LM98519VHB/HALF National Semiconductor, LM98519VHB/HALF Datasheet
LM98519VHB/HALF
Manufacturer Part Number
LM98519VHB/HALF
Description
Manufacturer
National Semiconductor
Datasheet
1.LM98519VHBHALF.pdf
(6 pages)
Specifications of LM98519VHB/HALF
Analog Front End Type
General Purpose
Analog Front End Category
General Purpose
Sample Rate
65MSPS
Operating Supply Voltage (min)
3V
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Resolution
10b
Power Supply Type
Analog
Mounting
Surface Mount
Pin Count
80
Package Type
TQFP
Number Of Channels
6
Lead Free Status / RoHS Status
Compliant
© 2008 National Semiconductor Corporation
LM98519
10-bit 65 MSPS 6 Channel Imaging Signal Processor
General Description
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 chan-
nel 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 am-
plifier. These correction values can be controlled by an auto-
mated Digital Black Level correction loop. The PGA and offset
DACs for each channel are programmed independently al-
lowing unique values of gain and offset for each of the six
channels. A 2-to-1 multiplexing scheme routes the signals to
three 65MHz high performance ADCs. The fully differential
processing channels achieve exceptional noise immunity,
having a very low noise floor of -68dB. The 10-bit analog-to-
digital converters have excellent dynamic performance mak-
ing the LM98519 transparent in the image reproduction chain.
300322
Features
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3.3V Single Supply Operation
CDS or S/H Processing with Negative Input Signal Polarity
32.5 MHz Channel Rate
Enhanced ESD Protection on Timing and Control Pins
Low Power CMOS Design
4-Wire Serial interface
2 Channel Symmetrical Architecture
Independent Gain & Offset Correction for each Channel
Digital Black Level Calibration for each Channel
Digital White Level Calibration for each Channel
Programmable Input Clamp
Maximum Input Level
Input Sample Rate
PGA Gain Range
CDS/SH Gain Settings
Total Channel Gain
PGA Gain Resolution
ADC Resolution
ADC Sampling Rate
SNR
Offset DAC Range
Offset DAC Resolution
Supply voltage
Power Dissipation
10 to 32.5 MSPS - 3ch mode
5 to 32.5 MSPS - 6ch mode
±111 mV or ±60 mV- FDAC
1.19 Vp-p (CDS gain = 1.0)
0.58 Vp-p (CDS gain = 2.1)
1x to 10x (0 to 20 dB)
1x to 20x (0 to 26 dB)
February 21, 2008
68 dB (Gain = 1x)
±277 mV - CDAC
±10 bits - FDAC
1.04 W (typical)
10 to 65 MSPS
±4 bits - CDAC
8 bits - Analog
www.national.com
3.0V to 3.6V
1x or 2.1x
10 bits
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LM98519VHB/HALF Summary of contents
Page 1
... The 10-bit analog-to- digital converters have excellent dynamic performance mak- ing the LM98519 transparent in the image reproduction chain. © 2008 National Semiconductor Corporation Features ■ 3.3V Single Supply Operation ■ ...
Page 2
Chip Block Diagram www.national.com 2 30032201 ...
Page 3
Channel Block Diagram Ordering Information Commercial Temperature NS Package Range LM98519VHB 80-Pin TQFP 3 30032202 www.national.com ...
Page 4
Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 80-Lead TQFP NS Package Number VHB80A 4 ...
Page 5
Notes 5 www.national.com ...
Page 6
... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...