TDA7511 Просмотр технического описания (PDF) - STMicroelectronics
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TDA7511 Datasheet PDF : 41 Pages
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TDA7511
ELECTRICAL CHARACTERISTCS (continued)
Tamb = +25°C, VCC1 = VCC2 = VCC3 = VCCVCO = VCCMIX1 = 8.5V, fRF = 98MHz, dev. = 40kHz,
fMOD = 1kHz, fIF1 = 10.7MHz, fIF2 = 450KHz, fXtal = 10.25MHz, in test or application circuit, unless otherwise
specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
VCCMIX1 MIX1 supply voltage
7.5
8.5
10
V
VCCMIX2 MIX2 supply voltage
7.5
8.5
10
V
ICC1 Supply current
FM ON
7.5
mA
ICC1 Supply current
AM ON
10
mA
ICC2 Supply current
FM ON
50
mA
ICC2 Supply current
AM ON
60
mA
ICC3 Supply current
2
mA
ICCVCO Supply current
2.5
mA
ICCMIX1 Supply current
FM ON
6
mA
ICCMIX1 Supply current
AM ON
5
mA
ICCMIX2 Supply current
AM ON
5
mA
Reference Voltages
VREF1 Internal reference voltage
IREF1 = 0mA
5
V
VREF2 Internal reference voltage
IREF2 = 0mA
2.5
V
Wide Band RF AGC
V11 Threshold AGC start
V6 = VCC2/2
80
dBµV
RIN Input resistance
500
Ω
CIN Input capacitance
2.5
pF
Narrow Band RF & Keying AGC
V60 Lower threshold
FMAGC, V11 = 0mVRMS
82
dBµV
V60 Upper threshold
FMAGC, V11 = 0mVRMS
92
dBµV
RIN Input resistance
10
kΩ
CIN Input capacitance
2.5
pF
AGC MOSFET Driver Output
V6 Max. AGC output voltage
V11 = 0mVRMS
VCC2
V
-0.5V
V6 Min. AGC output voltage
V11 = 50mVRMS
0.5
V
I6
Min. AGC charge current
V11 = 0mVRMS,V6 = VCC2/2
-12.5
µA
I6
Max. AGC discharge current
V11 = 50mVRMS,V6 = VCC2/2
1.25
mA
AGC PIN Diode Driver Output
I5
AGC OUT, current min.
V11 = 0mVRMS, V5 = 2V
50
µA
I5
AGC OUT, current max.
V11 = 50 mVRMS, V5 = 2V
-6
mA
Mixer1 (10.7MHz)
RIN Input impedance
Balanced, f = 98MHz
9
Ω
6/41
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