SA5752DK [NXP]
Audio processor - companding, VOX and amplifier section; 音频处理器 - 扩， VOX和放大器部分
| 型号： | SA5752DK |
| 厂家： | 
NXP |
| 描述： | Audio processor - companding, VOX and amplifier section |
| 文件： | 总13页 (文件大小：115K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RF COMMUNICATIONS PRODUCTS
SA5752
Audio processor – companding, VOX and
amplifier section
Product Specification
Replaces data of December 6, 1993
1997 Nov 07
IC17 Data Handbook
Philip s Se m ic ond uc tors
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
DESCRIPTION
PIN CONFIGURATION
The SA5752 is a high performance low power audio signal
processing system especially designed to meet the requirements for
small size and low voltage operation of hand-held equipment. The
SA5752 subsystem includes a low noise microphone preamplifier
with adustable gain, a noise cancellation switching amplifier with
adjustable threshold, a voice operated transmitter (VOX) switch,
VOX control, an audio compressor with buffered input, audio
expandor, and an internal bandgap voltage regulator with power
down capability. When used with Philips Semiconductors’ SA5753,
the complete audio processing function of an AMPS or TACS
cellular telephone is easily implemented. The system also meets
the requirements of the proposed NAMPS or NTACS specifications.
The SA5752 can also be used without the SA5753 in a wide variety
of radio communications applications.
DK PACKAGE
1
2
20
19
MIC
IN
NCAN
OUT
PREAMP
RECT
COMP
IN
GRES
3
18 COMP
GRES
CAP3
CAP1
OUT
4
NCAN
COMP
COMP
COMP
VOX
17
16
15
14
13
CAP
OUT
5
VOX
6
VOX
SA5752
TR
CAP2
7
GND
CTL
8
V
HPDN
REF
9
V
12
11
EXP
IN
CC
10
EXP
EXP
OUT
CAP
FEATURES
• Operating voltage range: 2V to 5.5V
SR00659
• Miniature SSOP
Figure 1. Pin Configuration
• High performance
BENEFITS
• Adjustable VOX and noise cancellation threshold
• Adjustable gain preamplifier
• Audio companding
• Very compact applications
• Long battery life in portable equipment
• Complete cellular audio function with the SA5753
• ESD protected
APPLICATIONS
• Open collector VOX output
• Logic inputs CMOS compatible
• Power down mode
• Cellular radio
• Mobile communications
• High performance cordless telephones
• 2-way radio
• Few external components
• Meets AMPS/TACS/NAMPS/NTACS requirements
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
20-Pin Plastic Shrink Small Outline Package (SSOP)
-40 to +85°C
SA5752DK
SOT266-1
2
1997 Nov 07
853-1721 18666
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
PIN DESCRIPTIONS
PIN NO.
SYMBOL
MIC
DESCRIPTION
1
2
Microphone input
IN
PREAMP
Preamplifier gain resistor
Rectifier gain resistor
GRES
3
RECT
GRES
4
NCAN
Noise cancellation timing capacitor
Voice operated transmission output
CAP
OUT
5
VOX
6
VOX
Voice operated transmission threshold resistor
Ground
TR
7
GND
8
V
REF
Reference voltage
9
V
CC
Positive supply
10
11
12
13
14
15
16
17
18
19
20
EXP
EXP
Expandor timing capacitor
Expandor output
CAP
OUT
EXP
Expandor input
IN
HPDN
VOX
Hardware power-down
Voice operated transmission control
Compressor capacitor 2 DC block
Compressor output
CTL
COMP
CAP2
COMP
OUT
CAP1
CAP3
COMP
COMP
Compressor timing capacitor 1
Compressor capacitor 3 DC block
Compressor input
COMP
IN
NCAN
Noise cancellation output
OUT
BLOCK DIAGRAM
20
19
18
17
16
15
14
13
12
11
BUFFER
EXPANDOR
COMPANDOR
SA5752
NOISE
CANCEL
VOX
PREAMP
BANDGAP
VOLTAGE REF
1
2
3
4
5
6
7
8
9
10
SR00660
Figure 2. Block Diagram
3
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
V
V
V
Power supply voltage range
-0.3 to 6
CC
IN
Voltage applied to any other pin
Storage temperature
-0.3 to (V +0.3)
V
CC
o
T
-65 to +150
-40 to +85
C
STG
T
Ambient operating temperature
°C
A
DC ELECTRICAL CHARACTERISTICS
o
T = 25 C, V = +3.0V, 0dB = 77.5mV . See test circuit, Figure 6.
A
CC
RMS
LIMITS
SYMBOL
PARAMETER
Supply voltage
TEST CONDITIONS
UNIT
MIN
TYP
MAX
5.5
4
V
CC
2.7
3.0
V
No signal
Power down mode
3.1
125
4.0
mA
µA
I
Supply current
CC
Load impedance
Z
L
pins NCAN
, EXP
50
10
kΩ
kΩ
OUT
OUT
1
COMP
OUT
Input impedance
Z
IN
COMP , MIC
40
50
60
50
kΩ
kΩ
µA
mV
IN
IN
2
EXP
2.0
IN
Noise cancellation current
Pin 6
25
3
V
OS
DC offset NCAN
-50
–3.0
OUT
NOTES:
1. Compressor is tested in production with 50kΩ load.
2. Not tested in production.
3. Offset values are identical for both gain states of noise reduction circuit.
4. Operational down to V = 2V.
CC
AC ELECTRICAL CHARACTERISTICS
o
T = 25 C, V = +3.0V, 0dB level = 77.5mV
. See test circuit, Figure 6.
A
CC
RMS
LIMITS
TYP
SYMBOL
PARAMETER
Preamplifier gain range
Preamplifier voltage gain 0dB
Preamplifier voltage gain 40dB
TEST CONDITIONS
UNIT
MIN
MAX
0
-1.0
39.0
40
1.0
41.0
dB
dB
dB
Pin 2 open
Pin 2 AC ground
0
40
Pin 2 AC grounded
RS = 50kΩ
unweighted 20Hz-20kHz
Preamplifier noise density
7
nV/√Hz
weighted CCIR
DIN45405 20-20kHz
8
nV/√Hz
Switch amplifier gain
9
10
11
dB
1
Compandor 1kHz, all tests
COMP
COMP
COMP
COMP
COMP
Compressor error at -21dB output level
Compressor error at -10dB output level
Compressor error at 0dB output level
Compressor error at +5dB output level
Compressor error at +10dB output level
Expandor error at -42dB output level
Expandor error at -21dB output level
Expandor error at -10dB output level
Input level = -42dB
Input level = -20dB
Input level = 0dB
–1.0
-1.0
-1.5
-1.0
-1.0
–1.0
-1.0
-1.0
–0.16
–0.11
+0.1
1.0
1.0
1.5
1.0
1.0
1.0
1.0
1.0
dB
dB
dB
dB
dB
dB
dB
dB
OUT
OUT
OUT
OUT
OUT
Input level = +10dB
Input level = +20dB
Input level = -21dB
Input level = -10.5dB
Input level = -5dB
+0.04
+0.02
–0.12
+0.1
EXP
EXP
EXP
OUT
OUT
OUT
+0.03
4
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
AC ELECTRICAL CHARACTERISTICS (Contineud)
LIMITS
TYP
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
MAX
MIN
-1.5
EXP
EXP
EXP
EXP
EXP
Expandor error at 0dB output level
Expandor error at +10dB output level
Expandor error at +20dB output level
Input level = 0dB
Input level = +5dB
Input level = +10dB
No signal
–0.2
1.5
1.0
dB
dB
dB
mV
mV
nF
OUT
OUT
OUT
OUT
OUT
-1.0
+0.03
–0.1
2
-1.0
1.0
Expandor V
-50.0
-100
+3.0
50.0
100
OS
Expandor output DC shift
No signal to 0dB
+2.0
Timing capacitors compandor
2200
THD
Total harmonic distortion
Compressor
1kHz, 0dB
BW=300-3kHz
0.2
0.1
1
1
1
1
%
%
%
1kHz, 0dB
BW=300-3kHz
Expandor
1kHz. Pin 2 open
output level = 0dB
NCAN
0.02
0.06
OUT
1kHz, Pin 2 open
output level = +20dB
%
VOX
Sink current
0.5
0.4
mA
OUT
Low level
High level
Open collector
0.5mA
I
L
=
V
V
V
CC
VOX
Input current
Low
-50
-10
0
–6.6
0
µA
µA
CTL
High
–0.02
+10
Input level
Low
High
0.3V
V
V
CC
0.7V
V
CC
CC
H
Input current
Low
-10
-10
0
–4.1
–0.2
+10
+10
µA
µA
PDN
High
Input level
Low
High
0.3V
V
V
CC
0.7V
V
CC
CC
Reference filter capacitor
10
µF
NOTE:
1. Measurements are relative to 0dB output.
2. Measurement is indicative of the output dynamic range capability.
5
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
Companding and Amplifier Section
Filter and Control Section
SA5753
SA5752
PREAMP
MICROPHONE
NOISE
CANCEL
TX
SUMMING
BANDPASS
AMP
AUDIO TO
TRANSMITTER
FILTER
GAIN
CONTROL
VOX
VOX
OUTPUT
TX
TX
LOW
PRE–
PASS
FILTER
EMPHASIS
COMPRESSOR
RX
DE–
EMPHASIS
RX
BANDPASS
FILTER
AUDIO FROM
RECEIVER
DEMODULATOR
EXPANDOR
DTMF
GENERATOR
HEADPHONE
PA
CLOCK
1.2MHz
2
I
C
ATTENUATOR
BUS
INTERFACE
PA
FROM SYSTEM
2
CONTROLLER I C BUS
SPEAKER
VOX CONTROL
TDA7050T
SR00661
Figure 3. Typical Configuration of Audio Processor (APROC) System Chip Set
6
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
RXCLOCK
5V
DEMOD DATA
TXEN
RXDATA
TXCLOCK
TXDATA
7.5V
5.0/0V
7.5/0V
DATA PROCESSOR
DATA BLOCK
POWER SUPPLY
DATA
DEMOD
RF BLOCK
POWER SUPPLY ENABLE
AUDIO BLOCK
LOGIC UNIT
MOD
VOX
8
2
I
C
SPEAKER
MIC
EAR
CONTROL UNIT
SR00653
Figure 4. Cellular Radio System
5V
DEMOD DATA
7.5V
5.0/0V
7.5/0V
DATA PROCESSOR
POWER SUPPLY
TXEN
DATA
DEMOD
RF BLOCK
POWER SUPPLY ENABLE
NE5750
NE5751
LOGIC UNIT
MOD
VOX
8
2
I
C
SPEAKER
MIC
RSSI
EAR
CONTROL UNIT
SR00654
Figure 5. APROC Application Diagram
7
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
SIDE TONE
PREAMP
NCAN
OUT
NOISE
CANCEL
MIC
IN
1
2
20
19
18
17
16
15
14
13
12
11
220nF
+
BUFFER
220nF
PREAMP
Avset
COMP
GRES
IN
220nF
4.7µF
39.2k
+
COMP
RECT
COMPRESSOR
CAP3
CAP1
GRES
3
220nF
220nF
VOX
+
+
NCAN
COMP
CAP
4
130k
5
1µF
2.2µF
COMP
OUT
VOX
OUT
+
2.2µF
VOX
TR
11.2k
REF
+
6
7
8
COMP
CAP2
VOX
GND
CTL
HPDN
V
+
10µF
BANDGAP
VOLTAGE REF
+
EXP
IN
V
9
CC
2.2µF
EXPANDOR
EXP
EXP
OUT
CAP
10
220nF
2.2µF
SR00662
Figure 6. SA5752 Test and Application Circuit
8
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
SR00663
Figure 7. Application Diagram for the Audio Processor
9
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
TYPICAL PERFORMANCE CHARACTERISTICS
Power Down Supply Current vs
Temperature and Supply Voltage
Supply Current vs Temperature and Supply Voltage
4.00
3.75
3.50
3.25
3.00
2.75
2.50
2.25
2.00
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
V
V
= 5.5V
= 3V
CC
CC
V
= 5.5V
CC
V
V
= 2.7V
= 2V
CC
CC
V
V
= 3V
CC
CC
= 2.7V
V
= 2V
CC
–50 –40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
–50 –40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
TEMPERATURE (°C)
THD vs Temperature for 3V Supply
Compandor Tracking Error vs Input Level
1.0
1.0
0.8
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.6
0.4
0.2
EXPANDOR
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
COMPRESSOR
COMPRESSOR
EXPANDOR
–45
15
–40 –35 –30
–20
–15 –10
–25
0
25
–5
5
10
20
–50 –40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
INPUT LEVEL (dB)
TEMPERATURE (°C)
Unity Gain Error vs Supply Voltage
Unity Gain Error vs Temperature
1.5
1.5
1.25
1.25
1.00
EXPANDOR
1.00
0.75
0.75
0.50
0.50
0.25
0.25
COMPRESSOR
EXPANDOR
0.00
0.00
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
COMPRESSOR
–50 –40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
SR00664
Figure 8. Typical Performance Characteristics
10
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor – companding, VOX and amplifier section
SA5752
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Noise Cancellation Switching Amplifier
DYNAMIC RESPSONSE
30.0mV/div
1
MIC
PIN 1
IN
30.0mV/div
4
NCAN
PIN 20
OUT
50.0ms/div
STOP MARKER:
START MARKER:
∆t:
11.960 ms
0.00000 s
11.960 ms
Voice Activated Transmitter (VOX)
DYNAMIC RESPSONSE
30.0mV/div
1
NCAN
PIN 20
OUT
1.00V/div
3
VOX
PIN 5
OUT
CTL
VOX
= LOW
50.0ms/div
STOP MARKER:
START MARKER:
∆t:
120.000 ms
0.00000 s
120.000 ms
SR00665
Figure 9. Typical Performance Characteristics (cont.)
11
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor — companding, VOX and amplifier section
SA5752
SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mm
SOT266-1
12
1997 Nov 07
Philips Semiconductors
Product specification
Audio processor — companding, VOX and amplifier section
SA5752
DEFINITIONS
Data Sheet Identification
Product Status
Definition
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
Objective Specification
Formative or in Design
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
Preliminary Specification
Product Specification
Preproduction Product
Full Production
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. PhilipsSemiconductorsmakesnorepresentationorwarrantythatsuchapplicationswillbesuitableforthespecifiedusewithoutfurthertesting
or modification.
LIFE SUPPORT APPLICATIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
orsystemswheremalfunctionofaPhilipsSemiconductorsandPhilipsElectronicsNorthAmericaCorporationProductcanreasonablybeexpected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Philips
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