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MAX5322 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX5322 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 18 page General Description The MAX5322 dual, 12-bit, serial-interface, digital-to-ana- log converter (DAC) provides bipolar ±5V to ±10V out- puts from ±12V to ±15V analog power-supply voltages, or unipolar 5V to 10V outputs from a single 12V to 15V ana- log power-supply voltage. The MAX5322 features excellent linearity with both inte- gral nonlinearity (INL) and differential nonlinearity (DNL) guaranteed to ±1 LSB (max). The device also features a fast 10µs to 0.5 LSB settling time, and a hardware-shut- down feature that reduces current consumption to 2.8µA. The output goes to midscale at power-up in bipolar mode (0V), and to zero scale at power-up in unipolar mode (0V). A clear input (CLR) asynchronously clears the DAC register and sets the outputs to 0V. The outputs can be asynchronously updated with the load DAC (LDAC) input. The device features a fast 10MHz SPI™-/QSPI™- /MICROWIRE™-compatible serial interface that operates with 3V or 5V logic. Additional features include a serial- data output (DOUT) for daisy chaining and read-back functions. The MAX5322 requires external reference volt- ages of 2V to 5.25V and is available in a 28-pin SSOP package that operates over the extended (-40 °C to +85 °C) temperature range. Applications Features ♦ Unipolar or Bipolar Output-Voltage Ranges Unipolar: 0 to +2 x VREF (Single or Dual Supply) Bipolar: -2 x VREF to +2 x VREF (Dual Supply) ♦ Guaranteed INL ≤ ±1 LSB (max) ♦ Guaranteed Monotonic: DNL ≤ ±1 LSB (max) ♦ 10µs Settling Time to 0.5 LSB ♦ Low 2.8µA Shutdown Current ♦ Fast 10MHz SPI-/QSPI-/MICROWIRE-Compatible Serial Interface ♦ Power-On Reset Sets DAC Output to 0V ♦ Schmitt Trigger Inputs for Direct Optocoupler Interface ♦ Serial-Data Output Allows Daisy-Chaining of Devices ♦ 28-Pin SSOP (8mm x 10mm) ±10V, Dual, 12-Bit, Serial, Voltage-Output DAC ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-3150; Rev 2; 10/05 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. PART TEMP RANGE PIN-PACKAGE MAX5322EAI -40 °C to +85°C 28 SSOP OUTA SGNDA REFA 2R 2R 12-BIT DAC A A1 A2 SW1 SW2 SW3 12 OUTB SGNDB 2R 2R 12-BIT DAC B A3 A4 SW4 SW5 SW6 12 REFB 2R 2R 2R 2R INPUT REGISTERS DAC REGISTERS DIN SCLK SERIAL INTERFACE AND CONTROL 16-BIT SHIFT REGISTER 12 12 CS UNI/BIPB UNI/BIPA SHDN DOUT DIGITAL POWER VCC DGND ANALOG POWER VSS VDD AGND MAX5322 CLR LDAC SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Motor Control Industrial Process Controls Industrial Automation Automatic Test Equipment (ATE) Analog I/O Boards Data-Acquisition Systems Functional Diagram |
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