ADM202/ADM203
PIN CONFIGURATIONS
DIP/SOIC
0.1µF
6.3V
1 C1+
3 C1–
4 C2+
5 C2–
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
+5V INPUT
0.1µF
6.3V
V
CC
16
V+ 2
0.1µF
6.3V
C1+
V+
C1–
C2+
C2–
V–
T2
OUT
R2
IN
1
2
3
4
5
6
7
8
16 V
CC
15
14
GND
T1
OUT
R1
IN
TTL/CMOS
INPUTS
*
T1
IN
T2
IN
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
0.1µF
16V
V–
6
0.1µF
16V
ADM202
Top View
(Not to Scale)
13
11
10
T1
14
12 R1
OUT
11
10
9
T1
IN
T2
IN
R2
OUT
T1
OUT
T2
OUT
R1
IN
R2
IN
RS-232
OUTPUTS
T2
7
12
R1
13
RS-232
INPUTS
**
9
GND
15
R2
8
DIP
ADM202
+5V INPUT
T2
IN
T1
IN
R1
OUT
R1
IN
T1
OUT
GND
V
CC
C1+
GND
C2–
1
2
3
4
5
6
7
8
9
10
20
19
18
17
R2
OUT
R2
IN
T2
OUT
V–
C2–
C2+
V+
C1–
V–
C2+
7
V
CC
TTL/CMOS
INPUTS
*
T1
IN
T2
IN
2
T1
5
T1
OUT
T2
OUT
R1
IN
R2
IN
RS-232
OUTPUTS
ADM203
Top View
(Not to Scale)
1
T2
18
16
15
14
13
12
11
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
DO NOT MAKE
CONNECTIONS TO
THESE PINS
INTERNAL
–10V POWER
SUPPLY
INTERNAL
+10V POWER
SUPPLY
3
20
8
C1+
R1
4
RS-232
INPUTS
**
R2
19
C2+ 11
13 C1–
12 V–
17 V–
14 V+
C2+ 15
ADM203
GND
6
GND
9
C2– 10
C2– 16
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 1. Typical Operating Circuits
PIN FUNCTION DESCRIPTION
Mnemonic
Function
V
CC
V+
V–
GND
C1+
C1–
C2+
C2–
T
IN
T
OUT
REV. 0
Power Supply Input 5 V
±
10%.
Internally Generated Positive Supply (+10 V nominal).
Internally Generated Negative Supply (–10 V nominal).
Ground Pin. Must be connected to 0 V.
ADM202 External Capacitor, (+ terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
ADM202 External Capacitor, (– terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
ADM202 External Capacitor, (+ terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
ADM202 External Capacitor, (– terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to V
CC
is
connected on each input.
Transmitter (Driver) Outputs. These are RS-232 levels (typically
±
10 V).
–3–
AD [ ANALOG DEVICES ]
