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| 型号： | LM98640W-MPR |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, CQFP68 |
| 封装： | CERAMIC, QFP-68 |
| 文件页数： | 1/50页 |
| 文件大小： | 1688K |
| 代理商： | LM98640W-MPR |
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LM98640QML
January 13, 2011
Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS
Output
General Description
The LM98640QML is a fully integrated, high performance 14-
Bit, 5 MSPS to 40 MSPS signal processing solution for image
processing applications. The LM98640QML is Radiation tol-
erant up to a total ionizing dose of 100krads allowing it to be
used in space imaging applications. Configuration Registers
are Single Event Functional Interrupt Free up to 120 MeV-
cm2/mg. The Serial LVDS Output format performs well during
ionizing doses, preventing data loss. The LM98640QML has
an adaptive power scaling feature to optimize power con-
sumption based on the operating frequency and amount of
gain required. High-speed signal throughput is achieved with
an innovative architecture utilizing Correlated Double Sam-
pling (CDS), typically employed with CCD arrays, or Sample
and Hold (S/H) inputs (for Contact Image Sensors and CMOS
image sensors). The sampling edges are programmable to a
resolution of 1/64th of a pixel period. Both the CDS and S/H
have a programmable gain of either 0dB or 6dB. The signal
paths utilize two ±8 bit offset correction DACs for coarse and
fine offset correction, and 8 bit Programmable Gain Amplifiers
(PGA) for each channel. The PGA and offset DAC are pro-
grammed independently allowing unique values of gain and
offset for each input. The signals are then routed to two on
chip 14-bit 40MHz high performance analog-to-digital con-
verters (ADC). The fully differential processing channel pro-
vides exceptional noise immunity, having a very low noise
floor of -79dB with a gain of 1x. The 14-bit ADCs have excel-
lent dynamic performance making the LM98640QML trans-
parent in the image reproduction chain.
Applications
■ Focal Plane Electronics
■ Imaging Attitude Control Systems
■ Assembly Line Vision Systems
■ Factory Automation Vision Systems
■ High-speed Document Scanner
■ Multi- Function Peripherals
Features
■ Total Ionizing Dose 100 krad(Si)
■ Single Event Latch-Up free up to 120 MeV-cm2/mg
■ SEFI free up to 120 MeV-cm2/mg
■ Seialized LVDS Outputs
■ LVDS Input Clock
■ CDS or S/H Processing for CCD or CIS sensors
■ Programmable Analog Gain for Each Channel
■ Programmable Analog Offset Correction
■ Programmable Input Clamp Voltage
■ Programmable Sampling Edge up to 1/64th pixel period
Key Specifications
■ Input Level
2.85 Volts
■ ADC Resolution
14-Bit
■ ADC Sampling Rate
5MSPS to 40 MSPS
■ INL @ 15MHz
±3.5 LSB
■ CDS or S/H Gain
0dB or 6dB
■ PGA Gain Steps
256 Steps
■ PGA Gain Range
-3dB to 18dB
■ Coarse DAC Resolution
±8 Bits
■ Coarse DAC Range
±250mV
■ Fine DAC Resolution
±8 Bits
■ Fine DAC Range
±5mV
■ Noise Floor
-79dB
■ Crosstalk
-80dB
■ Power Consumption
■ PGA 1-4x Gain
125 mW per channel (15MSPS)
■
140 mW per channel (25MSPS)
■ PGA 1-8x Gain
125 mW per channel (15MSPS)
■
178 mW per channel (40MSPS)
■ Operating Temp
-55 to 125°C
■ Supply Voltages
3.3V Nominal (3.15V to 3.45V range)
■
1.8V Nominal (1.7V to 1.9V range)
Ordering Information
NS Part Number
SMD Part Number
NS Package Number
Package Description
LM98640W-MLS
Flight Part
TBD
EL68D
68 Pin Ceramic QFP
LM98640W-MPR
Pre-flight Prototype
EL68D
68 Pin Ceramic QFP
LM98640CVAL
Ceramic Evaluation Board
68 Pin Ceramic QFP
on Evaluation Board
2011 National Semiconductor Corporation
300647
www.national.com
LM98640QML
Dual
Channel,
14-Bit,
40
MSPS
Analog
Front
End
with
LVDS
Output
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM98704CCMT/NOPB | 制造商:Texas Instruments 功能描述: |
| LM98714 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Three Channel, 16-Bit, 45 MSPS Digital Copier Analog Front End with Integrated CCD/CIS Sensor Timing Generator and LVDS Output |
| LM98714BCMT | 制造商:Texas Instruments 功能描述:AFE Video 1ADC 16-Bit 3.3V 48-Pin TSSOP Rail |
| LM98714BCMT/NOPB | 功能描述:ADC / DAC多通道 16B,45MSPS Digital Copier AFE RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| LM98714BCMTX/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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