MP7226 Datasheet | Exar

FEATURES - - - - - - - - - - - APPLICATIONS MPS Pioneered Segmented DAC Approach - Function Generators Four 8-Bit DACs with Buffer Amplifiers - Automatic Test Equipment Bipolar Amplifier Inputs for Low Noise and Drift - Process Controls Operates with Single or Dual Supplies BENEFITS µP patible (95ns WR) No External Adjustments Required - Reduced Board Space; Lower System Cost Power-on-Reset Function - Reduced System Errors due to Excellent DAC-to-DAC Specified for 5 to 15 V Operation Matching and Tracking ESD Protection: 2000 Volts Minimum - Easy to Design with Microprocessors Latch-Up Proof - Stable, High Reliability through Advanced Processing Octal Available: MP7228 - Lower 1/f Noise Increases Useful Dynamic Range GENERAL DESCRIPTION The MP7226 contains four 8-bit voltage-output Digital-to Analog Converters, with Bi CMOS output buffer amplifiers and interface logic on a monolithic chip. Separate on-chip latches are provided for each of the four D/A converters. The control logic is speed patible with most 8-bit microprocessors. All digital inputs are TTL/CMOS(5V) patible. The MP7226 is manufactured using advanced thin film resistors on a double metal Bi CMOS process. The MP7226 incorporates a unique bit decoding technique yielding lower glitch, higher speed and excellent accuracy over temperature and time. The MP7226 maintains 8-Bit accuracy over the full operating temperature range without laser trim or external adjustments. SIMPLIFIED BLOCK DIAGRAM VREF VDD - 1 + LATCH 1 D A T A B U S DAC 1 VOUT1 MSB DATA (8 BIT) LSB LATCH 2 DAC 2 - 2 + VOUT2 LATCH 3 DAC 3 - 3 + VOUT3 LATCH 4 WR DAC 4 - + 4 VOUT4 A1 A0 CONTROL...