Electrical specifications

TDA7505

16/38

4.3

Electrical characteristics

4.3.1

Recommended DC operating conditions

4.3.2

Power consumption

4.3.3

Oscillator characteristics

Table 5.

Recommended DC operating conditions

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

VDD1V8

Digital supply voltage

1.7

1.8

1.9

V

VDD3V3

I/O supply voltage

3.15

3.3

3.49

V

AVDD

Analog supply voltage

3.15

3.3

3.49

V

DACVDD

D/A supply voltage

3.15

3.3

3.49

V

ADCVDD

A/D supply voltage

3.15

3.3

3.49

V

Table 6.

Power consumption

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Maximum current

Digital power supply @ 1.8V

195

mA

Maximum current

Digital IO power supply @ 3.3V

6

mA

Maximum current

DAC analog power supply @ 3.3V

22

mA

Maximum current

ADC analog power supply @ 3.3V

43

mA

Table 7.

Oscillator characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

8.55

MHz

External oscillator frequency

75

MHz

External oscillator frequency

80

MHz

1.

RDS works only with 8.55Mhz quartz or alternative with 74.1MHz applied externally on XTI pin.

2.

An alternative clock input (pin CLKIN) can be used for PLL to adjust the audio sampling rate. RDS can work in parallel with

the 8.55MHz quartz.