TDA7528 STMicroelectronics, TDA7528 Datasheet - Page 25

• Manufacturer Part Number: TDA7528
• Description: IC FRONT END MODULE CAR 64-LQFP
• Manufacturer: STMicroelectronics

Specifications of TDA7528

• Frequency: 50kHz ~ 108MHz, 161MHz ~ 163MHz
• Modulation Or Protocol: AM, FM
• Applications: Automotive Audio
• Current - Receiving: 175mA
• Data Interface: PCB, Surface Mount
• Voltage - Supply: 3.3V, 5V
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Antenna Connector: -
• Lead Free Status / Rohs Status: Compliant

TDA7528
Table 12.
Symbol
Lthr
-
-
-
-
-
-
-
-
Threshold RF level
Min. Threshold
Max Threshold
Threshold steps
Absolute threshold error
Total threshold error
Absolute threshold error
Total threshold error
Temperature drift of AGC
thresholds
Frequency range
frequency range
4.
All other possible bit combinations of data byte AMAGC[3:0] are prohibited.
The voltage output can be configured as GPO.
The AMAGC2 output (voltage output) is short-circuit protected by a current limiter. The
AMAGC1 output (current output) needs an external resistor. The current output is voltage-
tolerant up to VCC, the voltage output up to VDD.
The microcontroller (STA3005 backend) can read the voltage at the AGC capacitor via the
serial control interface. On the microcontroller request, the measurement is done by
connecting the time constant capacitor to the central ADC (specified in chapter 3.10); the
information can be used to calculate the AGC attenuation.
The AM AGC system is controlled by an average detector.
The AM AGC can be enabled independently in AM and FM mode
AM-AGC electrical characteristics
Calibration mode for voltage output
a)
b)
Parameter
external feedback to pin GP4/UDS. This mode can only be used with an external
LNA.
internal feedback
data byte AMAGC[3:0] = 1110
calibration mode for voltage output (mode 3.a.): the voltage Vthr can be switched
directly to the voltage output pin. The reference voltage is programmable in the
range described in 3.a.
external feedback
data byte AMAGC[3:0] = 0010
calibration mode for external feedback (mode 3.b.): the output voltage is set to a
value, that the feedback on GP4(UDS is equal to Vthr. The reference voltage is
programmable in the range described in 3.b.
Referred to mixer input
AM mixer input
AM filter input
AM mixer input
AM filter input
4 bit control
0.5 to 30.0 MHz @ 25 °C
0.5 to 30.0 MHz
0.1 to 0.5 MHz @ 25 °C
0.1 to 0.5 MHz
-
Reduced performance
-
Doc ID 13141 Rev 6
Test condition
Min.
0.05
-0.5
0.4
0.1
-1
-2
-2
-
-
-
-
-
-
Electrical characteristics
101.5
106.5
0.011
Typ
0.9
89
94
-
-
-
-
-
-
-
Max
1.4
3.5
0.1
30
2
3
3
-
-
-
-
-
-
dB/°C
Units
dBµV
dBµV
dBµV
dBµV
MHz
MHz
dB
dB
dB
dB
dB
25/65
-