KL6270

TECHNICAL DATA
GAIN CONTROLLED MICROPHONE
FIER/VOGAD
PREAMPLI-
The KL6270 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
Rev. 00
KL6270
Preamp
Output
Main Amp
Input
UCC
Preamp
Input
Main Amp
Output
Preamp Input
OV
AGC Time
Output
AGC
DETECTOR
Fig.3 KL6270 block diagram
Rev. 00
KL6270
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
Rev. 00
KL6270
Rev. 00
KL6270
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:
Rev. 00