Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

ML33111-5P Datasheet(PDF) 8 Page - LANSDALE Semiconductor Inc.

No. de pieza ML33111-5P
Descripción Electrónicos  Low Voltage Compander Silicon Monolithic Integrated Circuit
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  LANSDALE [LANSDALE Semiconductor Inc.]
Página de inicio  http://www.lansdale.com
Logo LANSDALE - LANSDALE Semiconductor Inc.

ML33111-5P Datasheet(HTML) 8 Page - LANSDALE Semiconductor Inc.

Back Button ML33111-5P Datasheet HTML 4Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 5Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 6Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 7Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 8Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 9Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 10Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 11Page - LANSDALE Semiconductor Inc. ML33111-5P Datasheet HTML 12Page - LANSDALE Semiconductor Inc.  
Zoom Inzoom in Zoom Outzoom out
 8 / 12 page
background image
www.lansdale.com
Page 8 of 12
Issue A
LANSDALE Semiconductor, Inc.
ML33111
Introduction
The ML33111 compander (COMpressor and exPANDER)
is composed of two variable gain circuits which provide
compression and expansion of a signal’s dynamic range. The
compressor will take a signal with a 60 dB dynamic range
(1.0 mV to 1.0 Vrms), and reduce that to a 30 dB dynamic
range (10 mV to 316 mV) by attenuating strong signals,
while amplifying low level signals. The expander does the
opposite in that the 30 dB signal range is increased to a
dynamic range of 60 dB by amplifying strong signals and
attenuating low level signals. The 0 dB level is internally set
at 100 mVrms — that is the signal level which is neither
amplified nor attenuated. Both circuits contain the necessary
precision full wave rectifier, variable gain cell, and tempera-
ture compensated references required for accurate and stable
performance.
Both the compressor and expander can be muted independ-
ently by the use of Pins 4 and 12, respectively. A minimum
of 55 dB of muting is guaranteed for the compressor, and 60
dB for the expander. A passthrough function (Pin 8) is pro-
vided which sets both sections to unity gain, regardless of
input level.
Two uncommitted op amps are provided which can be used
for perpherial functions. Each is internally biased at Vb
(≈ +1.5 V), and has a bandwidth of ≈300 kHz.
NOTE: All dB values mentioned in this data sheet, unless
otherwise noted, are referenced to 100 mVrms.
Compressor
The compressor is a noninverting amplifier with a fixed
input resistor and a variable gain cell in its feedback path as
shown in Figure 15.
The amplifier output is sampled by the precision rectifier
which, in turn, supplies a DC signal (ICONTROL), repre-
sentative of the rectifier’s AC signal, to the variable gain
cell. The reference current (IREF) is an internally generated
precision current. The effective impedance of the variable
gain cell varies with the ratio of the two currents, and
decreases as ICONTROL increases, thereby providing com-
pression. The output is related to the input by the following
equation (Vin and Vout are rms volts):
The input and output are internally biased at Vb (≈ +1.5 V),
and must therefore be capacitor coupled to external circuitry.
Pin 3 input impedance is nominally 10 kΩ (±20%), and the
maximum functional input signal is listed in the
Recommended Operating Conditions table. Bias currents
required by the op amp and the variable gain cell are inter-
nally supplied. Due to clamp diodes at the input (to VCC and
ground), the input signal must be maintained between the
supply rails. If the input signal goes more than 0.5 V above
VCC or below ground, excessive currents will flow, and dis-
tortion will show up at the output and possibly in other parts
of the circuit.
When AC signals are not present at the input, the variable
gain cell will attempt to set a very high gain to comply with
Equation 2. An internal clamp limits the maximum gain to
≈26 dB to prevent instabilities.
The output of the rectifier is filtered by the capacitor at Pin
5, which, in conjunction with an internal 20 k resistor, pro-
vides the time constant for the attack and decay times.The
attack and decay times listed in the Electrical Characteristics
were determined using the test procedure defined in EIA-553.
Figure 9 indicates how the times vary with the capacitor value.
If the attack and decay times are decreased using a smaller
capacitor, performance at low frequencies will degrade.
(1)
In terms of dB levels, the relationship is:
Vo(dB) = 0.5 x Vi(dB)
(2)
where 0 dB = 100 mVrms (See Figures 3 and 4).
Vout
0.3162 x Vin
40 k
Output
2
7.5 k
∆ Gain
Rectifier
ICONTROL
Iref
5
Vb
10 k
VCC
3
Input
1.0 µF
Figure 15. Compressor
FUNCTIONAL DESCRIPTION


Número de pieza similar - ML33111-5P

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
LANSDALE Semiconductor ...
ML33111-5P LANSDALE-ML33111-5P Datasheet
1Mb / 12P
   Low Voltage Compander Silicon Monolithic Integrated Circuit
More results

Descripción similar - ML33111-5P

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
LANSDALE Semiconductor ...
ML33111 LANSDALE-ML33111 Datasheet
1Mb / 12P
   Low Voltage Compander Silicon Monolithic Integrated Circuit
logo
Hynix Semiconductor
GL6552 HYNIX-GL6552 Datasheet
68Kb / 6P
   Low Voltage Compander
logo
Tiger Electronic Co.,Lt...
SL5020 TGS-SL5020 Datasheet
157Kb / 7P
   LOW VOLTAGE COMPANDER
logo
Motorola, Inc
MC33111 MOTOROLA-MC33111 Datasheet
120Kb / 12P
   Low Voltage Compander
logo
Wuxi Youda electronics ...
YD5020 YOUDA-YD5020 Datasheet
101Kb / 4P
   LOW VOLTAGE COMPANDER
logo
Motorola, Inc
MC33110 MOTOROLA-MC33110 Datasheet
209Kb / 13P
   LOW VOLTAGE COMPANDER
logo
Rohm
BD3490FV ROHM-BD3490FV Datasheet
296Kb / 5P
   Silicon Monolithic Integrated Circuit
BD822EFV ROHM-BD822EFV Datasheet
131Kb / 5P
   Silicon Monolithic Integrated Circuit
BD3985FV ROHM-BD3985FV_11 Datasheet
96Kb / 5P
   Silicon Monolithic Integrated Circuit
BD6041GUL ROHM-BD6041GUL_11 Datasheet
182Kb / 5P
   Silicon Monolithic Integrated Circuit
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com