TDA7580 データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

TDA7580

FM/AM digital IF sampling processor

STMicroelectronics 

Block diagram and electrical specifications

TDA7580

Note:

Table 10.

Symbol

Oscillator characteristics

(Tj =-40°C to 125°C; VDD =1.7V to 1.9V, VDD3 = 3.15V to 3.45V)

Parameter

Test condition

Min. Typ. Max. Unit

FOSCFM Oscillator frequency (XTI/XTO)

74.1

MHz

The accuracy depends on the quartz frequency precision: high stability oscillator

Table 11. Crystal characteristics for 1 and 2 chip load

Parameter name

Parameter value

1 chip load

2 chips load

Temperature range

-55°C÷125°C

-55°C÷125°C

Adjustment tolerance (@ 25°C ± 3°C)

± 30 ppm

± 30 ppm

Frequency stability (-20°C÷+70°C)

± 50 ppm

± 50 ppm

Aging @ 25°C

5 ppm/year

5 ppm/year

Shunt (static) capacitance [Co]

<5pF

<5pF

Motional capacitance

1fF ± 30%

1fF ± 30%

Mode of oscillation

AT-3rd

AT-3rd

Resonance resistance

< 75 ohm

< 45 ohm

Capacitive load for oscillation frequency =

74.1MHz

10pF

12pF

Table 12. External clock signal on XTI (In case the device is driven by an external clock

through the XTI pin, the characteristics reported in this table have to be met)

Parameter name

Parameter value

Min

Typ

Max

Unit

Clock frequency

74.10

MHz

Frequency stability (-20°C÷+70°C)

-50

50

ppm

Clock jitter

Start up time

Clock level (sine wave) (1)

220

Clock level (square wave) (1)

0.50

10

5

640

1.80

ps rms

ms

mV rms

V p-p

Clock duty cycle (square wave)

45

Clock rise / fall time (square wave) (1)

55

%

500

ps

1. specified @ XTI pin of TDA7580

16/39

Share Link: