AD7805CR Analog Devices Inc, AD7805CR Datasheet
AD7805CR
Specifications of AD7805CR
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AD7805CR Summary of contents
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FEATURES Four 10-Bit DACs in One Package Serial and Parallel Loading Facilities Available AD7804 Quad 10-Bit Serial Loading AD7805 Quad 10-Bit Parallel Loading AD7808 Octal 10-Bit Serial Loading AD7809 Octal 10-Bit Parallel Loading +3 Operation ...
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AD7804/AD7805/AD7808/AD7809 AD7804/AD7805–SPECIFICATIONS Reference = Internal Reference 100 pF Parameter B Grade STATIC PERFORMANCE MAIN DAC Resolution 10 Relative Accuracy Gain Error 2 Bias Offset Error –80/+40 3 –V Zero-Scale Error Monotonicity 9 Minimum Load Resistance 2 ...
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AD7808/AD7809–SPECIFICATIONS Reference = Internal Reference 100 pF Parameter STATIC PERFORMANCE MAIN DAC Resolution Relative Accuracy Gain Error 2 Bias Offset Error Zero-Scale Error Monotonicity Minimum Load Resistance SUB DAC Resolution Differential Nonlinearity OUTPUT CHARACTERISTICS 3 Output ...
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AD7804/AD7805/AD7808/AD7809 AD7804/AD7808 TIMING CHARACTERISTICS Internal Reference. All specifications T MIN Limit at T Parameter All Versions t 100 ...
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AD7805/AD7809 TIMING CHARACTERISTICS = Internal Reference. All specifications T Limit at T Parameter All Versions ...
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... – +85 C AD7804BR 3 – +85 C AD7805BN 3 – +85 C AD7805BR 3 – +85 C AD7805BRS 3 – +85 C AD7805CR 3 – +85 C AD7808BN 3 – +85 C AD7808BR 3 – +85 C AD7809BST 3 – +85 C CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. ...
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AD7804 AD7808 Pin No. Pin No. Mnemonic AGND OUT OUT 4 4 REFOUT OUT OUT FSIN 5 9 LDAC 6 10 ...
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AD7804/AD7805/AD7808/AD7809 AD7805 AD7809 Pin No. Pin No. Mnemonic 1, 11, 13 39, 40 AGND OUT OUT 4 43 REFOUT 5–10 DB9–DB2 12, ...
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TERMINOLOGY Relative Accuracy For the DACs, relative accuracy or endpoint nonlinearity is a measure of the maximum deviation, in LSBs, from a straight line passing through the endpoints of the DAC transfer func- tion. Figures 32 and 33 show the ...
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AD7804/AD7805/AD7808/AD7809 MSB X MD0 = 0 MD1 = Don’t Care Figure 4. AD7804/AD7808 System Control Register Loading Sequence DB15 (MSB) X MD0 = 1 MD1 = 0 A2 Don’t Care *Applicable to the AD7808 ...
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V can be the internal bandgap reference, the internal V BIAS reference or the external REFIN as determined by MX1 and MX0 in the channel control register. A second external refer- ence can be used if required by overdriving the ...
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AD7804/AD7805/AD7808/AD7809 determined by MX1 and MX0 in the channel control register as shown in Table III. The internal V /2 reference is provided at DD the COMP pin. This internal reference can be overdriven with an external reference thus providing ...
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Main DAC to the bottom of the transfer function, V With twos complement coding the output of the DAC is cleared . A hardware clear always clears the to midscale which is V BIAS output of the Sub ...
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AD7804/AD7805/AD7808/AD7809 Table IVb. AD7809 DAC Data/Control Register Selection Table MODE ...
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POWER-UP CONDITIONS (POWER-ON RESET) When power is applied to the AD7805/AD7809 the device powers known condition. The device powers up in sys- tem standby (SSTBY) mode where all DACs in the package are in low power mode, ...
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AD7804/AD7805/AD7808/AD7809 POWER-DOWN AND STANDBY FUNCTIONS There are two distinct low power modes on the device, power- down mode and standby mode. When in power-down mode all circuitry including the reference are put into low power mode and power dissipation from ...
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Table VII shows the twos complement transfer function for the Sub DAC. Figure 23 shows the Sub DAC transfer function for twos complement coding. Any Sub DAC output voltage can be expressed as: V " /16 (NB/256) OUT ...
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AD7804/AD7805/AD7808/AD7809 Table VI and Figure 22 show the analog outputs available for the above configuration. The following is the procedure re- quired if the complete transfer function needs to be offset around the V point. Table VII and Figure 23 ...
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Table IX. Offset Binary Code Table for Sub DAC Digital Input Analog Output MSB . . . LSB 11111111 V /16 BIAS 11111110 V /16 BIAS 10000001 V /16 BIAS 10000000 0 01111111 –V /16 BIAS 00000001 –V /16 BIAS ...
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AD7804/AD7805/AD7808/AD7809 BIAS BIAS 32 32 SUB DAC RANGE Figure 28. Pictorial View of Transfer Function for Any DAC Channel Grounding and Layout Techniques To obtain optimum performance from the AD7804/AD7805/ AD7808/AD7809 care should be ...
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Typical Performance Characteristics–AD7804/AD7805/AD7808/AD7809 0.150000 MAIN DAC = ZERO SCALE SUB DAC = MID SCALE 0.125000 BIAS + 0.100000 V = 5.5V DD 0.075000 0.050000 DD 0.025000 SOURCE CURRENT ...
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AD7804/AD7805/AD7808/AD7809 MICROPROCESSOR INTERFACING AD7804/AD7808–ADSP-2101/ADSP-2103 Interface Figure 35 shows a serial interface between the AD7804/AD7808 and the ADSP-2101/ADSP-2103. The ADSP-2101/ADSP- 2103 should be set up to operate in the SPORT Transmit Alter- nate Framing Mode. The ADSP-2101/ADSP-2103 SPORT is programmed through ...
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AD7805/AD7809–ADSP-2101 Interface Figure 38 shows a parallel interface between the AD7805/AD7809 and the ADSP-2101/ADSP-2103 digital signal processor. Fast interface timing allows the AD7805/AD7809 interface directly to the DSP. In this interface an external timer is used to update the DACs. ...
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AD7804/AD7805/AD7808/AD7809 APPLICATIONS Opto-Isolated Interface for Process Control Applications The AD7804/AD7808 has a versatile serial three-wire serial interface making it ideal for generating accurate voltages in process control and industrial applications. Due to noise, safety requirements, or distance, it may be ...
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Low Cost, Two-Channel Mixer Using AD7805, SSM2164 and OP275 The SSM2164 is a quad voltage controlled amplifier (VCA) with 120 dB of gain control range. Each VCA in the package is a current in, current out device with a –33 ...
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AD7804/AD7805/AD7808/AD7809 PAGE INDEX (AD7804/AD7808 SERIAL INTERFACE PART) Topic Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features ...
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Plastic DIP (N-28) 28 PIN 1 1 1.565 (39.70) 1.380 (35.10) 0.250 (6.35) MAX 0.200 (5.05) 0.125 (3.18) 0.022 (0.558) 0.100 (2.54) 0.014 (0.356) BSC 0.625 (15.87) 0.600 (15.24) 0.195 (4.95) 0.125 (3.18) 0.015 (0.381) 0.008 (0.204) SOIC (R-28) 28 ...
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AD7804/AD7805/AD7808/AD7809 Plastic DIP (N-24 PIN 1.275 (32.30) 1.125 (28.60) 0.210 (5.33) MAX 0.160 (4.06) 0.115 (2.92) 0.022 (0.558) 0.100 (2.54) 0.070 (1.77) 0.014 (0.356) BSC 0.045 (1.15) SOIC (R-24) 0.614 (15.6) 0.598 (15. ...