TDA7514 Просмотр технического описания (PDF) - STMicroelectronics

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TDA7514

SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

STMicroelectronics 

TDA7514

Table 7. (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VADJMP

Noise rectifier adjustment 00

through Multipath (2)

Signal PEAK in Testmode 01

10

0.3

V/ms

0.5

V/ms

0.7

V/ms

11

0.9

V/ms

AM Noise Blanker

TD

AM delay time

128

µs

fc

Corner frequency of AM

delay filter

4

kHz

AM config

AM configuration

Old mode (signal dependant Noise dependent threshold

threshold)

New mode (fixed threshold),

140

%

STDInGain must be 0.5dB

AM Noise Detector High 0

Pass Frequency

1

10

kHz

20

kHz

fcHP

AM Noise Detector High 0

Pass Filter Order

1

1st order

2nd

order

Suppression Pulse

00

Duration AM Signal

TSAM

HOLDN in Testmode

01

10

1.2

ms

800

µs

1.0

ms

11

640

µs

Notes:

1. All thresholds are measured using a pulse with TR = 2 µs, THIGH= 2 µs and TF = 10 µs. The repetition rate must

not increase the PEAK voltage.

2. By design/characterization functionally guaranteed through dedicated test mode structure

Table 8. Quality Actuators

Symbol

Parameter

Stereo Blend

VsbST

Vsb control voltage for full

stereo

VSBL

VSBL = 2V + (“d” factor) * 3V

d

VSB Control Voltage for Full

Mono

d factor

Test Condition

see below

000

001

010

011

100

101

110

111

Min. Typ. Max.

Unit

5

V

29

%

33

%

38

%

42

%

46

%

50

%

54

%

58

%

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