LM98519 - 10 位 65 MSPS 6 通道成像信号处理器

LM98519是TI德州仪器公司的一款CCD/CMOS信号调节产品，LM98519是10 位 65 MSPS 6 通道成像信号处理器，本站介绍了LM98519的封装应用图解、特点和优点、功能等，并给出了与LM98519相关的TI元器件型号供参考。

LM98519 - 10 位 65 MSPS 6 通道成像信号处理器 - CCD/CMOS信号调节 - 模拟前端(AFE) - 德州仪器

产品特性

3.3-V Single Supply Operation
CDS or S/H Processing with Negative Input Signal Polarity
32.5-MHz Channel Rate
Enhanced ESD Protection on Host Interface Pins: SHP, SHD, CLPIN, BLKCLP, AGC_ONB, MCLK, RESETB, SENB, SCLK, SDI, SDO
Low Power CMOS Design
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

产品应用

Digital Color Copiers
Scanners
Image Processing Polarity applications
Key Specifications
- Maximum Input Level:
  - 1.19 Vp-p (CDS Gain = 1.0)
  - 0.58 Vp-p (CDS Gain = 2.1)
- Input Sample Rate:
  - 5 to 32.5 MSPS – 6ch Mode
  - 10 to 32.5 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 20x (0 to 26 dB)
- PGA Gain Resolution: 8 Bits – Analog
- ADC Resolution: 10 Bits
- ADC Sampling Rate: 10 to 65 MSPS
- SNR: 67.5 dB (Gain = 1x)
- Offset DAC Range:
  - ±111 mV or ±60 mV – FDAC
  - ±277 mV – CDAC
- Offset DAC Resolution:
  - ±10 Bits – FDAC
  - ±4 Bits – CDAC
- Supply Voltage: 3.0 V to 3.6 V
- Power Dissipation: 1.04 W (Typical)

产品说明

The LM98519 is a fully integrated, high performance 10-Bit, 65 MSPS signal processing solution for 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. 1x or 2x gain settings are available in the CDS/SH input stage. Each channel has a dedicated 1x to 10x (8 bit) PGA that allows accurate gain adjustment of each channel. 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 65-MHz high performance ADCs. The fully differential processing channels achieve exceptional noise immunity, having a very low noise floor of -67.5 dB. The 10-bit analog-to-digital converters have excellent dynamic performance making the LM98519 transparent in the image reproduction chain.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM98519	TQFP (80)	12.00 mm × 12.00 mm

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