SA576 Datasheet, PDF (2/7 Pages) NXP Semiconductors – Low power compandor

Philips Semiconductors
Low power compandor
Product specification
SA576
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
D and N Packages
GCELL_IN 1
RECT_IN ²
EXP_CAP ³
EXP_OUT ⁴
V_REF 5
I_REF ⁶
GND 7
14 _VCC
13 COMP_CAP2
12 COMP_IN
11 COMP_CAP1
10 _RECTIN
9 GCELL_IN
8 _COMPOUT
Figure 1. Pin Configuration
SR00713
APPLICATIONS
• Cordless telephone
• Consumer audio
• Wireless microphones
• Modems
• Electric organs
• Hearing aids
• Automatic level control
ORDERING INFORMATION
DESCRIPTION
14-Pin Plastic Dual In-Line Package (DIP)
14-Pin Plastic Small Outline (SO)
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
V_CC
T_A
T_STG
θ_JA
Supply voltage
Operating ambient temperature range
Storage temperature range
Thermal impedance
DIP
SO
TEMPERATURE RANGE
–40 to +85°C
–40 to +85°C
ORDER CODE
SA576N
SA576D
DWG #
SOT27-1
SOT108-1
RATING
SA576
8
–40 to +85
–65 to +150
90
125
UNITS
V
°C
°C
°C/W
°C/W
1997 Aug 14
10–2
853-1536 18287