Low Voltage, CMOS Multimedia Switch
ADG790
Rev. A
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FEATURES
Single-chip audio/video/data switching solution
Wide bandwidth section
Rail-to-rail signal switching capability
Compliant with full speed USB 2.0 signaling (3.6 V p-p)
Compliant with high speed USB 2.0 signaling (400 mV p-p)
Supports USB data rates up to 480 Mbps
550 MHz, −3 dB bandwidth
Low R
ON
: 5.9 Ω typical
Excellent matching between channels
Low distortion section
Low R
ON
: 3.9 Ω typical
230 MHz, −3 dB bandwidth (SPDT)
160 MHz, −3 dB bandwidth (4:1 multiplexers)
Single-supply operation: 1.65 V to 3.6 V
Typical power consumption: <0.1 μW
Pb-free packaging: 30-ball WLCSP (3 mm × 2.5 mm)
APPLICATIONS
Cellular phones
PMPs
MP3 players
Audio/video/data/USB switching
FUNCTIONAL BLOCK DIAGRAM
S6B
S6A
D6
DECODER
S6D
S6C
IN3IN2IN1
1
1B
D1
S4A
S4B
D4
S5B
S5A
D5
S5D
S5C
S/D
2
2B
D2
3
3B
D3
GNDV
DD
ADG790
WIDE
BANDWIDTH
SECTION
LOW
DISTORTION
SECTION
6357-001
Figure 1.
GENERAL DESCRIPTION
The ADG790 is a single-chip, CMOS switching solution that
comprises four SPDT switches and two 4:1 multiplexers. The
internal architecture of the device provides two switching
sections, a wide bandwidth section and a low distortion section.
The wide bandwidth section contains three SPDT switches that
exhibit low on resistance with excellent flatness and channel
matching. This, combined with wide bandwidth, makes the
three-SPDT-switch configuration ideal for high frequency
signals, such as full speed (12 Mbps) and high speed (480 Mbps)
USB signals and high resolution video signals.
The low distortion section contains a single SPDT switch and
two 4:1 multiplexers that exhibit very low on resistance and
excellent flatness, making these switches ideal for a wide range
of applications, including low distortion audio applications and
low resolution video (CVBS and S-Video) applications.
When on, all switches conduct equally well in both directions.
When off, all switches block signals up to the supply rails. A
4-wire parallel interface controls the operation of the device
and allows the user to control switches from both sections
simultaneously. This simplifies the design and provides a cost-
effective, single-chip switching solution for portable devices
where multiple signals share a single port connector. The
shutdown (S/D) pin allows all four SPDT switches to be
disabled and forces the 4:1 multiplexers into the S5B and S6B
positions, respectively.
The ADG790 is packaged in a compact, 30-ball WLCSP (6 × 5
ball array) with a total area of 7.5 mm
2
(3 mm × 2.5 mm). This
tiny package size and its low power consumption make the
ADG790 an ideal solution for portable devices.
