CDS/PGA & 10-bit A/D Converter
Description
HD49334AF/AHF
CDS/PGA & 10-bit A/D Converter
REJ03F0105-0100Z Rev.
1.
0 Apr 20, 2004
Description
The HD49334AF/AHF is a CMOS IC that provides CDS-PGA analog processing (CDS/PGA) suitable for CCD camera digital signal processing systems together with a 10-bit A/D converter in a single chip.
Functions
• • • • • • • Correlated double sampling PGA Offset compensation Serial interface control 10-bit ADC Operates using only the 3 V voltage Corresponds to switching mode of power dissipation and operating frequency Power dissipation: 120 mW (Typ), maximum frequency: 36 MHz (HD49334AHF) Power dissipation: 60 mW (Typ), maximum frequency: 25 MHz (HD49334AF) • ADC direct input mode • QFP 48-pin package
Features
• Suppresses low-frequency noise output from CCD by the S/H type correlated double sampling.
• The S/H response frequency characteristics for the reference level can be adjusted using values of external parts and registers.
• High sensitivity is achieved due to the high S/N ratio and a wide coverage provided by a PG amplifier.
• Feedback is used to compensate and reduce the DC offsets including the output DC offset due to PGA gain change and the CCD offset in the CDS (correlated double sampling) amplifier input.
• PGA, standby mode, etc.
, is achieved via a serial interface.
• High precision is provided by a 10-bit-resolution A/D converter.
Rev.
1.
0, Apr 20, 2004, page 1 of 22
HD49334AF/AHF
Pin Arrangement
ADCIN AVSS NC AVDD BIAS BLKC CDSIN BLKFB BLKSH AVDD AVSS AVSS
VRM VRT VRB NC DVSS OEB DVDD DVDD DVSS CS SDATA SCK 36 35 34 33 32 31 30 29 28 27 26 25 37 24 38 23 39 22 40 21 41 20 42 19 43 18 44 17 16 45 46 15 47 14 48 13 1 2 3 4 5 6 7 8 9 10 11 12 NC NC SPSIG SPBLK OBP PBLK DVDD DVDD ADCLK DVSS DVSS DRDVDD
Pin Description
Pin No.
1 2 to 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Symbol NC D0 to D9 NC DRDVDD DVSS DVSS ADCLK DVDD DVDD PBLK OBP SPBLK SPSIG NC NC AVSS AVSS AVDD BLKSH BLKFB CDSIN BLKC Description No connection pin Digital output No c...
Similar Datasheet
