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ADG3243 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADG3243
Beschreibung Individual Control Level Translator Bus Switch
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 13 Seiten
ADG3243 Datasheet, Funktion
FEATURES
225 ps Propagation Delay through the Switch
4.5 Switch Connection between Ports
Data Rate 1.5 Gbps
2.5 V/3.3 V Supply Operation
Level Translation
3.3 V to 2.5 V
2.5 V to 1.8 V
Small Signal Bandwidth 710 MHz
8-Lead SOT-23 Package
APPLICATIONS
3.3 V to 2.5 V Voltage Translation
2.5 V to 1.8 V Voltage Translation
Bus Switching
Bus Isolation
Hot Swap
Hot Plug
Analog Switch Applications
2.5 V/3.3 V, 2-Bit, Individual Control
Level Translator Bus Switch
ADG3243
FUNCTIONAL BLOCK DIAGRAM
A0 B0
BE0
A1
BE1
B1
GENERAL DESCRIPTION
The ADG3243 is a 2.5 V or 3.3 V, 2-bit, 2-port digital switch
with individual channel control. It is designed on a low voltage
CMOS process, which provides low power dissipation yet gives
high switching speed and very low on resistance. This allows the
inputs to be connected to the outputs without additional propa-
gation delay or generating additional ground bounce noise.
The switches are enabled by means of the bus enable (BEx) input
signal. This digital switch allows a bidirectional signal to be
switched when ON. In the OFF condition, signal levels up to
the supplies are blocked.
This device is ideal for applications requiring level translation.
When operated from a 3.3 V supply, level translation from 3.3 V
inputs to 2.5 V outputs is allowed. Similarly, if the device is
operated from a 2.5 V supply and 2.5 V inputs are applied, the
device will translate the outputs to 1.8 V. This makes the device
suited to applications requiring level translation between different
supplies, such as converter to DSP/microcontroller interfacing.
PRODUCT HIGHLIGHTS
1. 3.3 V or 2.5 V supply operation.
2. Extremely low propagation delay through switch.
3. 4.5 switches connect inputs to outputs.
4. Level/voltage translation.
5. Tiny SOT-23 package.
REV. 0
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. 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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.






ADG3243 Datasheet, Funktion
40
35 TA = 25؇C
VCC = 3V
30
25
VCC = 3.3V
20
15
10 VCC = 3.6V
5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VA/VB (V)
TPC 1. On Resistance vs.
Input Voltage
15
VCC = 2.5V
10
؉85؇C
5
؊40؇C
؉25؇C
0
0 0.5 1.0 1.2
VA/VB (V)
TPC 4. On Resistance vs. Input
Voltage for Different Temperatures
Typical Performance Characteristics–ADG3243
40
35 TA = 25؇C
VCC = 2.3V
30
25
VCC = 2.5V
20
15
VCC = 2.7V
10
5
0
0 0.5 1.0 1.5 2.0 2.5
VA/VB (V)
TPC 2. On Resistance vs.
Input Voltage
3.0
20
VCC = 3.3V
15
10
؉85؇C
5 ؉25؇C
؊40؇C
0
0
0.5 1.0 1.5 2.0
VA/VB (V)
TPC 3. On Resistance vs. Input
Voltage for Different Temperatures
3.0
TA = 25؇C
IO = –5A
2.5
VCC = 3.6V
2.0 VCC = 3.3V
VCC = 3V
1.5
1.0
0.5
00 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VA/VB (V)
TPC 5. Pass Voltage vs. VCC
2.5
TA = 25؇C
IO = –5A
2.0
VCC = 2.7V
1.5 VCC = 2.5V
VCC = 2.3V
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VA/VB (V)
TPC 6. Pass Voltage vs. VCC
500
TA = 25؇C
450
400
350
300 VCC = 3.3V
250
200
150
100
VCC = 2.5V
50
0
0 5 10 15 20 25 30 35 40 45 50
ENABLE FREQUENCY (MHz)
TPC 7. ICC vs. Enable Frequency
3.0
TA = 25؇C
2.5
VA = 0V
BEx = 0
2.0
1.5
VCC = 3.3V
1.0
0.5
0 VCC = 2.5V
0 0.02 0.04 0.06 0.08 0.10
IO (A)
TPC 8. Output Low Characteristic
3.0
TA = 25؇C
2.5
VA = VCC
BEx = 0
2.0
1.5
VCC = 3.3V
1.0 VCC = 2.5V
0.5
0
–0.10 –0.08
–0.06 –0.04
IO (A)
–0.02
0
TPC 9. Output High Characteristic
REV. 0
–5–

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