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MAX520ACAP Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX520ACAP Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 20 page _______________General Description The MAX520/MAX521 are quad/octal, 8-bit voltage-output digital-to-analog converters (DACs) with simple 2-wire ser- ial interfaces that allow communication between multiple devices. They operate from a single +5V supply and their reference input range includes both supply rails. The MAX521 includes rail-to-rail output buffer amplifiers for reduced system size and component count when driving loads. The MAX520’s unbuffered voltage outputs reduce the device’s total supply current to 4µA and provide increased accuracy at low output currents. The MAX520/MAX521 feature a serial interface and internal software protocol, allowing communication at data rates up to 400kbps. The interface, combined with the double- buffered input configuration, allows the DAC registers to be updated individually or simultaneously. In addition, the devices can be put into a low-power shutdown mode that reduces supply current to 4µA. Power-on reset ensures the DAC outputs are at 0V when power is initially applied. The MAX520 is available in 16-pin DIP and wide SO pack- ages, as well as a space-saving 20-pin SSOP. The MAX521 comes in 20-pin DIP and 24-pin SO packages, as well as a space-saving 24-pin SSOP. ________________________Applications Minimum Component Analog Systems Digital Offset/Gain Adjustment Industrial Process Control Automatic Test Equipment Programmable Attenuators ____________________________Features o Single +5V Supply o Simple 2-Wire Serial Interface o I2C Compatible o Outputs Swing Rail to Rail: Unbuffered Outputs (MAX520) Buffered Outputs (MAX521) o 1%-Accurate Trimmed Output Resistance (MAX520A) o Ultra-Low 4µA Supply Current (MAX520) o Individual DACs Have Separate Reference Inputs o Power-On Reset Clears All Latches o 4µA Power-Down Mode Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs ________________________________________________________________ Maxim Integrated Products 1 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 OUT1 OUT2 OUT3 REF2 REF3 VDD AD2 AD1 AD0 OUT0 REF1 REF0 AGND DGND SCL SDA TOP VIEW MAX520 DIP/SO _________________Pin Configurations INPUT LATCH 0 8-BIT SHIFT REGISTER SCL REF0 SDA REF1 OUTPUT LATCH 0 DAC0 OUT0 1 MAX520 ADDRESS COMPARATOR START/STOP DETECTOR DECODE OUTPUT LATCH 1 DAC1 OUT1 4 8 INPUT LATCH 2 OUTPUT LATCH 2 DAC2 OUT2 OUT3 INPUT LATCH 3 OUTPUT LATCH 3 DAC3 REF3 REF2 AD2 AD1 AD0 1 INPUT LATCH 1 1 1 _______________Functional Diagrams ______________Ordering Information For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 19-0378; Rev 3; 9/96 PART † MAX520ACPE MAX520BCPE MAX520ACWE 0°C to +70°C 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 16 Plastic DIP 16 Plastic DIP 16 Wide SO TUE (LSB) 1 1 1 Pin Configurations continued at end of data sheet. Functional Diagrams continued at end of data sheet. MAX520BCWE 0°C to +70°C 16 Wide SO 1 Ordering Information continued at end of data sheet. †MAX520 “A” grade parts include a 1%-accurate, factory-trimmed output resistance. |
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