TDA3845 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

TDA3845

Quasi split-sound circuit and AM demodulator

Philips Electronics 

Philips Semiconductors

Quasi split-sound circuit and AM

demodulator

Objective specification

TDA3845; TDA3845T

SYMBOL

PARAMETER

AF signal performance (note 8)

(S +W)/W black picture

(S +W)/W 2T/20T pulses with white bars

(S +W)/W 6 kHz sinewave

(black-to-white modulation)

(S +W)/W 250 kHz square wave

(black-to-white modulation)

AM mode (standard L) note 9

S/N weighted in accordance with CCIR 468-3

V6(RMS)

BAF

THD

AF output signal (RMS value)

AF bandwidth

total harmonic distortion

(S +W)/W signal-to-weighted-noise ratio

R6

V6

I6(peak)

output resistance

DC potential

permissible AC output current

(peak value)

I6

permissible DC output current

Standard switch (note 4)

V7

peak signal AGC (FM mode)

V7

or switch open-circuit

V7

mean signal AGC (AM mode)

I7

switch current

at 0 V

at VP1

at VP2

Ripple rejection (note 13)

AM/AF signal

αRR

voltage ripple on VP/

voltage ripple on output signal

FM phase noise

∆f(RMS) intercarrier signal

CONDITIONS

MIN. TYP. MAX. UNIT

60/58 68/64 −

dB

57/55 60/58 −

dB

53/51 57/55 −

dB

50/44 56/50 −

dB

−3 dB; note 12

note 10

note 7

440

550

0.02 −

−

1

50

56

−

200

−

1.8

−

−

−

−

660

mV

120

kHz

2

%

−

dB

−

Ω

−

V

±0.3 mA

−1

mA

VP1 used

VP2 used

1.8

−

1.8

−

−

−

−

−

−

−

via a 2.2 kΩ series resistor −

−

VP1

V

5.5

V

0.8

V

−200 µA

10

µA

2.5

mA

30

40

−

dB

−

10

20

Hz

January 1993

6

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