dac8512fz Analog Devices, Inc., dac8512fz Datasheet
dac8512fz
Related parts for dac8512fz
dac8512fz Summary of contents
Page 1
... Fax: 617/326-8703 +5 V, Serial Input Complete 12-Bit DAC DAC8512 FUNCTIONAL BLOCK DIAGRAM REF 12-BIT DAC 12 6 CLR DAC REGISTER SERIAL REGISTER CLK 3 SDI 4 4096 World Wide Web Site: http://www.analog.com © Analog Devices, Inc., 1996 OUT GND 7 ...
Page 2
DAC8512–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol STATIC PERFORMANCE Resolution N Relative Accuracy INL Differential Nonlinearity DNL Zero-Scale Error V ZSE Full-Scale Voltage V FS Full-Scale Tempco TCV ANALOG OUTPUT Output Current I OUT Load Regulation at Full Scale L REG Capacitive ...
Page 3
WAFER TEST LIMITS (@ Parameter Symbol STATIC PERFORMANCE Relative Accuracy INL Differential Nonlinearity DNL Zero-Scale Error V Full-Scale Voltage V LOGIC INPUTS Logic Input Low Voltage V Logic Input High Voltage V Input Leakage Current ...
Page 4
DAC8512 D11 D10 SDI CLK t css CS t ld1 LD SDI CLK LD CLR FS V OUT CLK CLR LD Serial Shift Register Function Effect ...
Page 5
PIN CONFIGURATIONS SO-8 P-DIP-8 & Cerdip OUT DAC8512 GND TOP VIEW CLK CLR 3 6 (Not to Scale) CLK 3 LD SDI 4 5 SDI 4 PIN ...
Page 6
DAC8512 OUTPUT SECTION The rail-to-rail output stage of this amplifier has been designed to provide precision performance while operating near either power supply. P-CH N-CH Figure 4. Equivalent Analog Output Circuit Figure 4 shows an equivalent output schematic of the ...
Page 7
TIED TO AGND R TIED TO AGND FFFH DATA = FFF TIED TO +5V L DATA = 000H 0 10 ...
Page 8
DAC8512 — Typical Performance Characteristics + + LOAD L TIME – 10 s/DIV Figure 14. Rise Time Detail 60 TUE = INL + ...
Page 9
APPLICATIONS SECTION Power Supplies, Bypassing, and Grounding All precision converter products require careful application of good grounding practices to maintain full rated performance. Because the DAC8512 has been designed for +5 V applications ideal for those applications under ...
Page 10
DAC8512 Operating the DAC8512 on + +15 V Supplies Only Although the DAC8512 has been specified to operate on a single supply, a single +5 V supply may not be available in many applications. Since the ...
Page 11
Table III. Bipolar Code Table Hexadecimal Number Decimal Number in DAC Register in DAC Register F FF 4095 801 2049 800 2048 7FF 2047 000 0 To maintain monotonicity and accuracy, R1, R2, and R4 should be selected to match ...
Page 12
... F 2 0.1 F REF02 CLR DAC8512FZ SCLK 4 SDI 7 Figure 31. A High-Compliance, Digitally Controlled Precision Current Source A Single-Supply, Programmable Current Source The circuit in Figure 32 shows how the DAC8512 can be used with an OP295 single-supply, rail-to-rail output op amp to pro- vide a digitally programmable current sink from V consumes less than 3.8 mA, maximum. The DAC’ ...
Page 13
Opto-Isolated Interfaces for Process Control Environments In many process control type applications necessary to pro- vide an isolation barrier between the controller and the unit be- ing controlled. Opto-isolators can provide isolation in excess of 3 kV. The ...
Page 14
DAC8512 COUNTER CLK LOAD (X) DAC8512 CLK (Y) · LOAD = · DAC8512 CLK = LOAD SCLK Figure 36. Opto-lsolated Two-Wire Serial Interface Timing Diagram The timing diagram ...
Page 15
... V+ 0 CLR 5 LD DAC8512FZ 3 SCLK 4 SDI 7 Figure 38. A Digitally Controlled, Ultralow Noise VCA A Digitally Controlled, Ultralow Noise VCA The circuit in Figure 38 illustrates how the DAC8512 can be used to control an ultralow noise VCA, using the AD600/ AD602. The AD600/AD602 is a dual, low noise, wideband, variable gain amplifier based on the X-AMP topology ...
Page 16
DAC8512 A Serial DAC, Audio Volume Control The DAC8512 is well suited to control digitally the gain or at- tenuation of a voltage controlled amplifier. In professional audio mixing consoles, music synthesizers, and other audio processors, VCAs, such as the ...
Page 17
CLR 5 LD DAC8512 3 SCLK 4 SCI 7 CLK Figure 41. An Isolated, Programmable, 4-20 mA Process Controller For the values shown in Figure 41 3.9 A Digital Code + 4 mA OUT giving a ...
Page 18
DAC8512 DAC8512–M68HC11 Interface Program Source Code * PORTC EQU $1003 * DDRC EQU $1007 PORTD EQU $1008 * DDRD EQU $1009 SPCR EQU $1028 * SPSR EQU $1029 * SPDR EQU $102A * * SDI RAM variables ...
Page 19
TFRLP LDAA STAA * WAIT LDAA BPL * INX CPX BNE * *Update DAC output with contents of DAC register * BCLR BSET * BSET PULA When done, restore registers X, Y & A PULY PULX RTS REV. A 0,X ...
Page 20
DAC8512 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Pin Plastic DIP (P Suffix 0.280 (7.11) 0.240 (6.10 0.070 (1.77) 0.045 (1.15) 0.430 (10.92) 0.325 (8.25) 0.348 (8.84) 0.300 (7.62) 0.015 0.210 (0.381) TYP (5.33) MAX ...