TDA9850

更新时间： 2024-01-29 00:56:21

品牌	Logo	应用领域
恩智浦 - NXP		解码器
页数	文件大小	规格书
32页	207K
描述
I2C-bus controlled BTSC stereo/SAP decoder

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数据手册

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TDA9850 数据手册

Philips Semiconductors

Preliminary speciﬁcation

I²C-bus controlled BTSC stereo/SAP decoder

TDA9850

FEATURES

• Quasi alignment-free application due to automatic

adjustment of channel separation via I²C-bus

• Dbx noise reduction circuit

• Dbx decoded stereo, Second Audio Program (SAP) or

mono selectable at the AF outputs

GENERAL DESCRIPTION

• Additional SAP output without dbx, including

de-emphasis

The TDA9850 is a bipolar-integrated BTSC stereo/SAP

decoder (I²C-bus controlled) for application in TV sets,

VCRs and multimedia.

• High integration level with automatically tuned

integrated filters

• Input level adjustment I²C-bus controlled

• Alignment-free SAP processing

• Stereo pilot PLL circuit with ceramic resonator,

automatic adjustment procedure for stereo channel

separation, two pilot thresholds selectable via I²C-bus

• Automatic pilot cancellation

• Composite input noise detector with I²C-bus selectable

thresholds for stereo and SAP off

• I²C-bus transceiver.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

supply voltage

supply current

CONDITIONS

MIN.

8.5

TYP. MAX. UNIT

V_CC

I_CC

9.5

−

V_comp(rms)input signal voltage (RMS value) 100% modulation L + R; f_i= 300 Hz −

V_oR(rms)output signal voltage (RMS value) 100% modulation L + R; f_i= 300 Hz −

V_oL(rms)

250

500

;

−

G_LA

input level adjustment control

stereo channel separation

total harmonic distortion L + R

signal-to-noise ratio

−3.5

−

+4.0

−

α_cs

f_L= 300 Hz; f_R= 3 kHz

f_i= 1 kHz

0.2

THD_L,R

S/N

−

500 mV (RMS) mono output signal

CCIR noise weighting filter

(peak value)

−

DIN noise weighting filter

(RMS value)

dBA

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA9850

SDIP32

SO32

plastic shrink dual in-line package; 32 leads (400 mil)

plastic small outline package; 32 leads; body width 7.5 mm

SOT232-1

SOT287-1

TDA9850T

1995 Jun 19

123 4 5 6 7...32

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