AD7394ARZ Analog Devices Inc, AD7394ARZ Datasheet
AD7394ARZ
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AD7394ARZ Summary of contents
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FEATURES Micropower: 100 μA/DAC 0.1 μA typical power shutdown Single-supply 2 5.5 V operation 12-bit resolution Serial interface with Schmitt trigger inputs APPLICATIONS Automotive output span voltage Portable communications Digitally controlled calibration PC peripherals GENERAL DESCRIPTION The AD7394 ...
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AD7394 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 AD7394 Electrical Characteristics ............................................. 3 Absolute Maximum Ratings ............................................................ 7 ESD Caution .................................................................................. 7 ...
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SPECIFICATIONS AD7394 ELECTRICAL CHARACTERISTICS @ V = 2.5 V, −40°C < T < +85°C, unless otherwise noted. REF IN A Table 1. Parameter STATIC PERFORMANCE 1 Resolution 2 Relative Accuracy 2 Differential Nonlinearity Zero-Scale Error Full-Scale Voltage Error 3 Full-Scale ...
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AD7394 Parameter SUPPLY CHARACTERISTICS Power Supply Range Shutdown Supply Current Positive Supply Current Power Dissipation Power Supply Sensitivity 1 One LSB = V /4096 V for the 12-bit AD7394. REF 2 The first two codes (000 , 001 ) are ...
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Timing Diagrams SDI CLK CS t LDA, LDB LD1 SDI CLK LDA, LDB OUT ZS SHDN I D11 D10 CSS LDW ...
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AD7394 Table 2. Control Logic Truth Table CS RS SHDN LDA/LDB CLK MSB ↑ ↑ ...
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ABSOLUTE MAXIMUM RATINGS Table 4. Parameter V to GND GND REF Logic Inputs to GND V to GND OUT I Short Circuit to GND OUT Package Power Dissipation Thermal Resistance θ JA 14-Lead SOIC Package (R-14) Maximum ...
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AD7394 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 AGND Analog Ground DAC A Voltage Output. OUTA 3 V DAC Reference Voltage Input Terminal. Establishes DAC full-scale output voltage. Pin can ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1 –55°C A 1.0 0.5 0 –0 +25°C, +85°C A –1.0 –1.5 0 500 1000 1500 2000 2500 CODE (Decimal) Figure 6. Integral Nonlinearity Error vs. Code 200 UNITS T ...
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AD7394 5.0 4.5 4.0 3.5 V FROM LOW TO HIGH LOGIC 3.0 2.5 2.0 V FROM HIGH TO LOW 1.5 LOGIC 1 (V) DD Figure 12. Logic Threshold vs. Supply Voltage 1800 ...
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V = 2.5V REF 9 CODE = 800 –10 –9 –8 –7 –6 –5 –4 –3 ΔV (LSB) OUT Figure 16. ...
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AD7394 THEORY OF OPERATION The AD7394 is a pin compatible, dual, 12-bit digital-to-analog converter. This single-supply operation device consumes less than 200 microamps of current while operating from power supplies in the 2 5.5 V range, making it ...
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POWER SUPPLY The very low power consumption of the AD7394 is a direct result of a circuit design optimizing the use of a CBCMOS process. By using the low power characteristics of CMOS for the logic, and the low noise, ...
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AD7394 DIGITAL INTERFACE The AD7394 has a serial data input. A functional block diagram of the digital section is shown in Figure 22, while Table 2 contains the truth table for the logic control inputs. Three pins control the serial ...
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POWER SHUTDOWN (SHDN) Maximum power savings can be achieved by using the power shutdown control function. This hardware activated feature is controlled by the active low input SHDN pin. This pin has a Schmitt trigger input, which helps to desensitize ...
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... Model Res (LSB) Temperature Range AD7394ARZ 12 −40°C to +85°C AD7394ARZ-REEL7 12 −40°C to +85°C 1 The AD7394 contains 709 transistors. The die size measures 70 mil × 99 mil RoHS Compliant Part. ©1998–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...