ADM213ARZ-REEL [ADI]
0.1 μF, 5 V Powered CMOS RS-232 Drivers/Receivers; 0.1 μF , 5 V供电的CMOS RS - 232驱动器/接收器型号: | ADM213ARZ-REEL |
厂家: | ADI |
描述: | 0.1 μF, 5 V Powered CMOS RS-232 Drivers/Receivers |
文件: | 总16页 (文件大小:254K) |
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/ADM207/ADM208/ADM211/ADM213
FEATURES
TYPICAL OPERATING CIRCUIT
5V INPUT
0.1 μF to 10 μF capacitors
120 kB/s data rate
12
14
V
CC
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
11
13
+
+
+
0.1
16V
μF
0.1μF
0.1μF
+
+
Two receivers active in shutdown (ADM213)
On-board dc-to-dc converters
9 V output swing with 5 V supply
Low power (15 mW)
6.3V
V+
V–
+10VTO –10V
VOLTAGE
INVERTER
15 C2+
17
0.1μF
16V
0.1
16V
μF
16
C2–
Low power shutdown ≤ 5 μW
30 V 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
Pin compatible to MAX206-211/213
20
21
8
1
28
9
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
R1
R2
R3
R4
R5
OUT
OUT
4
5
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
27
23
26
22
19
24
OUT
OUT
OUT
EN
IN
IN
IN
2
18
25
SD
ADM211
GND
10
NOTES
1
INTERNAL 400k
Ω PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5k
Ω
PULL-DOWN RESIST OR ON EACH RS-232 INPUT.
Figure 1.
GENERAL DESCRIPTION
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.
All members of the ADM2xx family 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 RS-232 output levels.
Table 1. Selection Table
TTL Three-
Part
Number
Power Supply
Voltage
Number of RS-
232 Drivers
Number of
RS-232 Receivers Capacitors
External
Low Power
Shutdown (SD)
Number of Receivers
Active in Shutdown
EN
State
Yes
No
ADM206
ADM207
ADM208
ADM211
ADM213
5 V
5 V
5 V
5 V
5 V
4
5
4
4
4
3
3
4
5
5
4
4
4
4
4
Yes
No
No
Yes
0
0
0
0
2
No
Yes
SD
Yes (EN)
Yes (
)
Rev. D
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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2011 Analog Devices, Inc. All rights reserved.
ADM206/ADM207/ADM208/ADM211/ADM213
TABLE OF CONTENTS
Features .............................................................................................. 1
Pin Configurations and Function Descriptions............................5
Typical Performance Characteristics ..............................................9
General Information ...................................................................... 11
Circuit Description .................................................................... 11
Application Hints ....................................................................... 12
Outline Dimensions....................................................................... 13
Ordering Guide .......................................................................... 16
Applications....................................................................................... 1
Typical Operating Circuit................................................................ 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
REVISION HISTORY
5/11—Data Sheet Changed from Rev. C to Rev. D
Deleted ADM209................................................................Universal
Changes to Figure 5.......................................................................... 5
Updated Outline Dimensions....................................................... 13
Changes to Ordering Guide .......................................................... 15
1/05—Data Sheet Changed from Rev. B to Rev. C
Changes to Specifications................................................................ 3
Change to Receivers section.......................................................... 11
Change to Driving Long Cables section...................................... 12
Updated Outline Dimensions....................................................... 13
Changes to Ordering Guide .......................................................... 15
6/02—Data Sheet Changed from Rev. A to Rev. B
Removed 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
Specifications page ........................................................................... 2
Updated Figures............................................................................ 8, 9
Revision 0: Initial Version
Rev. D | Page 2 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
SPECIFICATIONS
VCC = 5 V ± ±0% (ADM206, ADM207, ADM208, ADM2±±, ADM2±3); 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
±5
±±
5
1
V
All transmitter outputs loaded with 3 kΩ to ground
No load
VCC Power Supply Current
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
13
10
0.8
mA
μA
V
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.±
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, ADM211 (Figure 22. CL = 150 pF)
ADM206, ADM211 (Figure 22. 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)
Output Disable Time (TDIS
Propagation Delay
3.5
0.05 ±10
115
165
0.5
8
μA
ns
ns
μs
)
5
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. D | Page 3 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Stresses above those listed under Absolute Maximum Ratings
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
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Table 3.
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
ESD CAUTION
(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
±00 mW
850 mW
±00 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°
Rev. D | Page 4 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
PIN CONFIGURATION4 AND FUNCTION DESCRIPTIONS
1
2
24
23
22
21
20
19
18
17
16
15
14
13
T3
T1
T2
T4
OUT
1
2
24
23
22
21
20
19
18
17
T3
T1
T2
T4
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+
V–
C2–
C2+
C2–
C2+
C1–
C1–
Figure 2. ADM206 PDIP/SOIC/SSOP Pin Configuration
Figure 4. ADM207 PDIP/SOIC/SSOP Pin Configuration
5V INPUT
10
12
V
CC
+5VTO +10V
VOLTAGE
DOUBLER
9
C1+
C1–
5V INPUT
+
+
+
0.1μF
0.1μF
0.1μF
+
+
6.3V
11
6.3V
V+
V–
V
10
12
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
9
+
+
CC
+
0.1μF
0.1μF
0.1μF
+
+
+10V TO –10V
VOLTAGE
INVERTER
13 C2+
15
6.3V
6.3V
V+ 11
0.1μF
16V
0.1μF
16V
14
C2–
+10VTO –10V
VOLTAGE
INVERTER
13
C2+
V–
15
0.1μF
16V
0.1μF
16V
14 C2–
2
3
T1
IN
T1
T2
T3
T4
T5
R1
R2
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
T3
IN
T3
TTL/CMOS
1
18
19
21
5
OUT
1
RS-232
OUTPUTS
1
INPUTS
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
OUT
OUT
OUT
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R2
R3
22
R2
IN
23
16
OUT
2
TTL/CMOS
OUTPUTS
R2
R3
RS-232
INPUTS
22
17
R2
IN
23
16
2
17
20
R3
IN
OUT
R3
R3
IN
21
SD
EN
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
INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
2
INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 5. ADM207 Typical Operating Circuit
Figure 3. ADM206 Typical Operating Circuit
Rev. D | Page 5 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
1
2
28 T4
OUT
T3
T1
T2
OUT
27
26
25
24
23
22
R3
OUT
IN
1
2
24
23
22
21
20
19
18
17
T2
T1
T3
OUT
3
R3
OUT
OUT
OUT
R3
R3
T4
4
R2
SD
OUT
IN
IN
3
R2
5
R2
EN
R4
IN
OUT
OUT
4
6
R2
T2
OUT
IN
IN
IN
IN
ADM211
TOP VIEW
(Not to Scale)
5
T1
7
R4
T1
T4
T3
T2
OUT
IN
IN
OUT
ADM208
TOP VIEW
(Not to Scale)
6
R1
OUT
R1
8
21 T4
IN
OUT
7
R1
9
T3
R1
20
19
18
17
16
15
IN
IN
IN
IN
8
GND
GND
R4
10
11
12
13
R5
R5
V–
OUT
IN
OUT
V
9
16 R4
V
CC
CC
IN
10
11
12
15
14
13
C1+
V+
V–
C1+
V+
C2–
C2+
C2–
C2+
C1–
C1– 14
Figure 6. ADM208 PDIP/SOIC/SSOP Pin Configuration
Figure 8. ADM211 SOIC/SSOP Pin Configuration
5V INPUT
V
12
14
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
11
13
+
+
CC
+
5V INPUT
0.1
16V
μF
0.1μF
0.1μF
+
+
6.3V
V+
V–
V
9
10
12
C1+
C1–
+5VTO +10V
VOLTAGE
DOUBLER
+
+
CC
+
0.1
6.3V
μF
0.1μF
+10VTO –10V
VOLTAGE
INVERTER
0.1μ
F
C2+
15
17
+
+
0.1μF
16V
11
6.3V
0.1
16V
μF
V+
V–
16 C2–
+10VTO –10V
VOLTAGE
INVERTER
13 C2+
14 C2–
15
0.1μF
16V
0.1
16V
μF
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
T1
T1
T2
T3
T4
R1
R2
R3
R4
2
T1
5
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
T2
T3
T4
1
T2
T3
T4
R1
R2
R3
R4
1
28
9
18
19
21
20
21
8
TTL/CMOS
RS-232
OUTPUTS
1
INPUTS
24
20
R1
R2
R3
R4
R5
OUT
OUT
OUT
OUT
R1
R2
R3
R4
OUT
OUT
OUT
OUT
7
3
6
4
4
5
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
IN
IN
IN
26
22
19
24
27
23
IN
IN
IN
2
TTL/CMOS
OUTPUTS
RS-232
INPUTS
2
22
17
23
16
18
25
OUT
ADM208
GND
8
SD
EN
ADM211
GND
10
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
INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
2
INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 9. ADM211 Typical Operating Circuit
Figure 7. ADM208 Typical Operating Circuit
Rev. D | Page 6 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
5V INPUT
12
14
V
11
13
+5VTO +10V
VOLTAGE
DOUBLER
C1+
C1–
+
+
CC
+
0.1
16V
μF
0.1μF
0.1μF
+
+
6.3V
V+
+10VTO –10V
VO LTAG E
INVERTER
15 C2+
V– 17
0.1μF
16V
0.1
16V
μF
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
T2
T3
T4
T2
T3
T4
R1
R2
R3
R4
R5
TTL/CMOS
INPUTS
RS-232
OUTPUTS
1
1
28
9
20
21
8
1
2
28
T3
T1
T2
T4
OUT
OUT
27
R3
R3
R1
R2
R3
OUT
IN
OUT
OUT
3
26
OUT
OUT
4
5
IN
IN
4
25
R2
SD
EN
IN
5
24
R2
TTL/CMOS
OUTPUTS
OUT
RS-232
INPUTS
26
22
19
24
27
23
OUT
3
2
6
23
T2
T1
R4
*
IN
IN
IN
ADM213
TOP VIEW
(Not to Scale)
7
22
3
R4
T4
*
R4
OUT
OUT
IN
R1
8
21
OUT
IN
IN
3
3
18
25
R5
OUT
IN
R1
9
20 T3
IN
GND
10
11
19
18
17
16
15
R5
*
OUT
EN
SD
ADM213
V
R5
V–
*
GND
10
CC
IN
C1+ 12
13
14
V+
C2–
C2+
NOTES
1
C1–
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 5k
Ω
*ACTIVE IN SHUTDOWN
Figure 10. ADM213 SOIC/SSOP Pin Configuration
Figure 11. ADM213 Typical Operating Circuit
Rev. D | Page 7 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
Table 4. Pin Function Descriptions
Mnemonic Function
VCC
Power Supply Input. 5 V ± 10ꢀ.
V+
V–
Internally Generated Positive Supply (10 V nominal).
Internally Generated Negative Supply (–10 V Nominal).
Ground Pin. Must be connected to 0 V.
External Capacitor (+ terminal) is connected to this pin.
External Capacitor (– terminal) is connected to this pin.
External Capacitor (+ terminal) is connected to this pin.
External Capacitor (– terminal) is connected to this pin.
GND
C1+
C1–
C2+
C2–
TIN
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 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. D | Page 8 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
TYPICAL PERFORMANCE CHARACTERISTICS
15
15
10
10
V+
Tx O/P HIGH
5
5
0
0
–5
–5
V
–
Tx O/P LOW
–10
–
–
10
15
–15
0
5
10
LOAD CURRENT (mA)
15
20
3000
6.0
0
2
4
6
8
10
LOAD CURRENT (mA)
Figure 12. Charge Pump V+, V– vs. Load Current
Figure 15. 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 13. Transmitter Slew Rate vs. Load Capacitance
Figure 16. 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 14. Transmitter Output Voltage vs. VCC
Figure 17. Charge Pump, V+, V– Exiting Shutdown
Rev. D | Page ± of 16
ADM206/ADM207/ADM208/ADM211/ADM213
Tx INPUT
T
T
Tx INPUT
1
2
1
T
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 18. Transmitter Output Loaded Slew Rate
Figure 19. Transmitter Output Unloaded Slew Rate
Rev. D | Page 10 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
GENERAL INFORMATION
S1
S2
S3
S4
V+
The ADM2xx family of RS-232 drivers/ receivers is designed to
solve interface problems by meeting the EIA-232-E
GND
FROM
VOLTAGE
DOUBLER
+
+
C2
C4
GND
V– = –(V+)
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 ADM2xx meet these
requirements by integrating step-up voltage converters and level
shifting transmitters and receivers onto the same chip. CMOS
technology is used to keep the power dissipation to an absolute
minimum. A comprehensive range of transmitter/ receiver
combinations is available to cover most communication needs.
The ADM2xx are modifications, enhancements, and
INTERNAL
OSCILLATOR
Figure 21. 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.
improvements to the AD2xx family and derivatives thereof. They
are essentially plug-in compatible and do not have materially
different applications.
The V+ and V– supplies may also be used to power external
circuitry if the current requirements are small.
Transmitters (Drivers)
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 drivers convert TTL/CMOS 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 ±ꢀ V. Even under worst-case
conditions, the drivers are guaranteed to meet the ±5 V EIA-
232-E minimum requirement.
To facilitate sharing a common line or for connection to a
microprocessor data bus, the ADM206, the ADM2±±, and the
ADM2±3 feature an enable ( ) function. When the receivers
are disabled, their outputs are placed in a high impedance state.
EN
The input threshold levels are both TTL- and CMOS-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.
=
CIRCUIT DESCRIPTION
The internal circuitry in the ADM2xx consists of three main
sections: (a) a charge pump voltage converter; (b) RS-232-to-
TTL/CMOS receivers; and (c) TTL/CMOS-to-RS-232
transmitters.
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.
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 20 and Figure 2±.
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.
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/
CMOS 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.
S1
S3
V
V+ = 2V
CC
CC
+
+
C1
C3
S2
S4
V
GND
CC
INTERNAL
OSCILLATOR
The receivers have Schmitt-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.
Figure 20. Charge Pump Voltage Doubler
Rev. D | Page 11 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
Shutdown (SD)
APPLICATION HINTS
The ADM2xx 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 R4 and R5 on the ADM2±3 are
put into a high impedance disabled state. Receivers R4 and R5
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. See
Table 5 and Table 6.
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 ADM2xx are designed to
minimize the slew rate reduction that occurs as load
capacitance increases.
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 ADM2xx have 0.65 V of hysteresis to
guard against this. This ensures that even in noisy environments
error-free reception can be achieved.
Enable Input
The ADM2±± and ADM2±3 feature an enable input used to
enable or disable the receiver outputs. The enable input is active
low on the ADM2±± and active high on the ADM2±3. See
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 22.
High Baud Rate Operation
The ADM2xx 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.
3V
EN*
0V
T
T
EN
DIS
V
– 0.1V
+ 0.1V
3.5V
0.8V
OH
R
OUT
V
OL
*POLARITY OF EN IS REVERSED FOR ADM213.
Figure 22. Enable Timing
Rev. D | Page 12 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
OUTLINE DIMENSIONS
1.185 (30.01)
1.165 (29.59)
1.145 (29.08)
0.295 (7.49)
0.285 (7.24)
0.275 (6.99)
13
24
1
12
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.180
(4.57)
MAX
0.015 (0.38) MIN
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
0.150 (3.81)
0.130 (3.30)
0.110 (2.79)
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)
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
Figure 23. 24-Lead Plastic Dual In-Line Package [PDIP]
Narrow Body
(N-24-1)
Dimensions shown in inches and (millimeters)
15.60 (0.6142)
15.20 (0.5984)
24
1
13
12
7.60 (0.2992)
7.40 (0.2913)
10.65 (0.4193)
10.00 (0.3937)
2.65 (0.1043)
2.35 (0.0925)
0.75 (0.0295)
0.25 (0.0098)
× 45°
0.30 (0.0118)
0.10 (0.0039)
8°
0°
1.27 (0.0500)
BSC
SEATING
PLANE
0.51 (0.020)
0.31 (0.012)
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
Figure 24. 24-Lead Standard Small Outline Package [SOIC_W]
Wide Body
(RW-24)
Dimensions shown in millimeters and (inches)
Rev. D | Page 13 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
8.50
8.20
7.90
24
13
12
8.20
7.80
7.40
5.60
5.30
5.00
1
PIN 1
1.85
1.75
1.65
COPLANARITY
0.10
2.00 MAX
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 Shrink Small Outline Package [SSOP]
(RS-24)
Dimensions shown in millimeters
18.10 (0.7126)
17.70 (0.6969)
28
1
15
14
7.60 (0.2992)
7.40 (0.2913)
10.65 (0.4193)
10.00 (0.3937)
2.65 (0.1043)
2.35 (0.0925)
0.75 (0.0295)
0.25 (0.0098)
× 45°
0.30 (0.0118)
0.10 (0.0039)
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)
0.33 (0.0130)
0.20 (0.0079)
COPLANARITY
0.10
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. 28-Lead Standard Small Outline Package [SOIC_W]
Wide Body
(RW-28)
Dimensions shown in millimeters and (inches)
Rev. D | Page 14 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
10.50
10.20
9.90
28
15
5.60 8.20
5.30 7.80
5.00 7.40
14
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 27. 28-Lead Shrink Small Outline Package [SSOP]
(RS-28)
Dimensions shown in millimeters
Rev. D | Page 15 of 16
ADM206/ADM207/ADM208/ADM211/ADM213
ORDERING GUIDE
Model1
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
–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
24-lead PDIP
24-lead PDIP
Package Option
N-24-1
N-24-1
RW-24
RW-24
RW-24
RW-24
RS-24
ADM206AN
ADM206ANZ
ADM206AR
ADM206AR-REEL
ADM206ARZ
ADM206ARZ-REEL
ADM206ARS
ADM206ARSZ
ADM206ARSZ-REEL
ADM207AN
ADM207ANZ
ADM207AR
ADM207ARZ
ADM207ARZ-REEL
ADM207ARS
ADM207ARSZ
ADM207ARSZ-REEL
ADM208AN
ADM208ANZ
ADM208AR
ADM208AR-REEL
ADM208ARZ
ADM208ARZ-REEL
ADM208ARSZ
ADM208ARSZ-REEL
ADM211AR
ADM211AR-REEL
ADM211ARZ
ADM211ARZ-REEL
ADM211ARS
ADM211ARS-REEL
ADM211ARSZ
ADM211ARSZ-REEL
ADM213AR
ADM213ARZ
ADM213ARZ-REEL
ADM213ARS
24-lead SOIC_W
24-lead SOIC_W
24-lead SOIC_W
24-lead SOIC_W
24-lead SSOP
24-lead SSOP
24-lead SSOP
24-lead PDIP
RS-24
RS-24
N-24-1
N-24-1
RW-24
RW-24
RW-24
RS-24
24-lead PDIP
24-lead SOIC_W
24-lead SOIC_W
24-lead SOIC_W
24-lead SSOP
24-lead SSOP
24-lead SSOP
24-lead PDIP
RS-24
RS-24
N-24-1
N-24-1
RW-24
RW-24
RW-24
RW-24
RS-24
24-lead PDIP
24-lead SOIC_W
24-lead SOIC_W
24-lead SOIC_W
24-lead SOIC_W
24-lead SSOP
24-lead SSOP
28-lead SOIC_W
28-lead SOIC_W
28-lead SOIC_W
28-lead SOIC_W
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SSOP
28-lead SOIC_W
28-lead SOIC_W
28-lead SOIC_W
28-lead SSOP
28-lead SSOP
RS-24
RW-28
RW-28
RW-28
RW-28
RS-28
RS-28
RS-28
RS-28
RW-28
RW-28
RW-28
RS-28
RS-28
RS-28
ADM213ARS-REEL
ADM213ARSZ
ADM213ARSZ-REEL
28-lead SSOP
28-lead SSOP
RS-28
1 Z = RoHS Compliant Part.
©2011 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D00067-0-5/11(D)
Rev. D | Page 16 of 16
相关型号:
©2020 ICPDF网 联系我们和版权申明