ADG794 Datasheet, PDF (1/12 Pages) Analog Devices – Low Voltage, 300 MHz Quad 2:1 Mux Analog HDTV Audio/Video Switch

Low Voltage, 300 MHz Quad 2:1 Mux Analog
HDTV Audio/Video Switch
ADG794
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
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.
FUNCTIONAL BLOCK DIAGRAM
ADG794
S1A
D1
S1B
S2A
D2
S2B
S3A
D3
S3B
S4A
D4
S4B
1 OF 2
DECODER
EN
IN
Figure 1.
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.
Rev. 0
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