AD8842 Analog Devices, AD8842 Datasheet
AD8842
Specifications of AD8842
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AD8842 Summary of contents
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... The AD8842 provides eight general purpose digitally controlled voltage adjustment devices. The TrimDAC® capability allows replacement of the mechanical trimmer function in new designs. The AD8842 is ideal for gain control kHz bandwidth signals. The four-quadrant multiplying capability is useful for signal inversion and modulation often found in video vertical deflection circuitry ...
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... AD8842–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol STATIC ACCURACY—All Specifications Apply for DACs Resolution N Integral Nonlinearity Error INL Differential Nonlinearity DNL Full-Scale Gain Error G Output Offset V Output Offset Drift TCV VOLTAGE INPUTS—Applies to All Inputs V 1 Input Voltage Range ...
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... 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. Although the AD8842 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... V D OUT OUT OUT OUT SDI AD8842 GND TOP VIEW SDO (Not to Scale CLK OUT ...
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... No Operation Shift One Bit in from SDI (Pin 20), Shift One Bit* Out from SDO (Pin 18) All DAC Registers = 80 H Load Serial Register Data into DAC(X) Register Serial Data Input Register Loading Disabled –5– AD8842 DAC UPDATED NO OPERATION DAC A DAC B DAC C DAC D ...
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... AD8842–Typical Performance Characteristics +1/2 DACs SUPERIMPOSED 0 – – +3V IN +1/2 0 DACs SUPERIMPOSED –1 128 192 256 DIGITAL INPUT CODE – Decimal Figure 4. Linearity Error vs. Digital Code + AVG +2 19 AVG 18 AVG – ...
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... IN Lower Trace 500ns Figure 17. Digital Feedthrough— mV/Div Code 7F OUT 50ns @ 5 mV/Div Figure 18. Clock Feedthrough—V –7– AD8842 5V 100 V/Div OUT 10mV 100 50ns @ 10 mV/Div, OUT 100 ...
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... AD8842 2V 100 Figure 19. 10 kHz Sawtooth Waveform, Upper Trace V , Lower Trace V IN –3dB FREQUENCY 300 200 100 0 –100 –200 500 mVp-p INPUT AMPLITUDE –300 –400 FREQUENCY – MHz Figure 21. AC Sweep Frequency 500 mV p-p Amplitude Response 100mV ...
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... CIRCUIT OPERATION The AD8842 is a general purpose 8-channel signal- level adjustment device designed to replace potentiometers used in the three-terminal connection mode. Eight independent channels of programmable signal level control are available in this 24-pin package device. The outputs are completely buffered providing output drive-current to drive external loads ...
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... Comments ( DIGITAL INTERFACING The four digital input pins (CLK, SDI, LD, PR) of the AD8842 Inverted FS were designed for TTL and 5 V CMOS logic compatibility. The SDO output pin offers good fanout in CMOS logic applications and can easily drive several AD8842s. ...
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... The digital feedthrough and crosstalk photographs shown in the typical performance characteristics section display these characteristics (Figures 15 and 17). A REV. Figure 32 shows a three-wire interface for a single AD8842 that LD easily cascades for multiple packages. This circuit topology often AD8842 CLK called daisy chaining requires preformating all the serial data for #1 each package in the chain ...
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... AD8842 OUTLINE DIMENSIONS 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 1.280 (32.51) 1.250 (31.75) 1.230 (31.24 0.280 (7.11) 0.250 (6.35) 1 0.240 (6.10) 12 0.100 (2.54) BSC 0.060 (1.52) 0.015 (0.38) 0.015 (0.38) MIN GAUGE SEATING PLANE 0.005 (0.13) MIN 0.070 (1.78) 0.060 (1.52) 0.045 (1.14) COMPLIANT TO JEDEC STANDARDS MS-001 CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN ...
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... AD8842ANZ −40°C to +85°C AD8842AR −40°C to +85°C AD8842AR-REEL −40°C to +85°C AD8842ARZ −40°C to +85°C AD8842ARZ-REEL −40°C to +85° RoHS Compliant Part. REVISION HISTORY 10/11—Rev Rev. A Changes to Pin 13 Mnemonic ......................................................... 4 Updated Outline Dimensions ....................................................... 12 Changes to Ordering Guide .......................................................... 13 4/94— ...