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FMS3110 Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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FMS3110 Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 11 page DATA SHEET FMS3110/3115 Rev. 1.07 12/8/04 5 Voltage Reference VREF 35 +1.235 V Voltage Reference Output/Input. An internal voltage source of +1.235 Volts is output on this pin. An external +1.235 Volt reference may be applied here which overrides the internal reference. Decoupling VREF to GND with a 0.1µF ceramic capacitor is required. RREF 36 560 Ω Current-Setting Resistor. Full-scale output current of each D/A converter is determined by the value of the resistor connected between RREF and GND. Nominal value of RREF is found from: RREF = 9.1 (VREF/IFS) where IFS is the full-scale (white) output current (in amps) from the D/A converter (without sync). Sync is 0.4 * IFS. D/A full-scale (white) current may also be calculated from: IFS = VFS/RL Where VFS is the white voltage level and RL is the total resistive load (in ohms) on each D/A converter. VFS is the blank to full-scale voltage. COMP 34 0.1 µF Compensation Capacitor. A 0.1 µF ceramic capacitor must be connected between COMP and VDD to stabilize internal bias circuitry. Power and Ground VDD 12, 30, 31 +5 V Power Supply. GND 27, 28 0.0V Ground. Pin Descriptions (continued) Pin Name Pin Number Value Description Equivalent Circuits Figure 2. Equivalent Digital Input Circuit Figure 3. Equivalent Analog Output Circuit Digital Input VDD p n GND VDD VDD np GND OUT |
Similar Part No. - FMS3110_04 |
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Similar Description - FMS3110_04 |
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