MB88345

FUJITSU SEMICONDUCTOR DATA SHEET DS04-13508-2E Linear IC Converter CMOS D/A Converter for Digital Tuning (24-channel, 8-bit, on-chip OP amp) MB88345 s DESCRIPTION The MB88345 incorporates twenty-four 8-bit D/A converter modules. It also contains an output amplifier, allowing driving at large current. Since the inputs data in serial mode, it requires only three control lines for data input and can be cascaded. The MB88345 is suitable for applications such as electronic volume controls and replacement of semi-fixed resistors in tuning systems. s FEATURES Ultra-low power consumption (1.1 mW/ch : typical) Compact space-saving package (QFP-32) Contains 24-channel R-2R type 8-bit D/A converter On-chip analog output amps (sink current max. 1.0 mA, source current max. 1.0 mA) Analog output range : 0 V to VCC Two separate power supply/ground lines for MCU interface block/operational amplifier output buffer block and D/A converter block Serial data input : maximum operating speed 2.5 MHz CMOS process s PACKAGE 32-pin Plastic QFP (FPT-32P-M21) MB88345 s PIN ASSIGNMENT (TOP VIEW) AO24 AO23 AO22 AO21 AO20 AO19 18 AO18 17 16 15 14 13 12 11 10 INDEX 2 3 4 5 6 7 9 8 DO 24 25 26 27 28 29 30 31 32 1 LD CLK DI GND VSS AO1 AO2 AO3 23 22 21 20 19 AO17 AO16 AO15 VCC VDD AO14 AO13 AO12 AO10 (FPT-32P-M21) s PIN DESCRIPTION Pin No. 27 24 26 25 Pin name DI* DO CLK* LD* I/O I O I I Description Serial data input pin. This pin inputs serial data with a data length of 14 ...