NJRC NJM2783V Monaural microphone amplifier with alc Datasheet

NJM2783
Monaural Microphone Amplifier with ALC
"GENERAL DESCRIPTION
The NJM2783 is a monaural microphone amplifier with
auto level control function to avoid distortion due to clipping.
The voltage gain and the limit level are adjustable by
external resistors.
It is suitable for mini component audio system, home
audio system, karaoke and others.
"PACKAGE OUTLINE
NJM2783V
" FEATURES
• Operating Voltage
• Monaural Microphone Amplifier
• Auto level control (ALC) function
(Adjustable the limit level
by external resistors
• Adjustable the voltage gain
by external resistors
• Additional Gain Amplifier
• Built-in Buffer Amplifier
• Low Equivalent Input Noise
• Carefully designed to reject RF noise
• Bipolar Technology
• Package Outline
+2.7 to +13.0V
200mVrms to 2Vrms)
+20 to +63dB (RSENSE=OPEN)
0dB/+20dB switchable
1µVrms typ.
SSOP14
" BLOCK DIAGRAM
IN
GAIN SW
INT
SENSE
VREF
V+
Detector
Microphone Amprifier
GND
Bias
Additional Gain
0dB/+20dB
Buffer Amplifier
100k
100k
VCR
GAIN1
Version 7.0E
GAIN2
DET
OUT
BUFFIN
BUFFGAIN BUFFOUT
–1–
NJM2783
"PIN CONFIGURATION
SSOP14
–2–
No.
Symbol
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GAIN1
GAIN2
DET
OUT
BUFFIN
BUFFGAIN
BUFFOUT
GND
V+
VREF
SENSE
INT
GAIN SW
IN
1
14
2
13
3
12
4
11
5
10
6
9
7
8
Function
Microphone Amp Gain Setting 1
Microphone Amp Gain Setting 2
Detector Input
Microphone Amp Output
Buffer Input
Buffer Gain Setting
Buffer Output
Ground
Power Supply
Reference Voltage
Limit Level Setting
Recovery Time Setting
Gain Setting
Microphone Input
Version 7.0E
NJM2783
"ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
SYMBOL
Power Supply Voltage
V
Power Dissipation
+
RATING
UNIT
+14
V
1)
450*
PD
+ 2)
mW
Maximum Input Voltage
VIMAX
0~V *
V
Operating Temperature Range
Topr
-40 ~ +85
°C
Storage Temperature Range
Tstg
-40 ~ +125
°C
1)
* EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 2layers, FR-4) mounting
2)
*
Don’t put Input Voltage more than Power Supply Voltage.
"RECOMMENDED OPERATING VOLTAGE RANGE (Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
-
2.7
9.0
13.0
V
MIN.
TYP.
MAX.
UNIT
+
Operating Voltage Range
V
"ELECTRICAL CHARACTERISTICS
+
#POWER SUPPLY (Ta=25°C, V =9.0V unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
Operating Current
ICC
No signal
-
3.5
6.0
mA
Reference Voltage
VREF
No signal
4.2
4.5
4.8
V
MIN.
TYP.
MAX.
UNIT
60
63
66
dB
40
43
46
dB
2.0
2.4
-
Vrms
0.7
1.0
1.3
Vrms
0.7
1.0
1.3
Vrms
1.6
2.0
2.4
Vrms
-
-120
(1.0)
-110
(3.2)
dBV
(µVrms)
-
-
1
%
-
-35
-20
dB
MIN.
TYP.
MAX.
UNIT
#AC CHARACTERISTICS
+
(Ta=25°C, V =9.0V, VIN=0.7mVrms, f=1kHz, RG1=330Ω, RG2=47kΩ, RSENSE=OPEN, RL=4.7kΩ,
GAIN SW=+20dB unless otherwise specified)
PARAMETER
SYMBOL
Voltage Gain 1
GV1
Voltage Gain 2
GV2
Maximum Output Voltage
VOM
ALC Level 1
VLIM1
ALC Level 2
VLIM2
ALC Off
VOFF
Equivalent Input Noise Voltage
VNO
Total Harmonic Distortion
Power Supply Ripple Rejection
TEST CONDITION
GAIN SW=0dB
THD=1%
VIN=1.4mVrms
RSENSE=47kΩ
VIN=40mVrms
RSENSE=47kΩ
VIN=1.4mVrms
Rg=0Ω, A-weighted
THD+N
BW=400-30kHz
Vripple=100mVrms, f=1kHz
RR
+
#CONTROL CHARACTERISTICS (Ta=25°C, V =9.0V unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
+
V
High Level Input Voltage
VIH
-
2.0
-
V
Low Level Input Voltage
VIL
-
0
-
0.5
V
Control Current
ISW
-
-
100
µA
Version 7.0E
VIH=5V
–3–
NJM2783
"CONTROL TERMINAL EXPLANATION
GAIN SW (13 pin)
MODE
STATUS
NOTE
0dB
L
The gain of microphone amplifier is not increased.
+20dB
H
The gain of microphone amplifier is increased +20dB.
"TEST CIRCUIT
V+
VIN
0.47µF V
14
V IH
IL
13
IN
12
GAIN SW
RSENSE
1µF
11
INT
10
SENSE
10µF
10µF
9
VREF
GAIN1
1
2
RG2
RG1
10µF
–4–
GAIN2
DET
GND
Bias
OUT
3
8
V+
Detector
V+
4
BUFFIN
5
BUFFGAIN
6
BUFFOUT
7
0.47µF
1µF
4.7µF
4.7µF
VR
10k Ω
V
4.7k Ω
Version 7.0E
NJM2783
"APPLICATION CIRCUIT
V+
V+
INPUT
0.47µF
14
1µF
13
IN
12
GAIN SW
47kΩ
11
INT
10
SENSE
10µF
10µF
9
VREF
GAIN1
1
2
47k Ω
330Ω
10µF
Version 7.0E
GAIN2
DET
GND
Bias
OUT
3
8
V+
Detector
V+
4
BUFFIN
5
BUFFGAIN
6
BUFFOUT
7
0.47µF
1µF
4.7µF
4.7µF
VR
10kΩ
OUTPUT
–5–
NJM2783
! TERMINAL DESCRIPTION
PIN NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
1
GAIN1
V+
V+
V+/2
500
Microphone Amp Gain Setting 1
TERMINAL
DC
VOLTAGE
20p
V+
V+
V+
50
V+
GAIN2
200
Microphone Amp Gain Setting 2
V+/2
50
2
V+
3
DET
Detector Input
V+
24k
V+/2
V+
V+
V+
50
V+
OUT
200
Microphone Amp Output
V+/2
50
4
V+
BUFFIN
1k
Buffer Input
100k
5
V+
V+/2
10p
VREF
–6–
Version 7.0E
NJM2783
! TERMINAL DESCRIPTION
PIN NO.
SYMBOL
FUNCTION
V+
6
BUFFGAIN
TERMINAL
DC
VOLTAGE
EQUIVALENT CIRCUIT
V+
V+/2
1k
Buffer Gain Setting
10p
V+
50
V+
BUFFOUT
V+/2
Buffer Output
50
7
V+ V+
V+
V+
V+
200k
44k
V+
VREF
200
Reference Voltage
V+/2
200
40k
200k
10
V+
11
SENSE
V+
V+
V+
V+
200
Limit Level Setting
V+
0V
200
V+
V+
V+
V+
200
12
Version 7.0E
INT
Recovery Time Setting
0V
–7–
NJM2783
! TERMINAL DESCRIPTION
PIN NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
GAIN SW
V+
200
Gain Setting
150k
0V
275k
13
TERMINAL
DC
VOLTAGE
V+
IN
500
Microphone Input
100k
14
V+
0V
20p
VREF
–8–
Version 7.0E
NJM2783
! TYPICAL CHARACTERISTICS
Supply Current vs. Supply Voltage
Supply Current vs. Temperature
No Signal, RSENSE =OPEN, GAIN SW=+20dB
No Signal, RSENSE =OPEN, GAIN SW=+20dB
6
6
5
5
Supply Current [mA]
Supply Current [mA]
Ta=85oC
4
Ta=25oC
3
Ta=-40oC
2
1
4
V+=13V
3
V+=9V
V+=2.7V
2
1
0
0
0
2
4
6
8
10
12
14
-50
-25
0
25
50
125
Reference Voltage vs. Supply Voltage
Reference Voltage vs. Temperature
No Signal, RSENSE =OPEN, GAIN SW=+20dB
8
8
Ta=-40oC
V+=13V
7
7
Ta=25oC
6
Reference Voltage [V]
6
Reference Voltage [V]
100
Temperature [ oC]
No Signal, RSENSE =OPEN, GAIN SW=+20dB
5
Ta=85oC
4
3
V+=9V
5
4
3
2
2
1
1
0
V+=2.7V
0
0
2
4
6
8
10
12
14
-50
-25
0
25
50
75
100
Supply Voltage [V]
Temperature [ oC]
Voltage Gain vs. Frequency
Voltage Gain vs. Frequency
V +=9V, V IN=0.7mVrms, RG1=330Ω, RG2=47kΩ
RSENSE=OPEN, GAIN SW=+20dB
80
Ta=85oC
50
Voltage Gain [dB]
Ta=25oC
60
Ta=-40oC
50
125
V +=9V, V IN=10mVrms, R1=1kΩ, R2=47kΩ
GAIN SW=0dB
60
Ta=85oC
70
Voltage Gain [dB]
75
Supply Voltage [V]
Ta=25oC
40
Ta=-40oC
30
40
20
10
100
1000
Frequency [Hz]
Version 7.0E
10000
100000
10
100
1000
10000
100000
Frequency [Hz]
–9–
NJM2783
! TYPICAL CHARACTERISTICS
Output Voltage vs. Input Voltage
10
Output Voltage vs. Input Voltage
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
GAIN SW=+20dB, Ta=25oC
10
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
GAIN SW=0dB, Ta=25oC
RSENSE =100kΩ
1
RSENSE =100kΩ
Output Voltage [Vrms]
Output Voltage [Vrms]
1
RSENSE =47kΩ
0.1
RSENSE =22kΩ
RSENSE =10kΩ
RSENSE =47kΩ
RSENSE=22kΩ
0.1
0.01
0.001
0.00001
10
RSENSE=10kΩ
0.01
0.0001
0.001
0.01
0.1
1
0.001
0.00001
10
0.0001
0.001
0.01
Output Voltage vs. Input Voltage
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
RSENSE =47kΩ, GAIN SW=+20dB
10
Ta=85oC
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
RSENSE =47kΩ, GAIN SW=0dB
Ta=85oC
Ta=25oC
Output Voltage [Vrms]
Output Voltage [Vrms]
1
Ta=-40oC
0.1
Ta=-40oC
0.1
0.01
0.01
0.0001
0.001
0.01
0.1
1
10
0.001
0.00001
0.0001
Input Voltage [Vrms]
0.01
0.1
10
THD+N vs. Input Voltage
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
RSENSE =47kΩ, GAIN SW=+20dB, BW=400-30kHz
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
RSENSE =47kΩ, GAIN SW=0dB, BW=400-30kHz
100
10
Ta=85oC
Ta=25oC
1
0.1
Ta=85oC
Ta=25oC
1
0.1
Ta=-40oC
Ta=-40oC
0.0001
0.001
0.01
0.1
Input Voltage [Vrms]
– 10 –
1
THD+N vs. Input Voltage
THD+N [%]
THD+N [%]
0.001
Input Voltage [Vrms]
10
0.01
0.00001
10
Output Voltage vs. Input Voltage
1
100
1
Input Voltage [Vrms]
Ta=25oC
0.001
0.00001
0.1
Input Voltage [Vrms]
1
10
0.01
0.00001
0.0001
0.001
0.01
0.1
1
10
Input Voltage [Vrms]
Version 7.0E
NJM2783
! TYPICAL CHARACTERISTICS
100
THD+N vs. Output Voltage
THD+N vs. Output Voltage
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
RSENSE =OPEN, GAIN SW=+20dB, BW=400-30kHz
V +=9V, f=1kHz, RG1=330Ω, RG2=47kΩ
RSENSE =OPEN, GAIN SW=0dB, BW=400-30kHz
100
10
THD+N [%]
THD+N [%]
10
Ta=-40oC
1
Ta=25oC
0.1
Ta=-40oC
1
0.1
Ta=85oC
0.01
0.01
0.1
1
Ta=25oC
10
Ta=85oC
0.01
0.01
0.1
Output Voltage [Vrms]
Input Noise Voltage vs. Temperature
Control Characteristics
Rg=0Ω, RSENSE =OPEN, GAIN SW=+20dB
V +=9V, f=1kHz, RG1=330Ω,RG2=47kΩ
V IN=0.7Vrms, RSENSE =47kΩ, Ta=25oC
-100
2
10
1.5
Output Voltage [Vrms]
Equivalent Input Noise Voltage [dBV]
1
Output Voltage [Vrms]
-110
V+=2.7V
-120
1
0.5
V+=9V
V+=13V
-130
-50
0
-25
0
25
50
Temperature [ oC]
Version 7.0E
75
100
125
0
0.5
1
1.5
2
2.5
3
GAIN SW Input Voltage [V]
– 11 –
NJM2783
! TYPICAL CHARACTERISTICS
Attack Response (C RECOVER=1uF)
Attack Response (CRECOVER=2.2uF)
V+=9V, VIN=0.5mVrms to 5mVrms, f=1kHz, Ta=25 oC
V+=9V, VIN=0.5mVrms to 5mVrms, f=1kHz, Ta=25 oC
2
TAT T ACK =2msec. (The time to settle to +1dB)
1.5
1.5
1
1
Output Voltage [V]
Output Voltage [V]
2
0.5
0
-0.5
0.5
0
-0.5
-1
-1
-1.5
-1.5
-2
TAT T ACK =3msec. (The time to settle to +1dB)
-2
-10
0
10
20
30
40
-10
0
Time [msec.]
30
40
Attack Response (CRECOVER=4.7uF)
Attack Response (C RECOVER=10uF)
V+=9V, VIN=0.5mVrms to 5mVrms, f=1kHz, Ta=25 oC
2
TAT T ACK=4msec. (The time to settle to +1dB)
1.5
1.5
1
1
Output Voltage [V]
Output Voltage [V]
20
V+=9V, VIN=0.5mVrms to 5mVrms, f=1kHz, Ta=25 oC
2
0.5
0
-0.5
TAT T ACK=5msec. (The time to settle to +1dB)
0.5
0
-0.5
-1
-1
-1.5
-1.5
-2
-2
-10
0
10
20
Time [msec.]
– 12 –
10
Time [msec.]
30
40
-10
0
10
20
30
40
Time [msec.]
Version 7.0E
NJM2783
! TYPICAL CHARACTERISTICS
Recovery Response (C RECOVER=1uF)
Recovery Response (CRECOVER=2.2uF)
V+=9V, VIN=1.58mVrms to 0.5mVrms, f=1kHz, Ta=25 oC
V+=9V, VIN=1.58mVrms to 0.5mVrms, f=1kHz, Ta=25 oC
1.5
1.5
TRECOVER=0.28sec. (The time to recover to -1dB)
1
Output Voltage [V]
Output Voltage [V]
1
TRECOVER=0.63sec. (The time to recover to -1dB)
0.5
0
-0.5
-1
0.5
0
-0.5
-1
-1.5
-0.5
0
0.5
1
1.5
2
-1.5
-0.5
2.5
0
0.5
Time [sec.]
1.5
2
2.5
Recovery Response (CRECOVER=4.7uF)
Recovery Response (C RECOVER=10uF)
V+=9V, VIN=1.58mVrms to 0.5mVrms, f=1kHz, Ta=25 oC
V+=9V, VIN=1.58mVrms to 0.5mVrms, f=1kHz, Ta=25 oC
1.5
1.5
TRECOVER=1.45sec. (The time to recover to -1dB)
0.5
0
-0.5
-1
-1.5
-0.5
TRECOVER=2.93sec. (The time to recover to -1dB)
1
Output Voltage [V]
1
Output Voltage [V]
1
Time [sec.]
0.5
0
-0.5
-1
0
0.5
1
Time [sec.]
1.5
2
2.5
-1.5
-0.5
0
0.5
1
1.5
2
2.5
Time [sec.]
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Version 7.0E
– 13 –
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