TDA1575 datasheet(5/16 Pages) PHILIPS

Il numero della parte	TDA1575

Spiegazioni elettronici	FM front end circuit for CENELEC EN 55020 applications

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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5 / 16 page

April 1993

5

Philips Semiconductors

Preliminary speciﬁcation

FM front end circuit for

CENELEC EN 55020 applications

TDA1575T

CHARACTERISTICS

VP = 8.5 V and Tamb = +25°C, measurements taken in Fig.1 with f0 = 98 MHz (EMF1) unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

VP

supply voltage (pin 13)

7

8.5

10

V

IP

supply current

without mixer

16

23

30

mA

VREF

reference voltage (pin 5)

I5 ≤ 3 mA

3.9

4.2

4.4

V

Mixer

I14+15

mixer supply current (pins 14 and 15)

−

4

−

mA

V1,2

DC voltage input (pins 1 and 2)

−

1

−

V

Z1,2

input impedance

−

14

−Ω

V14,15

DC output voltage (pins 14 and 15)

4

−

10

V

C14,15

output capacitance

−

13

−

pF

GP

conversion power gain

note 1

−

14

−

dB

EMF1IP3

3rd order intercept point

−

115

−

dB

µV

NF

noise ﬁgure

−

9

−

dB

total noise ﬁgure

including

transforming network

−

11

−

dB

Oscillator

V7,8

DC input voltage (pins 7 and 8)

−

1.3

−

V

V6

DC output voltage (pin 6)

−

2.0

−

V

∆f

residual FM at pin 6

f = 300 to 15000 Hz;

de-emphasis 50

µs

−

2.2

−

Hz

Oscillator buffered output (pin 9)

VO

output signal (RMS value)

RL= 500 Ω; CL= 2 pF

75

−−

mV

V9

DC output voltage

−

6

−

V

R9

DC output resistor

−

950

−Ω

THD

total harmonic distortion

−−15

−

dBC

fS

spurious frequencies

EMF1 = 2 V;

RS = 50 Ω;

fOSC = 108.7 MHz

−−37

−

dBC

Automatic gain control (AGC)

R3

input resistance (pin 3)

−

4

−

k

Ω

C3

input capacitance

−

3

−

pF

V16

AGC output swing (DC)

Figs 3 and 4

0.5

−

VP − 0.3 V

I16

output current at I3 = 0

V16 = 1⁄2VP

−25

−50

−150

µA

output current at U3 = 2 V

V16 = 7 to 10 V

2

−

5mA

EMF2

threshold (RMS value)

I16 = 0; V16 = 1⁄2VP;

Figs 4 and 5

−

17

−

mV

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