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參數(shù)資料
| 型號(hào)： | SA578 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Unity gain level programmable low power compandor |
| 中文描述： | 單位增益級(jí)可編程低功耗compandor |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 63K |
| 代理商： | SA578 |
Philips Semiconductors
Product specification
SA578
Unity gain level programmable low power compandor
1997 Nov 07
4
ELECTRICAL CHARACTERISTICS
T
A
= 25
°
C, V
CC
= 3.6VDC, compandor 0dB level = –20dBV = 100mV
RMS
, output load R
L
= 10k
, Freq = 1kHz, unless otherwise specified.
R1, R2 and R3 are 1% resistors.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
SA578
UNITS
MIN
TYP
MAX
V
CC
Supply voltage
1
2
3.6
7
V
I
CC
Supply current
operating
power down
No signal, R
2
= 100k
1.4
170
2
mA
μ
A
V
REF
R
L
THD
Reference voltage
2
V
CC
= 3.6V
1.7
1.8
1.9
V
Summing amp minimum output load
Total harmonic distortion
600
0.25
%
1kHz, 0dB, BW = 3.5kHz
1.0
E
NO
0dB
Expandor output noise voltage
BW = 20kHz, R
S
= 0
0dB at 1kHz
10
20
μ
V
Unity gain level
–1.0
0.18
1.0
dB
Programmable range
3
R1 = R3 = 18.7k
, R2 = 24.3k
R1 = R3 = 22.6k
, R2 = 100k
R1 = R3 = 7.15k
, R2 = 100k
R1 = R3 = 1.33k
, R2 = 200k
0
–10
dBV
–20
–40
V
OS
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, C
REF
= 10
μ
F
–80
–65
dB
V
O
Output swing low
0.2
V
Output swing high
V
CC
– 0.2
Power Down/Mute low level
0
0.4
V
Power Down/Mute input current
Pin 8 grounded
–65
μ
A
NOTE:
1. Operation down to V
CC
= 1.8V is possible.
2. Reference voltage, V
, is typically at 1/2 V
.
3. Unity gain level can be adjusted CONTINUOUSLY between –40dBV = 10mV
RMS
and 0dBV = 1.0V
RMS
. For details see application note
AN1762.
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