ADM3202ARN-REEL7 Analog Devices Inc, ADM3202ARN-REEL7 Datasheet - Page 8
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ADM3202ARN-REEL7
Manufacturer Part Number
ADM3202ARN-REEL7
Description
IC,LINE TRANSCEIVER,2 DRIVER,2 RCVR,SOP,16PIN,PLASTIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet
1.ADM3202ARUZ.pdf
(12 pages)
Specifications of ADM3202ARN-REEL7
Rohs Status
RoHS non-compliant
Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Data Rate
460Kbps
Interface Circuit Standard 1
EIA/TIA-232-E/RS-232
Number Of Receivers
2
Number Of Transmitters
2
Number Of Transceivers
1
Data Transmission Topology
Point-to-Point
Receiver Signal Type
Single-Ended
Transmitter Signal Type
Single-Ended
Single Supply Voltage (typ)
3.3V
Single Supply Voltage (min)
3V
Single Supply Voltage (max)
5.5V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Supply Current
12mA
Power Supply Requirement
Single
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
16
Package Type
SOIC N
Lead Free Status / Rohs Status
Not Compliant
Other names
ADM3202ARN-REEL7
ADM3202ARNREEL7TR
ADM3202ARNREEL7TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADM3202ARN-REEL7
Manufacturer:
ALCOR
Quantity:
40
ADM3202/ADM3222/ADM1385
GENERAL DESCRIPTION
The ADM3202/ADM3222/ADM1385 are RS-232 line drivers/
receivers. Step-up voltage converters coupled with level-shifting
transmitters and receivers allow RS-232 levels to be developed
while operating from a single 3.3 V supply.
CMOS technology is used to keep the power dissipation to an
absolute minimum, allowing maximum battery life in portable
applications.
The ADM3202/ADM3222/ADM1385 are modifications,
enhancements, and improvements of the AD230 to AD241
family and derivatives. They are essentially plug-in compatible
and do not have any materially different applications.
CIRCUIT DESCRIPTION
The internal circuitry consists of these main sections:
•
•
•
Charge Pump DC to DC Voltage Converter
The charge pump voltage converter consists of a 200 kHz
oscillator and a switching matrix. The converter generates a
stages by using a switched capacitor technique as illustrated in
Figure 18 and Figure 19. First, the 3.3 V input supply is doubled
to 6.6 V by using Capacitor C1 as the charge storage element.
The +6.6 V level is then inverted to generate −6.6 V using C2
as the storage element. C3 is shown connected between V+ and
V
Capacitors C3 and C4 are used to reduce the output ripple.
Their values are not critical and can be increased, if desired.
Capacitor C3 is shown connected between V+ and V
also acceptable to connect this capacitor between V+ and GND.
If desired, larger capacitors (up to 10 μF) can be used for
Capacitors C1 to C4.
±6.6 V supply from the input 3.3 V level. This is done in two
CC
OUTPUTS
INPUTS
but is equally effective if connected between V+ and GND.
A charge pump voltage converter
3.3 V logic to EIA-232 transmitters
EIA-232 to 5 V logic receivers
CMOS
CMOS
0.1µF
0.1µF
R1
R2
10V
10V
Figure 15. ADM3202 Typical Operating Circuit
T1
T2
OUT
OUT
IN
IN
+
+
GND
C1+
C1–
C2+
C2–
T1
+3.3V TO +6.6V
+6.6V TO –6.6V
ADM3202
INVERTER
DOUBLER
VOLTAGE
VOLTAGE
T2
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
R1
R2
V
V+
CC
V–
+3.3V INPUT
+
+
T1
T2
R1
R2
C3
0.1µF
6.3V
C4
0.1µF
10V
OUT
OUT
IN
IN
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*
+
CC
C5
0.1µF
. It is
Rev. D | Page 8 of 12
OUTPUTS
OUTPUTS
DOUBLER
VOLTAGE
INPUTS
INPUTS
CMOS
CMOS
CMOS
CMOS
FROM
OSCILLATOR
GND
V
INTERNAL
0.1µF
0.1µF
CC
OSCILLATOR
R1
R2
0.1µF
0.1µF
GND
INTERNAL
R1
R2
10V
10V
10V
10V
T1
T2
V
OUT
OUT
Figure 16. ADM3222 Typical Operating Circuit
Figure 17. ADM1385 Typical Operating Circuit
T1
T2
OUT
OUT
+
IN
IN
+
+
IN
IN
Figure 18. Charge Pump Voltage Doubler
Figure 19. Charge Pump Voltage Inverter
DD
+
+
EN
S2
S1
GND
C1+
C1–
C2+
C2–
GND
C1+
C1–
C2+
C2–
S2
S1
T1
T1
+3.3V TO +6.6V
+6.6V TO –6.6V
+3.3V TO +6.6V
+6.6V TO –6.6V
INVERTER
C1
DOUBLER
T2
VOLTAGE
VOLTAGE
INVERTER
DOUBLER
T2
VOLTAGE
VOLTAGE
C2
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ADM1385
ON EACH RS-232 INPUT
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ADM3222
ON EACH RS-232 INPUT
+
R1
+
R1
S4
S3
R2
S4
S3
R2
V
V
V+
V–
CC
V+
V–
CC
+3.3V INPUT
C3
+3.3V INPUT
C4
SD
SD
+
+
C4
0.1µF
10V
T1
T2
R1
R2
+
+
T1
T2
R1
R2
+
C3
0.1µF
6.3V
C4
0.1µF
10V
OUT
OUT
IN
IN
OUT
OUT
IN
IN
+
V+ = 2V
V
C3
0.1µF
6.3V
CC
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*
GND
V– = –(V+)
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*
+
C5
0.1µF
CC
+
C5
0.1µF