MN6557A

A/D, D/C Converters for Image Signal Processing MN6557A, MN6557AS Low-Power-Consumption CMOS 10-Bit D/A Converters for Image Processing Overview The MN6557A and MN6557AS are CMOS 10-bit D/A converters with a maximum conversion rate of 30 MSPS. High precision has been achieved by the combined use of a matrix cell system and weighted current system. They also feature low power consumption owing to the use of a CMOS process, and operate on a single power supply of 5V, and have a TTL input level. These devices are suitable for digitalization of image processing in video, TV, and similar applications. Pin Assignment MN6557A MN6557AS DVDD AVDD AVDD IREF VREF COMP VIB IOUT AVSS AVSS DVSS DIP022-P-0400 SOP022-P-0375 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 CLK D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 Features Maximum conversion rate: 30 MSPS (min.) Linearity error: ±0.5 LSB (typ.) Differential linearity error: ±0.3 LSB (typ.) Power supply voltage: 5.0 ±0.5 V Power consumption: 125 mW (typ.) Full-scale current: 13 mA (typ.) Applications Digital TV Digital video Digital signal processing equipment ( TOP VIEW ) 1 MN6557A, MN6557AS Block Diagram A/D, D/C Converters for Image Signal Processing (LSB) D10 12 13 D9 14 D8 15 D7 D6 16 D5 17 X-Decoder Latch 18 19 D3 20 D2 21 (MSB)D1 + 22 CLK – COMP 6 D4 VREF IREF 5 4 + – Latch Y-Decoder Latch 1/2 Matrix Cell (127=8 × 16–1) 1/4 1/8 8 IOUT ROUT RREF Current Source 10 AVSS 11 DVSS 7 2 3 1 DVDD 9 AVSS AVDD 2 AVDD VIB ...