AD5748ACPZ Analog Devices Inc, AD5748ACPZ Datasheet
AD5748ACPZ
Specifications of AD5748ACPZ
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AD5748ACPZ Summary of contents
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FEATURES Current output ranges mA ±0.15% FSR total unadjusted error (TUE) ±5 ppm/°C FSR typical output drift Voltage output ranges 10.5 V, ±10.5 ...
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AD5748 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Functional Block Diagram .............................................................. 3 Specifications ..................................................................................... 4 Timing Characteristics ................................................................ 7 Absolute Maximum Ratings ............................................................ 9 ESD Caution .................................................................................. 9 Pin ...
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FUNCTIONAL BLOCK DIAGRAM CLEAR CLRSEL SCLK/OUTEN* SDIN/R0* SYNC/RSET* SDO/VFAULT* HW SELECT VIN VREF RESET FAULT/TEMP* NC/IFAULT* * DENOTES SHARED PIN. SOFTWARE MODE DENOTED BY REGULAR TEXT, HARDWARE MODE DENOTED BY ITALIC TEXT. FOR EXAMPLE, FOR FAULT/TEMP PIN, IN SOFTWARE MODE, ...
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AD5748 SPECIFICATIONS AV /AV = ±12 V (± 10%) to ±24 V (± 10%), DVCC = 2 5.5 V, GND = 0 V. IOUT unless otherwise noted. Table 2. 1 Parameter INPUT VOLTAGE RANGE V ...
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Parameter Output Noise Spectral Density AC PSRR DC PSRR CURRENT OUTPUT, I OUT Output Current Ranges 4 Accuracy, Internal R SET 2 Total Unadjusted Error (TUE) Relative Accuracy (INL) Offset Error 3 Offset Error TC Gain Error 3 Gain ...
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AD5748 1 Parameter SDO Output Low Voltage Output High Voltage High Impedance Output Capacitance High Impedance Leakage Current POWER REQUIREMENTS Positive Analog Supply Negative Analog Supply Digital Power Supply Input ...
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TIMING CHARACTERISTICS AV /AV = ±12 V (± 10%) to ±24 V (± 10%), DVCC = 2 5.5 V, GND = 0 V. VOUT 300 Ω. All specifications unless otherwise noted. ...
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AD5748 Timing Diagrams SCLK SYNC t 7 SDIN D15 CLEAR VOUT RESET 1 2 SCLK SYNC SDIN X SDO ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C unless otherwise noted. A Transient currents 100 mA do not cause SCR latch-up. Table 4. Parameter Rating AVDD to GND −0 +30 V AVSS to GND +0 ...
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AD5748 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 SDO/VFAULT Serial Data Output (SDO). In software mode, this pin is used to clock data from the input shift register in readback mode. Data ...
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Pin No. Mnemonic Description 11 AD0/R3 Device Addressing Bit (AD0). In software mode, this pin, in conjunction with AD1 and AD2, allows up to eight devices to be addressed on one bus. Range Decode Bit (R3). In hardware mode, this ...
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AD5748 TYPICAL PERFORMANCE CHARACTERISTICS VOLTAGE OUTPUT 0.0020 AV = +24V –24V SS 0.0015 0.0010 0.0005 0 –0.0005 –0.0010 –0.0015 –0.0020 +5V –0.0025 +10V ±10V –0.0030 0 0.585 1.170 1.755 2.341 V (V) IN Figure 5. Integral Nonlinearity ...
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GAIN, NO LOAD –0.020 +10V GAIN, NO LOAD ±10V GAIN, NO LOAD –0.025 –40 25 TEMPERATURE (°C) Figure 11. Gain Error vs. Temperature 2 +24V –24V ...
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AD5748 –8 – TIME (µs) Figure 17. Full-Scale Positive Step –8 – TIME (µs) Figure 18. Full-Scale Negative Step 40 ...
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AV DD 2.5 2.0 1.5 1.0 V 0.5 0 –1.5 –1.0 –0.5 0 0.5 1.0 TIME (ms) Figure 23. AV and V vs. Time on Power-Up DD OUT 1.0 0.8 0.6 0.4 0.2 OUT 0 –0.2 1.5 ...
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AD5748 CURRENT OUTPUT 0.004 +4mA TO +20mA 0mA TO +20mA 0.002 0 –0.002 –0.004 –0.006 –0.008 AV = +24V –24V SS –0.010 0 0.585 1.170 1.755 2.341 V (V) IN Figure 24. Integral Nonlinearity Error vs. V ...
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TO +20mA EXTERNAL R SET 0.08 0mA TO +20mA EXTERNAL R SET +4mA TO +20mA EXTERNAL R SET 0.06 0mA TO +20mA EXTERNAL R SET 0.04 0.02 0 –0.02 –0.04 –0.06 –0.08 –0.10 +11.2/–10.8 ±15.0 ±24.0 SUPPLY VOLTAGES ...
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AD5748 6 +4mA TO +20mA EXTERNAL R 0mA TO +20mA EXTERNAL –2 – +24V –24V SS –6 –40 25 TEMPERATURE (°C) Figure 36. Zero-Scale Error vs. Temperature, External R 25 +4mA ...
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AV COMPLIANCE DD 1.0 0.8 0.6 0.4 0.2 0 –40 25 TEMPERATURE (°C) Figure 42. Output Compliance vs. Temperature Tested When I = 10.8 mA OUT OUT –2 ...
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AD5748 –1 –2 AI –3 ±10.8 ±15.0 ±24.0 AV /AV ( Figure 47. AI /AI vs ±26 ...
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TERMINOLOGY Total Unadjusted Error (TUE) TUE is a measure of the output error taking all the various errors into account: INL error, offset error, gain error, and output drift over supplies, temperature, and time. TUE is expressed as a percentage ...
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AD5748 THEORY OF OPERATION The AD5748 is a single-channel, precision, voltage/current output driver with hardware or software programmable output ranges. The software ranges are configured via an SPI-/ MICROWIRE-compatible serial interface. The analog input to the AD5748 is provided from ...
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SCLK SDI/DIN SDO MCU SYNC1 Figure 50. Typical System Configuration in Hardware Mode Using Internal DAC Reference (Pull-Up Resistors Not Shown for Open-Drain Outputs) Table 5. Suggested Parts for Use with AD5748 DAC Reference Power AD5660 Internal ADP1720 AD5664R Internal ...
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AD5748 CURRENT OUTPUT ARCHITECTURE The voltage input from the analog input VIN pin ( 4.096 V) is either converted to a current (see Figure 51), which is then mirrored to the supply rail so that the application simply ...
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DEFAULT REGISTERS AT POWER-ON The AD5748 power-on reset circuit ensures that all registers are loaded with zero code. In software SPI mode, the part powers up with all outputs dis- abled (OUTEN bit = 0). The user must set the ...
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AD5748 Bit Description R3, R2, R1, R0 Selects output configuration in conjunction with RSET RSET ...
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Readback Operation Readback mode is activated by selecting the correct device address (A2, A1, A0) and then setting the R/ W bit default, the SDO pin is disabled. After having addressed the AD5748 for a read operation, ...
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AD5748 DETAILED DESCRIPTION OF FEATURES OUTPUT FAULT ALERT—SOFTWARE MODE In software mode, the AD5748 is equipped with one FAULT pin; this is an open-drain output allowing several AD5748 devices to be connected together to one pull-up resistor for global fault ...
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CURRENT SETTING RESISTOR Referring to Figure internal sense resistor as part of SET the voltage-to-current conversion circuitry. The nominal value of the internal current sense resistor is 15 kΩ. To allow for over- range capability in ...
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AD5748 APPLICATIONS INFORMATION TRANSIENT VOLTAGE PROTECTION The AD5748 contains ESD protection diodes that prevent damage from normal handling. The industrial control environment can, however, subject I/O circuits to much higher transients. To protect the AD5748 from excessively high voltage transients, ...
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GALVANICALLY ISOLATED INTERFACE In many process control applications necessary to provide an isolation barrier between the controller and the unit being controlled to protect and isolate the controlling circuitry from any hazardous common-mode voltages that may occur. The ...
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... SEATING PLANE ORDERING GUIDE 1 Model TUE Accuracy AD5748ACPZ ±0. ±0.5% I OUT AD5748ACPZ-RL7 ±0. ±0.5% I OUT RoHS Compliant Part. ©2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 5.00 BSC SQ 0.60 MAX 24 ...