ADM213AR-REEL [ADI]
0.1 muF, 5 V Powered CMOS RS-232 Drivers/Receivers; 0.1 MUF , 5 V供电的CMOS RS - 232驱动器/接收器型号: | ADM213AR-REEL |
厂家: | ADI |
描述: | 0.1 muF, 5 V Powered CMOS RS-232 Drivers/Receivers |
文件: | 总16页 (文件大小:218K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
0.1 µF, 5 V Powered CMOS
RS-232 Drivers/Receivers
ADM206–ADM211/ADM213
FEATURES
TYPICAL OPERATING CIRCUIT
0.1 µF to 10 µF capacitors
120 kB/s data rate
Two receivers active in shutdown (ADM213)
On-board dc-to-dc converters
9 ꢀ output swing with 5 ꢀ supply
Low power (15 mW)
5V INPUT
12
14
V
CC
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
11
13
+
+
+
0.1
16V
µF
0.1µF
6.3V
0.1µF
+
+
V+
V–
+10VTO –10V
VOLTAGE
INVERTER
15 C2+
17
0.1µF
16V
0.1
16V
µF
16
C2–
Low power shutdown ≤ 5 µW
30 ꢀ receiver input levels
Latch-up free
T1
T1
T2
T3
T4
R1
R2
R3
R4
R5
2
3
T1
7
6
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
T2
T3
T4
T2
T3
T4
R1
R2
R3
R4
R5
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
Plug-in upgrade for MAX205-211/213
20
21
8
1
28
9
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
R1
R2
R3
R4
R5
OUT
OUT
4
5
IN
IN
IN
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
27
23
26
22
19
24
OUT
OUT
OUT
EN
2
18
25
SD
ADM211
GND
10
NOTES
1
INTERNAL 400k
Ω PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
GENERAL DESCRIPTION
2
INTERNAL 5k
Ω
PULL-DOWN RESIST OR ON EACH RS-232 INPUT.
The ADM2xx family of line drivers/receivers is intended for all
EIA-232-E and V.28 communications interfaces, especially in
applications where ±±2 V is not available. The ADM206,
ADM2±±, and ADM2±3 feature a low power shutdown mode
that reduces power dissipation to less than 5 µW, making them
ideally suited for battery-powered equipment. The ADM2±3
has an active low shutdown and an active high receiver-enable
control. Two receivers of the ADM2±3 remain active during
shutdown. This feature is useful for ring indicator monitoring.
Figure 1.
All members of the ADM2xx family, except the ADM209,
include two internal charge pump voltage converters that allow
operation from a single 5 V supply. These parts convert the 5 V
input power to the ±±0 V required for ꢀR-232 output levels.
The ADM209 is designed to operate from 5 V and ±2 V supplies.
An internal +±2 V to –±2 V charge pump voltage converter
generates the –±2 V supply.
Table 1. Selection Table
TTL Three-
Part
Power Supply Number of RS-
Number of
RS-232 Receivers
External
Capacitors
Low Power
Shutdown (SD)
Number of Receivers
Active in Shutdown
EN
State
Yes
No
Number
ꢀoltage
232 Drivers
ADM206
ADM207
ADM208
ADM209
5 V
4
5
4
3
3
3
4
5
4
4
4
2
Yes
No
No
No
0
0
0
0
5 V
5 V
No
5 V and 9 V to
13.2 V
Yes
ADM211
ADM213
5 V
5 V
4
4
5
5
4
4
Yes
Yes
0
2
SD
Yes (EN)
Yes (
)
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
www.analog.com
© 2005 Analog Devices, Inc. All rights reserved.
ADM206–ADM211/ADM213
TABLE OF CONTENTS
Rpecifications .................................................................................... 3
General Information...................................................................... ±±
Circuit Description .................................................................... ±±
Application Hints....................................................................... ±2
Outline Dimensions....................................................................... ±3
Ordering Guide .......................................................................... ±5
Absolute Maximum ꢀatings ........................................................... 4
ERD Caution.................................................................................. 4
Pin Configurations and Functional Descriptions........................ 5
Typical Performance Characteristics............................................. 9
REꢀISION HISTORY
1/05—Data Sheet Changed from Rev. B to Rev. C
Changes to Rpecifications...............................................................3
Change to ꢀeceivers section.........................................................±±
Change to Driving Long Cables section.....................................±2
Updated Outline Dimensions......................................................±3
Changes to Ordering Guide.........................................................±5
6/02—Data Sheet Changed from Rev. A to Rev. B
ꢀemoved all references to ADM205..............................Universal
3/02—Data Sheet Changed from Rev. 0 to Rev. A
Changes to numbers in Min/Typ/Max column of
Rpecifications page ..........................................................................2
Updated Figures...........................................................................8, 9
Revision 0: Initial Version
Rev. C | Page 2 of 16
ADM206–ADM211/ADM213
SPECIFICATIONS
VCC = 5 V ± ±0% (ADM206, ADM207, ADM208, ADM209, ADM2±±, ADM2±3); V+ = 9 V to ±3.2 V (ADM209); C±–C4 = 0.± µF ceramic.
All specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Min Typ Max Unit Test Conditions/Comments
Output Voltage Swing
VCC Power Supply Current
5
9
V
All transmitter outputs loaded with 3 kΩ to ground
No load
No load, ADM209
5
13
1
5
10
0.8
mA
mA
mA
µA
V
0.4
3.5
1
V+ Power Supply Current
No load, V+ = 12 V, ADM209 only
Shutdown Supply Current
Input Logic Threshold Low, VINL
Input Logic Threshold High, VINH
Logic Pull-Up Current
RS-232 Input Voltage Range1
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
TIN, EN, SD, EN, SD
TIN, EN, SD, EN, SD
TIN = 0 V
2.0
V
10
25
+30
µA
V
V
V
V
kΩ
V
V
–30
0.8
1.25
1.9
0.65
5
2.4
RS-232 Input Resistance
3
7
0.4
TA = 0°C to 85°C
IOUT = 1.6 mA
IOUT = –1.0 mA
EN = VCC, EN = 0 V, 0 V ≤ ROUT ≤ VCC
ADM206, ADM209, ADM211 (Figure 24. CL = 150 pF)
ADM206, ADM209, ADM211 (Figure 24. RL = 1 kΩ)
RS-232 to TTL
TTL/CMOS Output Voltage Low, VOL
TTL/CMOS Output Voltage High, VOH
TTL/CMOS Output Leakage Current
Output Enable Time (TEN)
3.5
0.05
115
165
0.5
8
10
5
µA
ns
ns
µs
Output Disable Time (TDIS
)
Propagation Delay
Transition Region Slew Rate
Output Resistance
V/µs RL = 3 kΩ, CL = 2500 pF; measured from +3 V to –3 V or –3 V to +3 V
Ω
300
VCC = V+ = V– = 0 V, VOUT
=
2 V
RS-232 Output Short Circuit Current
12
60
mA
1 Guaranteed by design.
Rev. C | Page 3 of 16
ADM206–ADM211/ADM213
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Rtresses above those listed under Absolute Maximum ꢀatings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of
time may affect device reliability.
Parameter
Min
VCC
V+
V–
–0.3 V to +6 V
(VCC – 0.3 V) to +14 V
+0.3 V to –14 V
Input Voltages
TIN
RIN
–0.3 V to (VCC + 0.3 V)
30 V
Output Voltages
TOUT
ROUT
(V+, +0.3 V) to (V–, –0.3 V)
–0.3 V to (VCC + 0.3 V)
Short-Circuit Duration
TOUT
Continuous
Power Dissipation
N-24 PDIP (Derate 13.5 mW/°C
above 70°C)
R-24 SOIC (Derate 12 mW/°C
above 70°C)
R-28 SOIC (Derate 12.5 mW/°C
above 70°C)
RS-24 SSOP (Derate 12 mW/°C
above 70°C)
1000 mW
850 mW
900 mW
850 mW
900 mW
RS-28 SSOP (Derate 10 mW/°C
above 70°C)
Thermal Impedance, θJA
N-24 PDIP
R-24 SOIC
R-28 SOIC
RS-24 SSOP
120°C/W
85°C/W
80°C/W
115°C/W
100°C/W
RS-28 SSOP
Operating Temperature Range
Industrial (A Version)
Storage Temperature Range
Lead Temperature, Soldering
Vapor Phase (60 s)
Infrared (15 s)
–40°C to +85°C
–65°C to +150°C
300°C
215°C
220°
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. C | Page 4 of 16
ADM206–ADM211/ADM213
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
1
2
24
23
22
21
20
19
18
17
16
15
14
13
T3
T1
T2
T4
1
2
24
23
22
21
20
19
18
17
T3
T1
T2
T4
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
R2
R2
R2
R2
T5
IN
IN
3
3
OUT
OUT
4
4
R1
SD
R1
IN
IN
IN
5
5
R1
EN
T4
R1
T5
T4
T3
OUT
OUT
OUT
ADM206
TOP VIEW
(Not to Scale)
ADM207
TOP VIEW
(Not to Scale)
6
T2
T1
6
T2
T1
IN
IN
IN
IN
IN
IN
7
7
T3
IN
IN
8
GND
R3
R3
V–
8
GND
R3
OUT
IN
OUT
IN
9
V
V
9
16 R3
CC
CC
10
11
12
C1+
V+
10
11
12
15
14
13
C1+
V–
C2–
C2+
V+
C2–
C2+
C1–
C1–
Figure 2. ADM206 PDIP/SOIC/SSOP Pin Configuration
Figure 4. ADM207 PDIP/SOIC/SSOP Pin Configuration
5V INPUT
5V INPUT
10
12
V
CC
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
9
+
+
+
V
+5VTO +10V
VOLTAGE
DOUBLER
9
0.1µF
10
12
C1+
C1–
0.1µF
+
+
CC
+
0.1µF
+
+
0.1µF
6.3V
0.1µF
0.1µF
6.3V
11
6.3V
V+
V–
+
+
6.3V
V+ 11
+10VTO –10V
VOLTAGE
INVERTER
13 C2+
15
0.1µF
16V
+10VTO –10V
VOLTAGE
INVERTER
13
0.1µF
16V
C2+
V–
15
0.1µF
16V
0.1µF
16V
14
C2–
14 C2–
T1
IN
T1
T2
T3
T4
T5
R1
R2
2
3
T1
7
6
OUT
T1
IN
T1
T2
T3
T4
R1
R2
R3
T1
7
6
2
3
1
OUT
T2
IN
T2
OUT
T2
IN
T2
OUT
TTL/CMOS
INPUTS
RS-232
OUTPUTS
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
T3
IN
T3
1
18
19
5
OUT
1
T3
IN
T3
18
OUT
T4
IN
T4
24
20
4
OUT
T4
IN
T4
24
4
19
5
OUT
T5
IN
T5
OUT
R1
R1
IN
OUT
R1
R1
IN
22
17
20
OUT
OUT
OUT
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R2
22
R2
IN
23
16
OUT
2
TTL/CMOS
OUTPUTS
R2
R3
RS-232
INPUTS
R2
IN
23
16
2
R3
17
20
R3
IN
OUT
EN
R3
R3
IN
21
SD
ADM206
GND
8
GND
ADM207
8
NOTES
1
NOTES
1
INTERNAL 400k
Ω
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
INTERNAL 400k
Ω
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
2
INTERNAL 5k
INTERNAL 5k
Ω
PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 3. ADM206 Typical Operating Circuit
Figure 5. ADM207 Typical Operating Circuit
Rev. C | Page 5 of 16
ADM206–ADM211/ADM213
1
2
24
23
22
21
20
19
18
17
1
2
24
23
22
21
20
19
18
17
T2
T1
T3
OUT
R1
T1
T2
OUT
OUT
IN
IN
R3
R3
R1
OUT
IN
IN
3
3
R2
GND
R2
R2
IN
OUT
IN
OUT
IN
4
4
R2
T4
T4
T3
T2
V
CC
OUT
5
5
T1
V+
C+
C–
V–
T2
T1
IN
OUT
IN
OUT
OUT
ADM208
TOP VIEW
(Not to Scale)
ADM209
TOP VIEW
(Not to Scale)
6
6
R1
OUT
7
7
R1
R3
R3
IN
IN
IN
8
8
GND
R4
OUT
IN
OUT
IN
V
9
16 R4
R5
9
16 T3
CC
IN
OUT
OUT
10
11
12
15
14
13
10
11
12
15
14
13
C1+
V–
R5
R4
NC
EN
T3
V+
C2–
C2+
C1–
R4
IN
OUT
Figure 6. ADM208 PDIP/SOIC/SSOP Pin Configuration
Figure 8. ADM209 PDIP/SOIC/SSOP Pin Configuration
5V INPUT
5V INPUT
0.1
µF
+
V
9
10
12
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
+
+
CC
+
V
4
5
CC
0.1
6.3V
µF
0.1µF
0.1µF
6
7
C1+
C1–
+12VTO –12V
VOLTAGE
INVERTER
+
+
+
11
6.3V
9V TO 13.2V
INPUT
V+
V–
0.1
16V
µF
V+
V–
+
+10VTO –10V
VOLTAGE
INVERTER
13 C2+
14 C2–
8
15
0.1µF
16V
0.1
16V
µF
0.1
16V
µF
T1
24
23
16
1
T1
T2
T3
R1
R2
R3
R4
R5
19
20
13
2
T1
T2
T3
R1
R2
R3
R4
R5
IN
IN
IN
OUT
OUT
OUT
IN
T1
2
T1
T2
T3
T4
R1
R2
R3
R4
T1
5
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T2
T3
1
T2
T3
T4
1
T2
T3
T4
R1
R2
R3
R4
18
19
21
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
24
20
R1
R2
R3
R4
R5
OUT
OUT
OUT
OUT
21
18
22
17
11
10
14
IN
IN
IN
IN
R1
R2
R3
R4
OUT
OUT
OUT
OUT
7
3
6
4
TTL/CMOS
OUTPUTS
RS-232
INPUTS
2
IN
IN
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
12
9
2
22
17
23
16
OUT
15
NC
EN
ADM209
ADM208
GND
8
GND
3
NOTES
INTERNAL 400k
INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
NOTES
1
1
2
Ω PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
INTERNAL 400k
Ω
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
Ω
INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 7. ADM208 Typical Operating Circuit
Figure 9. ADM209 Typical Operating Circuit
Rev. C | Page 6 of 16
ADM206–ADM211/ADM213
1
2
28
T3
T1
T2
T4
OUT
OUT
27
R3
R3
OUT
IN
1
2
28 T4
T3
T1
T2
OUT
OUT
3
26
OUT
OUT
27
26
25
24
23
R3
OUT
IN
4
25
R2
SD
EN
IN
3
R3
OUT
OUT
5
24
R2
OUT
4
R2
SD
IN
6
23
T2
T1
R4
*
IN
IN
IN
5
R2
EN
R4
OUT
ADM213
TOP VIEW
(Not to Scale)
7
22
R4
T4
*
OUT
6
T2
IN
IN
IN
ADM211
TOP VIEW
(Not to Scale)
R1
8
21
OUT
IN
IN
7
T1
22 R4
21 T4
OUT
R1
9
20 T3
IN
R1
OUT
8
IN
IN
GND
10
11
19 R5
*
OUT
R1
9
T3
20
IN
18
17
16
15
V
R5
V–
*
IN
CC
GND
10
11
19 R5
18 R5
OUT
C1+ 12
13
V
CC
IN
V+
C1– 14
C2–
C2+
C1+ 12
17
16
15
V–
13
V+
C2–
C2+
14
C1–
*ACTIVE IN SHUTDOWN
Figure 10. ADM211 SOIC/SSOP Pin Configuration
Figure 12. ADM213 SOIC/SSOP Pin Configuration
5V INPUT
5V INPUT
12
14
V
11
13
+5VTO +10V
VOLTAGE
DOUBLER
C1+
C1–
+
+
CC
+
V
12
14
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
11
13
+
+
CC
+
0.1
16V
µF
0.1µF
0.1µF
0.1
16V
µF
0.1µF
0.1µF
+
+
6.3V
V+
+
+
6.3V
V+
V–
+10VTO –10V
VO LTAG E
INVERTER
15 C2+
V– 17
+10VTO –10V
VOLTAGE
INVERTER
C2+
0.1µF
16V
15
17
0.1
16V
µF
0.1µF
16V
0.1
16V
µF
16
C2–
16 C2–
T1
7
6
2
3
T1
T2
T3
T4
R1
R2
R3
R4
R5
T1
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
T1
T1
T2
T3
T4
R1
R2
R3
R4
R5
2
3
T1
7
6
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
T2
T3
T4
T2
T3
T4
R1
R2
R3
R4
R5
T2
T3
T4
T2
T3
T4
R1
R2
R3
R4
R5
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
1
28
9
20
21
8
1
28
9
20
21
8
R1
R2
R3
OUT
OUT
R1
R2
R3
R4
R5
OUT
OUT
OUT
OUT
4
5
IN
IN
4
5
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
26
22
19
24
27
23
OUT
3
2
TTL/CMOS
OUTPUTS
RS-232
INPUTS
26
22
19
24
27
23
IN
IN
IN
2
3
R4
OUT
IN
3
3
18
25
R5
OUT
IN
18
25
OUT
EN
SD
ADM213
GND
10
SD
EN
ADM211
GND
10
NOTES
1
NOTES
1
INTERNAL 400k
Ω
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
ACTIVE IN SHUTDOWN.
2
3
INTERNAL 400k
Ω
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
INTERNAL 5k
Ω
2
INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 11. ADM211 Typical Operating Circuit
Figure 13. ADM213 Typical Operating Circuit
Rev. C | Page 7 of 16
ADM206–ADM211/ADM213
Table 4. Pin Function Descriptions
Mnemonic Function
VCC
V+
Power Supply Input. 5 V 10ꢀ.
Internally Generated Positive Supply (10 V nominal) on all parts, except ADM209 . The ADM209 requires an external 9 V to
13.2 V supply.
V–
Internally Generated Negative Supply (–10 V Nominal).
GND
C+
Ground Pin. Must be connected to 0 V.
(ADM209 only) External capacitor (+ terminal) is connected to this pin.
C–
(ADM209 only) External capacitor (– terminal) is connected to this pin.
C1+
C1–
C2+
C2–
TIN
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to VCC is connected to
each input.
TOUT
RIN
Transmitter (Driver) Outputs. These are RS-232 levels (typically 10 V).
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected to each
input.
ROUT
Receiver Outputs. These are TTL/CMOS levels.
EN/EN
Enable Input. Active low on ADM206, ADM209, and ADM211. Active high on ADM213. This input is used to enable/disable the
receiver outputs. With EN = low (EN = high ADM213), the receiver outputs are enabled. With EN = high (EN = low ADM213),
the outputs are placed in a high impedance state. This is useful for connecting to microprocessor systems.
SD/SD
NC
Shutdown Input. Active high on ADM206 and ADM211. Active low on ADM213. With SD = high on the ADM206 and ADM211,
the charge pump is disabled, the receiver outputs are placed in a high impedance state, and the driver outputs are turned off.
With SD = low on the ADM213, the charge pump is disabled, the driver outputs are turned off, and all receivers, except R4
and R5, are placed in a high impedance state. In shutdown, the power consumption reduces to 5 µW.
No Connect. No connections are required to this pin.
Table 5. ADM206 and ADM211 Truth Table
EN
SD
0
0
Status
Transmitters T1–T5
Enabled
Enabled
Receivers R1–R5
Enabled
Disabled
0
1
0
Normal Operation
Normal Operation
Shutdown
1
Disabled
Disabled
Table 6. ADM213 Truth Table
SD
EN
0
1
0
1
Status
Transmitters T1–T4
Disabled
Disabled
Enabled
Enabled
Receivers R1–R3
Disabled
Disabled
Disabled
Enabled
Receivers R4, R5
Disabled
Enabled
Disabled
Enabled
0
0
1
1
Shutdown
Shutdown
Normal Operation
Normal Operation
Rev. C | Page 8 of 16
ADM206–ADM211/ADM213
TYPICAL PERFORMANCE CHARACTERISTICS
15
15
10
10
V+
Tx O/P HIGH
5
0
5
0
–5
–5
V
–
Tx O/P LOW
–
–
10
15
–10
–15
0
5
10
LOAD CURRENT (mA)
15
20
3000
6.0
0
2
4
6
8
10
LOAD CURRENT (mA)
Figure 14. Charge Pump V+, V– vs. Load Current
Figure 17. Transmitter Output Voltage vs. Load Current
350
300
250
200
150
50
45
40
35
30
25
V– IMP
NEGATIVE
SLEW
20
15
10
5
V+ IMP
100
50
POSITIVE
SLEW
0
0
4.5
4.7
4.9
5.1
5.3
5.5
0
500
1000
1500
2000
2500
V
(V)
LOAD CAPACITANCE (pF)
CC
Figure 15. Transmitter Slew Rate vs. Load Capacitance
Figure 18. Charge Pump Impedance vs. VCC
9
7
5
3
Tx O/P HIGH LOADED
1
T
SD
V+
1
0
–1
T
2
3
–3
–5
–7
–9
T
V–
Tx O/P LOW LOADED
3.1V
V+, V– EXITING SHUTDOWN (SD)
CH1 5.00V
CH3 5.00V
CH2 5.00V M50.0µs
CH1
W
4.0
4.5
5.0
(V)
5.5
B
V
CC
Figure 16. Transmitter Output Voltage vs. VCC
Figure 19. Charge Pump, V+, V– Exiting Shutdown
Rev. C | Page 9 of 16
ADM206–ADM211/ADM213
Tx INPUT
T
T
T
Tx INPUT
1
2
1
T
2
Tx OUTPUT
Tx OUTPUT
800mV
5.00V CH2 5.00V M1.00
µs
CH1
5.00V CH2 5.00V M1.00µs CH1
CH1
CH1
800mV
Figure 20. Transmitter Output Loaded Slew Rate
Figure 21. Transmitter Output Unloaded Slew Rate
Rev. C | Page 10 of 16
ADM206–ADM211/ADM213
S1
S2
S3
V+
GND
FROM
VOLTAGE
DOUBLER
GENERAL INFORMATION
+
+
C2
C4
S4
The ADM206–ADM2±±/ADM2±3 family of ꢀR-232 drivers/
receivers is designed to solve interface problems by meeting the
EIA-232-E specifications while using a single digital 5 V supply.
The EIA-232-E standard requires transmitters that will deliver
±5 V minimum on the transmission channel and receivers that
can accept signal levels down to ±3 V. The ADM206–ADM2±±/
ADM2±3 meet these requirements by integrating step-up voltage
converters and level shifting transmitters and receivers onto the
same chip. CMOR technology is used to keep the power dissi-
pation to an absolute minimum. A comprehensive range of
transmitter/receiver combinations is available to cover most
communication needs. The ADM206–ADM2±±/ADM2±3 are
modifications, enhancements, and improvements to the AD230–
AD24± family and derivatives thereof. They are essentially plug-
in compatible and do not have materially different applications.
GND
V– = –(V+)
INTERNAL
OSCILLATOR
Figure 23. Charge Pump Voltage Inverter
Capacitors C3 and C4 are used to reduce the output ripple.
Their values are not critical and can be reduced if higher levels
of ripple are acceptable. The charge pump capacitors C± and C2
may also be reduced at the expense of higher output impedance
on the V+ and V– supplies.
The V+ and V– supplies may also be used to power external
circuitry if the current requirements are small.
Transmitters (Drivers)
The drivers convert TTL/CMOR input levels into EIA-232-E
output levels. With VCC = +5 V and driving a typical EIA-232-E
load, the output voltage swing is ±9 V. Even under worst-case
conditions, the drivers are guaranteed to meet the ±5 V EIA-
232-E minimum requirement.
The ADM206, ADM2±±, and ADM2±3 are particularly useful in
battery-powered systems because they feature a low power shut-
down mode that reduces power dissipation to less than 5 µW.
The ADM209 includes only a negative charge pump converter
and is intended for applications where a +±2 V is available.
The input threshold levels are both TTL- and CMOR-compatible
with the switching threshold set at VCC/4. With a nominal VCC
5 V, the switching threshold is ±.25 V typical. Unused inputs
may be left unconnected, because an internal 400 kΩ pull-up
resistor pulls them high, forcing the outputs into a low state.
=
To facilitate sharing a common line or for connection to a
microprocessor data bus, the ADM206, the ADM209, the
ADM2±±, and the ADM2±3 feature an enable ( ) function.
EN
When the receivers are disabled, their outputs are placed in a
high impedance state.
As required by the EIA-232-E standard, the slew rate is limited
to less than 30 V/µs, without the need for an external slew
limiting capacitor, and the output impedance in the power-off
state is greater than 300 Ω.
CIRCUIT DESCRIPTION
The internal circuitry in the ADM206–ADM2±±/ADM2±3
consists of three main sections: (a) a charge pump voltage
converter; (b) ꢀR-232-to-TTL/CMOR receivers; and
(c) TTL/CMOR-to-ꢀR-232 transmitters.
Receivers
The receivers are inverting level shifters that accept EIA-232-E
input levels (±5 V to ±±5 V) and translate them into 5 V TTL/
CMOR levels. The inputs have internal 5 kΩ pull-down resistors
to ground and are also protected against overvoltages of up to
±30 V. The guaranteed switching thresholds are 0.8 V minimum
and 2.4 V maximum, well within the ±3 V EIA-232-E require-
ment. The low level threshold is deliberately positive, since it
ensures that an unconnected input will be interpreted as a
low level.
Charge Pump DC-to-DC Voltage Converter
The charge pump voltage converter consists of an oscillator and
a switching matrix. The converter generates a ±±0 V supply
from the 5 V input. This is done in two stages using a switched
capacitor technique, as illustrated in Figure 22 and Figure 23.
First, the 5 V input supply is doubled to ±0 V using capacitor
C± as the charge storage element. The ±0 V level is then
inverted to generate –±0 V using C2 as the storage element.
The receivers have Rchmitt-trigger inputs with a hysteresis level
of 0.65 V. This ensures error-free reception for both noisy
inputs and inputs with slow transition times.
S1
S3
V
V+ = 2V
CC
CC
+
+
C1
C3
S2
S4
V
GND
CC
Shutdown (SD)
The ADM206–ADM2±±/ADM2±3 feature a control input that
may be used to disable the part and reduce the power consump-
ion to less than 5 ΩW. This is very useful in battery-operated
systems. During shutdown, the charge pump is turned off, the
transmitters are disabled, and all receivers except ꢀ4 and ꢀ5 on
the ADM2±3 are put into a high impedance disabled state.
INTERNAL
OSCILLATOR
Figure 22. Charge Pump Voltage Doubler
Rev. C | Page 11 of 16
ADM206–ADM211/ADM213
ꢀeceivers ꢀ4 and ꢀ5 on the ADM2±3 remain enabled during
shutdown. This feature allows monitoring external activity
while the device is in a low power shutdown mode. The
shutdown control input is active high on all parts except the
ADM2±3, where it is active low. Ree Table 5 and Table 6.
APPLICATION HINTS
Driving Long Cables
In accordance with the EIA-232-E standard, long cables are
permissible provided the total load capacitance does not exceed
2500 pF. For longer cables that do exceed this, it is possible to
trade off baud rate for cable length. Large load capacitances cause
a reduction in slew rate, and therefore the maximum transmis-
sion baud rate is decreased. The ADM206–ADM2±±/ADM2±3
are designed to minimize the slew rate reduction that occurs as
load capacitance increases.
Enable Input
The ADM209, ADM2±±, and ADM2±3 feature an enable input
used to enable or disable the receiver outputs. The enable input
is active low on the ADM209 and ADM2±± and active high on
the ADM2±3. Ree Table 5 and Table 6. When the receivers are
disabled, their outputs are placed in a high impedance state.
This function allows the outputs to be connected directly to a
microprocessor data bus. It can also be used to allow receivers
from different devices to share a common data line. The timing
diagram for the enable function is shown in Figure 24.
For the receivers, it is important that a high level of noise
immunity be inbuilt so that slow rise and fall times do not
cause multiple output transitions as the signal passes slowly
through the transition region. The ADM206–ADM2±±/
ADM2±3 have 0.65 V of hysteresis to guard against this. This
ensures that even in noisy environments error-free reception
can be achieved.
3V
EN*
0V
High Baud Rate Operation
T
T
The ADM206–ADM2±±/ADM2±3 feature high slew rates,
permitting data transmission at rates well in excess of the EIA-
232-E specification. The drivers maintain ±5 V signal levels at
data rates up to ±20 kB/s under worst-case loading conditions.
EN
DIS
V
– 0.1V
+ 0.1V
3.5V
0.8V
OH
R
OUT
V
OL
*POLARITY OF EN IS REVERSED FOR ADM213.
Figure 24. Enable Timing
Rev. C | Page 12 of 16
ADM206–ADM211/ADM213
OUTLINE DIMENSIONS
1.185 (30.01)
1.165 (29.59)
1.145 (29.08)
8.50
8.20
7.90
0.295 (7.49)
0.285 (7.24)
0.275 (6.99)
24
1
13
12
24
13
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
8.20
7.80
7.40
5.60
5.30
5.00
0.180
(4.57)
MAX
0.015 (0.38) MIN
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
12
1
0.150 (3.81)
0.130 (3.30)
0.110 (2.79)
PIN 1
0.015 (0.38)
0.010 (0.25)
0.008 (0.20)
0.100
(2.54)
BSC
SEATING
PLANE
0.060 (1.52)
0.050 (1.27)
0.045 (1.14)
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
1.85
1.75
1.65
COPLANARITY
0.10
2.00 MAX
COMPLIANT TO JEDEC STANDARDS MO-095AG
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
0.95
0.75
0.55
8°
4°
0°
0.38
0.22
0.65
BSC
0.25
0.09
0.05 MIN
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-150AG
Figure 25. 24-Lead Plastic Dual In-Line Package [PDIP]
(N-24)
Figure 27. 24-Lead Shrink Small Outline Package [SSOP]
(RS-24)
Dimensions shown in inches and (millimeters)
Dimensions shown in millimeters
15.60 (0.6142)
15.20 (0.5984)
18.10 (0.7126)
17.70 (0.6969)
28
1
15
14
24
1
13
12
7.60 (0.2992)
7.40 (0.2913)
7.60 (0.2992)
7.40 (0.2913)
10.65 (0.4193)
10.00 (0.3937)
10.65 (0.4193)
10.00 (0.3937)
2.65 (0.1043)
2.35 (0.0925)
0.75 (0.0295)
0.25 (0.0098)
2.65 (0.1043)
2.35 (0.0925)
0.75 (0.0295)
0.25 (0.0098)
× 45°
× 45°
0.30 (0.0118)
0.10 (0.0039)
0.30 (0.0118)
0.10 (0.0039)
8°
0°
8°
0°
1.27 (0.0500)
BSC
SEATING
PLANE
0.51 (0.0201)
0.33 (0.0130)
1.27 (0.0500)
0.40 (0.0157)
1.27 (0.0500)
BSC
SEATING
PLANE
0.33 (0.0130)
0.20 (0.0079)
0.51 (0.020)
0.31 (0.012)
COPLANARITY
0.10
1.27 (0.0500)
0.40 (0.0157)
COPLANARITY
0.10
0.33 (0.0130)
0.20 (0.0079)
COMPLIANT TO JEDEC STANDARDS MS-013AD
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MS-013AE
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
Figure 26. 24-Lead Standard Small Outline Package [SOIC]
Figure 28. 28-Lead Standard Small Outline Package [SOIC]
Wide Body
(R-24)
Wide Body
(R-28)
Dimensions shown in millimeters and (inches)
Dimensions shown in millimeters and (inches)
Rev. C | Page 13 of 16
ADM206–ADM211/ADM213
10.50
10.20
9.90
28
15
14
5.60 8.20
5.30 7.80
5.00 7.40
1
PIN 1
1.85
1.75
1.65
COPLANARITY
0.10
2.00 MAX
0.25
0.09
8°
4°
0°
0.65
BSC
0.95
0.75
0.55
0.38
0.22
0.05 MIN
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-150AH
Figure 29. 28-Lead Shrink Small Outline Package [SSOP]
(RS-28)
Dimensions shown in millimeters
Rev. C | Page 14 of 16
ADM206–ADM211/ADM213
ORDERING GUIDE
Model
ADM206AN
ADM206AR
ADM206AR-REEL
ADM206ARS
ADM206ARS-REEL
ADM206ARZ1
ADM206ARZ-REEL1
ADM207AN
ADM207AR
ADM207AR-REEL
ADM207ARS
ADM207ARS-REEL
ADM208AN
ADM208AR
ADM208AR-REEL
ADM208ARS
ADM208ARS-REEL
ADM209AN
ADM209AR
ADM209AR-REEL
ADM209ARS
ADM209ARS-REEL
ADM211AR
ADM211AR-REEL
ADM211ARS
Temperature Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package Description
Package Option
N-24
R-24
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
24-lead SOIC
24-lead SOIC
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
24-lead DIP
24-lead SOIC
24-lead SOIC
24-lead SSOP
24-lead SSOP
28-lead SOIC
28-lead SOIC
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SOIC
28-lead SOIC
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SSOP
R-24
RS-24
RS-24
R-24
R-24
N-24
R-24
R-24
RS-24
RS-24
N-24
R-24
R-24
RS-24
RS-24
N-24
R-24
R-24
RS-24
RS-24
R-28
R-28
RS-28
RS-28
RS-28
RS-28
R-28
ADM211ARS-REEL
ADM211ARSZ1
ADM211ARSZ-REEL1
ADM213AR
ADM213AR-REEL
ADM213ARS
ADM213ARS-REEL
ADM213ARSZ1
ADM213ARSZ-REEL1
R-28
RS-28
RS-28
RS-28
RS-28
1 Z = Pb-free part.
Rev. C | Page 15 of 16
ADM206–ADM211/ADM213
NOTES
©
2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
C00067–0–1/05(C)
Rev. C | Page 16 of 16
相关型号:
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