KODENSHI KK6270

TECHNICAL DATA
GAIN CONTROLLED MICROPHONE
FIER/VOGAD
PREAMPLI-
The KK6270 is a silicon integrated circuit combining the functions of audio amplifier and voice operated gain adjusting device (VOGAD).
It is designed to accept signals from a low sensitivity microphone and to provide an essentially constant output
signal for a 50dB range of input. The dynamic range, attack and decay times are controlled by external components.
FEATURES
• Constant Output Signal
• Fast Attack
• Low Power Consumption
• Simple Circuitry
N – index of DIP
8
APPLICATIONS
• Audio AGC Systems
• Transmitter Overmodulation Protection
• Tape recorders
1
D – index of SOIC
8
1
Tamb = -30ºC - +70ºС for any type of package
QUICK REFERENCE DATA
• Supply Voltage: 4.5V to 10V
• Voltage Gain: 52dB
Fig.1
ABSOLUTE MAXIMUM RATINGS
• Supply Voltage: 12V
• Storage Temperature: -550C to +1250C
PIN CONNECTION
AGC Time Const
1
8
Main Amp Output
Preamp Output
2
7
Main Amp Input
3
6
OV
4
5
Preamp Input
U CC
Preamp Input
Fig.2
1
KK6270
Preamp
Output
Main Amp
Input
UCC
Preamp
Input
Main Amp
Output
Preamp Input
OV
AGC Time
Output
AGC
DETECTOR
Fig.3 KK6270 block diagram
2
KK6270
ELECTRICAL CHARACTERISTICS
(UCC=6V, FI=1kHz, Tamb=-30ºC to +85ºC)
Characteristics
Conditions
Value
Min
Supply current
Input impendance
Pin 5 or 6
Differential input impendance
Units
Typ.
Max
5
10
mA
150
Ohm
300
Ohm
dB
Voltage gain
72mkV rms input pin 4
40
52
Output level
4mV rms input
pin 4
55
90
140
mV rms
THD
90mV rms input
pin 4
2
5
%
Equivalent noise input
voltage
FI=400Гц до
25kHz
1
mkV
RI=300Ohm
3
KK6270
2.2u
+6 V
4.7n
10u
1M
47u
OUTPUT
1
8
2
7
3
6
4
5
INPUT
INPUT
1kOhm min LOAD
22k
100n
N. B.
If input not AC coupled the resistance
between pins 4 and 5 must be less than 10 Ohms
Fig.4 KK6270 test and application circuit
EXTERNAL
4.7n
10k
EXTERNAL
680
2.2u
8
2
7
10 kOm
Voltage gain = 680 Om
Upper frequency response 10kOm/4.7nF = 3kHz
Lower frequency response 680 Om/2.2uF = 300Hz
Fig.5 KK6270 frequency response
4
KK6270
N SUFFIX PLASTIC DIP
(MS – 001BA)
A
Dimension, mm
5
8
B
1
4
MIN
MAX
A
8.51
10.16
B
6.1
7.11
5.33
C
L
F
Symbol
C
D
0.36
0.56
F
1.14
1.78
-T- SEATING
PLANE
N
G
M
K
0.25 (0.010) M
J
H
D
T
NOTES:
1. Dimensions “A”, “B” do not include mold flash or protrusions.
Maximum mold flash or protrusions 0.25 mm (0.010) per side.
G
2.54
H
7.62
J
0°
10°
K
2.92
3.81
L
7.62
8.26
M
0.2
0.36
N
0.38
D SUFFIX SOIC
(MS - 012AA)
Dimension, mm
A
8
5
B
H
1
G
P
4
D
K
MIN
MAX
A
4.8
5
B
3.8
4
C
1.35
1.75
D
0.33
0.51
F
0.4
1.27
R x 45
C
-T-
Symbol
SEATING
PLANE
J
F
0.25 (0.010) M T C M
M
G
1.27
H
5.72
J
0°
8°
K
0.1
0.25
1. Dimensions A and B do not include mold flash or protrusion.
M
0.19
0.25
2. Maximum mold flash or protrusion 0.15 mm (0.006) per side
for A; for B ‑ 0.25 mm (0.010) per side.
P
5.8
6.2
R
0.25
0.5
NOTES:
5