Electrical specifications

TDA7703

14/32

Rev 1

3.4

Electrical characteristics

3.4.1

FM - section

Table 6.

FM - section

Symbol

Parameter

Test condition

Min

Typ

Max

Units

FM IMR mixer

Input resistance

90

130

170

k

Ω

IIP3

121

dBµV

FM AGC

RFAGC-Thr

RFAGC threshold, referred to

mixer input;

RF level

min setting

85

dBµV

max setting

91

Threshold steps

2

dB

Threshold error

-1.5

1.5

dB

Threshold temperature drift

0.016

dB/K

IFAGC-Thr

IFAGC threshold, referred to

mixer input; at tuned

frequency

RF level

min setting

77

dBµV

max setting

81

Threshold steps

2

dB

Threshold error

-1.5

1.5

dB

Threshold temperature drift

0.016

dB/K

Pin diode source current

12

mA

Pin diode sink current

3

20

µA

Pin diode source current in

constant current mode

see note(1)

0.4

mA

1.

The current is generated by a PTAT (Proportional To Absolute Temperature) source, and has therefore a temperature

dependency described by:

ΔI/Io = ΔT/To, with Io being the current at ambient temperature (25 °C) and To the ambient

temperature (25°C) expressed in Kelvin, that is 298 K.