MN65531AS

A/D, D/C Converters for Image Signal Processing MN65531AS Low Power 6-Bit CMOS A/D Converter for Image Processing Overview The MN65531AS is a totally parallel 6-bit CMOS analog-to-digital converter with a maximum conversion rate of 20 MSPS. It includes a built-in 3-input multiplexer, clamp circuit, and reference voltage power supply. Pin Assignment VRB VRT ASM B–YIN R–YIN YIN AVSS DVSS SY SR–Y SB–Y 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 AVDD DVDD D6 D5 D4 D3 D2 D1 CLK CCP YCP Features Maximum conversion rate: 20 MSPS (min.) Linearity error: ±0.5 LSB (typ.) Differential linearity error: ±0.5 LSB (typ.) Power supply voltage: 5.0 ±0.5 V Power consumption: 100 mW (typ.) Built-in 3-input multiplexer, clamp circuit, and reference voltage power supply Applications Digital television receivers Digital video equipment Picture in picture systems Digital image processing equipment (TOP VIEW) SOP022-P-0375 1 MN65531AS Block Diagram A/D, D/C Converters for Image Signal Processing AVDD 2 VRT VRB 1 A=1 22 64 21 7 8 DVDD AVSS DVSS 63 A=1 32 YIN R-YIN B-YIN 6 7 8 Multiplexer Clamp 2 1 D1 16 (MSB) D2 17 D3 18 D4 19 D5 20 D6 (LSB) 15 Encoder (Duplex Quasi Grey) Clock Generator 12 13 11 10 SB-Y SR-Y CCP SY 2 ASM CLK YCP 14 9 3 Output Buffer Latch A/D, D/C Converters for Image Signal Processing Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Symbol VRB VRT ASM B–YIN R–YIN YIN AVSS DVSS SY SR–Y SB–Y YCP CCP CLK D1 D2 D3 D4 D5 D6 DVDD AVDD Function Description Reference voltage output (BOTTOM) Reference voltage output (TOP) Analog monitor Analog input (B-Y) Analog input (R-Y) Analog input (Y) Ground for analog circuits Ground for digital circuits Multiplexer control (Y) Multiplexer control (R-Y) Multiplexer control (B-Y) Clamp pulse (Y) Clamp pulse (R-Y, B-Y) Clock input Digital output (MSB) Digital output Digital output Digital output Digital output Digital output (LSB) Power supply for digital circuits Power supply for analog circuits Ta=25˚C MN65531AS Absolute Maximum Ratings Parameter Power supply voltage for digital circuits Power supply voltage for analog circuits Symbol DVDD AVDD VI VO Topr Tstg Rating – 0.3 to +7.0 – 0.3 to +7.0 AVSS – 0.3 to AVDD +0.3 DVSS – 0.3 to DVDD +0.3 –20 to +75 –55 to +125 Unit V V V V ˚C ˚C Input voltage Output voltage Operating ambient temperature Storage temperature Recommended Operating Conditions Parameter Power supply voltage Clock input voltage Digital input voltage Clamp pulse width "H" level "L" level "H" level "L" level Symbol VDD VCH VCL VIH VIL tCP VDD=DVDD=AVDD=5.0V, VSS=DVSS=AVSS=0V, Ta=25˚C, CC=1µF min 4.5 0.7 × VDD VSS 0.7 × VDD VSS 1.5 typ 5.0 max 5.5 VDD 0.8 VDD 0.2 × VDD Unit V V V V V µs 2.0 3 MN65531AS Electrical Characteristics Parameter Power supply current Resolution Linearity error Differential linearity error Maximum conversion rate Reference voltage output (bottom) A/D, D/C Converters for Image Signal Processing DVDD=AVDD=5.0V, DVSS=AVSS=0V, Ta=25˚C Symbol IDD RES EL ED Fc(max.) VRB VRT ICP Conditions fCLK=20MHz min typ 20 6 max 40 ±1.0 ±1.0 Unit mA bit LSB LSB MSPS V V mA mA mA ns pF 20 0.38 × VDD 0.78 × VDD ∆VCP ± 0.1V VOH=VDD– 0.8V VOL=0.4V CL=50pF 2 10 15 35 ±0.5 0.40 × VDD 0.80 × VDD ±0.8 –2 0.42 × VDD 0.82 × VDD Reference voltage output (top) Clamp current Output current "H" level "L" level IOH IOL td CI Output delay time Analog input capacitance 4 A/D, D/C Converters for Image Signal Processing Timing Chart 1. A/D converter and multiplexer timing MN65531AS SY SR-Y SB-Y ON ON ON ON ON (ASM) D1 to 6 CLK R-Y1 Y1 B-Y1 R-Y1 Y2 Y1 R-Y2 B-Y1 2. Clamp timing (VRT) YIN (VRB) YCP (VRT) R-YIN (VRM) B-YIN (VRB) CCP 5 MN65531AS Package Dimensions (Unit:mm) SOP022-P-0375 A/D, D/C Converters for Image Signal Processing 15.30±0.20 22 12 1.10±0.20 7.20±0.20 9.40±0.30 0.15 -0.05 +0.10 0 to 10° 0.30min. 1 11 (1.29) 1.27 0.40±0.10 SEATING PLANE 6 0.10±0.10 2.40max. 2.00±0.20