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DAC14135 Scheda tecnica(PDF) 4 Page - National Semiconductor (TI) |
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DAC14135 Scheda tecnica(HTML) 4 Page - National Semiconductor (TI) |
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4 / 12 page  http://www.national.com 4 DAC14135 Pin Definitions IOUTT (Pins 37, 36) Differential current outputs. Output compliance IOUTF range is -0.5V to +1.25V. Clock T (Pins 42, 41) Differential clock inputs. Bypass CLOCKF with Clock F a 0.1 µF capacitor to CGND if using single-ended clock on CLOCKT. Both inputs have internal self-bias at approximately 1.5V. D0 - D13 (Pins 6 - 19) Digital data inputs. CMOS (+3.3V and +5V) and TTL (with +3.3V DVDD) compatible. D13 is the MSB. DS (Pin 20) Data scramble input. If not used, either connect to ground or leave unconnected. AGND (Pins 22 - 27, 32, 35, 38) Analog ground. DGND (Pins 1 - 3, 46 - 48) Digital ground. CGND (Pin 40) Clock ground. Connect to AGND. AVDD (Pins 33, 34) +5V power supply for the analog section. Bypass to analog ground with a 0.1 µF capacitor. DVDD (Pins 4, 5, 44, 45) +5V or +3.3V power supply for the digital section. Bypass to digital ground with a 0.1 µF capacitor. CVDD (Pin 43) Internal clock buffer power supply. Bypass to clock ground with 0.1 µF capacitor. REFIO (Pin 29) Internal voltage reference output (Vref) or voltage reference input. Nominally +1.235V. Can be overdriven with an external reference. Bypass to AGND with 0.1 µF capacitor. REFLO (Pin 28) Ground for reference circuitry. Should be connected to AGND. FSADJ (Pin 30) Full scale current adjust. Must be connected with an external resistor (Rset) or an external current source (Iref) to analog ground. Ifullscale (mA) = 42.67 x Iref = 42.67 x REFIO/Rset REFCOMP (Pin 31) Compensation pin for the internal reference circuitry. Bypass to analog ground with a 0.1 µF capacitor. NC (Pins 21, 39) No connect. 1 DGND 48 DGND 2 DGND 47 DGND 3 DGND 46 DGND 4 DVDD 45 DVDD 5 DVDD 44 DVDD 6 D13 43 CVDD 7 D12 42 Clock T 8 D11 41 Clock F 9 D10 40 CGND 10 D9 39 NC 11 D8 38 AGND 12 D7 37 IOUTT 13 D6 36 IOUTF 14 D5 35 AGND 15 D4 34 AVDD 16 D3 33 AVDD 17 D2 32 AGND 18 D1 31 REFCOMP 19 D0 30 FSADJ 20 DS 29 REFIO 21 NC 28 REFLO 22 AGND 27 AGND 23 AGND 26 AGND 24 AGND 25 AGND DAC14135 (MSB) (LSB) |
Codice articolo simile - DAC14135 |
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