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参数资料
| 型号： | TA8233BH |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
| 封装： | 2 MM PITCH, PLASTIC, HZIP-17 |
| 文件页数： | 8/14页 |
| 文件大小： | 1177K |
| 代理商： | TA8233BH |
TA8233BH
2002-10-30
3
The total closed loop gain GV of this IC can be obtained by expression below when the closed loop voltage gain of
amp 1 is GV1.
(1)
(dB)
R2
f
R
R2)
f
(R
R1
og
20
V1
G
L
l
+
=
The closed loop voltage gain of power amp, amp 3 and
amp 4 is fixed at GV3≒GV4 = 20dB.
Therefore, the total closed circuit voltage gain GV is
obtained through BTL connection by the expression as
below.
GV = GV1 + GV3 + 6 (dB)………(2)
For example, when Rf = 0, GV is obtained by the
expressions (1) and (2) as below.
GV≒24 + 20 + 6 = 50dB
The voltage gain is reduced when Rf is increased.
(Fig.2)
With the voltage gain reduced, since (1) the oscillation
stability is reduced, and (2) the pop noise changes
when VCC is set to on, refer to the items 3 and 4.
2. Stand-by SW function
By means of controlling pin(4) (stand-by terminal) to
high and low, the power supply can be set to on and off.
The threshold voltage of pin(4) is set at 2.1V (3VBE), and
the power supply current is about 1A (typ.) at the
stand-by state.
Control voltage of pin(4): V (SB)
Stand
-By
Power
V (SB) (V)
On
Off
0~2
Off
On
3~VCC
Adjustage of stand-by SW
(1) Since VCC can directly be controlled to on or off by the microcomputer, the switching relay can be omitted.
(2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for
switching
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TA8233BHQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:30W BTL 】 2ch Audio Power Amplifier |
| TA8233BHQ_06 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:30W BTL 】 2ch Audio Power Amplifier |
| TA8233H | 制造商:Panasonic Industrial Company 功能描述:IC |
| TA82370-20 | 制造商:Rochester Electronics LLC 功能描述: |
| TA8238025 | 制造商:Intel 功能描述:PERIPHERAL CONTROLLER |
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