參數(shù)資料
型號(hào)： TS4974IQT
廠商： STMICROELECTRONICS
元件分類(lèi)： 音頻控制
英文描述： 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, DSO10
封裝： 3 X 3 MM, 0.50 MM PITCH, ROHS COMPLIANT, DFN-10
文件頁(yè)數(shù)： 13/25頁(yè)
文件大小： 319K
代理商： TS4974IQT
Application information
TS4974
20/25
4.7
Pop performance
Due to its fully differential structure, the pop performance of the TS4974 is close to perfect.
However, due to mismatching between internal resistors Rin, Rfeed, and external input
capacitors Cin, some noise might remain at startup. To eliminate the effect of mismatched
components, the TS4974 includes pop reduction circuitry. With this circuitry, the TS4974 is
close to zero pop for all possible common applications.
In addition, when the TS4974 is in standby mode, due to the high impedance output stage in
this configuration, no pop is heard.
4.8
Single-ended input configuration
It is possible to use the TS4974 in a single-ended input configuration. The schematic in
Figure 41 shows an example of this configuration.
Figure 41.
Typical single-ended input application
4.9
Volume setting
The TS4974 features a digital volume control with an internal gain range of -33 dB up to
+12 dB, by steps of 3 dB. When the device is powered up from VCC (and not from the
standby pin), an initial gain of -12dB is internally fixed. When standby mode is activated, the
gain value is memorized and held until standby is released.
Cin1
330nF
Cin2
330nF
P1
Vin
Cb
1F
VCC
Cs
1F
STBY control
Speaker
8 Ohms
S1
Volume DOWN
S2
Volume UP
470k
Rpd1
470k
Rpd1
470k
Rpu1
470k
Rpu2
VCC
DIGITAL VOLUME
CONTROL
BIAS
STBY
+
1
2
3
7
6
9
8
4
10
5
UP
DO
W
N
Vin-
Vin+
BYP ASS
STBY
Vout-
Vout+
Vc
c
GN
D
U1
TS4974 DFN10
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TS4975 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus
TS4975_05 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus
TS4975EIJT 功能描述:音頻放大器 Stereo headphone amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TS4982IQT 功能描述:音頻放大器 2W Stereo Audio Amp 125 mW 16 ohm 3 lvl RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TS4984 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 x 1W Stereo audio power amplifier with active low standby mode
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