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Электронный компонент: SA577D

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Philips Semiconductors
SA577
Unity gain level programmable power
compandor
Product specification
Replaces data of December 15, 1993
1997 Nov 07
RF COMMUNICATIONS PRODUCTS
IC17 Data Handbook
Philips Semiconductors
Product specification
SA577
Unity gain level programmable low power compandor
2
1997 Nov 07
853-1535 18666
DESCRIPTION
The SA577 is a unity gain level programmable compandor designed
for low power applications. The SA577 is internally configured as an
expandor and a compressor to minimize external component count.
FEATURES
Operating voltage range: 1.8V to 7V
Low power consumption (1.4mA @ 3.6V)
0dB level programmable (10mV
RMS
to 1.0V
RMS
)
Over 90dB of dynamic range
Wide input/output swing capability (rail-to-rail)
Low external component count
SA577 meets cellular radio specifications
ESD hardened
PIN CONFIGURATION
GCELLIN
RECTIN
EXPCAP
EXPOUT
VREF
GND
VCC
COMPCAP2
COMPIN
COMPCAP1
RECTIN
GCELLIN
COMPOUT
IREF
D Package
1
2
3
4
5
6
7
14
13
12
11
10
9
8
SR00716
Figure 1. Pin Configuration
APPLICATIONS
High performance portable communications
Cellular radio
Cordless telephone
Consumer audio
Wireless microphones
Modems
Electric organs
Hearing aids
Automatic level control (ALC)
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
14-Pin Plastic Small Outline (SO)
40 to +85
C
SA577D
SOT108-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
SYMBOL
PARAMETER
SA577
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
SO
125
C/W
Philips Semiconductors
Product specification
SA577
Unity gain level programmable low power compandor
1997 Nov 07
3
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
SA577
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
2
mA
V
REF
Reference voltage
2
V
CC
= 3.6V
1.7
1.8
1.9
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
25
V
0dB
Unity gain level
0dB at 1kHz
1.5
0.18
1.5
dB
Programmable range
3
R1 = R3 = 18.7k
, R2 = 24.3k
0
R1 = R3 = 22.6k
, R2 = 100k
10
dBV
R1 = R3 = 7.15k
, R2 = 100k
20
dBV
R1 = R3 = 1.33k
, R2 = 200k
40
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
65
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 application note AN1762.
2. Reference voltage, V
REF
, is typically at 1/2 V
CC
.
3. Unity gain level can be adjusted CONTINUOUSLY between 40dBV = 10mV
RMS
and 0dBV = 1.0V
RMS
. For details see application note
AN1762.
Philips Semiconductors
Product specification
SA577
Unity gain level programmable low power compandor
1997 Nov 07
4
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
SR00717
Figure 2. Block Diagram and Test and Application Circuit
Philips Semiconductors
Product specification
SA577
Unity gain level programmable low power compandor
1997 Nov 07
5
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
SA577
Unity gain level programmable power compandor
1997 Nov 07
6
SO14:
plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
Philips Semiconductors
Product specification
SA577
Unity gain level programmable power compandor
1997 Nov 07
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