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AD5321BRMZ-REEL71 Fiches technique(PDF) 1 Page - Analog Devices |
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AD5321BRMZ-REEL71 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 24 page 2.5 V to 5.5 V, 120 μA, 2-Wire Interface, Voltage-Output 8-/10-/12-Bit DACs AD5301/AD5311/AD5321 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©1999–2007 Analog Devices, Inc. All rights reserved. FEATURES AD5301: buffered voltage output 8-bit DAC AD5311: buffered voltage output 10-bit DAC AD5321: buffered voltage output 12-bit DAC 6-lead SOT-23 and 8-lead MSOP packages Micropower operation: 120 μA @ 3 V 2-wire (I2C®-compatible) serial interface Data readback capability 2.5 V to 5.5 V power supply Guaranteed monotonic by design over all codes Power-down to 50 nA @ 3 V Reference derived from power supply Power-on reset to 0 V On-chip rail-to-rail output buffer amplifier 3 power-down functions APPLICATIONS Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators GENERAL DESCRIPTION The AD5301/AD5311/AD53211 are single 8-/10-/12-bit, buff- ered, voltage-output DACs that operate from a single 2.5 V to 5.5 V supply, consuming 120 μA at 3 V. The on-chip output amplifier allows rail-to-rail output swing with a slew rate of 0.7 V/μs. It uses a 2-wire (I2C-compatible) serial interface that operates at clock rates up to 400 kHz. Multiple devices can share the same bus. The reference for the DAC is derived from the power supply inputs and thus gives the widest dynamic output range. These parts incorporate a power-on reset circuit, which ensures that the DAC output powers up to 0 V and remains there until a valid write takes place. The parts contain a power-down feature that reduces the current consumption of the device to 50 nA at 3 V and provides software-selectable output loads while in power-down mode. The low power consumption in normal operation makes these DACs ideally suited to portable battery-operated equipment. The power consumption is 0.75 mW at 5 V and 0.36 mW at 3 V, reducing to 1 μW in all power-down modes. 1 Protected by U.S. Patent No. 5684481. FUNCTIONAL BLOCK DIAGRAM RESISTOR NETWORK BUFFER DAC REGISTER POWER-DOWN LOGIC AD5301/AD5311/AD5321 VDD SCL A0 GND A1* REF POWER-ON RESET PD* SDA *AVAILABLE ON 8-LEAD VERSION ONLY INTERFACE LOGIC 8-/10-/12-BIT DAC VOUT Figure 1. |
Numéro de pièce similaire - AD5321BRMZ-REEL71 |
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Description similaire - AD5321BRMZ-REEL71 |
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