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DAC121S101 Fiches technique(PDF) 1 Page - Texas Instruments |
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DAC121S101 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 28 page DAC121S101 www.ti.com SNAS265H – JUNE 2005 – REVISED FEBRUARY 2010 DAC121S101/DAC121S101Q 12-Bit Micro Power, RRO Digital-to-Analog Converter Check for Samples: DAC121S101 1 FEATURES • Small Packages • Power Down Feature 23 • DAC121S101Q is AEC-Q100 Grade 1 qualified and is manufactured on an Automotive Grade APPLICATIONS Flow. • Guaranteed Monotonicity • Battery-Powered Instruments • Low Power Operation • Digital Gain and Offset Adjustment • Rail-to-Rail Voltage Output • Programmable Voltage & Current Sources • Power-on Reset to Zero Volts Output • Programmable Attenuators • Wide Temperature Range of −40°C to +125°C • Automotive • Wide Power Supply Range of +2.7V to +5.5V DESCRIPTION The DAC121S101 is a full-featured, general purpose 12-bit voltage-output digital-to-analog converter (DAC) that can operate from a single +2.7V to 5.5V supply and consumes just 177 µA of current at 3.6 Volts. The on-chip output amplifier allows rail-to-rail output swing and the three wire serial interface operates at clock rates up to 30 MHz over the specified supply voltage range and is compatible with standard SPI™, QSPI, MICROWIRE and DSP interfaces. Competitive devices are limited to 20 MHz clock rates at supply voltages in the 2.7V to 3.6V range. The supply voltage for the DAC121S101 serves as its voltage reference, providing the widest possible output dynamic range. A power-on reset circuit ensures that the DAC output powers up to zero volts and remains there until there is a valid write to the device. A power-down feature reduces power consumption to less than a microWatt. The low power consumption and small packages of the DAC121S101 make it an excellent choice for use in battery operated equipment. The DAC121S101 is a direct replacement for the AD5320 and the DAC7512 and is one of a family of pin compatible DACs, including the 8-bit DAC081S101 and the 10-bit DAC101S101. The DAC121S101 operates over the extended industrial temperature range of −40°C to +105°C while the DAC121S101Q operates over the Grade 1 automotive temperature range of −40°C to +125°C. The DAC121S101 is available in a 6-lead SOT and an 8-lead VSSOP and the DAC121S101Q is available in the 6-lead SOT only. Table 1. Key Specifications VALUE UNIT Resolution 12 bits DNL +0.25, -0.15 LSB (typ) Output Settling Time 8 µs (typ) Zero Code Error 4 mV (typ) Full-Scale Error −0.06 %FS (typ) 0.64mW (3.6V) / 1.43mW Normal Mode (5.5V) typ Power Consumption 0.14µW (3.6V) / 0.39µW Pwr Down Mode (5.5V) typ 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 SPI is a trademark of Motorola, Inc.. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2010, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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