cxd2817r Sony Electronics, cxd2817r Datasheet

cxd2817r

Manufacturer Part Number

cxd2817r

Description

Cable And Terrestrial Tv Digital Broadcast Demodulator Ic Achieves The Industry?s Top Class Performance

Manufacturer

Sony Electronics

Datasheet

1.CXD2817R.pdf (2 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

CXD2817R

Manufacturer:

SONY

Quantity:

1 638

Company:

Meier Automation Equipment Co., Limited

Part Number:

CXD2817R

Manufacturer:

SONY/索尼

Quantity:

20 000

Current page: 1 of 2
Download datasheet (246Kb)

The CXD2817R is a multi-format demodulator

IC that supports both DVB-T (the terrestrial

digital broadcast standard) and DVB-C (the

digital cable broadcast standard). While Sony

led the industry in developing the first device

that integrated both DVB-T and DVB-C

demodulation functions on a single chip, Sony

has achieved both significant performance

improvements and added functionality in

the CXD2817R. Figure 1 shows the block

diagram of the CXD2817R. It is provided in a

7 × 7 mm

The CXD2817R incorporates demodulating

algorithms that are highly resistant to

multipath interference and can handle a

variety of situations, including the transition

The newly-developed Sony CXD2817R is a multi-format demodulator IC

that supports both DVB-T (Digital Video Broadcast - Terrestrial) and DVB-C (Digital Video Broadcast - Cable).

This IC achieves, in a single chip, both space savings and high performance.

The CXD2817R receives an IF signal from the tuner and provides a demodulated output in the TS format. It conforms to

both the ETSI EN 300 744 (terrestrial digital broadcasting) and ETSI EN 300 429 (digital cable broadcasting) standards.

CXD2817R

■ Implements both DVB-T and DVB-C

■ Demodulating algorithms that

■ I m p r o v e d a d j a c e n t c h a n n e l

■ Extensive set of built-in functions,

■ Supports both normal IF and low-

■ Low power consumption

Implements both DVB-T and DVB-C

Demodulation in a Single Chip

Demodulating Algorithms

that are Highly Resistant to

Multipath Interference

demodulation in a single chip

are highly resistant to multipath

interference

interference rejection

including automatic control

functions

IF tuners

DVB-T reception: 115 mW (Typ.)

DVB-C reception: 105 mW (Typ.)

48-pin LQFP package.

Cable and Terrestrial TV Digital

Broadcast Demodulator IC Achieves the

Industry‘s Top Class Performance

from the cessation of analog terrestrial

broadcasting to digital broadcasting and

the wide range of multipath environments

expected due to the changes in the broadcast

waveform environment due to the start of

DVB-T2 broadcasting. In particular, the

CXD2817R is extremely resistant even to

multipath that crosses over a guard interval,

which until now has been thought to be difficult

to handle, and it can be applied flexibly to SFN

(Single-Frequency Network) broadcasting,

which is likely to be more widely deployed in

future. (See figure 2.)

The CXD2817R prevents aliasing of adjacent

channel signals into the desired band due to

the sampling theorem and A/D conversion

by using a higher A/D converter sampling

frequency than existing models. This has

improved the adjacent channel interference

rejection characteristics. (See figure 3.) Not

only the CNR, which is a basic characteristic,

but also the impulse noise resistance, which is

expected to be standardized in the future, and

the CCI (co-channel interference) resistance

have been significantly improved.

The CXD2817R also provides an automatic

recovery function that performs demodulation

synchronization control in the IC itself and

functions that support automatic detection

of spectrum inversions for use in each of

the DVB-T and DVB-C modes. These make

software development even easier. The

CXD2817R also makes even more accurate

monitoring of the received signal strength

possible by adding a 10-bit A/D converter for

signal strength monitoring.

Improved Adjacent Channel

Interference Rejection

Extensive Set of Built-in

Functions, Including Automatic

Control Functions

The CXD2817R supports reception using

either a normal IF (DVB-T: 36.166 MHz,

DVB-C: 36.125 MHz) or a low-IF (about 5

MHz). It can also flexibly support a wide

variety of output formats, including TS output

as well as both serial and parallel outputs.

Since register settings and other aspects are

optimized assuming use with a Sony silicon

tuner IC, it can be used in end products with

only a minimal number of register settings.

In combination with its high functionality,

the CXD2817R also supports low power

consumption applications. In particular, it

achieves the low power of 115 mW (typ.) in

DVB-T mode and 105 mW (typ.) in DVB-C

mode. Furthermore, power consumption can

be reduced to under 15 mW in sleep mode, in

which only the tuner control functions remain

active, and to under 0.15 mW in shutdown

mode, in which the crystal oscillator is

stopped.

Support for a Wide Variety of

Interfaces

Low Power Consumption

In developing this device, we took great

pains to assure that the great ideas of the

development team would actually lead

to improved user satisfaction. Thanks to

the cooperation of both our customers

and the related divisions within Sony, we

were able to establish both the "needs"

and the "seeds", and this resulted in

what is, I think, a truly great IC. I am

looking forward to working with everyone

who has read this article to aim for the

creation of even better televisions.

Related parts for cxd2817r

cxd2817r Summary of contents

Page 1

... This IC achieves single chip, both space savings and high performance. The CXD2817R receives an IF signal from the tuner and provides a demodulated output in the TS format. It conforms to both the ETSI EN 300 744 (terrestrial digital broadcasting) and ETSI EN 300 429 (digital cable broadcasting) standards. ...

Page 2

... TASK_3_23 Immunity to "Analog" Signals in Other Channels fs/2 CXD2817R (sampling frequency MHz) Since fs/2 is 20.5 MHz, the adjacent waveforms are sampled correctly by the A/D converter result, adjacent waveforms are not aliased into the desired band. The adjacent waveforms are excluded in the signal after conversion to a digital signal ...

Related keywords

cxd2817r datasheet
cxd2817r data sheet
cxd2817r pdf datasheet
cxd2817r component
cxd2817r part
cxd2817r distributor
cxd2817r RoHS
cxd2817r datasheet download