TDA7540B datasheet(22/75 Pages) STMICROELECTRONICS

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Electrical specifications

TDA7540B

22/75

3.2.5

PLL section

Table 8.

Electrical characteristics

(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,

fRF = 98MHz, dev. = 40kHz, fMOD = 1kHz, fXtal = 10.25MHz, in application circuit, unless

otherwise specified).

Item

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output of Tuning Voltages (TV1,TV2)

36.1

VOUT

Output voltage

TVO

0.5

VCC3-0.5

36.2

ROUT

Output impedance

TVMODE=0

Ω

36.3

ROUT

Output impedance

TVMODE=1

Ω

Xtal Reference Oscillator

37.1

fLO

Reference frequency

CLoad = 15pF

10.25

MHz

37.2

CStep

Min. cap step

XTAL

0.75

37.3

Cmax

Max. cap

XTAL

23.25

37.4

∆f/f

Deviation versus VCC2

∆VCC2 = 1V

1.5

ppm/V

37.5

∆f/f

Deviation versus temp

-40°C < T < +85°C

0.2

ppm/K

Loop Filter Input/Output

38.1

-IIN

Input leakage current

VIN = GND, PDOUT = Tristate

-0.1

0.1

µA

38.2

IIN

Input leakage current

VIN = VREF1

PDOUT = Tristate

-0.1

0.1

µA

38.3

VOL

Output voltage Low

IOUT = -0.2mA

0.05

0.5

38.4

VOH

Output voltage High

IOUT = 0.2mA

VCC3-

0.5

VCC3-

0.05

38.5

IOUT

Output current, sink

VOUT = 1V to VCC3-1V

38.6

IOUT

Output current, source

VOUT = 1V to VCC3-1V

-10

Voltage Controlled Oscillator (VCO)

39.1

fVCOmin

Minimum VCO frequency

MHz

39.2

fVCOmax

Maximum VCO frequency

260

MHz

39.3

C/N

Carrier to Noise

fVCO= 200MHz, ∆f=1KHz,

B=1Hz, closed loop

dBc

SSTOP, INLOCK, ISSSTATUS Outputs (Open Collector)

40.1

Output voltage low

I = -200µA0.2

0.5

40.2

Output voltage high

40.3

-I

Output leakage current

V = 5V

-0.1

0.1

µA

40.4

Output current, sink

V = 0.5V-5V

Switching Outputs S1, S2 (Open Collector SMODE=1)

41.1

Output voltage low

I = -5mA

0.2

0.5

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