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Электронный компонент: SA576D

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Philips
Semiconductors
SA576
Low power compandor
Product specification
1997 Aug 14
INTEGRATED CIRCUITS
IC17 Data Handbook
Philips Semiconductors
Product specification
SA576
Low power compandor
102
1997 Aug 14
853-1536 18287
DESCRIPTION
The SA576 is a unity gain level programmable compandor designed
for low power applications. The SA576 is internally configured as an
expandor and a compressor to minimize external component count.
The SA576 can operate at 1.8V. During normal operations, the
SA576 can operate from at least a 2V battery. If the battery voltage
drops to 1.8V, this part will still continue to function, however, turning
on the part at a V
CC
of 1.8V requires two external resistors to bring
V
REF
to half V
CC
. One resistor connects between V
CC
and V
REF
;
the other connects from V
REF
to ground. A typical value for these
external resistors is approximately 20k. A lower value can be used,
but the power consumption will go up.
The SA576 is available in a 14-pin plastic DIP and SO packages.
FEATURES
Operating voltage range: 1.8V to 7V
Low power consumption
(1.4mA @ 3.6V)
Over 80dB of dynamic range
Wide input/output swing capability
(rail-to-rail)
Low external component count
ESD hardened
PIN CONFIGURATION
GCELLIN
RECTIN
EXPCAP
EXPOUT
VREF
GND
VCC
COMPCAP2
COMPIN
COMPCAP1
RECTIN
GCELLIN
COMPOUT
IREF
D and N Packages
1
2
3
4
5
6
7
14
13
12
11
10
9
8
SR00713
Figure 1. Pin Configuration
APPLICATIONS
Cordless telephone
Consumer audio
Wireless microphones
Modems
Electric organs
Hearing aids
Automatic level control
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
14-Pin Plastic Dual In-Line Package (DIP)
40 to +85
C
SA576N
SOT27-1
14-Pin Plastic Small Outline (SO)
40 to +85
C
SA576D
SOT108-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
SYMBOL
PARAMETER
SA576
UNITS
V
CC
Supply voltage
8
V
T
A
Operating ambient temperature range
40 to +85
C
T
STG
Storage temperature range
65 to +150
C
JA
Thermal impedance
DIP
SO
90
125
C/W
C/W
Philips Semiconductors
Product specification
SA576
Low power compandor
1997 Aug 14
103
BLOCK DIAGRAM and TEST AND APPLICATION CIRCUIT
1
2
3
4
5
6
7
8
9
10
14
13
12
11
VREF
VCC
GND
COMPIN
BANDGAP
IREF
G
G
EXPANDOR
COMPRESSOR
GAINCELL
GAINCELL
RECTIFIER
VCC
GND
COMPCAP2
COMPCAP1
GCELLIN
COMPOUT
RECTIN
VREF
EXPOUT
EXPCAP
RECTIN
EXPIN
RECTIFIER
C3
C1
R1*
C2
R2*
C4
10
F
2.2
F
10
F
10
F
C8
C7
C6
R3*
C5
+
+
+
+
+
+
+
10
F
2.2
F
10
F
C9
+
10
F
2.2
F
+
*R1, R2 and R3 are 1% resistors.
30k
30k
10k
10k
10k
10k
10k
5k
10k
8.6k
SR00714
Figure 2. Block Diagram and Test and Application Circuit
ELECTRICAL CHARACTERISTICS
T
A
= 25
C, V
CC
= 3.6VDC, compandor 0dB level = 20dBV = 100mV
RMS
, output load R
L
= 10k
, Freq = 1kHz, unless otherwise specified.
R1, R2 and R3 are 1% resistors.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
SA576
UNITS
MIN
TYP
MAX
V
CC
Supply voltage
1
2
3.6
7
V
I
CC
Supply current
No signal
R
2
= 100k
1.4
3
mA
V
REF
Reference voltage
2
V
CC
= 3.6V
1.8
V
R
L
Summing amp output load
10
k
THD
Total harmonic distortion
1kHz, 0dB, BW = 3.5kHz
0.25
1.5
%
E
NO
Expandor output noise voltage
BW = 20kHz, R
S
= 0
10
30
V
0dB
Unity gain level
0dB at 1kHz
1.5
0.18
1.5
dB
V
OS
Output voltage offset
No signal
150
1
150
mV
Expandor output DC shift
No signal to 0dB
100
7
100
mV
Tracking error relative to 0dB output
-20dB expandor
1.0
0.3
1.0
dB
Crosstalk, COMP to EXP
1kHz, 0dB, C
REF
= 10
F
80
dB
V
O
Output swing low
0.2
V
V
O
Output swing high
V
CC
0.2
V
NOTE:
1. Operation down to V
CC
= 1.8V is possible, see description on front page of SA576 data sheet.
2. Reference voltage, V
REF
, is typically at 1/2 V
CC
.
Philips Semiconductors
Product specification
SA576
Low power compandor
1997 Aug 14
104
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 3.6V, T
A
= 25
C, R1=R3=7.15k
, R2=100k
, 0dB level = 100mV, Freq. = 1kHz
1.8
1.6
1.4
1.2
1
0.8
0.6
1
2
3
4
5
6
7
8
SUPPLY VOLTAGE (V)
SUPPL
Y
CURRENT

(mA)
SUPPLY CURRENT vs SUPPLY VOLTAGE
1.6
1.5
1.4
1.3
1.2
1.1
1
-40
-20
0
20
40
60
80
100
SUPPL
Y
CURRENT

(mA)
SUPPLY CURRENT vs TEMPERATURE
AMBIENT TEMPERATURE (
C)
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
2
3
4
5
6
7
UNITY GAIN ERROR (dB)
UNITY GAIN ERROR vs SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
COMPRESSOR
EXPANDOR
NOTE: UNITY GAIN ERROR MAY BE
SET TO 0 AT ANY VCC BY
ADJUSTING THE VALUE OF R1, R3
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-40
-20
0
20
40
60
80
100
UNITY GAIN ERROR (dB)
UNITY GAIN ERROR vs TEMPERATURE
TEMPERATURE (
C)
COMPRESSOR
EXPANDOR
1
0.5
0
-0.5
-1
2
3
4
5
6
OUTPUT ERROR (dB)
TRACKING ERROR vs INPUT LEVEL
INPUT LEVEL (dB)
COMPRESSOR
EXPANDOR
NOTE: RELATIVE
TO UNITY GAIN
0.5
0.4
0.3
0.2
0.1
-40
-20
0
20
40
60
80
100
THD (%)
THD vs TEMPERATURE
TEMPERATURE (
C)
COMPRESSOR
EXPANDOR
SR00715
Figure 3. Typical Performance Characteristics
Philips Semiconductors
Product specification
SA576
Low power compandor
1997 Aug 14
5
DIP14:
plastic dual in-line package; 14 leads (300 mil)
SOT27-1
Philips Semiconductors
Product specification
SA576
Low power compandor
1997 Aug 14
6
SO14:
plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
Philips Semiconductors
Product specification
SA576
Low power compandor
1997 Aug 14
7
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICATIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 940883409
Telephone 800-234-7381
DEFINITIONS
Data Sheet Identification
Product Status
Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
Philips
Semiconductors