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SA576D Datasheet(PDF) 3 Page - NXP Semiconductors

Part # SA576D
Description  Low power compandor
PDF  7 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

SA576D Datasheet(HTML) 3 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
SA576
Low power compandor
1997 Aug 14
10–3
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
Σ
Σ
∆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
µF
2.2
µF
10
µF
10
µF
C8
C7
C6
R3*
C5
+
+
+
+
+
+
+
10
µF
2.2
µF
10
µF
C9
+
10
µF
2.2
µF
+
*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
TA = 25°C, VCC = 3.6VDC, compandor 0dB level = –20dBV = 100mVRMS, output load RL = 10kΩ, Freq = 1kHz, unless otherwise specified.
R1, R2 and R3 are 1% resistors.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
SA576
UNITS
MIN
TYP
MAX
VCC
Supply voltage1
2
3.6
7
V
ICC
Supply current
No signal
R2 = 100kΩ
1.4
3
mA
VREF
Reference voltage2
VCC = 3.6V
1.8
V
RL
Summing amp output load
10
k
Ω
THD
Total harmonic distortion
1kHz, 0dB, BW = 3.5kHz
0.25
1.5
%
ENO
Expandor output noise voltage
BW = 20kHz, RS = 0Ω
10
30
µV
0dB
Unity gain level
0dB at 1kHz
–1.5
0.18
1.5
dB
VOS
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, CREF = 10µF
–80
dB
VO
Output swing low
0.2
V
VO
Output swing high
VCC – 0.2
V
NOTE:
1. Operation down to VCC = 1.8V is possible, see description on front page of SA576 data sheet.
2. Reference voltage, VREF, is typically at 1/2 VCC.



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