ADM3311 AD [Analog Devices], ADM3311 Datasheet
ADM3311
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ADM3311 Summary of contents
Page 1
... This feature allows the device to be shut down until a peripheral device begins communication. The active receiver can alert the processor, which can then take the ADM3311E out of the shutdown mode. The ADM3311E is fabricated using CMOS technology for minimal power consumption ...
Page 2
... ADM3311E–SPECIFICATIONS Parameter Operating Voltage Range V Power Supply Current CC Shutdown Supply Current Input Pull-Up Current Input Leakage Current, SD, EN Input Logic Threshold Low, V INL Input Logic Threshold High, V INH CMOS Output Voltage Low CMOS Output Voltage High CMOS Output Leakage Current Charge Pump Output Voltage, V+ Charge Pump Output Voltage, V– ...
Page 3
... Normal Enabled Operation 0 1 Receivers Enabled Disabled 1 0 Shutdown Disabled 1 1 Shutdown Disabled Temperature Model Range ADM3311EARS-Reel 2.5 –40°C to +85°C ADM3311EARU-Reel 2.5 –40°C to +85°C PIN FUNCTION DESCRIPTIONS R 1– OUT OUT Enabled Enabled Disabled Disabled Disabled Enabled Disabled ...
Page 4
... ADM3311E –Typical Performance Characteristics 55022 CLASS B CONDUCTED QUASI-PEAK 100k 1M FREQUENCY – 55022 CLASS B RADIATED EMISSIONS dB V/m (EUT at 3m 100 120 FREQUENCY – MHz –1 –2 –3 – ...
Page 5
... Tek Stop 500kS Ch1 5.00V 2000 2500 Ω Tek Stop 500kS Ch1 5.00V 2500 ∞ ADM3311E 50 100 150 200 250 300 OSCILLATOR FREQUENCY – kHz 429 Acqs [ ] O/P HIGH T Ch2 5.00V M 100 s Ch1 0V ...
Page 6
... V using C5 as the storage element. However, it should be noted that, unlike other charge-pump dc- dc converters, the charge pump on the ADM3311E does not run open-loop. The output voltage is regulated to ± 7. the Green Idle circuit (as described later) and will never reach ...
Page 7
... Any radiated and conducted emissions will also vary accordingly. Like other Analog Devices RS-232 trans- ceiver products, the ADM3311E features slew rate limiting and other techniques to minimize radiated and conducted emissions. The device is characterized for EMC under all load conditions, and is well within the requirements of EN55022/CISPR22 ...
Page 8
... V/µs in order to minimize CC EMI interference. LAYOUT AND SUPPLY DECOUPLING Because of the high frequencies at which the ADM3311E oscil- lator operates, particular care should be taken with printed circuit board layout, with all traces being as short as possible and being connected as close to the device as possible. ...
Page 9
... TO 1ns The ADM3311E is tested using both of the above-mentioned test methods. All pins are tested with respect to all other pins as per the MIL-STD-883B specification. In addition, all I-O pins are tested as per the IEC test specification. The products were tested under the following conditions: (a) Power-On— ...
Page 10
... Degradation or loss of function that is not recoverable due to damage. The ADM3311E easily meets Classification 1 at the most strin- gent (Level 3) requirement. In fact, field strengths V/m showed no performance degradation and error-free data trans- mission continued even during irradiation. ...
Page 11
... It is therefore important that the switches in the charge pump guarantee break-before-make switching under all condi- tions so that instantaneous short circuit conditions do not occur. The ADM3311E has been designed to minimize the switching transients and ensure break-before-make switching thereby minimizing conducted emissions. This has resulted in the level of emissions being well below the limits required by the specifi- cation ...
Page 12
... The ADM3311E was operated at maximum baud rates and configured typical RS-232 interface. Testing for radiated emissions was carried out in a shielded anechoic chamber ...