ADV3221 Datasheet, PDF (1/20 Pages) Analog Devices – 800 MHz, 4:1 Analog Multiplexer

800 MHz, 4:1 Analog Multiplexer
ADV3221/ADV3222
FEATURES
Excellent ac performance
−3 dB bandwidth
800 MHz (200 mV p-p)
750 MHz (2 V p-p)
Slew rate: 2400 V/μs
Low power: 75 mW, VS = ±5 V
Excellent video performance
100 MHz, 0.1 dB gain flatness
0.02% differential gain error/0.02° differential phase error
(RL = 150 Ω)
ADV3221 is a pin-for-pin upgrade to the HA4344
Gain = +1 (ADV3221) or gain = +2 (ADV3222)
Low all hostile crosstalk of −85 dB @ 5 MHz, and
−58 dB @ 100 MHz
Latched control lines for synchronous switching
High impedance output disable allows connection of
multiple devices without loading the output bus
16-lead SOIC
APPLICATIONS
Routing of high speed signals including
Video (NTSC, PAL, S, SECAM, YUV, RGB)
Compressed video (MPEG, wavelet)
3-level digital video (HDB3)
Data communications
Telecommunications
GENERAL DESCRIPTION
The ADV3221 and ADV3222 are high speed, high slew rate,
buffered 4:1 analog multiplexers. They offer a −3 dB signal
bandwidth greater than 800 MHz and channel switch times
of less than 20 ns with 1% settling. With lower than −58 dB of
crosstalk and −67 dB isolation (at 100 MHz), the ADV3221 and
ADV3222 are useful in many high speed applications. The diffe-
rential gain error of less than 0.02% and differential phase error
of less than 0.02°, together with 0.1 dB gain flatness out to 100 MHz
while driving a 75 Ω back terminated load, make the ADV3221
and ADV3222 ideal for all types of signal switching.
The ADV3221/ADV3222 include an output buffer that can be
placed into a high impedance state. This allows multiple outputs
FUNCTIONAL BLOCK DIAGRAM
CS
DQ
DQ
ENABLE
LATCH
LATCH
IN0
A0
DQ
DQ
IN1
LATCH
LATCH
IN2
IN3
G = +1
(G = +2)
OUT
A1
DQ
DQ
LATCH
LATCH
CK1
CK2
100kΩ
100kΩ
Figure 1.
to be connected together for cascading stages without the off
channels loading the output bus. The ADV3221 has a gain of
+1, and the ADV3222 has a gain of +2; they both operate on ±5 V
supplies while consuming less than 7.5 mA of idle current. The
channel switching is performed via latched control lines, allowing
synchronous updating in a multiple ADV3221/ADV3222 envi-
ronment.
The ADV3221/ADV3222 are offered in a 16-lead SOIC package
and are available over the extended industrial temperature range of
−40°C to +85°C.
Rev. 0
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