Datasheet > LM98714

LM98714

更新时间： 2024-09-25 03:51:39

品牌	Logo	应用领域
美国国家半导体 - NSC		传感器
页数	文件大小	规格书
12页	599K
描述
Three Channel, 16-Bit, 45 MSPS Digital Copier Analog Front End with Integrated CCD/CIS Sensor Timing Generator and LVDS Output

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LM98714 数据手册

October 2006

LM98714

Three Channel, 16-Bit, 45 MSPS Digital Copier Analog

Front End with Integrated CCD/CIS Sensor Timing

Generator and LVDS Output

n Independent Gain/Offset Correction for Each Channel

n Digital Black Level Correction Loop for Each Channel

n Programmable Input Clamp Voltage

n Flexible CCD/CIS Sensor Timing Generator

General Description

The LM98714 is a fully integrated, high performance 16-Bit,

45 MSPS signal processing solution for digital color copiers,

scanners, and other image processing applications. High-

speed signal throughput is achieved with an innovative ar-

chitecture utilizing Correlated Double Sampling (CDS), typi-

Key Specifications

cally employed with CCD arrays, or Sample and Hold (S/H)

inputs (for Contact Image Sensors and CMOS image sen-

sors). The signal paths utilize 8 bit Programmable Gain

Amplifiers (PGA), a +/-9-Bit offset correction DAC and inde-

pendently controlled Digital Black Level correction loops for

each input. The PGA and offset DAC are programmed inde-

pendently allowing unique values of gain and offset for each

of the three inputs. The signals are then routed to a 45MHz

high performance analog-to-digital converter (ADC). The

fully differential processing channel shows exceptional noise

immunity, having a very low noise floor of -74dB. The 16-bit

ADC has excellent dynamic performance making the

LM98714 transparent in the image reproduction chain.

n Maximum Input Level

1.2 or 2.4 Volt Modes

(both with + or - polarity option)

16-Bit

n ADC Resolution

n ADC Sampling Rate

n INL

45 MSPS

+/- 23 LSB (typ)

15/22.5/30 MSPS

256 Steps

n Channel Sampling Rate

n PGA Gain Steps

n PGA Gain Range

n Analog DAC Resolution

n Analog DAC Range

n Digital DAC Resolution

n Digital DAC Range

n SNR

0.7 to 7.84x

+/-9 Bits

+/-300mV or +/-600mV

+/-6 Bits

-1024 LSB to + 1008 LSB

-74dB ( 0dB PGA Gain)

Applications

n Power Dissipation

n Operating Temp

505mW (LVDS) 610mW (CMOS)

0 to 70˚C

n Multi-Function Peripherals

n Facsimile Equipment

n Supply Voltage

3.3V Nominal (3.0V to 3.6V range)

n Flatbed or Handheld Color Scanners

n High-speed Document Scanner

Features

n LVDS/CMOS Outputs

n LVDS/CMOS Pixel Rate Input Clock or ADC Input Clock

n CDS or S/H Processing for CCD or CIS sensors

System Block Diagram

20105370

DS201053

www.national.com

12 3 4 5 6 7...12

中文翻译

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与LM98714相关器件

型号	品牌	获取价格	描述	数据表
LM98714BCMT	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Digital Copier Analog Front End with Integrated CCD
LM98714BCMT/NOPB	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output
LM98714BCMTX	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Digital Copier Analog Front End with Integrated CCD
LM98714BCMTX/NOPB	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output
LM98714CCMT	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Digital Copier Analog Front End with Integrated CCD
LM98714CCMT/NOPB	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output
LM98714CCMTX	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output
LM98714CCMTX/NOPB	TI	获取价格	LM98714 Three Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output
LM98722	NSC	获取价格	3 Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output, Integrated CCD/CIS Sens
LM98722	TI	获取价格	具有 LVDS/CMOS 输出和集成 CCD/CIS 传感器定时发送器的 3 通道 16

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