ADM202JRWZ-REEL [ADI]
High Speed, 5 V, 0.1 µF CMOS RS-232 Driver/Receiver;
| 型号： | ADM202JRWZ-REEL |
| 厂家： | 
ADI |
| 描述： | High Speed, 5 V, 0.1 µF CMOS RS-232 Driver/Receiver 驱动 信息通信管理 光电二极管 接口集成电路 驱动器 |
| 文件： | 总11页 (文件大小：287K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Speed, 5 V, 0.1 µF
CMOS RS-232 Driver/Receiver
ADM202
Data Sheet
FEATURES
TYPICAL APPLICATION CIRCUIT
5V INPUT
120 kB transmission rate
Small (0.1 µF) charge pump capacitors
Single 5 V power supply
Meets TIA/EIA-232-E and V.28 specifications
2 drivers and 2 receivers
On-board dc-to-dc converters
9 V output swing with 5 V supply
Low power BiCMOS: 2.5 mA ICC
30 V receiver input levels
+
0.1µF
6.3V
V
16
2
1
3
C1+
C1–
CC
+5V TO +10V
VOLTAGE
DOUBLER
+
+
0.1µF
6.3V
0.1µF
6.3V
+
+
V+
V–
4
5
C2+
C2–
+10V TO –10V
VOLTAGE
INVERTER
0.1µF
16V
6
0.1µF
16V
T1
T1
11
10
12
9
14
7
T1
T2
R1
R2
IN
OUT
TTL/CMOS
RS-232
OUTPUTS
1
INPUTS
T2
IN
T2
OUT
APPLICATIONS
R1
13
8
R1
IN
OUT
OUT
Computers
Peripherals
Modems
TTL/CMOS
OUTPUTS
RS-232
INPUTS
2
R2
R2
IN
GND
15
ADM202
Printers
Instruments
1
2
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 1.
GENERAL DESCRIPTION
The ADM202 is a 2-channel RS-232 line driver/receiver pair
designed to operate from a single 5 V power supply. A highly
efficient on-chip charge pump design permits RS-232 levels to
be developed using charge pump capacitors as small as 0.1 µF.
This converter generates 10 V RS-232 output levels.
An epitaxial BiCMOS construction minimizes power consump-
tion to 10 mW and guards against latch-up. Overvoltage
protection is provided, allowing the receiver inputs to withstand
continuous voltages in excess of 30 V. In addition, all pins
contain ESD protection to levels greater than 2 kV.
The ADM202 meets or exceeds the TIA/EIA-232-E and V. 28
specifications. Fast driver slew rates permit 120 kB operation,
and high drive currents allow extended cable lengths.
The ADM202 is available in a 16-lead PDIP and both narrow
and wide 16-lead SOIC packages.
Rev. B
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rightsof third parties that may result fromits 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 andregisteredtrademarks 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
Technical Support
©2016 Analog Devices, Inc. All rights reserved.
www.analog.com
ADM202* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
DESIGN RESOURCES
• ADM202 Material Declaration
• PCN-PDN Information
DOCUMENTATION
Data Sheet
• Quality And Reliability
• Symbols and Footprints
• ADM202: High Speed, 5 V, 0.1 µF CMOS RS-232 Driver/
Receiver Data Sheet
DISCUSSIONS
View all ADM202 EngineerZone Discussions.
SOFTWARE AND SYSTEMS REQUIREMENTS
• ADI RS-485/RS-422 Cross Reference Guide
• RS-232 Transceivers Cross Reference Guide
SAMPLE AND BUY
Visit the product page to see pricing options.
TOOLS AND SIMULATIONS
• ADM202/ADM202E IBIS Model
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
REFERENCE MATERIALS
Solutions Bulletins & Brochures
• RS-232 Transceivers Applications Bulletin (Summer 2008)
Technical Articles
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
• Interface Primer
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ADM202
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Typical Performance Characteristics ..............................................6
Theory of Operation .........................................................................7
Applications Information .................................................................8
Charge Pump DC-to-DC Voltage Converter............................8
TTL/CMOS to RS-232 Transmitters (Drivers) .........................8
RS-232 to TTL/CMOS Receivers ................................................8
Outline Dimensions..........................................................................9
Ordering Guide .......................................................................... 10
Applications....................................................................................... 1
Typical Application Circuit ............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
REVISION HISTORY
8/2016—Rev. A to Rev. B
Changes to Table 2.............................................................................4
Changes to Table 3.............................................................................5
Changes to Theory of Operation Section.......................................7
Changes to TTL/CMOS to RS-232 Transmitters (Drivers)
Section and RS-232 to TLL/CMOS Receivers Section.................8
Updated Outline Dimensions..........................................................9
Changes to Ordering Guide.......................................................... 10
Updated Format..................................................................Universal
Deleted ADM203................................................................Universal
Changes to Typical Application Circuit Section Heading........... 1
Deleted ADM203 Functional Block Diagram Figure;
Renumbered Sequentially................................................................ 1
Changes to Features Section and General Description Section. 1
Deleted ADM203 Pin Configuration Figure and Figure 1 ......... 3
Changed TIN to TxIN....................................................... Throughout
1/2001—Rev. 0 to Rev. A
Rev. B | Page 2 of 10
Data Sheet
ADM202
SPECIFICATIONS
VCC = 5 V 10%, (C1 to C4 = 0.1 µF). All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Min Typ Max Unit Test Conditions/Comments
OUTPUT VOLTAGE SWING
5
5
9
9
V
V
VCC = 5 V 5%; T1OUT and T2OUT loaded with 3 kΩ to GND
VCC = 5 V 10%; TA = 25°C; T1OUT and T2OUT loaded with 3 kΩ to GND
No load; T1IN and T2IN = VCC, or T1IN and T2IN = GND
VCC POWER SUPPLY CURRENT (ICC
INPUT LOGIC THRESHOLD
Low, VINL
)
2.5
6.0
0.8
25
mA
V
V
TxIN
TxIN
High, VINH
2.4
LOGIC PULL-UP CURRENT
RS-232 INPUT
12
µA
TxIN = 0 V
Voltage Range
Threshold
Low
High
Hysteresis
−30
0.8
+30
V
1.2
1.6
0.4
5
V
V
V
kΩ
2.4
1.0
7
0.2
3
Resistance
TA = 0°C to 85°C
TTL/CMOS Output Voltage
Low, VOL
High, VOH
0.4
5
V
V
IOUT = 1.6 mA
IOUT = –1.0 mA
RS-232 to TTL
3.5
PROPAGATION DELAY
TRANSITION REGION SLEW RATE
BAUD RATE
0.3
8
µs
V/µs RL = 3 kΩ, CL = 1000 pF, measured from +3 V to –3 V or –3 V to +3 V
120
300
kB
RL = 3 kΩ, CL = 1 nF
OUTPUT
Output Resistance
Ω
VCC = V+ = V– = 0 V, VOUT = 2 V
RS-232 Output Short-Circuit Current
10
60
mA
Rev. B | Page 3 of 10
ADM202
Data Sheet
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
Table 2.
Parameter
Rating
VCC
V+
V–
6 V
(VCC − 0.3 V) to +14 V
+0.3 V to −14 V
Input Voltages
T1IN, T2IN
R1IN, R2IN
−0.3 V to (VCC + 0.3 V)
30 V
ESD CAUTION
Output Voltages
T1OUT, T2OUT
R1OUT, R2OUT
((V+) + 0.3 V) to ((V−) − 0.3 V)
–0.3 V to (VCC + 0.3 V)
Short-Circuit Duration
T1OUT, T2OUT
Continuous
Power Dissipation
16-Lead PDIP (N-16)
16-Lead SOIC (R-16)
16-Lead SOIC (RW-16)
Thermal Impedance, θJA
16-Lead PDIP (N-16)
16-Lead SOIC (R-16)
16-Lead SOIC (RW-16)
Operating Temperature Range
Commercial (J Version)
Storage Temperature Range
Lead Temperature Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
ESD Rating
470 mW
600 mW
500 mW
135°C/W
105°C/W
105°C/W
0°C to 70°C
−65°C to +150°C
215°C
220°C
>2000 V
Rev. B | Page 4 of 10
Data Sheet
ADM202
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
C1+
V+
1
2
3
4
5
6
7
8
V
CC
16
15
14
13
12
GND
T1
C1–
C2+
C2–
V–
OUT
ADM202
TOP VIEW
(Not to Scale)
R1
R1
IN
OUT
IN
11 T1
10 T2
T2
OUT
IN
R2
9 R2
OUT
IN
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic Description
1
2
C1+
V+
External Positive Capacitor 1 Connection. The positive terminal is connected to this pin.
Internally Generated Positive Supply (+10 V nominal).
3
4
5
6
C1−
C2+
C2−
V−
External Negative Capacitor 1 Connection. The negative terminal is connected to this pin.
External Positive Capacitor 2 Connection. The positive terminal is connected to this pin.
External Negative Capacitor 1 Connection. The negative terminal is connected to this pin.
Internally Generated Negative Supply (−10 V Nominal).
7, 14
8, 13
T2OUT, T1OUT Transmitter (Driver) Outputs. These outputs are RS-232 levels (typically 10 V).
R2IN, R1IN Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is
connected on each of these inputs.
R2OUT, R1OUT Receiver Outputs. These outputs are TTL/CMOS levels.
9, 12
10, 11
T2IN, T1IN
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to VCC is
connected on each input.
15
16
GND
VCC
Ground. This pin must be connected to 0 V.
Power Supply Input, 5 V 10%.
Rev. B | Page 5 of 10
ADM202
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
15
15
10
5
Tx OUTPUT HIGH
10
V+
Tx OUTPUT HIGH LOADED
5
0
0
–5
–5
–10
–15
Tx OUTPUT LOW LOADED
Tx OUTPUT LOW
V–
–10
–15
0
5
10
15
20
25
30
4.0
4.5
5.0
5.5
LOAD CURRENT (mA)
V
(V)
CC
Figure 3. Charge Pump V+, V− vs. Load Current
Figure 6. Transmitter (Tx) Output Voltage vs. VCC
30
25
20
15
10
5
15
10
5
V
R
= 5V
= 3kΩ
CC
L
f = 10kHz
Tx OUTPUT HIGH
0
LOW-TO-HIGH SLEW RATE
–5
–10
–15
HIGH-TO-LOW SLEW RATE
Tx OUTPUT LOW
0
0
0.5k
1.0k
1.5k
2.0k
2.5k
3.0k
0
2
4
6
8
10
12
14
CAPACITIVE LOAD (pF)
LOAD CURRENT (mA)
Figure 4. Transmitter Slew Rate vs. Capacitive Load
Figure 7. Transmitter (Tx) Output Voltage vs. Load Current
T
T
1
1
2
2
CH1 10.0V CH2 5.00V
M1.00µs
CH1
–6.4V
CH1 10.0V CH2 5.00V
M1.00µs
CH2
–6.4V
LOADED SLEW RATE (1nF)
UNLOADED SLEW RATE
Figure 5. Transmitter Fully Loaded Slew Rate
Figure 8. Transmitter Unloaded Slew Rate
Rev. B | Page 6 of 10
Data Sheet
ADM202
THEORY OF OPERATION
The ADM202 is an RS-232 driver/receiver designed to solve
interface problems by meeting the TIA/EIA-232E specifications
while using a single digital 5 V supply. The EIA standard
requires that transmitters deliver 5 V minimum on the
transmission channel and that receivers can accept signal levels
down to 3 V. The device achieves this by integrating step-up
voltage converters and level shifting transmitters and receivers
on the same chip. CMOS technology keeps the power dissipation
to an absolute minimum.
The ADM202 contains an internal voltage doubler and a voltage
inverter that generates 10 V from the 5 V input. External
0.1 μF capacitors are required for the internal voltage converter.
Rev. B | Page 7 of 10
ADM202
Data Sheet
APPLICATIONS INFORMATION
The internal circuitry consists of three main sections, as follows:
TTL/CMOS TO RS-232 TRANSMITTERS (DRIVERS)
The drivers convert TTL/CMOS input levels into TIA/EIA-232-E
output levels. With VCC = 5 V and driving a typical TIA/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 TIA/EIA-
232-E minimum requirement.
•
•
•
A charge pump dc-to-dc voltage converter
TTL/CMOS to RS-232 transmitters
RS-232 to TTL/CMOS receivers
CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER
The charge pump voltage converter consists of an oscillator and
a switching matrix. The converter generates a 10 V supply from
the input 5 V level in two stages, using a switched capacitor
technique as illustrated in Figure 9 and Figure 10. First, the 5 V
input supply is doubled to 10 V using Capacitor C1 as the
charge storage element. The 10 V level is then inverted to
generate −10 V using C2 as the storage element.
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 1.25 V typical. Unused inputs can
be left unconnected, as an internal 400 kΩ pull-up resistor pulls
them high, forcing the outputs into a low state.
As required by the TIA/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-
down state is greater than 300 Ω.
Capacitors C3 and C4 reduce the output ripple. Their values are
not critical and can be reduced if higher levels of ripple are
acceptable. The charge pump capacitors, C1 and C2, can also be
reduced at the expense of higher output impedance on the V+
and V− supplies.
RS-232 TO TTL/CMOS RECEIVERS
The receivers are inverting level shifters that accept TIA/EIA-232-E
input levels ( 5 V to 15 V) and translate them into 5 V TTL/
CMOS levels. The inputs have internal 5 kΩ pull-down resistors
to ground and are protected against overvoltages of up to 30 V.
The guaranteed switching thresholds are 0.8 V (VINL) and 2.4 V
(VINH), which are well within the 3 V TIA/EIA-232-E require-
ment. The low level threshold is deliberately positive because it
ensures that an unconnected input is interpreted as a low level.
The V+ and V− supplies can be used to power external circuitry
if the current requirements are small.
S1
S3
V
V+ = 2V
CC
CC
+
+
C3
C1
S2
S4
V
GND
CC
INTERNAL
OSCILLATOR
The receivers have a Schmitt triggered input with a hysteresis
level of 0.5 V. This hysteresis level ensures error free reception,
both for noisy inputs and for inputs with slow transition times.
Figure 9. Charge Pump Voltage Doubler
S1
S3
V+
GND
FROM
VOLTAGE
DOUBLER
+
+
C4
C2
S2
S4
V– = –(V+)
GND
INTERNAL
OSCILLATOR
Figure 10. Charge Pump Voltage Inverter
Rev. B | Page 8 of 10
Data Sheet
ADM202
OUTLINE DIMENSIONS
0.775
0.755
0.735
9
8
16
1
0.280
0.250
0.240
PIN 1
INDICATOR
TOP VIEW
SIDE VIEW
0.325
0.310
0.300
0.100
BSC
0.195
0.130
0.115
0.210
MAX
0.015
0.150
0.130
0.115
0.015
GAUGE
PLANE
MIN
END VIEW
0.012
0.010
0.008
SEATING
PLANE
0.021
0.022
0.430
MAX
0.018
0.015
0.016
0.011
0.070
0.060
0.055
0.045
0.039
0.030
COMPLIANT TO JEDEC STANDARDS MS-001-BB
Figure 11. 16-Lead Plastic Dual In-Line Package [PDIP]
Narrow Body
(N-16)
Dimensions shown in inches
10.00 (0.3937)
9.80 (0.3858)
9
8
16
1
6.20 (0.2441)
5.80 (0.2283)
4.00 (0.1575)
3.80 (0.1496)
1.27 (0.0500)
0.50 (0.0197)
0.25 (0.0098)
45°
BSC
1.75 (0.0689)
1.35 (0.0531)
0.25 (0.0098)
0.10 (0.0039)
8°
0°
COPLANARITY
0.10
SEATING
PLANE
1.27 (0.0500)
0.40 (0.0157)
0.51 (0.0201)
0.31 (0.0122)
0.25 (0.0098)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012-AC
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 12. 16-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-16)
Dimensions shown in millimeters and (inches)
Rev. B | Page 9 of 10
ADM202
Data Sheet
10.50 (0.4134)
10.10 (0.3976)
16
1
9
8
7.60 (0.2992)
7.40 (0.2913)
10.65 (0.4193)
10.00 (0.3937)
0.75 (0.0295)
0.25 (0.0098)
1.27 (0.0500)
BSC
45°
2.65 (0.1043)
2.35 (0.0925)
0.30 (0.0118)
0.10 (0.0039)
8°
0°
COPLANARITY
0.10
SEATING
PLANE
0.51 (0.0201)
0.31 (0.0122)
1.27 (0.0500)
0.40 (0.0157)
0.33 (0.0130)
0.20 (0.0079)
COMPLIANT TO JEDEC STANDARDS MS-013-AA
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 13. 16-Lead Standard Small Outline Package [SOIC_W]
Wide Body
(RW-16)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model1
Temperature Range
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
Package Description
Package Option
N-16
R-16
R-16
R-16
R-16
R-16
R-16
RW-16
RW-16
ADM202JNZ
ADM202JRN
16-Lead Plastic Dual In-Line Package [PDIP]
16-Lead Standard Small Outline Package [SOIC_N]
16-Lead Standard Small Outline Package [SOIC_N]
16-Lead Standard Small Outline Package [SOIC_N]
16-Lead Standard Small Outline Package [SOIC_N]
16-Lead Standard Small Outline Package [SOIC_N]
16-Lead Standard Small Outline Package [SOIC_N]
16-Lead Standard Small Outline Package [SOIC_W]
16-Lead Standard Small Outline Package [SOIC_W]
ADM202JRN-REEL
ADM202JRN-REEL7
ADM202JRNZ
ADM202JRNZ-REEL
ADM202JRNZ-REEL7
ADM202JRWZ
ADM202JRWZ-REEL
1 Z = RoHS Compliant Part.
©2016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D00065-0-8/16(B)
Rev. B | Page 10 of 10
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