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TDA7421 数据表(PDF) 3 Page - STMicroelectronics

部件名 TDA7421
功能描述  AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS
Download  38 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7421 数据表(HTML) 3 Page - STMicroelectronics

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THERMAL DATA
Symbol
Parameter
Value
Unit
Rth j-amb
Thermal resistance Junction-Ambient
typ.
68
°C/W
PIN DESCRIPTION
N.
Name
Function
1
AM MIX1 IN -
Input "-" to the AM 1st mixer (differential input)
2
AM MIX1 IN +
Input "+" to the AM 1st mixer (differential input)
3
FM MIX IN -
Input "-" to the FM mixer (differential input)
4
FM MIX IN +
Input "+" to the FM mixer (differential input)
5
FM RF AGC IN
Input to the RF AGC circuit
6
FM AGC OUT
Voltage output to the FM AGC
7
RF GND
RF circuits ground
8
VCO B
Local oscillator input to the transistor base (two-pin oscillator)
9
VCO E
Local oscillator input to the transistor emitter (two-pin oscillator)
10
OSC GND
Oscillator ground
11
XTAL D
Crystal oscillator input to MOS drain (two-pin oscillator)
12
XTAL G
Crystal oscillator input to MOS gate (two-pin oscillator)
13
OSC VCC
Oscillator positive supply
14
FM ANT ADJ
Tuning varicap voltage for antenna FM filter
15
FM RF ADJ
Tuning varicap voltage for RF FM filter
16
PLL VCC
PLL positive supply
17
LP OUT
Op Amp output to PLL loop filters
18
LP IN1
PLL "N. 1" loop filter connection to Op Amp inverting input
19
LP IN2
PLL "N. 2" loop filter connection to Op Amp inverting input
20
LP IN3
PLL "N. 3" loop filter connection to Op Amp inverting input
21
PLL VREF
Voltage reference to Op Amp noninverting input
22
PLL GND
PLL ground
23
SLEEP
I
2C bus disconnect signal
24
SDA
I
2C bus data
25
SCL
I
2C bus clock
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
Tamb
Operating Temperature Range
-40 to 85
°C
Tstg
Storage Temperature Range
-55 to 150
°C
VCC
Analog Supply Voltages (PLL, RF, IF1, IF2, OSC)
10.2
V
VDD
Digital Supply Voltage
5.5
V
TDA7421
3/38


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