A/D, D/C Converters for Image Signal Processing MN6576H Low Power 9-Bit CMOS A/D Converter for Image Processing D6 D5 D4 DVDDL DVSS D3 D2 D1 23 22 21 20 19 18 17 The MN6576H is a high-speed 9-bit CMOS analog-todigital converter for image processing applications. It uses a half flash structure based on chopper comparators and achieves both high speed and low power consumption with multiplexing. It provides separate power supply pins for the circuits driving the low-voltage digital output pins. Pin Assignment 24 Overview D7 25 16 D0 NOE 31 10 VRB POWD 32 9 AVSS Power consumption: 120 mW (typ.) (fCLK=16 MHz) Applications VRT Power supply voltage: 5.0 V or 3.3 V 8 VRBS Differential linearity error: ±0.6 LSB (typ.) 7 AVSS 11 VIN 12 30 AVDD 29 CLK 6 DVDD VRM Linearity error: ±2.5 LSB (typ.) 5 AVDD AVSS 13 AVDD Maximum conversion rate: 16 MSPS (min.) 28 4 AVDD DVSS 3 Features 2 TEST 14 VRTS 15 27 1 26 AVSS D8 OVF Digital television receivers Digital video equipment Digital image processing equipment (TOP VIEW) QFH032-P-0707 1 2 19 18 17 16 15 DVSS 20 21 DVDDL 22 D4 23 D5 24 D6 25 D7 26 D8 27 OVF 28 DVSS 29 DVDD 30 CLK 31 NOE 32 POWD D3 D2 D1 D0(LSB) TEST 31 Upper comparator (5 bits) Upper encoder (5 bits) 31 Clock generator 5 Lower encoder B (4 bits) Lower encoder A (4 bits) Lower comparator B (4 bits) 31 Lower comparator A (4 bits) SS VRBS SS 3 V RT 2 VRTS 1 AVSS VIN 7 AV DD 6 VRM 5 AVDD 4 AV 8 VRB 9 AV SS 10 11 AVDD 13 AV DD 12 AV 14 MN6576H A/D, D/C Converters for Image Signal Processing Block Diagram 31 31 31 5 Error correction and data latch 5 A/D, D/C Converters for Image Signal Processing MN6576H Pin Descriptions Pin No. 1 Symbol AVSS Function Description Ground for analog circuits 2 VRTS Reference voltage power supply (TOP) 3 VRT Reference voltage input (TOP) 4 AVSS Ground for analog circuits 5 AVDD Power supply for analog circuits 6 VRM Intermediate reference voltage 7 AVDD Power supply for analog circuits 8 VIN 9 AVSS Analog signal input Ground for analog circuits 10 VRB Reference voltage power supply (BOTTOM) 11 VRBS Reference voltage input (BOTTOM) 12 AVSS Ground for analog circuits 13 AVDD Power supply for analog circuits 14 AVDD Power supply for analog circuits 15 TEST Test mode selection 16 D0 Digital code output (LSB) 17 D1 Digital code output 18 D2 Digital code output 19 D3 Digital code output 20 DVSS 21 DVDDL Ground for digital circuits 22 D4 Digital code output 23 D5 Digital code output 24 D6 Digital code output 25 D7 Digital code output Power supply for low-voltage digital outputs 26 D8 27 OVF Overflow output Digital code output (MSB) 28 DVSS Ground for digital circuits 29 DVDD Power supply for digital circuits 30 CLK Sampling clock 31 NOE Output enable 32 POWD Power down mode selection 3 MN6576H A/D, D/C Converters for Image Signal Processing Absolute Maximum Ratings Ta=25˚C Parameter Power supply voltage Symbol VDD Rating – 0.3 to +7.0 Power supply voltage for digital output circuits DVDDL – 0.3 to VDD +0.3 V VI – 0.3 to VDD +0.3 V Output voltage VO – 0.3 to VDD +0.3 V Operating ambient temperature Topr –20 to +70 ˚C Storage temperature Tstg –55 to +125 ˚C Input voltage Recommended Operating Conditions Unit V VDD=AVDD=DVDD=4.5V, DVDDL=3.0V, VSS=AVSS=DVSS=0V, Ta=25˚C Parameter Power supply voltage Symbol VDD min 4.50 Power supply voltage for digital output circuits DVDDL typ 5.00 max 5.25 Unit V 3.0 3.6 V Digital input "H" level VIH 2.4 VDD V voltage "L" level VIL VSS 0.8 V Reference voltage "H" level VRT 3.0 VDD V "L" level VRB VSS 2.0 V "H" level pulse width tWH 25 ns "L" level pulse width tWL 25 ns VAIN VSS Clock Analog input voltage Electrical Characteristics Parameter Power consumption VDD V VDD=AVDD=DVDD=4.5V, DVDDL=3.0V, AVSS=DVSS=0V, Ta=25˚C Symbol Conditions PC VDD=5.0V, DVDDL=3.3V, min fCLK=16MSPS typ max Unit 120 150 mW (not including reference current) Resolution RES 9 Linearity error EL fCLK=16MSPS ±2.5 ±3.5 LSB Differential linearity error ED VRT=3.3V ±0.6 ±1.0 LSB VRB=1.3V Maximum conversion rate FC(max.) 16 Clock frequency fCLK 1 16 MHz Analog input dynamic range DR 2 VRT –VRB V Output IOH –2 mA "H" level current MSPS VOH=DVDDL– 0.8V, VDD=5.0V, DVDDL=3.3V "L" level IOL VOL=0.4V, VDD=5.0V DVDDL=3.3V Output delay time td VDD=5.0V, DVDDL=3.3V, CL=10pF Analog input capacitance 4 bit CI VDD=5.0V 2 10 mA 30 26 45 ns pF A/D, D/C Converters for Image Signal Processing MN6576H Timing Chart The chip samples the analog input at the falling edge of the clock signal and provides the corresponding digital output 2.5 clock cycles later at the rising edge of the clock signal. tWH tWL Clock Analog input Data output N N–3 N+1 N–2 N+2 N+3 N–1 N N+4 N+1 td(30ns) Note: The circles indicate analog signal sampling points. 5 MN6576H A/D, D/C Converters for Image Signal Processing Package Dimensions (Unit:mm) QFH032-P-0707 9.2±0.2 7.0±0.2 17 16 32 9 (1.225) 25 1 (1.225) 7.0±0.2 9.2±0.2 24 8 0.65 0.3±0.1 0.1 SEATING PLANE 6 0.1±0.1 +0.10 0.15 -0.05 2.9 max. 2.5±0.2 1.1±0.2 0 to 10° 0.5±0.2