AD8303 Analog Devices, AD8303 Datasheet
AD8303
Specifications of AD8303
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AD8303 Summary of contents
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... Additionally input sets the output to zero scale or to 1/2 scale based on the level applied to the MSB pin. A power shutdown feature reduces power dissipation to less than 3 W. The AD8303 is specified over the extended industrial (– +85 C) temperature range. AD8303s are available in plastic DIP and low profile 1.75 mm height SO-14 surface mount packages ...
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... AD8303–SPECIFICATIONS +3 V OPERATION (@ +3.6 V, – Parameter STATIC PERFORMANCE 2 Resolution 2 Relative Accuracy 2 Differential Nonlinearity 2 Differential Nonlinearity Zero-Scale Error 3 Full-Scale Voltage 3, 4 Full-Scale Tempco ANALOG OUTPUTS Output Current Output Resistance to GND 4 Capacitive Load REFERENCE OUTPUT Output Voltage LOGIC INPUTS Logic Input Low Voltage ...
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... 2.7 3.0 5 + 2.1 3.4 10.5 17 0.001 0.004 %/% AD8303 Units Bits LSB LSB LSB mV ppm ...
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... Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Model + 0 AD8303AN – MAX A JA AD8303AR The AD8303 contains 700 transistors. The die size measures 70 mil ) . . . . . . . . . . . 150 C D10 CSS t ...
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... MSB (Not to Scale LDB CLK 6 LDA SDI 7 8 –5– AD8303 DAC Register Function Latched Latched Latched Latched Updated with Current Shift Register Contents Transparent Loaded with 800 H Latched with 800 H Loaded with All Zeros Latched All Zeros No Effect ...
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... AD8303–Typical Performance Characteristics 120 POSITIVE V = +5V CURRENT DD 80 LIMIT 40 DATA = 800 TIED TO L +1.024V –40 NEGATIVE –80 CURRENT LIMIT –120 OUTPUT VOLTAGE – Volts Figure 4. I vs. V OUT OUT + DATA = 800 +3V ...
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... TEMPERATURE – C Figure 17. Supply Current vs. Temperature 500mV 100 90 V OUT 10 0% SHDN 1µs 5V Figure 20. Shutdown Recovery Time –7– AD8303 +2. 212 UNITS 1 0.5 FULL SCALE (DATA = FFF ) H 0 –0.5 ZERO SCALE (DATA = 000 ) H –1 0 100 200 ...
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... AD8303 THEORY OF OPERATION The AD8303 is a complete, ready-to-use, dual, 12-bit digital-to- analog converter. Only one +2 +5.5 V power supply is necessary for operation. It contains two voltage-switched, 12-bit, laser-trimmed digital-to-analog converters, a curvature- corrected bandgap reference, rail-to-rail output op amps, input shift register, and two DAC registers. The serial data interface consists of a serial data input (SDI), clock (CLK), chip select (CS) and two DAC load strobe pins (LDA and LDB) ...
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... AD8303 power supply. If this mode of interface is used, make sure that the V of the 5 V CMOS meets the V AD8303 operating See Figure 6 for a graph for digital logic input threshold versus operating V +5V 10-22µF 0.1µ ...
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... C sends two 8-bit bytes, the MSBs are ignored (Figure 28). The CLK pin is only enabled when Chip Select (CS) is low. If only one AD8303 is connected to a serial data bus, then CS can be tied (hardwired) to ground. BYTE 1 ...
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... Figure 29. Unipolar Output Operation UNIPOLAR OUTPUT OPERATION This is the basic mode of operation for the AD8303. As shown in Figure 29, the AD8303 has been designed to drive loads as low parallel with 500 pF. The code table for this operation is shown in Table II. Table II. Unipolar Code Table ...
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... Voltage (V) ignored. This feature is valuable because most Cs only transmit data in 8-bit increments. Thus, the C sends 16 bits to the DAC 2.047 instead of 12 bits. The AD8303 will only respond to the last 12 0.001 bits clocked into the SDI input, however, so the serial data 0 interface is not affected. ...
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... C I/O pin. The MSB pin can be hardwired AD8303 ground, depending on whether a reset half DD scale is required. If the AD8303 is the only device on the serial interface, CS can also be tied to ground. Finally, SHDN can be tied Software for the interface of Figure 34 is shown in Figure 35. ...
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... SEND_IT MOV SHIFTREG,DAC_VAL0 ACALL SEND_IT MOV A,PORT1 ANL A,DAC_ADDR MOV PORT1,A ORL A,#00000011B MOV PORT1,A RET ; ;Convert the byte to LSB-first format and send it to the AD8303 SEND_IT: MOV LOOPCOUNT,#8 BYTESWAP: MOV A,SHIFTREG RLC A MOV SHIFTREG,A MOV A,SENDBYTE RRC A MOV SENDBYTE,A DJNZ ...
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... BSC 14-Lead Narrow Body SOIC (R-14) 0.3444 (8.75) 0.3367 (8.55 0.1574 (4.00) 0.2440 (6.20) 0.1497 (3.80 0.2284 (5.80) 0.0688 (1.75) PIN 1 0.0196 (0.50) 0.0098 (0.25) 0.0532 (1.35) 0.0099 (0.25) 0.0040 (0.10) 8 0.0500 0.0192 (0.49) 0 SEATING 0.0099 (0.25) (1.27) 0.0138 (0.35) PLANE BSC 0.0075 (0.19) –15– AD8303 0.195 (4.95) 0.115 (2.93) 0.015 (0.38) 0.008 (0.20 0.0500 (1.27) 0.0160 (0.41) ...
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... AD8303 –16– REV. 0 ...