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ADM1181AARWZ-REEL Fiches technique(PDF) 5 Page - Analog Devices |
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ADM1181AARWZ-REEL Fiches technique(HTML) 5 Page - Analog Devices |
5 / 16 page ADM202E/ADM1181A Rev. C | Page 5 of 16 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 14 13 12 11 16 15 10 9 8 1 2 3 4 7 6 5 TOP VIEW (Not to Scale) C1+ R1IN T1OUT GND VCC V+ C1– C2+ T2IN T1IN R1OUT C2– V– T2OUT R2IN R2OUT ADM202E ADM1181A Figure 3. Pin Configuration Table 3. Pin Function Descriptions Pin No. Mnemonic Description 16 VCC Power Supply Input: 5 V ± 10%. 2 V+ Internally Generated Positive Supply (+9 V nominal). 6 V− Internally Generated Negative Supply (−9 V nominal). 15 GND Ground Pin. Must be connected to 0 V. 1, 3 C1+, C1− External Capacitor 1 is connected between these pins. A 0.1 µF capacitor is recommended, but larger capacitors of up to 47 µF can be used. 4, 5 C2+, C2− External Capacitor 2 is connected between these pins. A 0.1 µF capacitor is recommended, but larger capacitors of up to 47 µF can be used. 10, 11 TIN Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. 7, 14 TOUT Transmitter (Driver) Outputs. These are RS-232 signal levels (typically ±9 V). 8, 13 RIN Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected on each input. 9, 12 ROUT Receiver Outputs. These are CMOS output logic levels. *INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT C1+ C1– C2+ C2– VCC 10V 10V V+ V– +5V TO +10V VOLTAGE DOUBLER 5V INPUT C3 6.3V +10V TO –10V VOLTAGE INVERTER C4 10V T1OUT T1IN C5 T2OUT T2IN ADM202E R1OUT R2OUT R1IN R2IN CMOS INPUTS CMOS OUTPUTS EIA/TIA-232 OUTPUTS EIA/TIA-232 INPUTS * GND T1 T2 R1 R2 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF 13 1 3 4 5 11 10 12 9 15 8 7 14 6 2 16 Figure 4. ADM202E Typical Operating Circuit *INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT C1+ C1– C2+ C2– VCC 0.1 µF 10V 10V V+ V– +5V TO +10V VOLTAGE DOUBLER 5V INPUT C3 10V +10V TO –10V VOLTAGE INVERTER C4 0.1 µF 10V T1OUT T1IN C5 0.1 µF 10V T2OUT T2IN ADM1181A R1OUT R2OUT R1IN R2IN CMOS INPUTS CMOS OUTPUTS EIA/TIA-232 OUTPUTS EIA/TIA-232 INPUTS * GND T1 T2 R1 R2 0.1 µF 0.1 µF 13 1 3 4 5 11 10 12 9 15 8 7 14 6 2 16 Figure 5. ADM1181A Typical Operating Circuit |
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