PDF DAC102S085 Data sheet ( Hoja de datos )

Número de pieza	DAC102S085
Descripción	10-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail Output
Fabricantes	National Semiconductor
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No Preview Available ! www.DataSheet4U.com June 2006 DAC102S085 10-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail Output General Description Features The DAC102S085 is a full-featured, general purpose DUAL n Guaranteed Monotonicity 10-bit voltage-output digital-to-analog converter (DAC) that n Low Power Operation can operate from a single +2.7V to 5.5V supply and uses 210 µA at 3V and 320 µA at 5V. The DAC102S085 is packaged in a 10-lead MSOP package. The on-chip output amplifier allows rail-to-rail output swing and the three wire serial interface operates at clock rates up to 40 MHz over the entire supply voltage range. Competitive devices are limited n Rail-to-Rail Voltage Output n Power-on Reset to 0V n Simultaneous Output Updating n Wide power supply range (+2.7V to +5.5V) n Power Down Modes to 25 MHz clock rates at supply voltages in the 2.7V to 3.6V range. The serial interface is compatible with standard Key Specifications SPI™, QSPI, MICROWIRE and DSP interfaces. n Resolution 10 bits The reference for the DAC102S085 serves both channels n INL ±2 LSB (max) and can vary in voltage between 1V and VA, providing the widest possible output dynamic range. The DAC102S085 has a 16-bit input shift register that controls the outputs to be updated, the mode of operation, the powerdown condition, and the binary input data. Both outputs can be updated simultaneously or individually depending on the setting of the two mode of operation bits. A power-on reset circuit ensures that the DAC output powers n DNL n Settling Time n Zero Code Error n Full-Scale Error n Supply Current — Normal — Pwr Down +0.35 / −0.25 LSB (max) 6 µs (max) +15 mV (max) −0.75 %FS (max) 270 µA (3.6V) / 410 µA (5.5V) max 20 nA (3.6V) / 30 nA (5.5V) typ up to to zero volts and remains there until there is the device. A power-down feature reduces apovwaDleidrawctaoriSnte-heeAt4pU.pcolimcations sumption to less than a microWatt with three different termi- n Battery-Powered Instruments nation options. n Digital Gain and Offset Adjustment The low power consumption and small packages of the n Programmable Voltage & Current Sources DAC102S085 make it an excellent choice for use in battery n Programmable Attenuators operated equipment. The DAC102S085 is one of a family of pin compatible DACs, including the 8-bit DAC084S085 and the 12-bit DAC122S085. The DAC102S085 operates over the ex- tended industrial temperature range of −40˚C to +105˚C. Pin Configuration DataShee 20195502 DataSheet4U.coSmPI™ is a trademark of Motorola, Inc. © 2006 National Semiconductor Corporation DS201955 www.national.com 1 page www.DataSheet4U.com Electrical Characteristics (Continued) Values shown in this table are design targets and are subject to change before product release. The following specifica- tions apply for VA = +2.7V to +5.5V, VREFIN = VA, CL = 200 pF to GND, fSCLK = 30 MHz, input code range 12 to 1011. Bold- face limits apply for TMIN ≤ TA ≤ TMAX and all other limits are at TA = 25˚C, unless otherwise specified. Symbol Parameter Conditions Typical (Note 9) Limits (Note 9) Units (Limits) VA = 3V, VOUT = 0V, Input Code = 3FFh -56 mA VA = 5V, VOUT = 0V, Input Code = 3FFh IOS Output Short Circuit Current VA = 3V, VOUT = 5V, Input Code = 000h -69 52 mA mA VA = 5V, VOUT = 5V, Input Code = 000h 75 mA Continuous Output IO Current (Note 10) Available on each DAC output 11 mA (max) CL Maximum Load Capacitance ZOUT DC Output Impedance REFERENCE INPUT CHARACTERISTICS RL = ∞ RL = 2kΩ 1500 1500 7.5 pF pF Ω Input Range Minimum 0.2 1.0 V (min) VREFIN Input Range Maximum Input Impedance VA V (max) 60 kΩ LOGIC INPUT CHARACTERISTICS et4U.com IIN VIL Input Current (Note 10) Input Low Voltage (Note 10) VIH Input High Voltage (Note 10) CIN Input Capacitance (Note 10) POWER REQUIREMENTS VA = 3V VA = 5V VA = 3V VA = 5V DataSheet4U.com ±1 µA (max) 0.9 0.6 V (max) 1.5 0.8 V (max) 1.4 2.1 V (min) 2.1 2.4 V (min) 3 pF (max) Supply Voltage Minimum VA Supply Voltage Maximum 2.7 V (min) 5.5 V (max) fSCLK = 30 MHz Normal Supply Current (output IN unloaded) fSCLK = 0 VA = 2.7V to 3.6V VA = 4.5V to 5.5V VA = 2.7V to 3.6V VA = 4.5V to 5.5V 210 320 190 290 270 µA (max) 410 µA (max) µA (max) µA (max) All PD Modes, VA = 2.7V to 3.6V 0.02 µA (max) Power Down Supply Current fSCLK = 30 MHz IPD (output unloaded, SYNC = 0V after PD mode loaded) All PD Modes, VA = 4.5V to 5.5V VA = 2.7V to 3.6V 0.03 0.015 µA (max) 1.0 µA (max) fSCLK = 0 (Note 10) VA = 4.5V to 5.5V 0.025 1.0 µA (max) DataShee DataSheet4U.com 5 www.national.com 5 Page www.DataSheet4U.com Typical Performance Characteristics VREF = VA, fSCLK = 30 MHz, TA = 25C, Input Code Range 12 to 1011, unless otherwise stated (Continued) Zero Code Error vs. VA Zero Code Error vs. VREFIN et4U.com 20195530 Zero Code Error vs. fSCLK 20195531 Zero Code Error vs. Clock Duty Cycle DataSheet4U.com DataShee 20195534 Zero Code Error vs. Temperature Full-Scale Error vs. VA 20195535 DataSheet4U.com 20195536 11 20195537 www.national.com 11 Page

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