AD8802AR Analog Devices Inc, AD8802AR Datasheet
AD8802AR
Specifications of AD8802AR
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AD8802AR Summary of contents
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FEATURES Low Cost Replaces 12 Potentiometers Individually Programmable Outputs 3-Wire SPI Compatible Serial Input Power Shutdown <55 Watts Including I Midscale Preset, AD8802 Separate V Range Setting, AD8804 REFL + Single Supply Operation APPLICATIONS Automatic ...
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AD8802/AD8804–SPECIFICATIONS Parameter STATIC ACCURACY Specifications apply to all DACs Resolution Differential Nonlinearity Error Integral Nonlinearity Error Full-Scale Error Zero Code Error DAC Output Resistance Output Resistance Match REFERENCE INPUT 2 Voltage Range REFH Input Resistance 3 REFL Input Resistance 3 ...
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... DAC Output #10, addr = 1001 2 18 O11 DAC Output #11, addr = 1010 19 O12 DAC Output #12, addr = 1011 Positive power supply, specified for operation both +3 V and + Model FTN H AD8802AN RS AD8802AR RS AD8802ARU RS AD8804AN REFL AD8804AR REFL AD8804ARU REFL –3– AD8802/AD8804 PIN CONFIGURATIONS REFH ...
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AD8802/AD8804–Typical Performance Characteristics + +5V REFH REFL 0.5 0.25 0 –0.25 –0.5 –0.75 – 128 160 CODE – Decimal Figure 1. INL vs. Code 1 0.75 ...
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T ALL DIGITAL INPUTS 10 TIED TOGETHER 1.0 0.1 0. +3V DD 0.001 0.0001 0 0.5 1 1.5 2 2.5 3 INPUT VOLTAGE – Volts Figure 7. Supply Current vs. Logic Input Voltage ...
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AD8802/AD8804 0.04 0. – 2 –0.02 –0.04 200 300 400 0 100 HOURS OF OPERATION AT 150 C Figure 13. Full-Scale Error Accelerated by Burn-In OPERATION The AD8802/AD8804 provides twelve channels of program- mable ...
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PROGRAMMING THE OUTPUT VOLTAGE The output voltage range is determined by the external refer- ence connected to V and V pins. See Figure 16 for a REFH REFL simplified diagram of the equivalent DAC circuit. In the case of the ...
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AD8802/AD8804 CS ADDR DECODE SERIAL CLK REGISTER SDI Figure 18. Equivalent Control Logic The target DAC register is loaded with the last eight bits of the serial data-word completing one DAC update. Twelve separate 12-bit data words must be clocked ...
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100k 100k + REFH A OP191 –5V AD8802/ AD8804 +12V OP193 B V GND REFL AD8804 100k ONLY 100k Figure 23. Increasing Output Voltage Swing DAC B of Figure ...
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AD8802/AD8804 ; ; This subroutine loads an AD8802/AD8804 DAC from an 8051 microcomputer, ; using the 8051’s serial port in MODE 0 (Shift Register Mode). ; The DAC value is stored at location DAC_VAL ; The DAC address is stored ...
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This 8051 C subroutine loads an AD8802 or AD8804 DAC with an 8-bit value, ; using the 8051’s parallel port #1. ; The DAC value is stored at location DAC_VALUE ; The DAC address is stored at location DAC_ADDR ...
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AD8802/AD8804 * * AD8802/AD8804 to M68HC11 Interface Assembly Program * * M68HC11 Register definitions * PORTC EQU $1003 * DDRC EQU $1007 PORTD EQU $1008 * DDRD EQU $1009 SPCR EQU $1028 * SPSR EQU $1029 * SPDR EQU $102A ...
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LDAA $0000 STAA SDI1 * * Enter Contents of SDI2 Data Register * LDAA $0001 STAA SDI2 * LDX #SDI1 LDY #$1000 * * Reset AD8802 to one-half scale (AD8804 does not have a Reset input) * BCLR PORTC,Y ...
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AD8802/AD8804 P0.0 P3.2 P3.1 USER INPUTS P3.0 P3.3 P0 2nd AD8802/4 80CL51 µC ARRAY IF NEEDED P2.0 P2.1 P2.2 P2.3 P1.0/INT2 P2.4 +5V 0.01µ DIS TLC555 3 OUT THR TRIG GND Figure 27. Temperature Sensor ...
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RGB 5 7, 11, 17 LM1204 VIDEO INPUT AD8802/4 TO µC CLK SDI CONTRAST O3 = ...
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AD8802/AD8804 IN +10V 10µF 1/2 OP279 30k 2.0V 20k 20-Pin Plastic DIP Package (N-20) 1.07 (27.18) MAX 20 11 0.255 (6.477) 0.245 (6.223 0.060 (1.52) PIN 1 0.015 (0.38) 0.145 (3.683) MAX 0.125 (3.175) MIN SEATING 0.021 (0.533) ...