MAX9597CTI+T Maxim Integrated Products, MAX9597CTI+T Datasheet - Page 24

• Manufacturer Part Number: MAX9597CTI+T
• Description: IC AUD/VID INTERACE 28TQFN-EP
• Manufacturer: Maxim Integrated Products
• Type: Audio/Video Interfacer

Specifications of MAX9597CTI+T

• Applications: DVD, Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Power Audio/Video Interface
for Single SCART Connectors
Figure 17. Differential to Single-Ended Conversion Circuit for Voltage Mode, Differential Audio Signals
The input amplifier of the audio section can be utilized
for stand-alone operational amplifier applications by
configuring ENC_INR+ and ENC_INL+ input as the
noninverting input, ENC_INR- and ENC_INL- input as
the
ENC_INLOUT output as the output of the stand-alone
operational amplifier. The gain-bandwidth product of
the amplifier is 7MHz (typ).
V
in an application that does not require the slow-
switch output signal. See Figure 18.
The MAX9597 features single 3.3V and 12V supply
operation and requires no negative supply. The 12V
supply V
For pin V
it as possible. Connect V
24
12
should be left unconnected if the MAX9597 is used
______________________________________________________________________________________
inverting
12
12
, place a 0.1µF bypass capacitor as close to
is for the SCART slow-switching function.
Applications That Do Not Need
input
Power-Supply Bypassing
Stand-Alone Operational
AUD
the Slow-Switch Signal
and
Amplifier Applications
RIGHT_P
RIGHT_N
STB CHIP
LEFT_N
LEFT_P
to 3.3V and bypass with a
ENC_INROUT
R1
R2
R1
R1
R2
and
C1
10µF electrolytic capacitor in parallel with a 0.1µF
ceramic capacitor to audio ground. Bypass V
GND with a 0.1µF ceramic capacitor.
The MAX9597 was designed to operate from noisy digi-
tal supplies. The high video PSRR (47dB at 100kHz)
allows the MAX9597 to reject the noise from the digital
power supplies (see the Typical Operating Character-
istics ). If the digital power supply is very noisy and
stripes appear on the television screen, increase the
supply bypass capacitance. An additional, smaller
capacitor in parallel with the main bypass capacitor
can reduce digital supply noise because the smaller
capacitor has lower equivalent series resistance (ESR)
and equivalent series inductance (ESL).
For optimal performance, use controlled-impedance
traces for video signal paths and place input termina-
tion resistors and output back-termination resistors
close to the MAX9597. Avoid routing video traces par-
allel to high-speed data lines.
R2
R2
R2
C1
C2
C2
ENC_INR-
ENC_INROUT
ENC_INL+
ENC_INL-
ENC_INLOUT
ENC_INR+
MAX9597
Layout and Grounding
Using a Digital Supply
VID
to