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AD5541A Datasheet(PDF) 1 Page - Analog Devices |
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AD5541A Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page System Ready, 20-Bit, ±2LSB INL, Voltage Output DAC Data Sheet AD5790 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 ©2011-2012 Analog Devices, Inc. All rights reserved. FEATURES Single 20-bit voltage output DAC, ±2 LSB INL 8 nV/√Hz output noise spectral density 0.1 LSB long-term linearity error stability ±0.018 ppm/°C gain error temperature coefficient 2.5 μs output voltage settling time 3.5 nV-sec midscale glitch impulse Integrated precision reference buffers Operating temperature range: −40°C to +125°C 4 mm × 5 mm LFCSP package Wide power supply range of up to ±16.5 V 35 MHz Schmitt-triggered digital interface 1.8 V compatible digital interface APPLICATIONS Medical instrumentation Test and measurement Industrial control Scientific and aerospace instrumentation Data acquisition systems Digital gain and offset adjustment Power supply control FUNCTIONAL BLOCK DIAGRAM A1 6.8kΩ 6kΩ 6.8kΩ R1 RFB DAC REG 20 20 INPUT SHIFT REGISTER AND CONTROL LOGIC POWER-ON-RESET AND CLEAR LOGIC AD5790 IOVCC SDIN VCC VDD VREFP AGND VSS DGND SCLK SYNC SDO LDAC CLR RESET RFB INV VOUT 20-BIT DAC VREFN Figure 1. Table 1. Related Devices Part No. Description AD5791 20-bit, 1 LSB accurate DAC AD5780 18-bit, ±1 LSB INL, voltage output DAC , buffered reference inputs AD5781 18-bit, ±1 LSB INL, voltage Output DAC , unbuffered reference inputs AD5760 16-bit, ±0.5 LSB INL, voltage Output DAC AD5541A/AD5542A 16-bit, 1 LSB accurate 5 V DAC GENERAL DESCRIPTION The AD57901 is a single 20-bit, unbuffered voltage-output DAC that operates from a bipolar supply of up to 33 V. The AD5790 accepts a positive reference input in the range of 5 V to VDD − 2.5 V and a negative reference input in the range of VSS + 2.5 V to 0 V. The AD5790 offers a relative accuracy specification of ±2 LSB maximum range, and operation is guaranteed mono- tonic with a −1 LSB to +3 LSB DNL specification. The part uses a versatile 3-wire serial interface that operates at clock rates of up to 35 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards. Reference buffers are also provided on chip. The part incorpo- rates a power-on reset circuit that ensures the DAC output powers up to 0 V in a known output impedance state and remains in this state until a valid write to the device takes place. The part provides a disable feature that places the output in a defined load state. The part provides an output clamp feature that places the output in a defined load state. 1 Protected by U.S. Patent No. 7,884,747. PRODUCT HIGHLIGHTS 1. 20-bit resolution. 2. Wide power supply range of up to ±16.5 V. 3. −40°C to +125°C operating temperature range. 4. Low 8 nV/√Hz noise. 5. Low ±0.018 ppm/°C gain error temperature coefficient. COMPANION PRODUCTS Output Amplifier Buffer: AD8675, ADA4898-1, ADA4004-1 External Reference: ADR445 DC-to-DC Design Tool: ADIsimPower™ Additional companion products on the AD5790 product page |
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