MAS8444A

DA8444A.005 May 31, 1996 MAS8444A OCTAL 6-BIT TRIMMER IC Eight discrete DACs 2 I C-bus slave receiver Voltage output DESCRIPTION The MAS8444a comprises eight digital to analog converters (DACs) each controlled by a two-wire I2C bus. The DACs are individually programmed using an 6-bit word to select an output from one of 64 voltage steps. The maximum output voltage of all DACs is set by Vmax. At power-on all outputs are set to their lowest value. The I2C-bus slave receiver has 3 programmable address pins (2 in the SO16 package). FEATURES Rail to rail output stages Octal 6-bit DACs on a single monolithic chip Power   supply¡ range from +5V to +12V -25 C to +85 C temperature range 16-pin PDIL and SO package pin to pin compatibility with TDA8444 APPLICATION Trimmer replacement Automatic gain control High resolution monitors BLOCK DIAGRAM SDA 3 SCL 4 A0 5 A1 6 A2 7 I C Bus Slave Receiver 2 6-BIT DAC DAC7 6-BIT DAC DAC6 DAC5 6-BIT DAC 6-BIT DAC 6-BIT DAC 6-BIT DAC DAC4 DAC3 DAC2 DAC1 Vmax 2 Reference Voltage Generator 6-BIT DAC 6-BIT DAC DAC0 1 8 VDD GND 1 DA8444A.005 May 31, 1996 PIN CONFIGURATION PDIP 16 MAS8444AN VDD 1 Vmax 2 SDA 3 SCL 4 A0 5 A1 6 A2 7 GND 8 16 DAC7 15 DAC6 14 DAC5 13 DAC4 12 DAC3 11 DAC2 10 DAC1 9 DAC0 SO16 MAS8444AS VDD Vmax SDA SCL NC A0 A1 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 DAC7 DAC6 DAC5 DAC4 DAC3 DAC2 DAC1 DAC0 PIN DESCRIPTION Pin name Pin no. PDIP1 6 VDD Vmax SDA SCL A0 A1 A2 GND DAC0 DAC1 DAC2 DAC...