TDA7514 datasheet(6/74 Pages) STMICROELECTRONICS

6 / 74 page

TDA7514

6/74

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Cift1max

IFT1 Adjustment Capacitor

Maximum

Between MIX1OUT+ and

MIX1OUT-

20.1

Cift1step

IFT1 Adjustment Capacitor

Step

Between MIX1OUT+ and

MIX1OUT-

1.3

RFT Adjustment

Vrftadjmin

RFT Adjustment Minimum

@T6<0:7>=[00000000]

TVIN=3V

0.4

Vrftadjmax

RFT Adjustment Maximum

@ T6<0:7>=[11111111]

TVIN=3V

5.9

Vrftadjstep

RFT Adjustment Step

TVIN=3V,

VRFTadjstep=TVIN/128

VRFT0

@ T6<0:7>=[11000001]

TVIN=3V

Voutmax

Output voltage maximum

VCC-0.4

8.1

Voutmin

Output voltage minimum

0.4

Wide Band RF AGC (input: FMMIXER1in+ and FMMIXER1IN-)

WAGCspL

Lower Threshold Start

(Set 1) (“min” not used)

Level at FMMIXER1IN+

@V12=100mV

IFT1 primary is shorted and is

connected to GND with 56nF

66.8

µV

WAGCspH

Higher Threshold Start

(Set max)

Level at FMMIX1IN+

@V12=100mV

IFT1 primary is shorted and is

connected to GND with 56nF

83.5

µV

Wide Band Keying AGC ( Controlled by FiltSMeter1ms )

WAGCK

AGC Start (Set 1) shift

Shifted level of AGC Starting

point at FMMIX1IN+ when

VSMeter changes from Vkey

to Vkey-450mV

-12

Vkey

Vsmeter at Keyed AGC start

when V12 changes to 90mV

from 100mV (Set 1)

1.71

Narrow Band IF AGC (input: FMMIXEROUT+ and FMMIXER1OUT-)

NAGCspL

Lower Threshold Start (Set 1)

(“min” not used)

Level of IF1 at FMMIX1OUT+

@V12=100mV

90.2

µV

NAGCspH

Higher Threshold Start (Set

max)

Level of IF1 at FMMIX1OUT+

@V12=100mV

WAGC set to max

109

µV

RF AGC Pin Diode Driver Out

Ioutmin

Minimum

AGCOFF

0.1

µA

Ioutmax

Maximum

AGCON; total

@330

@2.2K

10.1

8.8

1.35

Table 3. (continued)

TDA7514 数据表(PDF) 6 Page - STMicroelectronics

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