Philips ne576 DATASHEETS
INTEGRATED CIRCUITS
NE/SA576
Low power compandor
Product specification 1993 Dec 15
IC17 Data Handbook
Philips Semiconductors Product specification
SYMBOL
PARAMETER
UNITS
NE/SA576Low power compandor
DESCRIPTION
The NE/SA576 is a unity gain level programmable compandor
designed for low power applications. The NE576 is internally
configured as an expandor and a compressor to minimize external
component count.
The NE576 can operate at 1.8V . During normal operations, the
NE576 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
V
to half VCC. One resistor connects between VCC and V
REF
the other connects from V
of 1.8V requires two external resistors to bring
CC
to ground. A typical value for these
REF
REF
;
external resistors is approximately 20k. A lower value can be used,
but the power consumption will go up.
The NE576 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
D and N Packages
OUT
V
I
REF
GND
IN
IN
CAP
REF
1
2
3
4
5
6
7
GCELL
RECT
EXP
EXP
Figure 1. Pin Configuration
APPLICATIONS
•Cordless telephone
•Consumer audio
•Wireless microphones
•Modems
•Electric organs
•Hearing aids
•Automatic level control
14
V
CC
13
COMP
CAP2
12
COMP
IN
11
COMP
CAP1
10
RECT
IN
9
GCELL
IN
8
COMP
OUT
SR00713
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
14-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C NE576N SOT27-1
14-Pin Plastic Small Outline (SO) 0 to +70°C NE576D SOT108-1
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
RATING
NE576 SA576
T
V
θ
CC
T
A
STG
JA
Supply voltage 8 8 V
Operating ambient temperature range 0 to +70 –40 to +85 °C
Storage temperature range –65 to +150 –65 to +150 °C
Thermal impedance DIP
SO
90
125
90
125
°C/W
°C/W
1993 Dec 15 853-1536 11649
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Philips Semiconductors Product specification
V
V
NE/SA576Low power compandor
BLOCK DIAGRAM and TEST AND APPLICATION CIRCUIT
C1
EXP
IN
+
10µF
RECT
EXP
CAP
+
2.2µF
C2
C3
EXP
OUT
10µF
C4
V
REF
*R1, R2 and R3 are 1% resistors.
+
10µF
R2*
V
REF
GND
10k
C7
10µF
CAP2
+
CAP1
RECT
R3*
GCELL
+
C5
+
V
C8
COMP
+
IN
C9
10µF
CC
2.2µF
C6
2.2µF
IN
IN
COMP
SR00714
OUT
Σ
5k
14
COMP
13
30k 30k 10k
Σ
10k
8.6k
RECTIFIER
12
11
+
COMP
10
10k
V
CC
COMPRESSOR
∆G
GAINCELL
9
10µF
8
GAINCELL
10k
1
R1*
IN
RECTIFIER
2
∆G
10k
3
+
4
EXPANDOR
5
6
I
REF
BANDGAP
7
GND
Figure 2. Block Diagram and Test and Application Circuit
ELECTRICAL CHARACTERISTICS
TA = 25°C, VCC = 3.6VDC, compandor 0dB level = –20dBV = 100mV
R1, R2 and R3 are 1% resistors.
SYMBOL PARAMETER TEST CONDITIONS NE/SA576 UNITS
1
2
V
V
I
Supply voltage
CC
Supply current
CC
Reference voltage
REF
R
Summing amp output load 10 kΩ
L
THD Total harmonic distortion 1kHz, 0dB, BW = 3.5kHz 0.25 1.5 %
E
Expandor output noise voltage BW = 20kHz, RS = 0Ω 10 30 µV
NO
0dB Unity gain level 0dB at 1kHz –1.5 0.18 1.5 dB
V
Output voltage offset No signal –150 1 150 mV
OS
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
Output swing low 0.2
O
Output swing high VCC – 0.2
NOTE:
1. Operation down to V
2. Reference voltage, V
= 1.8V is possible, see description on front page of NE576 data sheet.
CC
, is typically at 1/2 VCC.
REF
, output load RL = 10kΩ, Freq = 1kHz, unless otherwise specified.
RMS
LIMITS
MIN TYP MAX
2 3.6 7 V
No signal
= 100kΩ
R
2
1.4 3 mA
VCC = 3.6V 1.8 V
= 10µF –80 dB
REF
1993 Dec 15
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