Datenblatt-Suchmaschine für elektronische Bauteile |
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AD7112 Datenblatt(PDF) 4 Page - Analog Devices |
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AD7112 Datenblatt(HTML) 4 Page - Analog Devices |
4 / 12 page AD7112 REV. 0 –4– ABSOLUTE MAXIMUM RATINGS* VDD to AGND or DGND . . . . . . . . . . . . . . . . . . –0.3 V, +7 V AGND to DGND . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V Digital Inputs to DGND . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V OUT A, OUT B to AGND . . . . . . . . . . . –0.3 V, VDD + 0.3 V VIN A, VIN B to AGND . . . . . . . . . . . . . . . . . . . . . . . . . ±25 V VRFB A, VRFB B to AGND . . . . . . . . . . . . . . . . . . . . . . . ± 25 V Operating Temperature Range All Versions . . . . . . . . . . . . . . . . . . . . . . . . –40 °C to +85°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +150 °C Storage Temperature . . . . . . . . . . . . . . . . . –65 °C to +150°C Power Dissipation, DIP . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W θ JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 102 °C/W Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300 °C Power Dissipation, SOIC . . . . . . . . . . . . . . . . . . . . . . . . . 1 W θ JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 75 °C/W Lead Temperature (Soldering) Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . . 215 °C Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 °C *Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Only one Absolute Maximum Rating may be applied at any one time. 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 AD7112 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. TERMINOLOGY RESOLUTION: Nominal change in attenuation when moving between two adjacent codes. MONOTONICITY: The device is monotonic if the analog out- put decreases or remains constant as the wdigital code in- creases. FEEDTHROUGH ERROR: That portion of the input signal which reaches the output when all digital inputs are high. OUTPUT CAPACITANCE: Capacitance from OUT A or OUT B to ground. GAIN ERROR: Gain error results from a mismatch between RFB (the feedback resistance) and the R-2R ladder resistance. Its effect in a LOGDAC is to produce a constant additive at- tenuation error in dB over the whole range of the DAC. ACCURACY: The difference (measured in dB) between the ideal transfer function as listed in Table I and the actual trans- fer function as measured with the device. DIGITAL-TO-ANALOG GLITCH IMPULSE: The amount of charge injected from the digital inputs to the analog output when the inputs change state. This is normally specified as the area of the glitch in either pA-s or nV-s depending on whether the glitch is measured as a current or voltage signal. Glitch im- pulse is measured with VIN = AGND. ORDERING INFORMATION Specified Temperature Accuracy Package Model Range Range Option* AD7112BN –40 °C to +85°C 0 dB to 60 dB N-20 AD7112CN –40 °C to +85°C 0 dB to 72 dB N-20 AD7112BR –40 °C to +85°C 0 dB to 60 dB R-20 AD7112CR –40 °C to +85°C 0 dB to 72 dB R-20 *N = Plastic DIP; R = SOIC. PIN FUNCTION DESCRIPTION Pin Mnemonic Description 1 AGND Analog Ground. 2 OUT A Current Output Terminal of DAC A. 3RFB A Feedback Resistor for DAC A. 4VIN A Reference Input to DAC A 5 DGND Digital Ground. 6 DAC A / Selects Which DAC Can Accept Data from DAC B Input Port. 7–14 DB7–DB0 8 Data Inputs. 15 CS Chip Select Input, Active Low. 16 WR Write Input, Active Low. 17 VDD Power Supply Input 5 V ± 5%. 18 VIN B Reference Input to DAC B. 19 RFB B Feedback Resistor for DAC B. 20 OUT B Current Output Terminal of DAC B. PIN CONFIGURATION DIP/SOIC AGND OUT A DGND (MSB) DB7 DAC A/DAC B DB6 DB5 DB4 RFB A VIN A OUT B RFB B VIN B VDD DB0 (LSB) DB1 DB2 DB3 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 TOP VIEW (Not to Scale) AD7112 WR CS |
Ähnliche Teilenummer - AD7112_15 |
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Ähnliche Beschreibung - AD7112_15 |
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