參數(shù)資料
型號(hào)： TDA7540NTR
廠商： STMICROELECTRONICS
元件分類： 調(diào)諧器
英文描述： 2-BAND, AUDIO TUNER, PQFP80
封裝： 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-80
文件頁(yè)數(shù)： 25/76頁(yè)
文件大?。?/td> 1225K
代理商： TDA7540NTR
TDA7540N
Functional description
Stereoblend control
The stereoblend control block converts the internal LEVEL-voltage into a demodulator
compatible analog signal, which is used to control the channel separation between 0dB and
the maximum separation. Internally this control range has a fixed upper limit, which is the
internal reference voltage V
REF1. The lower limit can be programmed between 29 and 58% of
VREF1 in 4% steps (see Figure 6).
To adjust the external LEVEL-voltage to the internal range two values must be defined: the
LEVEL gain LG and VSBL. To adjust the voltage where the full channel separation is
reached (VST) the LEVEL gain LG has to be defined. The following equation can be used to
estimate the gain:
LG = VREF1/FSU@full stereo
The MONO-voltage VMO (0dB channel separation) can be chosen selecting VSBL.
Figure 6.
Relation between internal and external level-voltagees and setup of
stereoblend
The stereo blend function can be switched ON/OFF using bit Addr25<d2>. Please note that
in AM it must be switched in forced mono!
Highcut control
The highcut control set-up is similar to the stereoblend control set-up: the starting point
VHCH can be set with 2 bits to be 42, 50, 58 or 66% of VREF1 whereas the range can be set
to be 11, 18.3, 25.7 or 33% of VHCH (see Figure 7).
Figure 7.
Highcut characteristics
Lowpass
time constant
VHCL
VHCHFieldstrength
3 Deemp
τ Deemp
相關(guān)PDF資料
PDF描述
TDA7540N 2-BAND, AUDIO TUNER, PQFP80
TDA7560 55 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
TDA7560H AUDIO AMPLIFIER, PZFM25
TDA7561 38 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
TDA7562 38 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7541 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA7541B 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA7541BW 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA7541BWTR 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA7541TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
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