ADG791A Datasheet, PDF (1/24 Pages) Analog Devices – IC-Compatible, Wide Bandwidth, Quad, 2:1 Multiplexer

I²C-Compatible, Wide Bandwidth,
Quad, 2:1 Multiplexer
ADG791A/ADG791G
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
ESD protection
4 kV human body model (HBM)
200 V machine model (MM)
1 kV field-induced charged device model (FICDM)
APPLICATIONS
S-video RGB/YPbPr video switches
HDTVs
Projection TVs
DVD-R/RW
AV receivers
GENERAL DESCRIPTION
The ADG791A/ADG791G are monolithic CMOS devices
comprising four 2:1 multiplexers/demultiplexers controllable
via a standard I²C serial interface. The CMOS process provides
ultralow power dissipation yet gives 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 ADG791A/ADG791G the ideal switching
solution for a wide range of TV applications including S-video,
RGB, and YPbPr 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 ADG791A/ADG791G switches exhibit break-before-make
switching action. The ADG791G has one general-purpose logic
output pin controlled by the I²C interface that can also be used
to control other non-I²C-compatible devices such as video filters.
The integrated I²C interface provides a large degree of flexibility
in the system design. It has three configurable I²C address pins
FUNCTIONAL BLOCK DIAGRAM
V_DD
GND
V_DD
GND
ADG791A
ADG791G
S1A
S1A
D1
D1
S1B
S1B
S2A
S2A
D2
D2
S2B
S2B
S3A
S3A
D3
D3
S3B
S3B
S4A
S4A
D4
D4
S4B
S4B
I²C SERIAL
INTERFACE
I²C SERIAL
INTERFACE
GPO1
A0 A1 A2 SDA SCL
Figure 1.
A0 A1 A2 SDA SCL
that allow up to eight devices on the same bus. This allows the
user to expand the capability of the device by increasing the size
of the switching array.
The ADG791A/ADG791G operate from a single 3 V or 5 V
supply voltage and is available in a compact 4 mm × 4 mm
body, 24-lead 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, Pb-free LFCSP.
6. ESD protection tested as per ESD association standards:
4 kV HBM (ANSI/ESD STM5.1-2001)
200 V MM (ANSI/ESD STM5.2-1999)
1 kV FICDM (ANSI/ESDSTM5.3.1-1999)
Rev. 0
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