TDA7580(2002) 查看數據表（PDF） - STMicroelectronics

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TDA7580
(Rev.:2002)

FM/AM digital IF sampling processor

STMicroelectronics 

TDA7580

CURRENT CONSUMPTION (continued)

Symbol

Parameter

Test Condition

Min. Typ. Max.

IOSCac Current through VOSC Power

Supply

VDD=1.8V,VDD3=3.3V

with quartz in FM mode

11

14

17

IMTR Current through VMTR Power

VDD=1.8V,VDD3=3.3V

5

Supply

Note: 74.1MHz internal DSP clock, at Tamb = 25°C. Current due to external loads not included.

OSCILLATOR CHARACTERISTICS

Symbol

Parameter

Test Condition

Min. Typ. Max.

FOSCFM Oscillator Frequency (XTI/XTO)

VOSC @ 3.3V

74.1

FOSCAM Oscillator Frequency (XTI/XTO)

VOSC @ 3.3V

74.106

Notes: 1. The accuracy of this figure only depends on the quartz frequency precision: high stability oscillator

Unit

mA

mA

Unit

MHz

MHz

QUARTZ CHARACTERISTICS

Parameter Name

Temperature range

Adjustment tolerance (@ 25°C ± 3°C)

Frequency stability (-20°C ÷ +70°C)

Aging @ 25°C

Shunt (static) capacitance (Co)

Packages (holders)

Mode of oscillation

Resonance resistance (ESR)

Oscillation Frequency (without external load)

Oscillation Frequency (12pF parallel load)

Parameter Value

-55°C ÷ +125°C

+/-20ppm

+/-50ppm

5ppm/year

<6pF

UM-1; HC-52U; HC-35; HC-48U; HC-49U; HC-50U; HC-51U

AT-3rd

<35ohm

≥74108000 Hz

target 74.1MHz

DSP CORE

Symbol

Parameter

FdspMax Maximum DSP clock frequency

Test Condition

At 1.7V Core Power Supply and

125°C junction temperature

Min.

81.5

Typ.

Max.

Unit

MHz

FM STEREO DECODER CHARACTERISTICS

Symbol

Parameter

a_ch Channel Separation

THD Total Harmonic Distortion

(S+N)/N Signal plus Noise to Noise ratio

Test Condition

Min. Typ. Max. Unit

50

dB

0.02

%

80

dB

12/31

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