SA577 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
SA577 Datasheet PDF : 4 Pages
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Philips Semiconductors RF Communications Products
Unity gain level programmable low power compandor
Product specification
NE/SA577
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
NE/SA577
UNITS
VCC
ICC
VREF
RL
THD
ENO
0dB
Supply voltage1
Supply current
Reference voltage2
Summing amp output load
Total harmonic distortion
Expandor output noise voltage
Unity gain level
Programmable range3
VOS Output voltage offset
Expandor output DC shift
No signal
R2 = 100kΩ
VCC = 3.6V
1kHz, 0dB, BW = 3.5kHz
BW = 20kHz, RS = 0Ω
0dB at 1kHz
R1 = R3 = 18.7kΩ, R2 = 24.3kΩ
R1 = R3 = 22.6kΩ, R2 = 100kΩ
R1 = R3 = 7.15kΩ, R2 = 100kΩ
R1 = R3 = 1.33kΩ, R2 = 200kΩ
No signal
No signal to 0dB
MIN
2
1.7
10
–1.5
–150
–100
TYP
MAX
3.6
7
V
1.4
2
mA
1.8
1.9
V
kΩ
0.25
1.5
%
10
25
µV
0.18
1.5
dB
0
dBV
–10
dBV
–20
dBV
–40
dBV
1
150
mV
7
100
mV
Tracking error relative to 0dB output
Crosstalk, COMP to EXP
VO
Output swing low
Output swing high
-20dB expandor
1kHz, 0dB, CREF = 10µF
–1.0
0.3
1.0
dB
–80
–65
dB
0.2
V
VCC – 0.2
V
NOTE:
1. Operation down to VCC = 1.8V is possible, see application note AN1762.
2. Reference voltage, VREF, is typically at 1/2 VCC.
3. Unity gain level can be adjusted CONTINUOUSLY between –40dBV = 10mVRMS and 0dBV = 1.0VRMS. For details see application note
AN1762.
December 15, 1993
3
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