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MAX5725AWP+T Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX5725AWP+T Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 35 page MAX5723/MAX5724/MAX5725 Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface Maxim Integrated Products 1 General Description The MAX5723/MAX5724/MAX5725 8-channel, low-power, 8-/10-/12-bit, voltage-output digital-to-analog converters (DACs) include output buffers and an internal 3ppm/°C reference that is selectable to be 2.048V, 2.500V, or 4.096V. The MAX5723/MAX5724/MAX5725 accept a wide supply voltage range of 2.7V to 5.5V with extremely low power (6mW) consumption to accommodate most low-voltage applications. A precision external reference input allows rail-to-rail operation and presents a 100kI (typ) load to an external reference. The MAX5723/MAX5724/MAX5725 have a fast 50MHz, 4-wire SPI/QSPI™/MICROWIRE®/DSP-compatible serial interface that operates at clock rates up to 50MHz. The DAC output is buffered and has a low supply current of less than 250FA per channel and a low offset error of Q0.5mV (typ). On power-up, the MAX5723/MAX5724/ MAX5725 reset the DAC outputs to zero or midscale based on the status of M/Z logic input, providing flex- ibility for a variety of control applications. The internal reference is initially powered down to allow use of an external reference. The MAX5723/MAX5724/MAX5725 allow simultaneous output updates using software LOAD commands or the hardware load DAC logic input (LDAC). The MAX5723/MAX5724/MAX5725 feature a program- mable watchdog function which can be enabled to moni- tor the I/O interface for activity and integrity. A clear logic input (CLR) allows the contents of the CODE and the DAC registers to be cleared asynchronously and simultaneously sets the DAC outputs to the program- mable default value. The MAX5723/MAX5724/MAX5725 are available in a 20-pin TSSOP and an ultra-small, 20-bump WLP package and are specified over the -40NC to +125NC temperature range. Applications Programmable Voltage and Current Sources Gain and Offset Adjustment Automatic Tuning and Optical Control Power Amplifier Control and Biasing Process Control and Servo Loops Portable Instrumentation Benefits and Features S Eight High-Accuracy DAC Channels 12-Bit Accuracy Without Adjustment ±1 LSB INL Buffered Voltage Output Guaranteed Monotonic Over All Operating Conditions Independent Mode Settings for Each DAC S Three Precision Selectable Internal References 2.048V, 2.500V, or 4.096V S Internal Output Buffer Rail-to-Rail Operation with External Reference 4.5µs Settling Time Outputs Directly Drive 2kI Loads S Small 6.5mm x 4.4mm 20-Pin TSSOP or Ultra- Small 2.5mm x 2.3mm 20-Bump WLP Package S Wide 2.7V to 5.5V Supply Range S Separate 1.8V to 5.5V VDDIO Power-Supply Input S Fast 50MHz 4-Wire SPI/QSPI/MICROWIRE/DSP- Compatible Serial Interface S Programmable Interface Watchdog Timer S Pin-Selectable Power-On-Reset to Zero-Scale or Midscale DAC Output S LDAC and CLR For Asynchronous DAC Control S Three Selectable Power-Down Output Impedances 1kI, 100kI, or High Impedance 19-6243; Rev 0; 3/12 Ordering Information appears at end of data sheet. Functional Diagram QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corporation. EVALUATION KIT AVAILABLE DIN SCLK CSB OUT0 BUFFER POR WATCHDOG TIMER VDD GND DAC CONTROL LOGIC POWER-DOWN REF OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 VDDIO DOUT CLR LDAC IRQ M/Z SPI SERIAL INTERFACE 1kI 100kI CODE LOAD CLEAR/ RESET (GATE/ CLEAR/ RESET) CODE REGISTER DAC LATCH 8-/10-/12-BIT DAC 1 OF 8 DAC CHANNELS INTERNAL REFERENCE/ EXTERNAL BUFFER MAX5723 MAX5724 MAX5725 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX5723.related |
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