TDA7421N Datasheet, PDF (3/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS

ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
T_amb Operating Temperature Range
T_stg
Storage Temperature Range
V_CC
Analog Supply Voltages (PLL, RF, IF1, IF2, OSC)
V_DD
Digital Supply Voltage
TDA7421N
Value
Unit
-40 to 85
°C
-55 to 150
°C
10.2
V
5.5
V
THERMAL DATA
Symbol
Parameter
R_{th j-amb, fa} Thermal Resistance Junction-Ambient, Free Air
R_{th j-amb, sol} Thermal Resistance Junction-Ambient, Soldered
Typ. Value
68
55
PIN DESCRIPTION
N.
Name
1
AM MIX1 IN -
2
AM MIX1 IN +
3
FM MIX1 IN -
4
FM MIX1 IN +
5
FM RF AGC IN
6
FM AGC OUT
7
RF GND
8
VCO B
9
VCO E
10
OSC GND
11
XTAL D
12
XTAL G
13
OSC VCC
14
FM ANT ADJ
15
FM RF ADJ
16
PLL VCC
17
LP OUT
18
LP IN1
19
LP IN2
Function
AM 1^st mixer negative input (differential -)
AM 1^st mixer positive input (differential +)
FM mixer negative input (differential -)
FM mixer positive input (differential +)
RF AGC input
FM AGC output voltage
RF ground
Local oscillator input to the transistor base
Local oscillator input to the transistor emitter
Oscillator ground
Crystal oscillator MOS amplifier output
Crystal oscillator MOS amplifier input
Oscillator positive supply
Tuning varicap voltage for antenna FM filter
Tuning varicap voltage for RF FM filter
PLL positive supply
Op Amp output to PLL loop filters
FM loop filter connection to op-amp inverting input
AM loop filter connection to op-amp inverting input
Unit
°C/W
°C/W
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