參數(shù)資料
型號(hào)： TS4604IPT
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 0.065 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28
封裝： 0.65 MM PITCH, ROHS COMPLIANT, TSSOP-28
文件頁(yè)數(shù)： 16/31頁(yè)
文件大?。?/td> 644K
代理商： TS4604IPT
TS4604
Application information
Doc ID 17913 Rev 1
23/31
To switch the TS4604 back to standby, the voltage across the divider R1, R2 has to be lower
than 1.25 V - VHyst
× R1/(R1 + R2). The ESV can be an external voltage or simply the
power supply voltage PVcc_LD/HD.
6.9
2nd order Butterworth low-pass filter
The TS4604 can also be configured as a low-pass filter to be driven directly by a DAC
output. It can be used, for example, as a 2nd order low-pass filter, with either a differential
input or a single-ended input.
Figure 51 and Figure 52 depict these two kinds of application and represent a multiple
feedback 2nd order low-pass filter.
An AC-coupling capacitor should be added to block any DC component from the source,
which helps to reduce the output DC offset to a minimum.
Example 2nd-order multi-feedback filter in differential mode
Figure 53 shows a filter in differential mode with a cut-off frequency at 30 kHz (configured as
per the values in Table 8, which proposes various filter options using a differential input).
Figure 51.
Multi-feedback filter with
differential input
Figure 52.
Multi-feedback filter with single-
ended input
Rin
Rfd
Cin
Rfd
R1
C1
C2
Vout
Vin-
Vin+
AM06145
Rin
Rfd
Cin
R1
C1
C2
Vout
Vin-
AM06146
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