AD5426 Analog Devices, AD5426 Datasheet
AD5426
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AD5426 Summary of contents
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... MHz. The applied external reference input voltage, V output current. An integrated feedback resistor, R temperature tracking and full-scale voltage output when combined with an external current to voltage precision amplifier. The AD5426/AD5432/AD5443 DACs are available in small, 10-lead MSOP packages. 1 U.S. Patent No. 5,689,257 FUNCTIONAL BLOCK DIAGRAM ...
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... Amplifier Selection .................................................................... 18 Serial Interface ............................................................................ 20 Microprocessor Interface .......................................................... 21 PCB Layout and Power Supply Decoupling ................................ 23 Evaluation Board for the AD5426/AD5432/AD5443 Series of DACs ............................................................................................ 23 Operating the Evaluation Board .............................................. 23 Overview of AD54xx and AD55xx Devices ............................... 27 Outline Dimensions ....................................................................... 28 Ordering Guide .......................................................................... 28 ...
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... Rev Page AD5426/AD5432/AD5443 to T MIN MAX Conditions Guaranteed monotonic Guaranteed monotonic Guaranteed monotonic Data = 0x0000 25° OUT Data = 0x0000 −40°C to 125° OUT Input resistance TC = −50 ppm/°C Input resistance TC = − ...
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... AD5426/AD5432/AD5443 Parameter Output Capacitance I 1 OUT I 2 OUT Digital Feedthrough Analog THD Digital THD 50 kHz f OUT 20 kHz f OUT Output Noise Spectral Density SFDR Performance (Wide Band) 50 kHz f OUT 20 kHz f OUT SFDR Performance (Narrow Band) 50 kHz f OUT 20 kHz f OUT Intermodulation Distortion POWER REQUIREMENTS ...
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... DB0 Figure 2. Standalone Mode Timing Diagram DB15 DB0 ( DB15(N) Figure 3. Daisy-Chain and Readback Modes Timing Diagram Rev Page AD5426/AD5432/AD5443 + unless otherwise noted. MIN MAX DB0 ( DB0(N) ...
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... AD5426/AD5432/AD5443 ABSOLUTE MAXIMUM RATINGS Transient currents 100 mA do not cause SCR latch-up 25°C, unless otherwise noted. A Table 3. Parameter V to GND GND REF GND OUT OUT 1 Logic Inputs and Output Operating Temperature Range Extended Industrial (Y Version) ...
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... DAC Feedback Resistor Pin. Establish voltage output for the DAC by connecting to external amplifier output OUT FB AD5426 OUT REF AD5432/ GND AD5443 SCLK SDO 4 7 TOP VIEW SDIN (Not to Scale) SYNC 5 6 Figure 5. Pin Configuration Rev Page AD5426/AD5432/AD5443 ...
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... AD5426/AD5432/AD5443 TYPICAL PERFORMANCE CHARACTERISTICS 0. 25° 10V REF 0. 0.10 0.05 0 –0.05 –0.10 –0.15 –0. 100 150 CODE Figure 6. INL vs. Code (8-Bit DAC) 0 25° 10V REF 0 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 0 200 400 600 CODE Figure 7. INL vs. Code (10-Bit DAC) 1 ...
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... Figure 17. Gain and Offset Errors vs. V Rev Page AD5426/AD5432/AD5443 MAX INL T = 25° REF AD5443 MAX DNL MIN INL MIN DNL 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 V (V) BIAS Figure 15 ...
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... AD5426/AD5432/AD5443 0 25° 2.5V REF 0 AND 5V DD 0.3 0.2 0.1 OFFSET ERROR 0 –0.1 –0.2 –0.3 –0.4 –0.5 0 0.2 0.4 0.6 0.8 1.0 1.2 V (V) BIAS Figure 18. Gain and Offset Errors vs. V BIAS 25° REF MAX INL AD5443 1 MAX DNL 0 –1 MIN INL –2 MIN DNL – ...
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... REF C = 1.8pF COMP –0.020 1M 10M 100M –1.70 –1.71 –1.72 –1.73 –1.74 –1.75 –1.76 1M 10M 100M Rev Page AD5426/AD5432/AD5443 V = ±0.15V, AD8038 C 1pF REF ±2V, AD8038 C 1pF REF ±3.51V, AD8038 C 1.8pF REF ±2V, AD8038 C 1.47pF REF ...
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... MCLK = 500kHz MCLK = 200kHz 25° 3.5V REF AD8038 AMP AD5426 (kHz) OUT Figure 34. Wideband SFDR vs. f Frequency (AD5426) OUT 25° REF –10 AD8038 AMPLIFIER AD5443 –20 –30 –40 –50 –60 –70 –80 –90 –100 0 50 ...
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... Figure 38. Narrowband (±50%) SFDR 25°C = 3.5V –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 Figure 39. Narrowband (±50%) IMD f Rev Page AD5426/AD5432/AD5443 T = 25° 3.5V REF AD8038 AMPLIFIER AD5443 FREQUENCY (Hz kHz, Update = 1 MHz OUT T = 25° ...
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... AD5426/AD5432/AD5443 TERMINOLOGY Relative Accuracy Relative accuracy or endpoint nonlinearity is a measure of the maximum deviation from a straight line passing through the endpoints of the DAC transfer function measured after adjusting for 0 and full scale and is normally expressed in LSBs percentage of full-scale reading. Differential Nonlinearity ...
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... THEORY OF OPERATION The AD5426, AD5432, and AD5443 are 8-, 10-, and 12-bit current output DACs consisting of a standard inverting R-2R ladder configuration. A simplified diagram for the 8-bit AD5426 is shown in Figure 40. The matching feedback resistor has a value of R. The value typically 10 kΩ ...
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... AD5432 4095 (12-bit AD5443) When signal, the circuit performs 4-quadrant IN multiplication. Table 6 shows the relationship between digital code and the expected output voltage for bipolar operation (AD5426, 8-bit device). V REF R1 ±10V NOTES 1. R1 AND R2 ARE USED ONLY IF GAIN ADJUSTMENT IS REQUIRED. ADJUST R1 FOR ...
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... Figure 43. Single-Supply Current Mode Operation In this configuration, the output voltage is given × × − V OUT FB DAC BIAS As D varies from 0 to 255 (AD5426), 1023 (AD5432) or 4095 (AD5443), the output voltage varies from − V OUT BIAS OUT BIAS ...
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... Figure 47. Current Steering DAC as a Divider or Programmable Gain Element R1 = R2R3 REFERENCE SELECTION When selecting a reference for use with the AD5426 series of current output DACs, pay attention to the references output voltage temperature coefficient specification. This parameter not only affects the full-scale error, but can also affect the linearity (INL and DNL) performance ...
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... (Max) (μV) I (Max) (nA) Noise (μV p-p) B 0.1 0.5 2 0.4 0.05 1 0.001 2.3 0.1 0.5 (MHz) Slew Rate (V/μs) CL 180 100 425 1,300 Rev Page AD5426/AD5432/AD5443 and AGND), they settle quickly. IN REF I (mA) Output Noise μV p 0.8 3.5 0.8 8 ...
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... This 16-bit word consists of 4 control bits and either data bits as shown in Figure 48, Figure 49, and Figure 50. The AD5443 uses all 12 bits of DAC data. The AD5432 uses 10 bits and ignores the 2 LSBs, while the AD5426 uses 8 bits and ignores the last 4 bits. Low Power Serial Interface ...
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... SPIxSEL MOSI SCK ADDITIONAL PINS OMITTED FOR CLARITY. Figure 51. ADSP-2191 SPI-to-AD5426/AD5432/AD5443 Interface A serial interface between the DAC and DSP channel synchronous serial port (SPORT) is shown in Figure 52. In this interface example, SPORT0 is used to transfer data to the DAC shift register. Transmission is initiated by writing a word to the Tx register after the SPORT has been enabled write sequence, data is clocked out on each rising edge of the DSP’ ...
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... SCK of the 68HC11 drives the SCLK of the DAC interface, the MOSI output drives the serial data line (DIN) of the AD5426/AD5432/AD5443. The SYNC signal is derived from a port line (PC7). When data is being transmitted to the DAC, the SYNC line is taken low (PC7) ...
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... In any circuit where accuracy is important, careful consider- ation of the power supply and ground return layout helps to ensure the rated performance. The printed circuit board on which the AD5426/AD5432/AD5443 is mounted should be designed so that the analog and digital sections are separated and confined to certain areas of the board. If the DAC system where multiple devices require an AGND-to-DGND connection, the connection should be made at one point only ...
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... 10μF 0.1μF ADR01AR V DD TRIM 5 GND 4 + C12 10μF AGND + C14 10μF V DD1 C16 10μF Figure 59. Schematic of AD5426/AD5432/AD5443 Evaluation Board SCLK J3 C11 U3 SCLK J1 VOUT SDIN U1 J4 SDIN R1 C6 SYNC VREF LK1 SYNC U2 C3 SDO/LDAC J5 J2 VREF SDO/LDAC ...
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... Figure 61. Component Side Artwork Rev Page AD5426/AD5432/AD5443 ...
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... AD5426/AD5432/AD5443 Figure 62. Solder Side Artwork Rev Page ...
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... Parallel RU-28 ±2 Serial RU-16 ±2 Parallel RU-38 Rev Page AD5426/AD5432/AD5443 Features 10 MHz BW pulse width 10 MHz BW, 50 MHz serial 10 MHz BW pulse width 10 MHz BW, 50 MHz serial 10 MHz BW, 50 MHz serial 10 MHz BW, 50 MHz serial 10 MHz BW pulse width ...
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... AD5426/AD5432/AD5443 OUTLINE DIMENSIONS ORDERING GUIDE Model Resolution (Bit) AD5426YRM 8 AD5426YRM-REEL 8 AD5426YRM-REEL7 8 1 AD5426YRMZ 8 1 AD5426YRMZ-REEL 8 1 AD5426YRMZ-REEL7 8 AD5432YRM 10 AD5432YRM-REEL7 10 1 AD5432YRMZ 10 AD5432YRMZ-REEL AD5432YRMZ-REEL7 10 AD5443YRM 12 AD5443YRM-REEL 12 AD5443YRM-REEL7 12 1 AD5443YRMZ 12 1 AD5443YRMZ-REEL 12 1 AD5443YRMZ-REEL7 12 EVAL-AD5426EB EVAL-AD5432EB EVAL-AD5443EB EVAL-AD5443-DBRDZ RoHS Compliant Part, # denotes RoHS compliant product may be top or bottom marked. ...