TDA9819

TDA9819 - Multistandard vision and sound-IF PLL with DVB-IF processing

DVB functions

• Gain controlled IF-amplifier

• Mixer for DVB-IF

• VCO for QAM carrier recovery

• External VCO control for DVB

• Internal and external AGC for DVB

• DVB output level adjust via AGC adjust

• High level DVB operational output amplifier.

GENERAL DESCRIPTION

The TDA9819 is an integrated circuit for multistandard

vision and sound-IF signal processing with single

reference PLL demodulator combined with the signal

stages for DVB-IF processing. 

FEATURES

• 5 V supply voltage

• Applicable for IF frequencies of 38.9 MHz and

45.75 MHz

• Two switched VIF inputs, gain controlled wide band

VIF-amplifier (AC-coupled)

• True synchronous demodulation with active carrier

regeneration (very linear demodulation, good

intermodulation figures, reduced harmonics and

excellent pulse response)

• VCO frequency switchable between TV (M or BG/L)

IF-picture carrier and Digital Video Broadcast (DVB)

frequency

• Separate video amplifier for sound trap buffering with

high video bandwidth

• VIF AGC detector for gain control, operating as peak

sync detector for M and B/G and peak white detector for

L; controlled reaction time for L

• Tuner AGC with adjustable takeover point (TOP)

• AFC detector without extra reference circuit

• SIF input for single reference QSS mode

(PLL controlled); SIF AGC detector for gain controlled

SIF amplifier; single reference QSS mixer able to

operate in high performance single reference QSS

mode

• AC-coupled limiter amplifier for sound intercarrier signal

• Alignment-free FM-PLL demodulator with high linearity

• AM demodulator without extra reference circuit

• Stabilizer circuit for ripple rejection and to achieve

constant output signals.

由于客户采购批量与样品的价格不同，网上无法统一注明，请您把采购型号通过邮件或客服QQ：2850151585 发给我们，也可以拨打明佳达国内销售部电话：0755-83957301，由客服人员为您报价；有时元件厂商价格稍许变动，本公司未能及时调整，如您觉得售价稍高，请与我们说明并适当议价，感谢支持!

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 PAYMENTS:

We support the following payment methods:

 1. Paypal

 2. Western Union 

 3. Bank Wire (TT)

 4. MoneyGram

Shipping:

1. MJD needs about 3 BUSINESS DAY to handle the order after received payment. after receiving your payment. Otherwise, we will state it in the invoice in advance.

2. MJD can Ship via your shipping account (DHL / FEDEX / UPS / TNT or others) as your instruction. Or Ship via our shipping account (We have a very good relationship with DHL and FEDEX with very special freight).

3. Regarding the declared value on the package for customs clearance, we are pleased to follow

your wishes, just feel free to inform us when ordering.

4. Any import fees or charges are the buyer's responsibility.

REFUNDS & RETURN:

We offer a warranty on all items that we sold. Item will be tested before ship,it will be in good condition,if there are some problems with the item,feel free to contact us.Please Email us to notify a defective item. Unless otherwise specified, this item comes with 30 days warranty from the shipment date.

You must contact us before returning any product. All returns must be made within 30 days from this shipment date.Return must be in new condition(the SAME CONDITION as it was sent to you)

Because of wholesale price is different from sample price, our website can not state. Please send your required part number via email Sales@hkmjd.com or skype id mjdccm898 to us.  As well as welcome you call us : 0755-83957301  We will send offer for you;  Sometimes manufacturer's price is unstable, so we don't adjust price in time. if you feel price is a little high for you, just feel free to contact us for consultation. Thank you for your support ！