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AD5687RBCPZ-RL7 Fiches technique(PDF) 1 Page - Analog Devices |
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AD5687RBCPZ-RL7 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 28 page Dual, 16-/12-Bit nanoDAC+ with 2 ppm/°C Reference, SPI Interface Data Sheet AD5689R/AD5687R Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES High relative accuracy (INL): ±2 LSB maximum at 16 bits Low drift 2.5 V reference: 2 ppm/°C typical Tiny package: 3 mm × 3 mm, 16-lead LFCSP TUE: ±0.1% of FSR maximum Offset error: ±1.5 mV maximum Gain error: ±0.1% of FSR maximum High drive capability: 20 mA, 0.5 V from supply rails User-selectable gain of 1 or 2 (GAIN pin) Reset to zero scale or midscale (RSTSEL pin) 1.8 V logic compatibility 50 MHz SPI with readback or daisy chain Low glitch: 0.5 nV-sec Robust 4 kV HBM and 1.5 kV FICDM ESD ratings Low power: 3.3 mW at 3 V 2.7 V to 5.5 V power supply −40°C to +105°C temperature range APPLICATIONS Optical transceivers Base station power amplifiers Process control (PLC I/O cards) Industrial automation Data acquisition systems FUNCTIONAL BLOCK DIAGRAM Figure 1. GENERAL DESCRIPTION The AD5689R/AD5687R members of the nanoDAC+™ family are low power, dual, 16-/12-bit buffered voltage output digital-to-analog converters (DACs). The devices include a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and exhibit less than 0.1% FSR gain error and 1.5 mV offset error performance. Both devices are available in a 3 mm × 3 mm LFCSP and a TSSOP package. The AD5689R/AD5687R also incorporate a power-on reset circuit and a RSTSEL pin that ensure that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per channel power-down feature that reduces the current consumption of the device to 4 µA at 3 V while in power-down mode. The AD5689R/AD5687R use a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz. and both devices contain a VLOGIC pin that is intended for 1.8 V/3 V/5 V logic. Table 1. Dual nanoDAC+ Devices Interface Reference 16-Bit 12-Bit SPI Internal AD5689R AD5687R External AD5689 AD5687 I2C Internal N/A AD5697R External N/A N/A PRODUCT HIGHLIGHTS 1. High Relative Accuracy (INL). AD5689R (16-bit): ±2 LSB maximum AD5687R (12-bit): ±1 LSB maximum 2. Low Drift 2.5 V On-Chip Reference. 2 ppm/°C typical temperature coefficient 5 ppm/°C maximum temperature coefficient 3. Two Package Options. 3 mm × 3 mm, 16-lead LFCSP 16-lead TSSOP SCLK VLOGIC SYNC SDIN SDO INPUT REGISTER DAC REGISTER STRING DAC A BUFFER VOUTA INPUT REGISTER DAC REGISTER STRING DAC B BUFFER VOUTB VREF GND VDD POWER- DOWN LOGIC POWER-ON RESET GAIN = ×1/×2 RSTSEL GAIN LDAC RESET AD5689R/AD5687R 2.5V REFERENCE |
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