- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄36332 > 935186180112 (NXP SEMICONDUCTORS) 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PZFM13 PDF資料下載
參數(shù)資料
| 型號(hào)： | 935186180112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PZFM13 |
| 封裝： | PLASTIC, SOT-141, SIP-13 |
| 文件頁(yè)數(shù)： | 18/18頁(yè) |
| 文件大小： | 152K |
| 代理商： | 935186180112 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)當(dāng)前第18頁(yè)
1998 Apr 07
9
Philips Semiconductors
Product specication
2
× 8 W stereo BTL audio output amplier
with DC volume control
TDA7057AQ
Fig.11 Input signal handling.
THD = 1 %.
handbook, halfpage
020
VP (V)
Vin
(V)
2.0
0
0.4
MBG665
0.8
1.2
1.6
4
8
12
16
Fig.12 Volume control current as a function of
volume control voltage.
handbook, halfpage
0
IVC
(
A)
2.0
VVC (V)
30
10
20
30
20
10
0
MBG666
0.4
0.8
1.2
1.6
APPLICATION INFORMATION
The application diagram is illustrated in Fig.13.
Test conditions
Tamb =25 °C unless otherwise specified; VP =12V;
VDC = 1.4 V; fi = 1 kHz; RL =16 .
The quiescent current has been measured without load
impedance.
The output power as a function of the supply voltage has
been measured at THD = 10%. The maximum output
power is limited by the maximum power dissipation and the
maximum available output current.
The maximum input signal voltage is measured at
THD = 1% at the output with a voltage gain of 0 dB.
To avoid instabilities and too high a distortion, the input
ground and power ground must be separated as far as
possible and connected as close as possible to the IC.
The DC volume control can be applied in several ways.
Two possible circuits are shown below the main
application diagram. The circuits at the control pin will
influence the switch-on and switch-off behaviour and the
maximum voltage gain.
For single-end applications the output peak current must
not exceed 100 mA. At higher output currents the
short-circuit protection (MCL) will be active.
Thermal considerations:
At high junction temperatures (>125
°C) the voltage gain
will decrease when it is higher than 0 dB. This results in a
decrease of the output voltage and an increase of the
distortion level. Thus for an optimal performance of the IC
the heatsink has to be designed properly.
Calculation example for application: VP = 15 V; RL =8 ,
stereo sine wave; worst case sine wave power dissipation
is 12 W.
For Tamb(max) =40 °C the thermal resistance from junction
to ambient
The thermal resistance of the heatsink becomes:
Rth h-a =Rth j-a (Rth j-c +Rth c-h);
Rth h-a = 7.1 (4 + 0.1) = 3 K/W.
It should be noted that for ‘music power’ the power
dissipation will be approximately half of the sine wave
dissipation. Thus a smaller heatsink can be used.
R
th j-a
125
40
–
()
12
-----------------------------
7.1 K/W
==
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935187130551 | PICTURE-IN-PICTURE IC, PQFP100 |
| 935187130557 | PICTURE-IN-PICTURE IC, PQFP100 |
| 935188030112 | FM, VIDEO DISCRIMINATOR, PDIP32 |
| 935190070118 | 8-CHANNEL, SGL ENDED MULTIPLEXER, PDSO20 |
| 933757480652 | 8-CHANNEL, SGL ENDED MULTIPLEXER, PDIP20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 9351MC2-BKV | 制造商:BEVCO Ergonomic Seating 功能描述:DELUXE CLEANROOM TASK STOOL ON GLIDES W/FOOTRING, Approval Categories:Certified 制造商:BEVCO Ergonomic Seating 功能描述:DELUXE CLEANROOM TASK STOOL ON GLIDES W/FOOTRING, Body Material:Vinyl Seat & Back, Foam Padding, Polyproplene Backshell, Aluminum Base, Color:Black, For Use With:Bevco A5 Adjustable Armrests & 3850S/5 Dual-Wheel Hard-Floor Casters , RoHS Compliant: NA |
| 9351MC2-BLV | 制造商:BEVCO Ergonomic Seating 功能描述:DELUXE CLEANROOM TASK STOOL ON GLIDES W/FOOTRING, Body Material:Vinyl Seat & Back, Foam Padding, Polyproplene Backshell, Aluminum Base, Color:Royal Blue, Series:9000, Size:Seat: 20"W x 18"D x 3"H, Back: 17.5"W x 16"H x 3"D , RoHS Compliant: NA |
| 9351ME-CH | 制造商:BEVCO Ergonomic Seating 功能描述:DELUXE ESD TASK STOOL ON GLIDES W/FOOTRING, Body Material:ESD Fabric Seat & Back, Foam Padding, ESD Polyproplene Backshell, Aluminum Base, Color:Charcoal, Series:9000, Size:Seat: 20"W x 18"D x 3"H, Back: 17.5"W x 16"H x 3"D , RoHS Compliant: NA |
| 9351ME-NY | 制造商:BEVCO Ergonomic Seating 功能描述:DELUXE ESD TASK STOOL ON GLIDES W/FOOTRING, Approval Categories:Exceeds ANSI/BIF 制造商:BEVCO Ergonomic Seating 功能描述:DELUXE ESD TASK STOOL ON GLIDES W/FOOTRING, Body Material:ESD Fabric Seat & Back, Foam Padding, ESD Polyproplene Backshell, Aluminum Base, Color:Navy Blue, Series:9000, Size:Seat: 20"W x 18"D x 3"H, Back: 17.5"W x 16"H x 3"D , RoHS Compliant: NA |
| 9352 | 功能描述:螺絲和緊固件 1" 10-32 NYLON PAN RoHS:否 制造商:Unspecified 產(chǎn)品: 類型:Washer 螺紋大小: 長(zhǎng)度: 材料:Steel 電鍍:Nickel 螺絲頭: 螺絲類型: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。