SA572 Datasheet, PDF (3/12 Pages) NXP Semiconductors – Programmable analog compandor

Philips Semiconductors
Programmable analog compandor
Product specification
SA572
BLOCK DIAGRAM
R1
(7,9)
6.8k
(6,10)
∆G
500
Ω
GAIN CELL
(3,13)
270
Ω
–
+
RECTIFIER
(16)
P.S.
(5,11)
–
+
10k
BUFFER 10k
(1,15)
(8)
(4,12)
(2,14)
Figure 2. Block Diagram
SR00695
DC ELECTRICAL CHARACTERISTICS
Standard test conditions (unless otherwise noted) V_CC=15V, T_A=25°C; Expandor mode (see Test Circuit).
Input signals at unity gain level (0dB) = 100mV_RMS at 1kHz; V₁ = V₂; R₂ = 3.3kΩ; R₃ = 17.3kΩ.
SYMBOL
PARAMETER
V_CC
I_CC
V_R
THD
THD
THD
PSRR
Supply voltage
Supply current
Internal voltage reference
Total harmonic distortion (untrimmed)
Total harmonic distortion (trimmed)
Total harmonic distortion (trimmed)
No signal output noise
DC level shift (untrimmed)
Unity gain level
Large-signal distortion
Tracking error
(measured relative to value at unity
gain)= [V_O–V_O (unity gain)]dB –V₂dB
Channel crosstalk
Power supply rejection ratio
TEST CONDITIONS
No signal
1kHz C_A=1.0µF
1kHz C_R=10µF
100Hz
Input to V₁ and V₂ grounded (20–20kHz)
Input change from no signal to 100mV_RMS
V₁=V₂=400mV
Rectifier input
V₂=+6dB V₁=0dB
V₂=–30dB V₁=0dB
200mV_RMS into channel A,
measured output on channel B
120Hz
Min
6
2.3
–1.5
60
SA572
Typ
2.5
0.2
0.05
0.25
6
±20
0
0.7
Max
22
6.3
2.7
1.0
25
±50
+1.5
3
UNIT
V_DC
mA
V_DC
%
%
%
µV
mV
dB
%
±0.2
dB
±0.5 –2.5, +1.6 dB
dB
70
dB
1998 Nov 03
3