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AD7541ASE Datasheet(PDF) 3 Page - Analog Devices |
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AD7541ASE Datasheet(HTML) 3 Page - Analog Devices |
3 / 8 page AD7541A –3– REV. B ABSOLUTE MAXIMUM RATINGS* (TA = +25 °C unless otherwise noted) VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +17 V VREF to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 V VRFB to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 V Digital Input Voltage to GND . . . . . . . . –0.3 V, VDD + 0.3 V OUT 1, OUT 2 to GND . . . . . . . . . . . . –0.3 V, VDD + 0.3 V Power Dissipation (Any Package) To +75 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mW Derates above +75 °C . . . . . . . . . . . . . . . . . . . . . . 6 mW/°C TERMINOLOGY RELATIVE ACCURACY Relative accuracy or endpoint nonlinearity is a measure of the maximum deviation from a straight line passing through the endpoints of the DAC transfer function. It is measured after adjusting for zero and full scale and is expressed in % of full- scale range or (sub)multiples of 1 LSB. DIFFERENTIAL NONLINEARITY Differential nonlinearity is the difference between the measured change and the ideal l LSB change between any two adjacent codes. A specified differential nonlinearity of ±1 LSB max over the operating temperature range insures monotonicity. GAIN ERROR Gain error is a measure of the output error between an ideal DAC and the actual device output. For the AD7541A, ideal maximum output is – 4095 4096 (VREF ). Gain error is adjustable to zero using external trims as shown in Figures 4, 5 and 6. OUTPUT LEAKAGE CURRENT Current which appears at OUTI with the DAC loaded to all 0s or at OUT2 with the DAC loaded to all 1s. MULTIPLYING FEEDTHROUGH ERROR AC error due to capacitive feedthrough from VREF terminal to OUT1 with DAC loaded to all 0s. OUTPUT CURRENT SETTLING TIME Time required for the output function of the DAC to settle to within 1/2 LSB for a given digital input stimulus, i.e., 0 to full scale. PROPAGATION DELAY This is a measure of the internal delay of the circuit and is mea- sured from the time a digital input changes to the point at which the analog output at OUT1 reaches 90% of its final value. DIGITAL-TO-ANALOG CHARGE INJECTION (QDA) This is a measure of the amount of charge injected from the digital inputs to the analog outputs when the inputs change state. It is usually specified as the area of the glitch in nV secs and is measured with VREF = GND and a Model 50K as the output op amp, C1 (phase compensation) = 0 pF. Operating Temperature Range Commercial (J, K Versions) . . . . . . . . . . . . . 0 °C to +70°C Industrial (A, B Versions) . . . . . . . . . . . . . –25 °C to +85°C Extended (S, T Versions) . . . . . . . . . . . . . –55 °C to +125°C Storage Temperature . . . . . . . . . . . . . . . . . . –65 °C to +150°C Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300 °C *Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. WARNING! ESD SENSITIVE DEVICE 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. Although the AD7541A 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. PIN CONFIGURATIONS DIP/SOIC LCCC PLCC 14 13 12 11 17 16 15 18 10 9 8 1 2 3 4 7 6 5 TOP VIEW (Not to Scale) AD7541A OUT1 BIT 12 (LSB) VDD (+) VREF IN RFEEDBACK OUT2 GND BIT 1 (MSB) BIT 9 BIT 10 BIT 11 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 20 19 1 2 3 18 14 15 16 17 4 5 6 7 8 9 1011 1213 TOP VIEW (Not to Scale) AD7541A GND BIT 1 (MSB) BIT 2 BIT 3 BIT 4 VDD BIT 12 (LSB) BIT 11 BIT 10 BIT 9 NC = NO CONNECT 20 19 18 1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 TOP VIEW (Not to Scale) PIN 1 IDENTIFIER GND BIT 1 (MSB) BIT 2 BIT 3 BIT 4 VDD BIT 12 (LSB) BIT 11 BIT 10 BIT 9 NC = NO CONNECT AD7541A |
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