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ADG796A Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADG796A
Beschreibung Hex 2:1 Multiplexer
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 24 Seiten
ADG796A Datasheet, Funktion
www.DataSheet4U.com
Preliminary Technical Data
I2C® Compatible, Wide Bandwidth,
Hex 2:1 Multiplexer
ADG796A
FEATURES
Bandwidth: 325 MHz
Low insertion loss and on resistance: 2.6 Ω typical
On resistance flatness: 0.3 Ω typical
Single 3 V/5 V supply operation
3.3 V analog signal range (5 V supply, 75 Ω load)
Low quiescent supply current: 1 nA typical
Fast switching times:
tON 186 ns
tOFF 177 ns
I2C-compatible interface
Compact 24-lead LFCSP
APPLICATIONS
S-Video RGB/YPbPr video switches
HDTV
Projection TV
DVD-R/RW
AV receivers
GENERAL DESCRIPTION
The ADG796A is a monolithic CMOS device comprising six 2:1
multiplexer/demultiplexers controllable via a standard I2C serial
interface. The CMOS process provides ultralow power dissipa-
tion, yet offers high switching speed and low on resistance.
The on-resistance profile is very flat over the full analog input
range and wide bandwidth ensures excellent linearity and low
distortion. These features, combined with a wide input signal
range make the ADG796A the ideal switching solution for a
wide range of TV applications including S-Video, YPbPr and
RGB video switches.
The switches conduct equally well in both directions when on. In
the off condition, signal levels up to the supplies are blocked. The
ADG796A switches exhibit break-before-make switching action.
The integrated I2C interface provides a large degree of flexibility
in the system design. It has two user adjustable I2C address pins
that allow up to four devices on the same bus. This allows the
FUNCTIONAL BLOCK DIAGRAM
VDD
GND
ADG796A
S1A
D1
S1B
S2A
D2
S2B
S3A
D3
S3B
S4A
D4
S4B
S5A
D5
S5B
S6A
D6
S6B
I2C SERIAL
INTERFACE
A0 A1 SDA SCL
Figure 1.
user to expand the capability of the device by increasing the size
of the switching array.
The ADG796A operates from a single 3 V or 5 V supply voltage
and is available in a compact 4 mm × 4 mm body, 24-lead, lead-
free LFCSP.
PRODUCT HIGHLIGHTS
1. Wide bandwidth: 325 MHz.
2. Ultralow power dissipation.
3. Extended input signal range.
4. Integrated I2C serial interface
5. Compact 4 mm × 4 mm, 24-lead, lead-free LFCSP.
Rev. Pr.G
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
DataSheet4 U .com
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.






ADG796A Datasheet, Funktion
www.DataSheet4U.com
ADG796A
Preliminary Technical Data
Parameter
POWER REQUIREMENTS
IDD
Conditions
Digital inputs = 0 V or VDD, I2C Interface
inactive
I2C Interface active, fSCL=400kHz
I2C Interface active, fSCL=3.4MHz
1All typical values are at TA = +25°C, unless otherwise stated.
2 Guaranteed by initial characterization, not subject to production test
3 Guaranteed by design, not subject to production test.
Min
Typ1 Max
Units
0.001 1
0.1
0.2
µA
mA
mA
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Rev. Pr.G | Page 6 of 24

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ADG796A pdf, datenblatt
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ADG796A
0
–0.5
–1.0
TA = 25°C
VDD = 3V
–1.5
VDD = 5V
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
0
0.5 1.0 1.5 2.0 2.5 3.0
SOURCE VOLTAGE (V)
3.5
Figure 10. Charge Injection vs. Source Voltage
220
4.0
210
tON (3V)
200 tOFF (3V)
190
180 tON (5V)
170
tOFF (5V)
160
–40
–20
0 20 40
TEMPERATURE (°C)
60
Figure 11.TON/TOFF vs. Temperature
0
TA = 25°C
VDD = 3V/5V
–20
80
–40
–60
–80
–100
–120
0.01
0.1 1 10 100
FREQUENCY (MHz)
Figure 12. Off Isolation vs. Frequency
1000
Preliminary Technical Data
0
TA = 25°C
VDD = 3V/5V
–20
–40 SAME
MULTIPLEXER
–60
DIFFERENT
–80 MULTIPLEXER
–100
–120
0.01
0.1 1 10 100
FREQUENCY (MHz)
Figure 13.Crosstalk vs. Frequency
1000
–1
TA = 25°C
–3 VDD = 5V
–5
–7
–9
–11
–13
–15
0.01
0.1 1
10 100
FREQUENCY (MHz)
1000
Figure 14. Bandwidth
0
TA = 25°C
–10 1 CHANNEL
VDD = 3V/5V
–20 NO DECOUPLING CAPACITORS USED
–30
–40
–50
–60
–70
–80
–90
–100
0.0001
0.001
0.01 0.1 1 10
FREQUENCY (MHz)
Figure 15. PSSR vs. Frequency
100 1000
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