NE577 [NXP]
Unity gain level programmable low power compandor; 单位增益级可编程低功耗扩
| 型号： | NE577 |
| 厂家： | 
NXP |
| 描述： | Unity gain level programmable low power compandor |
| 文件： | 总4页 (文件大小：54K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Philips Semiconductors RF Communications Products
Product specification
Unity gain level programmable low power compandor
NE/SA577
DESCRIPTION
APPLICATIONS
PIN CONFIGURATION
The NE/SA577 is a unity gain level
programmable compandor designed for low
power applications. The NE577 is internally
configured as an expandor and a compressor
to minimize external component count.
• High performance portable
D and N Packages
communications
• Cellular radio
1
2
3
4
5
6
7
14
13
12
11
10
9
GCELL-
IN
V
CC
• Cordless telephone
• Consumer audio
• Wireless microphones
• Modems
COMP
COMP
COMP
RECT
IN
CAP2
IN
The NE577 is available in a 14-pin plastic
DIP and SO packages.
EXP-
CAP
CAP1
EXP
OUT
FEATURES
V
RECT
REF
IN
• Operating voltage range: 1.8V to 7V
GCELL
• Electric organs
I
IN
REF
• Low power consumption
8
GND
COMP
(1.4mA @ 3.6V)
• Hearing aids
OUT
• 0dB level programmable
• Automatic level control (ALC)
(10mV
to 1.0V
)
RMS
RMS
• Over 90dB of dynamic range
• Wide input/output swing capability
(rail-to-rail)
• Low external component count
• SA577 meets cellular radio specifications
• ESD hardened
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
NE577N
DWG #
0405B
0175D
0405B
0175D
0 to +70°C
0 to +70°C
14-Pin Plastic Dual In-Line Package (DIP)
14-Pin Plastic Small Outline (SO)
NE577D
–40 to +85°C
–40 to +85°C
14-Pin Plastic Dual In-Line Package (DIP)
14-Pin Plastic Small Outline (SO)
SA577N
SA577D
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
NE577
SA577
V
CC
Supply voltage
8
8
V
°C
°C
T
Operating ambient temperature range
Storage temperature range
0 to +70
–40 to +85
A
T
STG
–65 to +150 –65 to +150
°C/W
°C/W
Thermal impedance
DIP
SO
90
125
90
125
θ
JA
2
December 15, 1993
853-1535 11649
Philips Semiconductors RF Communications Products
Product specification
Unity gain level programmable low power compandor
NE/SA577
ELECTRICAL CHARACTERISTICS
T = 25°C, V = 3.6VDC, compandor 0dB level = –20dBV = 100mV
, output load R = 10kΩ, Freq = 1kHz, unless otherwise specified.
A
CC
RMS
L
R1, R2 and R3 are 1% resistors.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
NE/SA577
TYP
UNITS
MIN
MAX
1
V
Supply voltage
2
3.6
7
V
mA
V
CC
No signal
R = 100kΩ
2
I
Supply current
1.4
1.8
2
CC
2
V
REF
Reference voltage
V
CC
= 3.6V
1.7
10
1.9
R
Summing amp output load
Total harmonic distortion
kΩ
L
THD
1kHz, 0dB, BW = 3.5kHz
0.25
10
1.5
25
%
E
NO
Expandor output noise voltage
Unity gain level
BW = 20kHz, R = 0Ω
µV
dB
S
0dB
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
–1.5
0.18
0
1.5
3
Programmable range
dBV
dBV
dBV
dBV
mV
mV
dB
–10
–20
–40
1
V
OS
Output voltage offset
–150
–100
–1.0
150
100
1.0
Expandor output DC shift
Tracking error relative to 0dB output
Crosstalk, COMP to EXP
Output swing low
No signal to 0dB
7
-20dB expandor
0.3
–80
0.2
1kHz, 0dB, C
= 10µF
–65
dB
REF
V
V
O
Output swing high
V
CC
– 0.2
V
NOTE:
1. Operation down to V = 1.8V is possible, see application note AN1762.
CC
2. Reference voltage, V , is typically at 1/2 V
.
REF
CC
3. Unity gain level can be adjusted CONTINUOUSLY between –40dBV = 10mV
and 0dBV = 1.0V
. For details see application note
RMS
RMS
AN1762.
3
December 15, 1993
Philips Semiconductors RF Communications Products
Product specification
Unity gain level programmable low power compandor
NE/SA577
BLOCK DIAGRAM and TEST AND APPLICATION CIRCUIT
10k
GAINCELL
C1
EXP
10k
IN
+
V
14
13
12
11
10
9
CC
∆G
1
2
3
4
5
6
7
Σ
10µF
R1*
10k
RECTIFIER
COMP
CAP2
5k
C8
+
RECT
2.2µF
IN
C7
+
30k
30k
10k
EXP
CAP
2.2µF
+
COMP
IN
C2
10µF
EXPANDOR
C3
+
COMP
CAP1
+
EXP
C6
Σ
OUT
10µF
2.2µF
RECTIFIER
10k
C4
V
8.6k
REF
+
RECT
IN
10µF
R3*
V
REF
10k
BANDGAP
GCELL
IN
∆G
GAINCELL
I
V
REF
COMPRESSOR
CC
R2*
+
C5
10µF
GND
+
8
COMP
OUT
C9
10µF
GND
*R1, R2 and R3 are 1% resistors.
4
December 15, 1993
Philips Semiconductors RF Communications Products
Product specification
Unity gain level programmable low power compandor
NE/SA577
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 3.6V, T = 25°C, R1=R3=7.15kΩ, R2=100kΩ, 0dB level = 100mV, Freq. = 1kHz
A
SUPPLY CURRENT vs TEMPERATURE
SUPPLY CURRENT vs SUPPLY VOLTAGE
1.6
1.8
1.5
1.6
1.4
1.4
1.3
1.2
1.2
1
1.1
0.8
1
0.6
-40
-40
-40
-20
0
20
40
60
80
100
100
100
1
2
3
4
5
6
7
8
SUPPLY VOLTAGE (V)
AMBIENT TEMPERATURE (°C)
UNITY GAIN ERROR vs SUPPLY VOLTAGE
UNITY GAIN ERROR vs TEMPERATURE
0.6
0.4
0.2
0
0.6
0.4
0.2
0
NOTE: UNITY GAIN ERROR MAY BE
SET TO 0 AT ANY V
BY
CC
ADJUSTING THE VALUE OF R1, R3
EXPANDOR
EXPANDOR
COMPRESSOR
COMPRESSOR
-0.2
-0.4
-0.6
-0.2
-0.4
-0.6
2
3
4
5
6
7
-20
0
20
40
60
80
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
TRACKING ERROR vs INPUT LEVEL
THD vs TEMPERATURE
0.5
0.4
0.3
0.2
0.1
1
0.5
0
NOTE: RELATIVE
TO UNITY GAIN
COMPRESSOR
EXPANDOR
EXPANDOR
COMPRESSOR
-0.5
-1
2
3
4
5
6
-20
0
20
40
60
80
INPUT LEVEL (dB)
TEMPERATURE (°C)
5
December 15, 1993
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