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<strong>Analog</strong> Front Ends (AFE)<br />
LM98519 – 6-Channel, 10-Bit, 32.5 MSPS per Channel, <strong>Analog</strong> Front End for High-Speed Linear CCD<br />
and CIS Sensors<br />
Features<br />
• CDS or S/H processing with negative input<br />
signal polarity<br />
• Enhanced ESD protection on timing and<br />
control pins<br />
• 6-channel AFE optimized for operation with<br />
3-color, 6-output linear CCDs<br />
• Digital black level calibration for each channel<br />
• Digital white level calibration for each channel<br />
• Programmable input clamp<br />
• Maximum input level 1.2V<br />
• Channel sampling rate: 32.5 MSPS<br />
• Noise floor: -68 dB (at 0 dB PGA gain)<br />
• INL: ± 1 LSB (typ)<br />
• Power dissipation: 1.04W<br />
• Integrated PGA: total gain range 1x to 20x in<br />
256 steps<br />
• Integrated analog course DAC: offset range<br />
± 277 mV with ±4 bit resolution<br />
• Integrated analog fine DAC: offset range<br />
± 111 mV or ± 60 mV with ±11 bit resolution<br />
• Operating temperature range: 0°C to 70°C<br />
• Single 3.3V supply<br />
• Available in TQFP-80 packaging<br />
CCD Sensor<br />
Sensor Drivers<br />
CDS /<br />
SH<br />
CDS /<br />
SH<br />
CDS/<br />
SH<br />
CDS/<br />
SH<br />
5<br />
5<br />
5<br />
5<br />
PGA<br />
PGA<br />
PGA<br />
PGA<br />
DAC<br />
DAC<br />
DAC<br />
DAC<br />
M<br />
U<br />
X<br />
M<br />
U<br />
X<br />
<strong>Analog</strong> Front<br />
End<br />
+/- 6<br />
+/- 6<br />
+/- 6<br />
+/- 6<br />
LM98519<br />
ADC<br />
ADC<br />
Black Level Loop<br />
10<br />
Black Level Loop<br />
Black Level Loop<br />
10<br />
Black Level Loop<br />
SPI<br />
Data Output<br />
CCD Timing<br />
Digital Gain and<br />
Offset<br />
Digital Gain and<br />
u<br />
Offset<br />
10<br />
10<br />
Image Processor/<br />
ASIC<br />
Red<br />
Green<br />
Motor<br />
Controllers<br />
DR 9 : 0<br />
DG9:0<br />
5<br />
DAC<br />
+/- 6<br />
Black Level ABC Loop<br />
Blue<br />
CDS/<br />
SH<br />
CDS/<br />
SH<br />
PGA<br />
PGA<br />
M<br />
U<br />
X<br />
ADC<br />
10<br />
Digital Gain and<br />
Offset<br />
10<br />
DB9:0<br />
VCLP_EXT<br />
VCLP_INT<br />
5<br />
VCLP<br />
Clamp Voltage<br />
Buffer<br />
DAC<br />
+/- 6<br />
Black Level Loop<br />
1.8V<br />
Regulator<br />
Reference<br />
Generator<br />
Vreg<br />
Vreftou<br />
Vrefbou<br />
t<br />
Vref<br />
Timing<br />
Control<br />
Inputs<br />
RESETB<br />
SHP<br />
SHD<br />
CLPIN<br />
BLKCLP<br />
MCLK<br />
CE<br />
BOS<br />
Serial<br />
Interface<br />
SENB<br />
SCLK<br />
SDI<br />
SDO<br />
28
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