データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

ADM205AN データシート(PDF) 9 Page - Analog Devices

部品番号 ADM205AN
部品情報  0.1 uF, 5 V Powered CMOS RS-232 Drivers/Receivers
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

ADM205AN データシート(HTML) 9 Page - Analog Devices

Back Button ADM205AN Datasheet HTML 4Page - Analog Devices ADM205AN Datasheet HTML 5Page - Analog Devices ADM205AN Datasheet HTML 6Page - Analog Devices ADM205AN Datasheet HTML 7Page - Analog Devices ADM205AN Datasheet HTML 8Page - Analog Devices ADM205AN Datasheet HTML 9Page - Analog Devices ADM205AN Datasheet HTML 10Page - Analog Devices ADM205AN Datasheet HTML 11Page - Analog Devices ADM205AN Datasheet HTML 12Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 9 / 12 page
background image
ADM205–ADM211/ADM213
REV. 0
–9–
10
90
100
0%
5V
0.8 V
A3
5V
5
B
Lw
1Ms
H
O
Figure 20. Charge Pump, V+, V– Exiting Shutdown
10
90
100
0%
5V
0.8 V
A3
5
B
Lw
5
µs
H
O
Figure 21. Transmitter Output Loaded Slew Rate
10
90
100
0%
5V
0.8 V
A3
5
B
Lw
1
µs
H
O
Figure 22. Transmitter Output Unloaded Slew Rate
GENERAL INFORMATION
The ADM205-ADM211 and ADM213 family of RS-232 driv-
ers/receivers are 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 which
will deliver
±5 V minimum on the transmission channel and re-
ceivers which can accept signal levels down to
±3 V. The
ADM205-ADM211 and ADM213 meet these requirements by
integrating step up voltage converters and level shifting trans-
mitters 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 communications needs. The ADM205–
ADM211 and ADM213 are modifications, enhancements and
improvements to the AD230–AD241 family and derivatives
thereof. They are essentially plug-in compatible and do not have
materially different applications.
The ADM205, ADM206, ADM211, and ADM213 are particu-
larly useful in battery powered systems as they feature a low
power shutdown mode which reduces power dissipation to less
than 5
µW.
The ADM205 is designed for applications where space saving is
important as the charge pump capacitors are molded into the
package.
The ADM209 includes only a negative charge pump converter
and are intended for applications where a positive 12 V is available.
To facilitate sharing a common line or for connection to a mi-
croprocessor data bus the ADM205, ADM206, ADM209,
ADM211 and ADM213 feature an enable (EN) function. When
disabled, the receiver outputs are placed in a high impedance
state.
CIRCUIT DESCRIPTION
The internal circuitry in the ADM205-ADM211 and ADM213
consists of three main sections. These are:
(a) A charge pump voltage converter
(b) RS-232 to TTL/CMOS receivers
(c) TTL/CMOS to RS-232 transmitters
Charge Pump DC-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. This is done in two stages using a
switched capacitor technique as illustrated in Figures 23 and 24.
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 in-
verted to generate –10 V using C2 as the storage element.
S1
S3
V+ = 2V
CC
S2
S4
INTERNAL
OSCILLATOR
C1
C3
V
CC
GND
V
CC
Figure 23. Charge-Pump Voltage Doubler
S1
S3
S2
S4
INTERNAL
OSCILLATOR
C2
C4
V– = – (V+)
GND
V+
GND
FROM
VOLTAGE
DOUBLER
Figure 24. 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 C1 and
C2 may also be reduced at the expense of higher output imped-
ance on the V+ and V– supplies.
The V+ and V– supplies may also be used to power external cir-
cuitry if the current requirements are small.


同様の部品番号 - ADM205AN

メーカー部品番号データシート部品情報
logo
Analog Devices
ADM205 AD-ADM205_15 Datasheet
363Kb / 12P
   CMOS RS-232 Drivers/Receivers
REV. 0
More results

同様の説明 - ADM205AN

メーカー部品番号データシート部品情報
logo
Analog Devices
ADM207EARSZ AD-ADM207EARSZ Datasheet
218Kb / 16P
   0.1 muF, 5 V Powered CMOS RS-232 Drivers/Receivers
REV. C
ADM206 AD-ADM206 Datasheet
254Kb / 16P
   0.1 μF, 5 V Powered CMOS RS-232 Drivers/Receivers
Rev. D
ADM232LJRZ AD-ADM232LJRZ Datasheet
304Kb / 20P
   5 V-Powered CMOS RS-232 Drivers/Receivers
REV. C
ADM223 AD-ADM223_15 Datasheet
340Kb / 16P
   5 V Powered CMOS RS-232 Drivers/Receivers
REV. B
AD230 AD-AD230 Datasheet
363Kb / 11P
   5 V Powered CMOS RS-232 Drivers/Receivers
REV. A
AD230 AD-AD230_15 Datasheet
4Mb / 15P
   5 V POWERED CMOS RS 232 DRIVERS RECEIVERS
ADM223 AD-ADM223 Datasheet
364Kb / 16P
   5 V Powered CMOS RS-232 Drivers/Receivers
REV. 0
ADM233LJNZ AD-ADM233LJNZ Datasheet
281Kb / 20P
   5 V-Powered CMOS RS-232 Drivers/Receivers
REV. C
ADM233LJNZ AD-ADM233LJNZ Datasheet
304Kb / 20P
   5 V-Powered CMOS RS-232 Drivers/Receivers
REV. C
ADM206 AD-ADM206_11 Datasheet
254Kb / 16P
   0.1 關F, 5 V Powered CMOS RS-232 Drivers/Receivers
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com