TDA7528 STMicroelectronics, TDA7528 Datasheet - Page 14

• 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

Electrical characteristics
3.3
3.3.1
3.3.2
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Power management and voltage regulator
The TDA7528 has a single 5 V supply. The 3.3 V supply for the VCO must be derived from
an external NPN transistor controlled by the internal voltage regulator. It is also possible to
use an external 3.3 V regulator. In this case, special care has to be taken on this 3.3V .
Power management
The TDA7528 detects whether all the voltages are high enough and stable when the
operating power supply is applied. The power-on reset is tripped and all the control registers
are set to "low" if this condition is not met.
As long as the voltages remain within the permissible range, the SPI/I
(in the I
communication with the bus master).
The SPI-/I
TDA7528.
The following function groups can be switched on/off via SPI/I
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Power-on circuit and low supply voltage detector
Power-on circuit:
The power-on circuit produces a reset whenever one of the following voltages is below it's
POR level. (BIASD1, BIASD2 < 1.2 V; VDDPLL < 2.4V; VCCIF < 3.8 V)
Low supply voltage detector:
The "PWR_STABLE_read" status bit has the value "0" after power on. This bit is set to "1"
by an SPI/I2C write command from the microcontroller in initialization communication to the
"PWR_STABLE_write" bit. The microcontroller cannot reset the "PWR_STABLE_read" bit. A
"0" transmitted in the "PWR_STABLE_write" bit has no effect.
If the power supply falls below the programmed threshold all registers are set to their power-
on default, including that the "PWR_STABLE_read" bit is set to "0". By this the
microcontroller can verify at any time whether a critical drop in voltage (value "0") has taken
place since the last TDA7528 read out of this bit. The threshold voltage can be calibrated
PLL {divider R, N and V, PFD, charge pump, VCO1 (3,7 GHz-VCO) or VCO2 (4,7 GHz-
VCO), Reference-Oscillator or LVDS input buffer}
FM/AM-mixer and active balun, FM-AGC
D/A-converter_1
D/A-converter_2
AM-LNA
AM-low pass filter
AM-AGC
IF-section {IF-amplifier, anti-aliasing-filter, IF-AGC}
GPIO
temperature-sensor,
Sensor ADC
2
C mode this can be detected by the μP through the acknowledge signal on every
2
C interface is in power-on mode when the operating voltage is applied to the
Doc ID 13141 Rev 6
2
C:
2
C interface is active
TDA7528