LM98640 - 具有 LVDS 输出的 LM98640 双通道、14 位、40 MSPS 模拟前端

LM98640是TI德州仪器公司的一款CCD/CMOS信号调节产品，LM98640是具有 LVDS 输出的 LM98640 双通道、14 位、40 MSPS 模拟前端，本站介绍了LM98640的封装应用图解、特点和优点、功能等，并给出了与LM98640相关的TI元器件型号供参考。

LM98640 - 具有 LVDS 输出的 LM98640 双通道、14 位、40 MSPS 模拟前端 - CCD/CMOS信号调节 - 模拟前端(AFE) - 德州仪器

产品描述

The LM98640 is a fully integrated, high performance 14-bit, 5 MSPS to 40 MSPS signal processing solution for image processing applications. The Serial LVDS Output format performs well during ionizing doses, preventing data loss. The LM98640 has an adaptive power scaling feature to optimize power consumption based on the operating frequency and amount of gain required. High-speed signal throughput is achieved with an innovative architecture utilizing Correlated Double Sampling (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 0 dB or 6 dB. 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 programmed independently allowing unique values of gain and offset for each input. The signals are then routed to two on chip 14-bit 40 MHz high performance analog-to-digital converters (ADC). The fully differential processing channel provides exceptional noise immunity, having a very low noise floor of -79 dB with a gain of 1x. The 14-bit ADCs have excellent dynamic performance making the LM98640 transparent in the image reproduction chain.

产品特性

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: 5 MSPS to 40 MSPS
INL @ 15 MHz: ±3.5 LSB
CDS or S/H Gain: 0 dB or 6 dB
PGA Gain Steps: 256 Steps
PGA Gain Range: -3 dB to 18 dB
Coarse DAC Resolution: ±8 Bits
Coarse DAC Range: ±250 mV
Fine DAC Resolution: ±8 Bits
Fine DAC Range: ±5 mV
Noise Floor: -79 dB
Crosstalk: -80dB
Power Consumption
PGA 1-4x Gain:
- 125 mW per Channel (15 MSPS)
- 140 mW per Channel (25 MSPS)
PGA 1-8x Gain:
- 125 mW per Channel (15 MSPS)
- 178 mW per Channel (40 MSPS)
Supply Voltages:
- 3.3V Nominal (3.15V to 3.45V Range)
- 1.8V Nominal (1.7V to 1.9V Range)

下面可能是您感兴趣的TI德州仪器公司CCD/CMOS信号调节元器件

TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货

寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购