Datasheet > LM98620

LM98620

更新时间： 2024-11-14 11:13:11

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
71页	1144K
描述
具有 LVDS 输出的 10 位 70 MSPS 6 通道图像信号处理器

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LM98620

SNAS426C –FEBRUARY 2008–REVISED MAY 2014

LM98620 10-Bit 70 MSPS 6 Channel Imaging Signal Processor with LVDS Output

1 Features

2 Applications

•

3.3 V Single Supply Operation

CDS or S/H Processing

35 MHz Channel Rate

•

High Performance Digital Color Copiers

Scanners

•

Other Image Processing Applications

Enhanced ESD Protection on Timing, Control and

LVDS Pins

3 Description

The LM98620 is a fully integrated, 10-Bit, 70 MSPS

signal processing solution for high performance digital

color copiers, scanners, and other image processing

applications. High-speed signal throughput is

achieved with an innovative six channel architecture

utilizing Correlated Double Sampling (CDS), or

Sample and Hold (SH) type sampling. Gain settings

of 1x or 2x are available in the CDS/SH input stage.

Each channel has a dedicated 1x to 10x (8 bit) PGA

that allows accurate gain adjustment. The Digital

White Level auto calibration loop can automatically

set the PGA value to achieve a selected white target

level. Each channel also has a ±4 bit coarse and ±10-

bit fine analog offset correction DAC that allows offset

correction before the sample-and-hold amplifier.

These correction values can be controlled by an

automated Digital Black Level correction loop. The

PGA and offset DACs for each channel are

programmed independently allowing unique values of

gain and offset for each of the six channels. A 2-to-1

multiplexing scheme routes the signals to three 70

MHz high performance ADCs. The fully differential

processing channels achieve exceptional noise

immunity, having a very low noise floor of –68.5dB.

The 10-bit analog-to-digital converters have excellent

dynamic performance, making the LM98620

transparent in the image reproduction chain.

•

Low Power CMOS Design

12 Terminal to 16 Terminal (Selectable) LVDS

Serialized Data Output

•

4-Wire Serial Interface

2 Channel Symmetrical Architecture

Independent Gain and Offset Correction for Each

Channel

•

Digital Black Level Calibration for Each Channel

Digital White Level Calibration for Each Channel

Programmable Input Clamp

Key Specifications

–

Maximum Input Level:

–

1.2 Vp-p (CDS Gain = 1.0)

0.58 Vp-p (CDS Gain = 2.1)

–

Input Sample Rate:

–

5 to 35 MSPS - 6ch mode

10 to 35 MSPS - 3ch mode

–

PGA Gain Range: 1x to 10x (0 to 20 dB)

CDS/SH Gain Settings: 1x or 2.1x

Total Channel Gain: 1x to 21x (0 to 26 dB)

PGA Gain Resolution: 8 bits - Analog

ADC Resolution: 10 bits

Device Information⁽¹⁾

ADC Sampling Rate: 10 to 70 MSPS

SNR: 68.5 dB (Gain = 1x)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM98620

TQFP (80)

12.00 mm × 12.00 mm

Offset DAC Range:

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

–

±111 mV or ±59.5 mV - FDAC

±281 mV - CDAC

Simplified Schematic

–

Offset DAC Resolution:

Red

–

±10 bits - FDAC

±4 bits - CDAC

CDAC

+/- 4

FDAC

+/- 10

1x or 2.1 x gain

Black Level Loop

White Level Loop

–

Supply Voltage: 3.0 V to 3.6 V

CDS/

OSR1

OSR2

PGA

Power Dissipation: 1.02 W (typical)

ADC

CDS/

Black Level Loop

White Level Loop

+/- 10

+/- 4

FDAC

CDAC

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...71

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LM98620 替代型号

型号	品牌	替代类型	描述	数据表
LM98725	TI	功能相似	具有 LVDS/CMOS 输出和集成 CCD/CIS 传感器定时发送器的 3 通道 16
LM98714	TI	功能相似	LM98714 Three Channel, 16-Bit, 45 MSPS Analog Front End with LVDS/CMOS Output

与LM98620相关器件

型号	品牌	获取价格	描述	数据表
LM98620VHB	INFINEON	获取价格	10-bit 70 MSPS 6 Channel Imaging Signal Processor with 10-bit 70 MSPS 6 Channel Imaging Si
LM98620VHB/NOPB	TI	获取价格	具有 LVDS 输出的 10 位 70 MSPS 6 通道图像信号处理器 \| PFC \|
LM98640	TI	获取价格	Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output
LM98640CILQ	TI	获取价格	Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output
LM98640CVAL	TI	获取价格	Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output
LM98640QML	TI	获取价格	Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output
LM98640QML-SP	TI	获取价格	具有 LVDS 输出的双通道、14 位、40MSPS 模拟前端
LM98640W-MLS	TI	获取价格	Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output
LM98640W-MPR	TI	获取价格	Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output
LM98714	NSC	获取价格	Three Channel, 16-Bit, 45 MSPS Digital Copier Analog Front End with Integrated CCD/CIS Sen

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