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參數(shù)資料
| 型號(hào)： | MC33110 |
| 廠商： | Motorola, Inc. |
| 英文描述： | LOW VOLTAGE COMPANDER |
| 中文描述： | 低電壓擴(kuò)展器 |
| 文件頁(yè)數(shù)： | 2/13頁(yè) |
| 文件大小： | 205K |
| 代理商： | MC33110 |
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MC33110
PIN DESCRIPTION
2
MOTOROLA RF/IF DEVICE DATA
Name
Pin
Description
Vref
1
Normally this pin is not used and is left open. It can be used to make limited adjustments to
the 0 dB level. Any noise or leakage at this pin will affect the 0 dB level and gain tracking.
NC
2, 13
No connection. These pins are not internally connected.
Expander Filter
3
Connect to an external capacitor to filter the full wave rectifier’s output. This capacitor
affects attack and decay times, as well as low frequency accuracy.
Expander Output
4
Output of the expander amplifier.
Expander Input
5
The input impedance is nominally 3.2 k
. Nominal signal range is 3.16 mVrms to
316 mVrms. Must be capacitor coupled to the signal source.
VB
6
An internal reference voltage, nominally VCC/2. This is an ac ground and must be well
filtered to obtain high power supply rejection and low crosstalk.
Ground
7
Connect to a clean power supply ground.
Compressor Feedback
8
Input to the compressor variable gain stage and rectifier. Normally the signal is supplied by
the compressor’s output (Pin 11). Input impedance is nominally 3.2 k
.
Inverting Input
9
Inverting input to the compressor amplifier. Normally, this is connected to the compressor’s
output through a filtered dc feedback path.
Compressor Input
10
The input impedance is nominally 10 k
. Nominal signal range is 100
μ
Vrms to 1.0 Vrms.
Must be capacitor coupled to the signal source.
Compressor Output
11
Output of the compressor amplifier.
Compressor Filter
12
Connect to an external capacitor to filter the full wave rectifier’s output. This capacitor
affects attack & decay times, and low frequency accuracy.
VCC
14
Power supply pin. Connect to a power supply providing between 2.1 V and 7.0 V. Nominal
current consumption is 3.5 mA.
1.0 V
100 mV
100
μ
V
1.0 mV
10 mV
316 mV
31.6 mV
10 mV
3.16 mV
+
–
+
–
Rectifier
Gain
Iref
VB
R6
R5
Vout
R4
Vin
– 60 dB
– 50 dB
– 40 dB
– 30 dB
– 20 dB
– 10 dB
0 dB
10 dB
20 dB
Vin
R2
R1
Gain
Rectifier
Iref
RS
VB
Vout
Transfer Functions
Compressor
Expander
Compression
Expansion
(Voltages are rms)
Vout
R5 x R6 x Irefx Vin
7.2 x R4
0.3162 x
Vin
Vout
7.2 x R3 x Vin2
R1x R2 x Iref
10 x Vin2
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| MC33110D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW VOLTAGE COMPANDER |
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| MC33111P | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW VOLTAGE COMPANDER |
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