Replacement of
TEA1062/TEA1062A
MIK1062/MIK1062A
Low Voltage Transmission
ICs with dialer interface
June 1998 revised October 1999
Features
Low line voltage; operates down to 1.6 V (excluding
polarity guard)
Voltage regulator with adjustable static resistance
Provides a supply for external circuits
Symmetrical high-impedance inputs (64 k) dynamic,
magnetic or piezoelectric microphones
Asymmetrical high-impedance input (32 k) for electret
microphones
DTMF signal input with confidence tone
Mute input for pulse or DTMF dialling
- MIK1062: active HIGH (MUTE)
- MIK1062A: active LOW (MUTE)
Receiving amplifier for dynamic, magnetic or piezoelectric
earpiece amplifiers
Large gain setting ranges on microphone and earpiece
amplifiers
Line loss compensation (line current dependent) for
microphone and earpiece amplifiers
Gain control curve adaptable to exchange supply
DC line voltage adjustment facility.
The MIK1062 and MIK1062A are integrated circuits that
perform all speech and line interface functions required in fully
electronic telephone sets. They perform electronic switching
between dialling and spech. The ICs operate at line voltage
down to 1.6 V DC (with reduced performance) to facilitate the
use of more telephone sets connected in parallel.
All statements and values refer to all versions
Quick Reference Data
Symbol Parameter
Conditions
Min
Typ
Max
Unit
V
LN
Line
voltage
I
line
= 15mA
3.55
4.0
4.25
V
I
line
Operating line current normal operation
11
140
mA
I
CC
Internal supply current
V
CC
= 2.8 V
0.9
1.35
mA
V
CC
Supply voltage for peripherals
MIK1062
MIK1062A
I
line
= 15mA
I
P
= 1.2 mA ; MUTE =
HIGH
I
P
= 0 mA ; MUTE = HIGH
I
P
= 1.2 mA ; MUTE =
LOW
I
P
= 0 mA ; MUTE = LOW
2.2
2.2
2.7
3.4
2.7
3.4
V
G
V
Voltage gain
Microphone amplifier
Receiving amplifier
I
line
= 15mA
50.5
29.5
53.5
32.5
dB
T
amb
Operating ambient temperature
-25
+75
o
C
Pinning
Symbol Pin
Description
LN
1
positive line terminal
GAS1
2
gain adjustment; transmitting amplifier
GAS2
3
gain adjustment; transmitting amplifier
QR
4
non-inverting output; receiving amplifier
GAR
5
gain adjustment; receiving amplifier
MIC
-
6
inverting microphone input
MIC
+
7
non-inverting microphone input
STAB 8 current
stabilizer
V
EE
9
negative line terminal
IR
10
receiving amplifier input
DTMF
11
dual-tone multi-frequency input
MUTE
12
mute input (see note 1)
V
CC
13
positive supply decoupling
REG
14
voltage regulator decoupling
AGC
15
automatic gain control input
SLPE
16
slope (DC resistance) adjustment
Note1: Pin 12 is active HIGH (MUTE) for MIK1062
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