參數(shù)資料
型號(hào)： TDA7528
廠商： STMICROELECTRONICS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
文件頁(yè)數(shù)： 7/65頁(yè)
文件大?。?/td> 610K
代理商： TDA7528
TDA7528
Electrical characteristics
Doc ID 13141 Rev 6
indirect by measuring the DAC1 (9 bit) output voltage for DAC1=0x200 or the DAC2 (8 bit)
output voltage for DAC2=0x100).
The PWR_STABLE functionality can be switched on/off. The default value is the switched off
mode.
3.3.3
Voltage regulator
The internal voltage regulator drives the external transistor for the 3.3V supply of the VCO
and PLL. The 3.3 V voltage regulator for the bus interface and the reference oscillator is fully
integrated.
When an external 3.3 V supply is used for the VCO and PLL supply, special care has to be
taken on the supply voltages during the ramp-up phase:
●
the 3.3 V supply must never be higher than the 5 V supply;
●
the difference between 5 V and 3.3 V must never exceed 3.6 V.
The second prerequisite is automatically met using a 3.3 V Z-diode between the 5 V and the
3.3 V supplies.
Table 5.
Voltage sag detection electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ
Max
Unit
VSTHmin
Min. supply voltage threshold
-40 to 150 °C, Tj ≤150 °C
4.1
4.3
4.5
V
VSTHmax Max supply voltage threshold
-
4.4
4.6
4.9
V
-
Step size
-
100
-
mV
tc
Time constant
-
1
-
μs
Table 6.
Voltage regulator electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ
Max
Unit
VDD
3.3V supply voltage
Internal voltage regulator with
external power transistor
3.1
3.3
3.5
V
IDD
current of external VDD
Current through external
transistor or from external
3.3 V supply
-60
80
mA
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