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參數(shù)資料
| 型號： | CA3140MZ96 |
| 廠商： | Intersil |
| 文件頁數(shù)： | 7/23頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP 4.5MHZ BIMOS 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 9 V/µs |
| 增益帶寬積： | 4.5MHz |
| 電流 - 輸入偏壓： | 10pA |
| 電壓 - 輸入偏移： | 5000µV |
| 電流 - 電源： | 4mA |
| 電流 - 輸出 / 通道： | 40mA |
| 電壓 - 電源，單路/雙路(±)： | 4 V ~ 36 V，±2 V ~ 18 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
15
FN957.10
July 11, 2005
Tone Control Circuits
High slew rate, wide bandwidth, high output voltage
capability and high input impedance are all characteristics
required of tone control amplifiers. Two tone control circuits
that exploit these characteristics of the CA3140 are shown in
Figures 19 and 20.
The first circuit, shown in Figure 20, is the Baxandall tone
control circuit which provides unity gain at midband and
uses standard linear potentiometers. The high input
impedance of the CA3140 makes possible the use of low-
cost, low-value, small size capacitors, as well as reduced
load of the driving stage.
Bass treble boost and cut are
±15dB at 100Hz and 10kHz,
respectively. Full peak-to-peak output is available up to at
least 20kHz due to the high slew rate of the CA3140. The
amplifier gain is 3dB down from its “flat” position at 70kHz.
Figure 19 shows another tone control circuit with similar
boost and cut specifications. The wideband gain of this
circuit is equal to the ultimate boost or cut plus one, which in
this case is a gain of eleven. For 20dB boost and cut, the
input loading of this circuit is essentially equal to the value of
the resistance from Terminal No. 3 to ground. A detailed
analysis of this circuit is given in “An IC Operational
Transconductance Amplifier (OTA) With Power Capability” by
L. Kaplan and H. Wittlinger, IEEE Transactions on Broadcast
and Television Receivers, Vol. BTR-18, No. 3, August, 1972.
FIGURE 19. TONE CONTROL CIRCUIT USING CA3130 SERIES (20dB MIDBAND GAIN)
FIGURE 20. BAXANDALL TONE CONTROL CIRCUIT USING CA3140 SERIES
4
7
+
CA3140
-
+30V
3
2
0.1
F
6
0.005
F
0.1
F
2.2M
2.2M
5.1
M
0.012
F0.001F
0.022
F
2
F
18k
0.0022
F
200k
(LINEAR)
100
pF
100pF
BOOST
TREBLE
CUT
BOOST
BASS
CUT
10k
1M
CCW (LOG)
100k
TONE CONTROL NETWORK
FOR SINGLE SUPPLY
- +
+15V
3
0.1
F
0.005
F
5.1M
0.1
F
-15V
2
6
7
4
+
CA3140
-
TONE CONTROL NETWORK
FOR DUAL SUPPLIES
NOTES:
5. 20dB Flat Position Gain.
6.
±15dB Bass and Treble Boost and Cut
at 100Hz and 10kHz, respectively.
7. 25VP-P output at 20kHz.
8. -3dB at 24kHz from 1kHz reference.
4
7
+
CA3140
-
+32V
3
0.1
2.2M
2.2
M
FOR SINGLE SUPPLY
F
6
2
0.1
F
20pF
750
pF
750
pF
2.2M
0.047
F
BOOST TREBLE
CUT
51k
5M
(LINEAR)
51k
TONE CONTROL NETWORK
BOOST
BASS
CUT
240k
5M
(LINEAR)
240k
+15V
3
0.1
F
0.047
F
0.1
F
-15V
2
6
7
4
+
CA3140
-
FOR DUAL SUPPLIES
ΝΟΤΕΣ:
9.
±15dB Bass and Treble Boost and Cut at 100Hz and 10kHz, Respectively.
10. 25VP-P Output at 20kHz.
11. -3dB at 70kHz from 1kHz Reference.
12. 0dB Flat Position Gain.
TONE CONTROL
NETWORK
CA3140, CA3140A
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