ADG794
器件描述：Low Voltage, 300 MHz Quad 2:1 Mux Analog HDTV Audio/Video Switch
器件厂商：AD [Analog Devices]
文件大小：354.26KB，共12页
Sponsor by e络盟器件资料摘要：
Low Voltage, 300 MHz Quad 2:1 Mux Analog
HDTV Audio/Video Switch
ADG794
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.
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
registered trademarks 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 www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
FEATURES
Bandwidth: 300 MHz
Low insertion loss and on resistance: 5 Ω typical
On resistance flatness: 0.68 Ω typical
Single 3 V/5 V supply operation
Low quiescent supply current: 1 nA typical
Fast switching times:
tON, 7 ns
tOFF, 5 ns
TTL/CMOS compatible
APPLICATIONS
RGB switches
HDTV
DVD-R
Audio/video switches
FUNCTIONAL BLOCK DIAGRAM
1 OF 2
DECODER
ADG794
EN IN
S1A
S1B
S2A
S2B
S3A
S3B
S4A
S4B
D1
D2
D3
D4
05150-001
Figure 1.
GENERAL DESCRIPTION
The ADG794 is a monolithic CMOS device comprising four
2:1 multiplexer/demultiplexers with high impedance outputs.
The CMOS process provides low power dissipation yet gives
high switching speed and low on resistance. The on resistance
variation is typically less than 1.2 Ω over the input signal range.
The bandwidth of the ADG794 is typically 300 MHz and this,
coupled with low distortion (typically 0.68%), makes the part
suitable for switching analog audio/video signals.
The ADG794 operates from a single 3.3 V/5 V supply and is
TTL logic compatible. The switches are controlled by the logic
inputs IN and EN as shown in Table 4. The EN pin allows the
user to disable all switches.
These switches conduct equally well in both directions when on.
In the off condition, signal levels up to the supplies are blocked.
The ADG794 switches exhibit break-before-make switching
action.
The ADG794 is available in a 16-pin QSOP package.
PRODUCT HIGHLIGHTS
1. Wide bandwidth: 300 MHz.
2. Ultralow power dissipation.
3. Crosstalk is typically −70 dB at 10 MHz.
4. Off isolation is typically −65 dB at 10 MHz.
HDTV Audio/Video Switch
ADG794
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.
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
registered trademarks 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 www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
FEATURES
Bandwidth: 300 MHz
Low insertion loss and on resistance: 5 Ω typical
On resistance flatness: 0.68 Ω typical
Single 3 V/5 V supply operation
Low quiescent supply current: 1 nA typical
Fast switching times:
tON, 7 ns
tOFF, 5 ns
TTL/CMOS compatible
APPLICATIONS
RGB switches
HDTV
DVD-R
Audio/video switches
FUNCTIONAL BLOCK DIAGRAM
1 OF 2
DECODER
ADG794
EN IN
S1A
S1B
S2A
S2B
S3A
S3B
S4A
S4B
D1
D2
D3
D4
05150-001
Figure 1.
GENERAL DESCRIPTION
The ADG794 is a monolithic CMOS device comprising four
2:1 multiplexer/demultiplexers with high impedance outputs.
The CMOS process provides low power dissipation yet gives
high switching speed and low on resistance. The on resistance
variation is typically less than 1.2 Ω over the input signal range.
The bandwidth of the ADG794 is typically 300 MHz and this,
coupled with low distortion (typically 0.68%), makes the part
suitable for switching analog audio/video signals.
The ADG794 operates from a single 3.3 V/5 V supply and is
TTL logic compatible. The switches are controlled by the logic
inputs IN and EN as shown in Table 4. The EN pin allows the
user to disable all switches.
These switches conduct equally well in both directions when on.
In the off condition, signal levels up to the supplies are blocked.
The ADG794 switches exhibit break-before-make switching
action.
The ADG794 is available in a 16-pin QSOP package.
PRODUCT HIGHLIGHTS
1. Wide bandwidth: 300 MHz.
2. Ultralow power dissipation.
3. Crosstalk is typically −70 dB at 10 MHz.
4. Off isolation is typically −65 dB at 10 MHz.