TDA7705_10 Datasheet, PDF (17/42 Pages) STMicroelectronics – Highly integrated tuner for AM/FM car radio

TDA7705
Electrical specifications
3.4
Electrical characteristics
V_CC = 4.7 V to 5.25 V; T_amb = -40 °C to +85 °C; unless otherwise specified.
3.4.1 FM - section
Table 7. FM - section
Symbol
Parameter
Test condition
Min
Typ
Max Units
FM IMR mixer
R_in
Input resistance
V_noise Input noise voltage
IIP3
3^rd order intercept point
FM AGC
-
Mix 1, R_source = 1.5 kΩ,
noiseless
Mix 2, R_source = 800 Ω,
noiseless
Mix 1
up to V_in/tone = 90 dBµV
Mix 2
up to V_in/tone = 85 dBµV
90
130
170
kΩ
-
2.5
3.1
nV/√Hz
-
2
2.5
122
125
118
121
dBµV
-
dBµV
RFAGC threshold, referred to
mixer input;
RF level
RFAGC-Thr
Mix 1, min setting
Mix 1, max setting
Mix 2, min setting
Mix 2, max setting
-
87
-
-
93
-
dBµV
-
85
-
-
91
-
Threshold steps
-
-
2
-
dB
Threshold error
Threshold temperature drift
@ T_amb = 27 °C
-1.5
1.5
dB
-
0.016
-
dB/K
IFAGC-Thr
IFAGC threshold, referred to
mixer input; at tuned
frequency
RF level
Mix 1, min setting
Mix 1, max setting
Mix 2, min setting
Mix 2, max setting
-
81
-
-
85
-
dBµV
-
77
-
-
81
-
Threshold steps
-
-
2
-
dB
Threshold error
@ T_amb = 27 °C
-1.5
1.5
dB
Threshold temperature drift -
0.016
-
dB/K
-
Pin diode source current
@ T_amb = 27 °C; see note⁽¹⁾
12
-
-
mA
-
Pin diode sink current
-
3
-
20
µA
-
Pin diode source current in
constant current mode
@ T_amb = 27 °C; 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.
Doc ID 15938 Rev 8
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