ADM202EARWZ Analog Devices Inc, ADM202EARWZ Datasheet - Page 13
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ADM202EARWZ
Manufacturer Part Number
ADM202EARWZ
Description
IC TX/RX RS-232 5V 15KV 16SOIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet
1.ADM202EARNZ-REEL7.pdf
(16 pages)
Specifications of ADM202EARWZ
Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Device Type
Transceiver
Ic Interface Type
RS232
No. Of Drivers
2
Supply Voltage Range
4.5V To 5.5V
Driver Case Style
SOIC
No. Of Pins
16
Operating Temperature Range
-40°C To +85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADM202EARWZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
ADM202EARWZ-REEL7
Manufacturer:
CHRONTEL
Quantity:
1 578
Part Number:
ADM202EARWZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
RADIATED EMISSIONS
Radiated emissions are measured at frequencies in excess of
30 MHz. RS-232 outputs are designed for operation at high
baud rates, while driving cables can radiate high frequency EM
energy. The previously described causes of conducted emissions
can also cause radiated emissions. Fast RS-232 output transitions
can radiate interference, especially when lightly loaded and
driving unshielded cables. Charge-pump devices are also prone
to radiating noise due to the high frequency oscillator and the
high voltages being switched by the charge pump. The move
toward smaller capacitors to conserve board space has resulted
in higher frequency oscillators in the charge-pump design,
causing higher levels of conducted and radiated emissions.
The RS-232 outputs on the ADM202E feature a controlled slew
rate to minimize the level of radiated emissions, yet they are fast
enough to support data rates of up to 230 kBaud.
Figure 27 shows radiated emissions vs. frequency. The levels of
emissions are well within specifications without the need for
additional shielding or filtering components. The ADM202E
80
70
60
50
40
30
20
10
0
0.3
Figure 25. ADM202E Conducted Emissions
0.6
LOG FREQUENCY (MHz)
1
3
6
10
30
LIMIT
Rev. C | Page 13 of 16
was operated at maximum baud rates and configured like a
typical RS-232 interface. Testing for radiated emissions was
carried out in a shielded anechoic chamber.
80
70
60
50
40
30
20
10
0
START 30.0MHz
Figure 27. ADM202E Radiated Emissions vs. Frequency
DUT
RADIATED NOISE
TURNTABLE
Figure 26. Radiated Emissions Test Setup
ADJUSTABLE
ANTENNA
ADM202E/ADM1181A
STOP 200.0MHz
TO
RECEIVER
LIMIT