SI2185-A10-GM Silicon Laboratories Inc, SI2185-A10-GM Datasheet

SI2185-A10-GM

Manufacturer Part Number

SI2185-A10-GM

Description

Manufacturer

Silicon Laboratories Inc

Datasheet

1.SI2185-A10-GM.pdf (2 pages)

Specifications of SI2185-A10-GM

Lead_time

Pack_quantity

260

Comm_code

85423990

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Description

The Si2185 hybrid TV receiver integrates a complete

hybrid tuner, a DVB-T/C digital demodulator, and an analog

TV demodulator supporting all worldwide analog TV

standards into a single, monolithic, CMOS mixed-signal IC.

Leveraging Silicon Labs' proven 3rd-generation digital

low-IF tuner architecture, the Si2185 delivers superior ATV

picture quality and a higher number of received channels in

real-world crowded spectrum conditions without the need

for external LNAs, tracking filters, or SAW filters.

An enhanced version of the proven DVB-T/C demodulator

technology

incorporated

performance under a wide variety of field conditions. Both

the analog and digital demodulators use sophisticated

on-chip algorithms to ensure optimal reception even under

difficult transmission conditions. In addition, the Si2185

offers on-chip Blindscan and Blindlock scanning algorithms

for DVB-C as well as DSP-assisted DVB-T fast channel

scanning.

By combining hybrid tuner and demodulator functions in a

single device, the Si2185 enables a full TV receiver

solution in a very small PCB footprint and with minimal

external components. The Si2185 contains an on-chip

crystal oscillator and only requires the connection of a

standard 24 MHz crystal or a reference clock. For

dual-receiver applications, the primary Si2185 can provide

a reference clock on its XOUT pin directly to the XTAL_I pin

of the secondary Si2185, thus saving the cost of one

crystal. The Si2185 programmable Transport Stream

interface provides both serial and parallel modes and is

fully compatible with all MPEG decoders and conditional

access modules (CI/CI+) to support any customer

application.

Hybrid TV Receiver

ANTENNA

VDD_H, VDD_IO (3.3 V)

VDD_L, VDD_D (1.8 V)

INPUT

VDD_S (3.3 or 5 V)

Balun

RF_IN

RF_IP

from

into

Si2170/1/2

DC/DC

LNA

Silicon

AGC

the

Si2185

Labs'

SYNTH

FREQ

0 / 90

Si2165

deliver

24 MHz

PGA

XOSC

AGC

has

superior

ADC

been

Hybrid DVB-T/C and Analog TV Receiver

DIGITAL

DEMOD

FILTER

LOW-IF

DSP

ATV

Features

Applications

DIGITAL

Hybrid Analog and Digital TV tuner

Analog TV (ATV) demodulator

Digital TV (DTV) demodulator and FEC decoder

Supports all DVB-T modes

Supports DVB-C symbol rates from 1 to 7.2 MBaud

Best-in-class real-world reception

Compliance with NorDig 2.1, D-Book, C-Book, EN55020

specifications

Highly integrated, lowest BOM

Customizable channel select filters

Flexible output interface to AV processor

Single die in standard CMOS process

3.3 and 1.8 V power supplies

7x7 mm, 48-pin QFN package, RoHS compliant

iDTV (Integrated Digital TV)

Hybrid PVR and DVD recorder

Hybrid full-NIM

Hybrid portable TV

Hybrid PC-TV card and USB dongle

Hybrid terrestrial or cable STB

I/Q

42–870 MHz frequency range

No alignment, tuning or calibration

PAL/SECAM, NTSC

DVB-T (ETSI EN 300 744)

DVB-C (ETSI EN 300 429)

ITU J.83 Annex A/C

Advanced echo equalizer

No SAW filters required

Integrated LNAs and complete tracking filters

CVBS + SIF/AF

Serial or parallel TS output

DVB-T/C

DEMOD

ATV DEMOD

EQUAL-

IZER

DSP

INTERFACE

CONTROL

FEC

TS_SYNC

TS_VAL

TS_ERR

TS_CLK

TS_DATA

[0..7]

CVBS

SIF/AF

SDA

SCL

INTB

Si2185

09.06.11

SoC

A/V

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