LSB DNL (Typ)

■

Power Dissipation: 150mW

■

External or Internal Reference Operation

The ±2.5V input range is optimized for low noise and low

distortion. Most high performance op amps also perform

bestoverthisrange, allowingdirectcouplingtotheanalog

inputs and eliminating the need for special translation

circuitry. Outstanding AC performance includes 72dB

S/(N + D) and 82dB SFDR at the Nyquist input frequency

of 1.5MHz.

■

True Differential Inputs Reject Common Mode Noise

■

40MHz Full Power Bandwidth Sampling

■

±2.5V Bipolar Input Range

■

No Pipeline Delay

■

28-Pin SSOP Package

APPLICATIONS

Theuniquedifferentialinputsample-and-holdcanacquire

single-ended or differential input signals up to its 40MHz

bandwidth. The 60dB common mode rejection allows

users to eliminate ground loops and common mode noise

by measuring signals differentially from the source.

■

Telecommunications

■

Digital Signal Processing

■

Mulitplexed Data Acquisition Systems

High Speed Data Acquisition

Spectrum Analysis

Imaging Systems

■

TheADChasahighspeed12-bitparalleloutputport.There

is no pipeline delay in the conversion results. A separate

convert start input and converter status signal (BUSY)

ease connections to FIFOs, DSPs and microprocessors. A

digital output driver power supply pin allows direct con-

nection to 3V logic.

■

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

TYPICAL APPLICATION

OPTIONAL

3V LOGIC

SUPPLY

Effective Bits and Signal-to-Noise + Distortion

vs Input Frequency

10µF

LTC1412

S/H

–

D11 (MSB)

D0 (LSB)

•

OUTPUT

BUFFERS

12-BIT ADC

4.0625V

BUFFER

COMP

10µF

BUSY

CONVST

2.5V

REFERENCE

TIMING AND

LOGIC

REF

AGND

DGND

OGND

10k

100k

10M

1412 TA01

INPUT FREQUENCY (Hz)

10µF

–5V

1412 G01

12 3 4 5 6 7...16

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