AD5790 Analog Devices, AD5790 Datasheet
AD5790
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AD5790 Summary of contents
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... LSB accurate DAC 18-bit, ±1 LSB INL, voltage output DAC , buffered reference inputs 18-bit, ±1 LSB INL, voltage Output DAC , unbuffered reference inputs 16-bit, ±0.5 LSB INL, voltage Output DAC 16-bit, 1 LSB accurate 5 V DAC ADA4004-1 ADR445 AD5790 product page www.analog.com FB OUT ...
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... Serial Interface ............................................................................ 19 Standalone Operation................................................................ 20 Hardware Control Pins.............................................................. 20 On-Chip Registers...................................................................... 21 AD5790 Features ............................................................................ 24 Power- V......................................................................... 24 Configuring the AD5790 .......................................................... 24 DAC Output State ...................................................................... 24 Output Amplifier Configuration.............................................. 24 Applications Information .............................................................. 26 Typical Operating Circuit ......................................................... 26 Evaluation Board ........................................................................ 27 ...
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... REFP REFN nV-sec −10 V, see REFP REFN nV-sec see Figure 44 REFP REFN nV-sec Figure see REFP REFN AD5790 = 0°C to 105°C =−40°C to +105°C = 0°C to 105°C ADA4898-1 buffer Figure 43 ...
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... Linearity error refers to both INL error and DNL error, either parameter can be expected to drift by the amount specified after the length of time specified. 4 The AD5790 is configured in unity-gain mode with a low-pass RC filter on the output 300 Ω 143 pF (total capacitance seen by the output buffer, lead capacitance, and so forth). ...
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... SCLK rising edge to SDO valid ( min SYNC rising edge to SCLK rising edge ignore 35 ns typ RESET pulse width low 150 ns typ RESET pulse activation time ) and timed from a voltage level Rev Page AD5790 = ...
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... AD5790 SCLK SYNC t 8 SDIN DB23 t 10 LDAC V OUT V OUT CLR V OUT RESET V OUT t 17 SCLK SYNC t 8 SDIN DB23 INPUT WORD SPECIFIES REGISTER TO BE READ SDO DB0 t 15 ...
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... DB23 INPUT WORD FOR DAC N DB23 SDO DB0 DB23 INPUT WORD FOR DAC N – 1 DB0 DB23 UNDEFINED INPUT WORD FOR DAC N Figure 4. Daisy-Chain Mode Timing Diagram Rev Page AD5790 DB0 DB0 ...
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... AD5790 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Transient currents 100 mA do not cause SCR latch-up. Table 4. Parameter Rating V to AGND −0 + AGND − +0 −0 + DGND −0 ...
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... It is recommended that the paddle be thermally connected to a copper plane for enhanced SS Rev Page − 2.5 V can be connected its power-on status. Table 12 ) and updates the Features section for further details. AD5790 Features section for further details. AD5790 must be must be SS must SS ...
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... AD5790 TYPICAL PERFORMANCE CHARACTERISTICS AD8675 OUTPUT BUFFER 1. 25°C A 0.75 0.25 –0.25 –0.75 –1.25 –1.75 0 200000 400000 600000 800000 DAC CODE Figure 6. Integral Nonlinearity Error vs. DAC Code, ±10 V Span 2.5 AD8675 OUTPUT BUFFER T = 25°C A 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 0 200000 400000 600000 800000 DAC CODE Figure 7 ...
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... TEMPERATURE (°C) Figure 15. Differential Nonlinearity Error vs. Temperature INL MAX T = 25° +10V 0 REFP V = –10V REFN AD8675 OUTPUT BUFFER INL MIN 12.5 13.0 13.5 14.0 14.5 15.0 15.5 V /| INL MAX T = 25° REFP REFN AD8675 OUTPUT BUFFER INL MIN 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 V /| AD5790 80 100 16.0 16.5 15.5 16.5 ...
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... AD5790 1.4 DNL MAX 1.2 1 25°C 0 +10V REFP V = –10V REFN 0.6 AD8675 OUTPUT BUFFER 0.4 0.2 DNL MIN 0 –0.2 12.5 13.0 13.5 14.0 14.5 15.0 V /| Figure 18. Differential Nonlinearity Error vs. Supply Voltage, ±10 V Span 1.4 DNL MAX 1.2 1.0 0 25° REFP REFN AD8675 OUTPUT BUFFER 0.4 0.2 DNL MIN 0 –0.2 7.5 8.5 9.5 10.5 11.5 12.5 V /|V | (V) ...
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... +15V –15V SS AD8675 OUTPUT BUFFER INL MIN 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 V /|V | (V) REFP REFN Figure 28. Integral Nonlinearity Error vs. Reference Voltage 1.15 INL MAX 0.95 0. 25°C 0. +15V –15V SS AD8675 OUTPUT BUFFER 0.35 0.15 INL MIN 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 V /|V | (V) REFP REFN Figure 29. Differential Nonlinearity Error vs. Reference Voltage AD5790 14.5 15.5 16.5 9.0 9.5 10.0 9.0 9.5 10.0 ...
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... AD5790 T = 25°C A –0 +15V –15V SS AD8675 OUTPUT BUFFER –0.3 –0.5 –0.7 –0.9 –1.1 –1.3 –1.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 V /|V | (V) REFP REFN Figure 30. Zero-Scale Error vs. Reference Voltage –1 25° +15V REFP V = –15V REFN AD8675 OUTPUT BUFFER –1.5 –2.0 –2.5 –3.0 –3.5 5 ...
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... Figure 39. Power Supply Currents vs. Power Supply Voltages –2 –4 –6 –8 –10 – TIME (µs) Figure 40. Rising Full-Scale Voltage Step –2 –4 –6 –8 –10 – TIME (µs) Figure 41. Falling Full-Scale Voltage Step AD5790 ...
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... AD5790 LOW-PASS FILTER 1 UNITY GAIN MODE ADA4898-1 0 – TIME (µs) Figure 42. 500 Code Step Settling Time +10V REFP V = –10V REFN UNITY GAIN MODE ADA4898 LOW-PASS FILTER POSITIVE CODE CHANGE CODE Figure 43. 6 MSB Segment Glitch Energy for ± ...
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... –15V SS 180 V = +10V REFP V = –10V REFN 160 140 120 100 –20 1k 10k 0 Figure 49. Glitch Impulse on Removal of Output Clamp Rev Page AD5790 V = +15V –15V +10V REFP V = –10V REFN UNITY GAIN ADA4898 TIME (µs) 6 ...
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... For fast settling applications, a high speed buffer amplifier is required to buffer the load from the 3.4 kΩ output impedance of the AD5790, in which case the amplifier that determines the settling time. Digital-to-Analog Glitch Impulse ...
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... DD V REFP V REFN SERIAL INTERFACE The AD5790 SDIN) that is compatible with SPI, QSPI, and MICROWIRE interface standards, as well as most DSPs (see or buffered REFP timing diagram). Input Shift Register The input shift register is 24 bits wide. Data is loaded into the device MSB first as a 24-bit word under the control of a serial clock input, SCLK, which can operate MHz ...
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... In this mode, LDAC is held low while data is being clocked into the input shift register. The DAC output is updated on the rising edge of SYNC . Rev Page Data Sheet AD5790* SDIN SCLK SYNC SDO SDIN AD5790* SCLK SYNC SDO SDIN AD5790* SCLK SYNC SDO ...
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... Register address 0 1 Rev Page Table − × REFP REFN V V OUT REFN the negative voltage applied at the V REFN is the positive voltage applied at the V REFP DB19 to DB0 DAC register data 20 bits of data AD5790 ). input pin. input pin. LSB ...
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... Register address 1 1 Rev Page DB5 DB4 DB3 DB2 SDODIS BIN/2sC DACTRI OPGND AD5790 Features section for further and R1 are connected in parallel, as shown in Figure 53, FB AD5790 Features section DB19 to DB0 Clearcode register data 20 bits of data Data Sheet LSB DB1 DB0 ...
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... DAC register coding that is being used, either binary or twos complement. Reset Setting this bit to 1 returns the DB20 DB19 to DB3 0 Reserved AD5790 to its power-on state. Rev Page DB2 DB1 DB0 Software control register data Reset CLR 1 LDAC AD5790 LSB 2 ...
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... Output is clamped via ~6 kΩ to AGND OUTPUT AMPLIFIER CONFIGURATION There are a number of different ways that an output amplifier can be connected to the AD5790, depending on the voltage references applied and the desired output voltage span. Unity-Gain Configuration Figure 52 shows an output amplifier configured for unity gain. ...
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... V. For this mode of operation, the RBUF bit of the REFN control register must be cleared to Logic 0. V REFP 6.8kΩ 6.8kΩ A1 20-BIT DAC V REFN Figure 54. Output Amplifier in Gain of Two Configuration Rev Page AD5790 10pF FB INV V V OUT OUT AD8675 ADA4898-1 ADA4004-1 AD5790 ...
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... AD5790 APPLICATIONS INFORMATION TYPICAL OPERATING CIRCUIT Figure 55. Typical Operating Circuit Rev Page Data Sheet 10239-055 ...
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... AD5790 The evaluation board interfaces to the USB port of a PC. Soft- ware is available with the evaluation board to allow the user to easily program the AD5790. The software runs on any PC that has Microsoft® Windows® XP (SP2), or Vista (32-bit or 64-bit), or Windows 7 installed. The available, which gives full details on the operation of the ...
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... PLANE ORDERING GUIDE Model 1 Temperature Range AD5790BCPZ −40°C to +125°C AD5790BCPZ-RL7 −40°C to +125°C EVAL-AD5790SDZ RoHS Compliant Part. ©2011-2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 4.00 BSC 0.50 5.00 BSC BSC ...