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SA571N

P1-P3P4-P6P7-P9P10-P11
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 4
1 Publication Order Number:
SA571/D
SA571
Compandor
The SA571 is a versatile low cost dual gain control circuit in which
either channel may be used as a dynamic range compressor or
expandor. Each channel has a full−wave rectifier to detect the average
value of the signal, a linerarized temperature−compensated variable
gain cell, and an operational amplifier.
The SA571 is well suited for use in cellular radio and radio
communications systems, modems, telephone, and satellite
broadcast/receive audio systems.
Features
• Complete Compressor and Expandor in one IChip
• Temperature Compensated
• Greater than 110 dB Dynamic Range
• Operates Down to 6.0 VDC
• System Levels Adjustable with External Components
• Distortion may be Trimmed Out
• Dynamic Noise Reduction Systems
• Voltage Controlled Amplifier
• Pb−Free Packages are Available*
Applications
• Cellular Radio
• High Level Limiter
• Low Level Expandor − Noise Gate
• Dynamic Filters
• CD Player
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
RECT CAP 1
RECT IN 1
DG CELL IN 1
GND
RECT CAP 2
DG CELL IN 2
RECT IN 2
V
CC
D, and N Packages*
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
INV. IN 1
RES. R
3
1
OUTPUT 1
THD TRIM 1
INV. IN 2
RES. R
3
2
OUTPUT 2
THD TRIM 2
TOP VIEW
*
SOL − Released in Large SO Package Only.
PIN CONNECTIONS
S
ee detailed ordering and shipping information in the package
d
imensions section on page 9 of this data sheet.
ORDERING INFORMATION
PDIP−16
N SUFFIX
CASE 648
16
1
16
SOIC−16 WB
D SUFFIX
CASE 751G
1
MARKING
DIAGRAMS
16
1
SA571D
AWLYYWWG
16
1
SA571N
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
SA571
http://onsemi.com
2
VARIABLE
GAIN
THD TRIM
RECT CAP
1.8V
INVERTER IN
OUTPUT
+
−
RECTIFIER
Figure 1. Block Diagram
DG IN
RECT IN
V
REF
R
2
20kW
R
1
10kW
R
3
20kW
R
4
30kW
R
3
MAXIMUM RATINGS
Rating Symbol Value Unit
Maximum Operating Voltage V
CC
18 VDC
Operating Ambient Temperature Range T
A
−40 to +85 °C
Operating Junction Temperature T
J
150 °C
Power Dissipation P
D
400 mW
Thermal Resistance, Junction−to−Ambient
N Package
D Package
R
q
JA
75
105
°C/W
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
SA571
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (V
CC
= +15 V, T
A
= 25°C, unless otherwise noted)
Characteristic Symbol Test Conditions Min Typ Max Unit
Supply Voltage V
CC
− 6.0 − 18 V
Supply Current I
CC
No Signal − 4.2 4.8 mA
Output Current Capability I
OUT
− ± 20 − − mA
Output Slew Rate SR − − ± .5 −
V/ms
Gain Cell Distortion (Note 2) Untrimmed
Trimmed
− 0.5
0.1
2.0 %
Resistor Tolerance − − ± 5 ± 15 %
Internal Reference Voltage − 1.65 1.8 1.95 V
Output DC Shift (Note 3) Untrimmed − ± 90 ± 150 mV
Expandor Output Noise No Signal, 15 Hz−20 kHz
(Note 1)
− 20 60
mV
Unity Gain Level (Note 5) 1.0 kHz −1.5 0 +1.5 dBm
Gain Change (Notes 2 and 4) − − ± 0.1 − dB
Reference Drift (Note 4) − − +2.0, −25 +20, −50 mV
Resistor Drift (Note 4) −40°C to +85°C − +10, −12 − %
Tracking Error
(Measured Relative to Value at Unity Gain)
Equals [V
O
− V
O
(unity gain)] dB − V
2
dBm
Rectifier Input,
V
CC
= +6.0 V
V
2
= +6.0 dBm, V
1
= 0 dB
V
2
= −30 dBm, V
1
= 0 dB
−
+0.2
+0.2 −1.0, +1.5
dB
Channel Separation − − 60 − dB
1. Input to V
1
and V
2
grounded.
2. Measured at 0 dBm, 1.0 kHz.
3. Expandor AC input change from no signal to 0 dBm.
4. Relative to value at T
A
= 25°C.
5. 0 dBm = 775 mV
RMS
.
P1-P3P4-P6P7-P9P10-P11

SA571N

Mfr. #:
Buy SA571N
Manufacturer:
ON Semiconductor
Description:
Audio Amplifiers Dual Gain Compandor
Lifecycle:
New from this manufacturer.
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