资料介绍
The MAX9471/MAX9472 multipurpose clock generators
are ideal for consumer and communication applications.
The MAX9471/MAX9472 feature two buffered
phase-locked loop (PLL) outputs that can be independently
set from 4MHz to 200MHz. These devices also
provide one (MAX9472) or two (MAX9471) buffered
outputs of the reference clock.
The MAX9471 outputs a set of MPEG/AC3 audio and
video frequencies most commonly used in consumer
applications. The MAX9472 outputs a set of common
audio frequencies. These frequencies are selected
through an I2C† interface (MAX9471) or by setting the
three-level FS pins. The MAX9471/MAX9472 feature a
one-time-programmable (OTP) ROM, allowing one-time
programming of the two PLL outputs.
The MAX9471/MAX9472 include two basic configurations.
In one configuration, the OTP ROM sets PLL1 output
to any frequency between 4MHz to 200MHz, and
the I2C interface (MAX9471) or programmable pins set
the PLL2 output frequency to a set of audio and video
frequencies. In the other configuration, the OTP ROM
sets both PLL1 and PLL2 frequencies to fixed values
between 4MHz to 200MHz. In both cases, the reference
output is available, but the OTP ROM can disable it.
The OTP ROM on the MAX9471/MAX9472 is factory set
based on the customer requirements. Contact the factory
for samples with preferred frequencies.
The devices operate from a 3.3V supply and are specified
over the -40°C to +85°C extended temperature range.
The MAX9471 is available in a 20-pin TQFN package. The
MAX9472 is available in a 14-pin TSSOP package.
Applications
Digital TVs
Communication Systems
Data Networking Systems
Set-Top Boxes
Home Entertainment Centers
Multimedia PCs
are ideal for consumer and communication applications.
The MAX9471/MAX9472 feature two buffered
phase-locked loop (PLL) outputs that can be independently
set from 4MHz to 200MHz. These devices also
provide one (MAX9472) or two (MAX9471) buffered
outputs of the reference clock.
The MAX9471 outputs a set of MPEG/AC3 audio and
video frequencies most commonly used in consumer
applications. The MAX9472 outputs a set of common
audio frequencies. These frequencies are selected
through an I2C† interface (MAX9471) or by setting the
three-level FS pins. The MAX9471/MAX9472 feature a
one-time-programmable (OTP) ROM, allowing one-time
programming of the two PLL outputs.
The MAX9471/MAX9472 include two basic configurations.
In one configuration, the OTP ROM sets PLL1 output
to any frequency between 4MHz to 200MHz, and
the I2C interface (MAX9471) or programmable pins set
the PLL2 output frequency to a set of audio and video
frequencies. In the other configuration, the OTP ROM
sets both PLL1 and PLL2 frequencies to fixed values
between 4MHz to 200MHz. In both cases, the reference
output is available, but the OTP ROM can disable it.
The OTP ROM on the MAX9471/MAX9472 is factory set
based on the customer requirements. Contact the factory
for samples with preferred frequencies.
The devices operate from a 3.3V supply and are specified
over the -40°C to +85°C extended temperature range.
The MAX9471 is available in a 20-pin TQFN package. The
MAX9472 is available in a 14-pin TSSOP package.
Applications
Digital TVs
Communication Systems
Data Networking Systems
Set-Top Boxes
Home Entertainment Centers
Multimedia PCs
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