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AD7306AR датащи(PDF) 8 Page - Analog Devices |
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AD7306AR датащи(HTML) 8 Page - Analog Devices |
8 / 8 page AD7306 –8– REV. B OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Single-Ended Data Transmission Single-ended interfaces are used for low speed, short distance communications such as from a computer terminal to a printer. A single line is used to carry the signal. Various standards have been developed to standardize the communication link, the most popular of these being the RS-232. The RS-232 standard was introduced in 1962 by the EIA and has been widely used throughout the industry. The standard has been revised several times, and the current revision is known as EIA-232E. The RS-232 standard is suitable for single-ended data transmission at relatively slow data rates over short distances. A typical RS-232 interface is shown in Figure 14. RS-232 CHANNEL DATA IN DATA OUT RX TX Figure 14. Single-Ended RS-232 Interface Differential Data Transmission When transmitting at high data rates, over long distances and through noisy environments, single-ended data transmission is often inadequate. In this type of application, differential data transmission offers superior performance. Differential transmis- sion uses two signal lines to transmit data. It rejects ground shifts and is insensitive to noise signals which appear as com- mon mode voltages on the transmission lines. To accommodate faster data communication, the differential RS-422 standard was developed. Therefore, it can be used to reliably transmit data at higher speeds and over longer distances than single-ended trans- mission. A typical RS-422 interface is shown in Figure 15. RS-422 CHANNEL DATA IN DATA OUT RX TX Figure 15. Differential RS-422 Interface Table I. Comparison of RS-232 and RS-422 Interface Standards Specification EIA-232E RS-422 Transmission Type Single-Ended Differential Maximum Data Rate 20 kB/s 10 MB/s Maximum Cable Length Load Dependent 4000 ft. Minimum Driver Output Voltage ±5 V ±1.5 V Slew Rate 30 V/ µs max Receiver Input Resistance 3 k Ω to 7 kΩ 4 k Ω min Receiver Input Sensitivity ±3 V ±200 mV Receiver Input Voltage Range ±15 V ±7 V No. of Drivers per Line 1 1 No. of Receivers per Line 1 10 24-Lead SOIC (R-24) 24 13 12 1 0.6141 (15.60) 0.5985 (15.20) PIN 1 SEATING PLANE 0.0118 (0.30) 0.0040 (0.10) 0.0192 (0.49) 0.0138 (0.35) 0.1043 (2.65) 0.0926 (2.35) 0.0500 (1.27) BSC 0.0125 (0.32) 0.0091 (0.23) 0.0500 (1.27) 0.0157 (0.40) 8 ° 0 ° 0.0291 (0.74) 0.0098 (0.25) x 45 ° 24-Lead Pin Plastic DIP (N-24) 0.260 ± 0.001 (6.61 ± 0.03) 0 ° - 15° 0.11 (2.79) 0.09 (2.28) SEATING PLANE 1.228 (31.19) 1.226 (31.14) 0.02 (0.5) 0.016 (0.41) 0.07(1.78) 0.05 (1.27) 0.130 (3.30) 0.128 (3.25) 0.32 (8.128) 0.30 (7.62) 0.011 (0.28) 0.009 (0.23) NOTES 1. 2. LEAD NO. 1 IDENTIFIED BY DOT OR NOTCH. PLASTIC LEADS WILL BE EITHER SOLDER DIPPED OR TIN LEAD PLATED IN ACCORDANCE WITH MIL-M-385 10 REQUIREMENTS. |
Аналогичный номер детали - AD7306AR |
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Аналогичное описание - AD7306AR |
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