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AD9732BRS Datasheet(PDF) 4 Page - Analog Devices |
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AD9732BRS Datasheet(HTML) 4 Page - Analog Devices |
4 / 11 page AD9732 –4– REV. A 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 AD9732 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. WARNING! ESD SENSITIVE DEVICE ABSOLUTE MAXIMUM RATINGS* Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +VS +VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6 V Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . –0.7 V to +VS Analog Output Current . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Control Amplifier Input Voltage Range . . . . . . . . . 0 V to +VS Reference Input Voltage Range . . . . . . . . . . . . . . . 0 V to +VS Internal Reference Output Current . . . . . . . . . . . . . . . 500 µA Control Amplifier Output Current . . . . . . . . . . . . . . ±2.5 mA Operating Temperature . . . . . . . . . . . . . . . . . –40 °C to +85°C Storage Temperature . . . . . . . . . . . . . . . . . . –65 °C to +150°C Maximum Junction Temperature . . . . . . . . . . . . . . . +175 °C Lead Temperature (10 sec) Soldering . . . . . . . . . . . . +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 outside of those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. PIN FUNCTION DESCRIPTIONS Pin Number Name Function 1 D9 (MSB) Most significant data bit of digital input word. 2–9 D8–D1 Eight bits of 10-bit digital input word. 10 D0 (LSB) Least significant data bit of digital input word. 11 CLOCK TTL-compatible edge-triggered latch enable signal for on-board registers. 12, 13 NC No internal connection to this pin. Recommend tie to ground. 14, 15, 28 DIGITAL +VS +5 V supply voltage for digital circuitry. 16, 22, 27 GND Converter Ground. 18 ANALOG +VS +5 V supply voltage for analog circuitry. 17 RSET Connection for external reference set resistor; nominal 1.96 k Ω. Full-scale output current = 32 [Control Amp + VS] (Reset). 19 ANALOG RETURN Analog Return. This point and the reference side of the DAC load resistors should be connected to the same potential (Analog +VS). 20 IOUT Analog current output; full-scale current occurs with a digital word input of all “1s” with external load resistor, output voltage = IOUT (RLOAD RINTERNAL). RINTERNAL is nominally 240 Ω. 21 IOUTB Complementary analog current output; full-scale current occurs with a digital word input of all “0s.” 23 REF IN Normally connected to CONTROL AMP OUT (Pin 24). Direct line to DAC current source network. Voltage changes (noise) at this point have a direct effect on the full- scale output current of the DAC. Full-scale current output = 32 (CONTROL AMP IN/ RSET) when using internal amplifier. DAC load is virtual ground. 24 CONTROL AMP OUT Normally connected to REF IN (Pin 23). Output of internal control amplifier, which provides a reference for the current switch network. 25 REF OUT Normally connected to CONTROL AMP IN (Pin 26). Internal voltage reference, nominally 3.75 V. 26 CONTROL AMP IN Normally connected to REF OUT (Pin 25) if not connected to external reference. PIN CONFIGURATION TOP VIEW (Not to Scale) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 AD9732 NC = NO CONNECT DIGITAL +VS NC NC CLOCK D0 (LSB) D1 D2 D9 (MSB) D8 D7 D6 D3 D4 D5 DIGITAL +VS GND RSET ANALOG +VS ANALOG RETURN IOUT IOUTB DIGITAL +VS GND CONTROL AMP IN REF OUT GND REF IN CONTROL AMP OUT |
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