MAX4549 Maxim, MAX4549 Datasheet - Page 11

• Manufacturer Part Number: MAX4549
• Description: The MAX4548/MAX4549 serial-interface, programmable, triple 3x2 audio/video crosspoint switches are ideal for multimedia applications
• Manufacturer: Maxim

Figure 2a. Off-Isolation
Figure 2b. Crosstalk
GENERATOR
GENERATOR
SIGNAL
SIGNAL
V+
V
10nF
IN
10k
R
S
10k
R
2/3
S
Serially Controlled, Triple 3x2 Audio/Video
NO1_
GND
______________________________________________________________________________________
DECODER/
ENCODER
MAX4548
MAX4549
MAX4548
MAX4549
COM1_
COM2_
S_
R
R
L
L
V+/2
V+/2
1 F
ANALYZER
ANALYZER
10k
10k
10k
V
OUT
The MAX4548/MAX4549 are serial-interface, program-
mable, triple 3x2 audio/video crosspoint switches. Each
device contains two crosspoint switches with a com-
mon bypass network and another crosspoint switch
with its own bypass network. The switches are indepen-
dently controlled through the on-chip serial interface.
The MAX4548 uses a 2-wire I
munications protocol, while the MAX4549 uses a 3-wire
SPI/QSPI/MICROWIRE-compatible serial communica-
tions protocol.
These ICs include twelve selectable bias-resistor net-
works (one for each input) for use with AC-coupled
input signals. They operate from a single supply of
+2.7V to +5.5V and are optimized for use in the audio
frequency range to 20kHz and at video frequencies to
10MHz. They feature 35Ω max on-resistance, 7Ω on-
resistance matching between channels, 5Ω on-resis-
tance flatness, and as low as 0.07% total harmonic
distortion.
Figure 2c. All-Hostile Crosstalk
R
GENERATOR
S
SIGNAL
Crosspoint Switches
V
IN
10k
Detailed Description
MAX4548
MAX4549
2
C-compatible serial com-
10k
V
OUT
10k
11