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參數(shù)資料
| 型號： | STV8226 |
| 廠商： | 意法半導體 |
| 英文描述： | Multistandard TV Audio Processor and Digital Sound Demodulator |
| 中文描述： | 多標準電視音頻處理器和數(shù)字聲音解調(diào)器 |
| 文件頁數(shù)： | 29/97頁 |
| 文件大小： | 1871K |
| 代理商： | STV8226 |
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STV82x6
Power Supplies
7
Power Supplies
7.1
Supply Voltages
The STV82x6 supports different power configurations due to its integrated voltage regulators.
Typically, two power supplies, which are grouped into two sets of IC pins, are required.
1.
Digital Power Supply
(DPS) This supply may be either 3.3 V or 5 V if an external power
transistor is used. The DPS supplies pins VDD1, VDD2 and VDDP.
— In
3.3 V mode
, the power is directly supplied to the digital power pins. In this case, the REG
pin is not used and must be connected to the ground.
—
5 V mode
requires the use of an external transistor coupled to the integrated voltage
regulator via the REG pin in order to generate a stable 3.3 V supply to the digital power pins.
2.
Analog Power Supply
(APS) This supply may be either 8 V or 5 V. In both cases, external
resistors are required, except for pin VDDH. The APS supplies pins VDDIF, VDDC, VDDA and
VDDH.
— The
8 V power supply
is directly connected to pin VDDH and offers a 2 V
RMS
dynamic
voltage on SCART outputs. The other analog power pins can be supplied with an 8 V or 5 V
supply through external resistors.
— If only a
5 V power supply
is available for pin VDDH, the SCART outputs will be reduced to
1 V
RMS
. In this case, the SEL5V bit must be set in register
ANA_CTRL
.
Figure 17: 3.3 V / 8 V or 3.3 V / 5 V Application
Regulator
Digital Core
Clock Generator
A
Analog
Core
REG
VDDH
STV82x6
3.3 V
DPS
Standby
VDD1
VDD2
VDDP
V
V
V
8 or 5 V
APS
3.3 V
Regulator
3.3 V
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| STV8227 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
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| STV8237 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
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