SA576N [NXP]
Low power compandor; 低功耗扩
| 型号： | SA576N |
| 厂家： | 
NXP |
| 描述： | Low power compandor |
| 文件： | 总7页 (文件大小：78K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
SA576
Low power compandor
Product specification
IC17 Data Handbook
1997 Aug 14
Philips
Semiconductors
Philips Semiconductors
Product specification
Low power compandor
SA576
DESCRIPTION
PIN CONFIGURATION
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.
D and N Packages
1
2
3
4
5
6
7
14
13
12
11
10
9
GCELL
RECT
EXP
V
IN
IN
CC
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
COMP
COMP
COMP
CAP2
IN
CAP
OUT
on the part at a V of 1.8V requires two external resistors to bring
CC
CAP1
EXP
V
REF
to half V . One resistor connects between V and V
;
REF
CC
CC
V
RECT
the other connects from V
to ground. A typical value for these
REF
IN
REF
external resistors is approximately 20k. A lower value can be used,
but the power consumption will go up.
GCELL
I
IN
REF
8
GND
COMP
OUT
The SA576 is available in a 14-pin plastic DIP and SO packages.
SR00713
FEATURES
Figure 1. Pin Configuration
• Operating voltage range: 1.8V to 7V
• Low power consumption
APPLICATIONS
(1.4mA @ 3.6V)
• Cordless telephone
• Over 80dB of dynamic range
• Consumer audio
• Wireless microphones
• Modems
• Wide input/output swing capability
(rail-to-rail)
• Low external component count
• ESD hardened
• Electric organs
• Hearing aids
• Automatic level control
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
–40 to +85°C
ORDER CODE
SA576N
DWG #
SOT27-1
SOT108-1
14-Pin Plastic Dual In-Line Package (DIP)
14-Pin Plastic Small Outline (SO)
–40 to +85°C
SA576D
ABSOLUTE MAXIMUM RATINGS
RATING
SYMBOL
PARAMETER
UNITS
SA576
8
V
CC
Supply voltage
V
T
Operating ambient temperature range
Storage temperature range
–40 to +85
–65 to +150
°C
°C
A
T
STG
Thermal impedance
DIP
SO
90
125
°C/W
°C/W
θ
JA
10–2
1997 Aug 14
853-1536 18287
Philips Semiconductors
Product specification
Low power compandor
SA576
BLOCK DIAGRAM and TEST AND APPLICATION CIRCUIT
10k
GAINCELL
C1
EXP
10k
IN
+
V
14
13
12
11
10
9
CC
∆G
1
2
3
4
5
6
7
Σ
10µF
R1*
10k
RECTIFIER
COMP
CAP2
5k
C8
+
RECT
2.2µF
IN
C7
+
30k
30k
10k
EXP
CAP
2.2µF
+
COMP
IN
C2
10µF
EXPANDOR
C3
+
COMP
CAP1
+
EXP
C6
Σ
OUT
10µF
2.2µF
RECTIFIER
10k
C4
V
8.6k
REF
+
RECT
IN
10µF
R3*
V
REF
10k
BANDGAP
GCELL
IN
∆G
GAINCELL
I
V
REF
COMPRESSOR
CC
R2*
+
C5
10µF
GND
+
8
COMP
OUT
C9
10µF
GND
*R1, R2 and R3 are 1% resistors.
SR00714
Figure 2. Block Diagram and Test and Application Circuit
ELECTRICAL CHARACTERISTICS
T = 25°C, V = 3.6VDC, compandor 0dB level = –20dBV = 100mV
, output load R = 10kΩ, Freq = 1kHz, unless otherwise specified.
A
CC
RMS
L
R1, R2 and R3 are 1% resistors.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
SA576
TYP
3.6
UNITS
MIN
MAX
1
V
CC
Supply voltage
2
7
V
No signal
R = 100kΩ
2
I
Supply current
1.4
1.8
3
mA
CC
2
V
REF
Reference voltage
V
CC
= 3.6V
V
R
Summing amp output load
Total harmonic distortion
Expandor output noise voltage
Unity gain level
10
kΩ
%
L
THD
1kHz, 0dB, BW = 3.5kHz
0.25
10
1.5
30
E
NO
BW = 20kHz, R = 0Ω
µV
dB
mV
mV
dB
dB
S
0dB
0dB at 1kHz
No signal
–1.5
–150
–100
–1.0
0.18
1
1.5
150
100
1.0
V
OS
Output voltage offset
Expandor output DC shift
Tracking error relative to 0dB output
Crosstalk, COMP to EXP
Output swing low
No signal to 0dB
-20dB expandor
7
0.3
–80
0.2
1kHz, 0dB, C
= 10µF
REF
V
O
V
Output swing high
V
– 0.2
CC
NOTE:
1. Operation down to V = 1.8V is possible, see description on front page of SA576 data sheet.
CC
2. Reference voltage, V
1997 Aug 14
, is typically at 1/2 V
.
REF
CC
10–3
Philips Semiconductors
Product specification
Low power compandor
SA576
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 3.6V, T = 25°C, R1=R3=7.15kΩ, R2=100kΩ, 0dB level = 100mV, Freq. = 1kHz
A
SUPPLY CURRENT vs TEMPERATURE
SUPPLY CURRENT vs SUPPLY VOLTAGE
1.6
1.8
1.5
1.6
1.4
1.4
1.3
1.2
1.2
1
1.1
0.8
1
0.6
-40
-40
-40
-20
0
20
40
60
80
100
100
100
1
2
3
4
5
6
7
8
SUPPLY VOLTAGE (V)
AMBIENT TEMPERATURE (°C)
UNITY GAIN ERROR vs SUPPLY VOLTAGE
UNITY GAIN ERROR vs TEMPERATURE
0.6
0.4
0.2
0
0.6
0.4
0.2
0
NOTE: UNITY GAIN ERROR MAY BE
SET TO 0 AT ANY V
BY
CC
ADJUSTING THE VALUE OF R1, R3
EXPANDOR
EXPANDOR
COMPRESSOR
COMPRESSOR
-0.2
-0.4
-0.6
-0.2
-0.4
-0.6
2
3
4
5
6
7
-20
0
20
40
60
80
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
TRACKING ERROR vs INPUT LEVEL
THD vs TEMPERATURE
0.5
0.4
0.3
0.2
0.1
1
0.5
0
NOTE: RELATIVE
TO UNITY GAIN
COMPRESSOR
EXPANDOR
EXPANDOR
COMPRESSOR
-0.5
-1
2
3
4
5
6
-20
0
20
40
60
80
SR00715
INPUT LEVEL (dB)
TEMPERATURE (°C)
Figure 3. Typical Performance Characteristics
10–4
1997 Aug 14
Philips Semiconductors
Product specification
Low power compandor
SA576
DIP14: plastic dual in-line package; 14 leads (300 mil)
SOT27-1
5
1997 Aug 14
Philips Semiconductors
Product specification
Low power compandor
SA576
SO14: plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
6
1997 Aug 14
Philips Semiconductors
Product specification
Low power compandor
SA576
DEFINITIONS
Data Sheet Identification
Product Status
Definition
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
Objective Specification
Formative or in Design
Preproduction Product
Full Production
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.
Preliminary Specification
Product Specification
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.
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. PhilipsSemiconductorsmakesnorepresentationorwarrantythatsuchapplicationswillbesuitableforthespecifiedusewithoutfurthertesting
or modification.
LIFE SUPPORT APPLICATIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
orsystemswheremalfunctionofaPhilipsSemiconductorsandPhilipsElectronicsNorthAmericaCorporationProductcanreasonablybeexpected
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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Philips
Semiconductors
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