參數(shù)資料
型號(hào)： TDA7564
廠商： 意法半導(dǎo)體
英文描述： MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES
中文描述： 多功能四功率放大器，內(nèi)置診斷特征
文件頁(yè)數(shù)： 13/20頁(yè)
文件大?。?/td> 248K
代理商： TDA7564
13/20
TDA7564
S. GND (so) / S. GND (sk) in the above table make a distinction according to which of the 2 outputs is shorted
to ground (test-current source side= so, test-current sink side = sk). More precisely, in Channels LF and RR, so
= CH+, sk = CH-; in Channels LR and RF, so = CH-, sk = CH+ .
In Permanent Diagnostic the table is the same, with only a difference concerning Open Load(*) , which is not
among the recognisable faults. Should an Open Load be present during the device's normal working, it would
be detected at a subsequent Turn on Diagnostic cycle (i.e. at the successive Car Radio Turn on).
FAULTS AVAILABILITY
All the results coming from I
2
C bus, by read operations, are the consequence of measurements inside a defined
period of time. If the fault is stable throughout the whole period, it will be sent out. This is true for DC diagnostic
(Turn on and Permanent), for Offset Detector, for AC Diagnostic (the low current sensor needs to be stable to
confirm the Open tweeter).
To guarantee always resident functions, every kind of diagnostic cycles (Turn on, Permanent, Offset, AC) will
be reactivate after any I
2
C reading operation. So, when the micro reads the I
2
C, a new cycle will be able to start,
but the read data will come from the previous diag. cycle (i.e. The device is in Turn On state, with a short to Gnd,
then the short is removed and micro reads I
2
C. The short to Gnd is still present in bytes, because it is the result
of the previous cycle. If another I
2
C reading operation occurs, the bytes do not show the short). In general to
observe a change in Diagnostic bytes, two I
2
C reading operations are necessary.
I
2
C PROGRAMMING/READING SEQUENCES
A correct turn on/off sequence respectful of the diagnostic timings and producing no audible noises could be as
follows (after battery connection):
TURN-ON: (STAND-BY OUT + DIAG ENABLE) --- 500 ms (min) --- MUTING OUT
TURN-OFF: MUTING IN --- 20 ms --- (DIAG DISABLE + STAND-BY IN)
Car Radio Installation: DIAG ENABLE (write) --- 200 ms --- I
2
C read (repeat until All faults disappear).
AC TEST: FEED H.F. TONE -- AC DIAG ENABLE (write) --- WAIT > 3 CYCLES --- I
2
C read
(repeat I
2
C reading until tweeter-off message disappears).
OFFSET TEST: Device in Play (no signal) -- OFFSET ENABLE - 30ms - I
2
C reading
(repeat I
2
C reading until high-offset message disappears).
相關(guān)PDF資料
PDF描述
TDA7565 QUAD POWER AMPLIFIER WITH BUILT-IN VOLTAGE CONVERTER
TDA7566 MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES
TDA7575PD MULTIFUNCTION DUAL BRIDGE POWER AMPLIFIER WITH INTEGRATED DIGITAL DIAGNOSTICS
TDA7580 FM/AM DIGITAL IF SAMPLING PROCESSOR
TDA7701 BATTERY OPERATED FULLY INTEGRATED FM TUNER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7564B 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7564BH 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7564BPD 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7564BPDTR 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7565 功能描述:音頻放大器 Quad Power Amplifier Built-in Volt Conv 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
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