AD5444 Analog Devices, AD5444 Datasheet
AD5444
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AD5444 Summary of contents
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... integrated feedback resistor (R ) provides temperature tracking and full-scale voltage output FB when combined with an external current-to-voltage precision amplifier. The AD5444/AD5446 DACs are available in small 10-lead MSOP packages, which are pin-compatible with the AD5425/AD5426/AD5432/AD5443 1 US Patent Number 5,689,257. ...
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... AD5444/AD5446 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 Terminology .................................................................................... 14 General Description ....................................................................... 15 DAC Section................................................................................ 15 REVISION HISTORY 4/07—Rev Rev. C Changes to Table 9.......................................................................... 19 Changes to Ordering Guide .......................................................... 28 4/06— ...
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... V − − 0 0.4 V 0.4 V ±1 nA ± Rev Page AD5444/AD5446 to T MIN MAX Conditions Guaranteed monotonic Guaranteed monotonic Data = 0x0000 25° OUT Data = 0x0000 −40°C to +125° OUT Input resistance T = −50 ppm/°C C Input resistance T = − ...
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... AD5444/AD5446 Parameter 1 DYNAMIC PERFORMANCE Reference Multiplying Bandwidth Multiplying Feedthrough Error Output Voltage Settling Time Measured to ± Measured to ± Measured to ± Digital Delay 10%-to-90% Settling Time Digital-to-Analog Glitch Impulse Output Capacitance I 1 OUT I 2 OUT Digital Feedthrough Analog THD ...
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... DB0 Figure 2. Standalone Timing Diagram DB15 DB0 ( DB15 (N) Figure 3. Daisy-Chain Timing Diagram Rev Page AD5444/AD5446 + unless otherwise noted. MIN MAX DB0 ( DB0 (N) ...
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... AD5444/AD5446 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. Transient currents 100 mA do not cause SCR latch-up. Table 3. Parameter V to GND GND REF GND OUT OUT 1 Logic Inputs and Outputs Input Current (All Pins Except Supplies) ...
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... DAC Feedback Resistor. Establishes voltage output for the DAC by connecting to an external amplifier output OUT FB AD5444 REF OUT AD5446 GND TOP VIEW (Not to Scale) SCLK 4 7 SDO SDIN SYNC 5 6 Figure 5. Pin Configuration Rev Page AD5444/AD5446 ...
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... Figure 9. DNL vs. Code (14-Bit DAC 25° AD5444 MAX INL MIN INL REFERENCE VOLTAGE (V) Figure 10. INL vs. Reference Voltage T = 25° AD5444 MAX DNL MIN DNL REFERENCE VOLTAGE (V) Figure 11. DNL vs. Reference Voltage ...
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... V = 10V REF –40 – 100 TEMPERATURE (°C) Figure 15. Gain Error vs. Temperature T = 25° AD5444 REFERENCE VOLTAGE (V) Figure 16. Gain Error vs. Reference Voltage OUT OUT DD – 100 TEMPERATURE (°C) Figure 17 ...
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... Figure 18. Supply Current vs. Logic Input Voltage 0.7 0.6 0 0.4 0.3 0 0.1 0 –40 – TEMPERATURE (°C) Figure 19. Supply Current vs. Temperature 25°C A AD5444 LOADING 0101 0101 0101 100 1k 10k FREQUENCY (Hz) Figure 20. Supply Current vs. Update Rate 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 ALL 1s ALL 0s – ...
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... T = 25° 3.5V REF AD8038 AMP 1.8pF COMP 200 225 250 0 Rev Page AD5444/AD5446 T = 25° AD8038 AMPLIFIER FULL SCALE ZERO SCALE 10 100 1k 10k 100k 1M FREQUENCY (Hz 25° ±3.5V ...
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... AD5444/AD5446 0 –20 –40 –60 –80 –100 –120 0 100k 200k 300k FREQUENCY (Hz) Figure 30. Wideband SFDR , kHz, Clock = 1 MHz OUT 0 –20 –40 –60 –80 –100 –120 0 100k 200k 300k FREQUENCY (Hz) Figure 31. Wideband SFDR kHz, Clock = 1 MHz OUT 25° ...
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... T = 25° 3.5V REF AD8038 AMP 400k 500k Rev Page AD5444/AD5446 T = 25°C A AD8038 AMP FULL SCALE LOADED TO DAC MIDSCALE LOADED TO DAC ZERO SCALE LOADED TO DAC 1k 10k 100k FREQUENCY (Hz) Figure 36. Output Noise Spectral Density 1M ...
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... AD5444/AD5446 TERMINOLOGY Relative Accuracy or Integral Nonlinearity Relative accuracy or integral 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 zero scale and full scale and is normally expressed in LSBs percentage of full-scale reading. ...
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... Power must be applied when measuring REF CIRCUIT OPERATION Unipolar Mode Using a single op amp, the AD5444/AD5446 can easily be configured to provide 2-quadrant multiplying operation or a unipolar output voltage swing, as shown in Figure 38. When an output amplifier is connected in unipolar mode, the output voltage is given ...
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... OUT ⎝ REF ⎠ REF n 2 where the fractional representation of the digital word loaded to the DAC 4095 (12-bit AD5444 16383 (14-bit AD5446 the resolution of the DAC. When signal, the circuit performs 4-quadrant IN multiplication ±10V ...
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... SINGLE-SUPPLY APPLICATIONS Voltage Switching Mode of Operation Figure 40 shows the AD5444/AD5446 DACs operating in the voltage switching mode. The reference voltage (V to the I 1 pin connected to AGND, and the output OUT OUT voltage is available at the V terminal. In this configuration, REF a positive reference voltage results in a positive output voltage, making single-supply operation possible ...
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... IN IN available from Analog Devices, Inc. (see Table 8 and Table 9 for suitable suggestions). REFERENCE SELECTION When selecting a reference for use with the AD5444/AD5446 current output DAC, pay attention to the output voltage tem- perature coefficient specification. This parameter affects not terminal REF only the full-scale error but can also affect the linearity (INL and DNL) performance ...
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... Slew Rate (Typ) (V/μs) V (Max) (μV) OS 180 1500 120 1000 425 3000 1300 10,000 Rev Page AD5444/AD5446 Package SOIC-8 TSOT-23, SC70 SOIC-8 TSOT-23, SC70 SOIC-8 TSOT-23, SC70 SOIC-8 TSOT-23, SC70 SOIC-8 SOIC-8 TSOT-23 TSOT-23 Supply Current (μA) Package 600 SOIC-8 ...
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... This 16-bit word consists of two control bits, 12 data bits or 14 data bits, as shown in Figure 44 and Figure 45. The AD5446 uses all 14 bits of DAC data while AD5444 uses 12 bits and ignores the 2 LSBs. Control Bit C1 and Control Bit C0 allow the user to load and update the new DAC code and to change the active clock edge ...
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... The ADSP-BF5xx family of processors has an SPI-compatible port that enables the processor to communicate with SPI- compatible devices. A serial interface between the ADSP-BF5xx and the AD5444/AD5446 DAC is shown in Figure 48. In this configuration, data is transferred through the MOSI (master output/slave input) pin. SYNC is driven by the SPI chip select pin, which is a reconfigured programmable flag pin ...
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... SPI control register (SPCR); see the 68HC11 User Manual . SCK of the 68HC11 drives the SCLK of the DAC interface, the MOSI output drives the serial data line (SDIN) of the AD5444/AD5446. The SYNC signal is derived from a port line (PC7). When data is being transmitted to the AD5444/AD5446, the SYNC line is taken low (PC7) ...
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... I-to-V amplifier should be located as close to the device as possible. EVALUATION BOARD FOR THE DAC The evaluation board consists of an AD5444 or AD5446 DAC and a current-to-voltage amplifier, AD8065. Included on the evaluation board reference, ADR01. An external reference can also be applied via an SMB input. ...
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... AD5444/AD5446 Figure 54. Schematic of the AD5444/AD5446 Evaluation Board Rev Page 04588-070 ...
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... Figure 55. Component-Side Artwork Figure 56. Silkscreen—Component-Side Artwork (Top) Rev Page AD5444/AD5446 ...
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... AD5444/AD5446 Figure 57. Solder-Side Artwork Rev Page ...
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... Parallel RU-28 ±2 Serial RU-16 ±2 Parallel RU-38 Rev Page AD5444/AD5446 Features 10 MHz BW pulse width 10 MHz BW, 50 MHz serial 10 MHz BW pulse width 10 MHz BW, 50 MHz serial 12 MHz BW, 50 MHz serial 10 MHz BW, 50 MHz serial 10 MHz BW pulse width ...
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... AD5444/AD5446 OUTLINE DIMENSIONS ORDERING GUIDE Model Resolution (Bits) AD5444YRM 12 AD5444YRM-REEL 12 AD5444YRM-REEL7 12 1 AD5444YRMZ 12 1 AD5444YRMZ-REEL 12 1 AD5444YRMZ-REEL7 12 AD5446YRM 14 AD5446YRM-REEL 14 AD5446YRM-REEL7 14 1 AD5446YRMZ 14 1 AD5446YRMZ-REEL 14 1 AD5446YRMZ-REEL7 14 1 EVAL-AD5444EBZ 1 EVAL-AD5446EBZ RoHS Compliant Part. ©2004–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...