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参数资料
| 型号： | TA8184F |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO24 |
| 封装： | 0.300 INCH, 1 MM PITCH, PLASTIC, SSOP-24 |
| 文件页数： | 12/16页 |
| 文件大小： | 631K |
| 代理商： | TA8184F |
TA8184P/F
2002-03-05
5
Operating Precautions and Application Methods (Pin No.: (P/F))
1. How to determine tone controlled frequency characteristic time constants
Bass characteristics determining elements: CL, CLB terminals ((4/5), (5/6), (16/19), (17/20)) Figure 1
Low-bandwidth cut-off frequencies fL1, fL2, fL3 of bass characteristics are determined by the following
equations :
k
10
CLB
2
1
=
fL1
π
-- (1)
(10 k is determined in IC interior)
k
1
CLB
2
1
=
fL2
π
---- (2)
(1 k is determined in IC interior)
k
10
CL
2
1
=
fL3
π
---- (3)
(10 k is determined in IC interior)
Under reference circuits of CL = 0.33 F and CLB = 10 F, setting is made as follows:
fL1 ≈ 1.59 Hz, fL2 ≈ 15.9 Hz, fL3 ≈ 48.2 Hz
When the characteristics during boosting are considered, crossing with 0dB axis is made at fL1, increase
starts by 20dB/dec., and flat characteristics of Gain = 20dB is obtained at fL2.
Low-bandwidth f response is determined at fL3-namely, CL and gain starts decreasing from fL3 by 20dB
/dec.
As explained above, low-bandwidth characteristics can be varied by varying CL and CLB.
Treble characteristics determining element: CH ((3/4), (18/21))
Figure 2 High-bandwidth cut-off frequencies f H1 and f H2 of treble characteristics can be determined by
the following equations:
k
10
CH
2
1
=
fH1
π
---- (4)
(10 k is determined in IC interior)
k
1
CH
2
1
=
fH2
π
----- (5)
(1 k is determined in IC interior)
Under reference circuit of CH = 0.0082 F setting is
made as follows:
fH1 ≈ 1.94 kHz, fH2 = 19.4 kHz
As explained above, high-bandwidth characteristics can be varied by varying CH.
By creating the status of CL → decrease and CH → increase, low/high bandwidth gains
(f = 100 Hz, 10 kHz) increase but gain near f = 1 kHz is also increased.
On the other hand, when the status of CL → increase and CH → decrease is created, take note that gain
near f = 1 kHz approaches 0dB while low/high-bandwidth gains are decreased.
2. Loudness control
By connecting pin (9/11) (loudness terminal) to pin (8/9) (volume terminal), “Loudness” status can be
created. Loudness boost amount is determined by pin (9/11) DC voltage (refer to the subsequently described
GV-V (9/11) data).
Loudness is controlled by considering that sound levels will become uniform for all frequency levels
through increasing low/high-bandwidth gains when volume is reduced-namely, sound volume is low.
When loudness control is not used, connect pin (9/11) to pin (10/12) (reference terminal).
The capacitor (typ. 0.047 F) between pin (9/11) and GND is for reducing pop sound during loudness → ON
while the capacitor (typ. 1 F) between pin (8/9) and GND is used for the same purpose during loudness →
OFF.
Figure 1
Bass characteristics
(during boosting)
Figure 2
Treble characteristics
(during boosting)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TA8184FMATEL | 制造商:Panasonic Industrial Company 功能描述:IC |
| TA8184P | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:DUAL CHANNEL VOLTAGE/TONE CONTROL IC |
| TA8186 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:AM/FM IF+MPX |
| TA8186P | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:AM/FM IF+MPX |
| TA8187 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:1.5V DUAL FM IF |
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