TDA7421 Datasheet, PDF (5/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS

TDA7421
ELECTRICAL CHARACTERISTICS
DC PARAMETERS (Tamb = 25°C; Vcc = 8.5V, V_dd = 5V unless otherwise specified)
Symbol
DIG Vdd
DIG Idd
Parameter
Digital Supply Voltage
Digital Supply Current
PLL VCC
PLL ICC
PLL Supply Voltage
PLL Supply Current
RF VCC
RF ICC
RFSupply Voltage
RF Supply Current
IF1 VCC
IF1 ICC
IF1 Supply Voltage
IF1 Supply Current
IF2 VCC
IF2 ICC
IF2 Supply Voltage
IF2 Supply Current
OSC VCC Oscillator Supply Voltage
OSC ICC Oscillator Supply Current
TOTAL ICC Total Supply Current
Test Condition
AM MODE
FM MODE
AM MODE
FM MODE
AM MODE
FM MODE
AM MODE
FM MODE
AM MODE
FM MODE
AM MODE
FM MODE
AM MODE
FM MODE
Min. Typ. Max. Unit
4.75
5.25 V
4.0 4.6 5.2 mA
3.5 4.0 4.5 mA
7.5
10
V
1.2 1.6 2.0 mA
2.5 3.0 3.5 mA
7.5
10
V
15.0 17.5 20.0 mA
10.0 13.0 16.0 mA
7.5
10
V
2.2 2.7 3.2 mA
16.0 19.5 23.0 mA
7.5
10
V
8.5 10.5 12.5 mA
27.0 32.0 37.0 mA
7.5
10
V
14.5 17.0 19.5 mA
11.0 14.0 17.0 mA
45.0 50.0 55.0 mA
73.0 81.0 89.0 mA
AC PARAMETERS
Ref: FM Test Circuit measure Vosc with high impedance FET probe
Voltage Controlled Oscillator (VCO)
Symbol
fVCOmin
Parameter
Minimum VCO Frequency
fVCOmax Maximum VCO Frequency
VOSC
Oscillator Amplitude
Test Condition
Vturn = 0, Europe/USA
Japan
Vturn = VCC, Europe/USA
Japan
fosc = 108.8MHz, Europe/USA
fOSC = 72.3MHz, Japan
Reference Oscillator
Ref: AM Test Circuit measure VXTAL with high impedance FET probe
Symbol
Parameter
Test Condition
fXTAL
VXTAL
Reference Frequency
Oscillator Amplitude
Min.
123.2
79.2
Typ.
80.9
55
128
90
106
Max.
98.2
65.4
Uni
MHz
MHz
MHz
MHz
dBu
Min.
Typ.
10.25
108
Max.
Uni
MHz
dBu
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