TEA1113 Philips Semiconductors, TEA1113 Datasheet - Page 2

• Manufacturer Part Number: TEA1113
• Description: Low voltage versatile telephone transmission circuit with dialler interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
I
T
1997 Mar 27
line
I
I
V
V
I
V
G
amb
line
LED(max)
CC
Low DC line voltage; operates down to 1.6 V (excluding
polarity guard)
Voltage regulator with adjustable DC voltage
Provides a supply for external circuits
Symmetrical high impedance inputs (64 k ) for
dynamic, magnetic or piezo-electric microphones
Asymmetrical high impedance input (32 k ) for electret
microphones
DTMF input with confidence tone
MUTE input for pulse or DTMF dialling
Receiving amplifier for dynamic, magnetic or
piezo-electric earpieces
Dynamic limitation in the transmit direction to prevent
distortion of the transmit line and sidetone signals
AGC line loss compensation for microphone and
earpiece amplifiers
LED on-hook/off-hook status indication
Microphone mute function available with switch.
G
G
LN
LN(max)(p-p)
CC
Low voltage versatile telephone
transmission circuit with dialler interface
vtrx
SYMBOL
= 15 mA; V
vtrx
vtxm
= 25 C; unless otherwise specified.
EE
line current operating range
maximum supply current available
DC line voltage
maximum output voltage swing
(peak-to-peak value)
internal current consumption
supply voltage for peripherals
typical voltage gain range
gain control range for microphone and
receiving amplifiers with respect to
I
microphone amplifier gain reduction
line
= 0 V; R
microphone amplifier
receiving amplifier
= 15 mA
SLPE
PARAMETER
= 20 ; C
DLS
= 470 nF; AGC pin connected to V
normal operation
with reduced performance
I
I
V
I
V
V
I
2
line
line
p
line
CC
MIC
IR
= 0 mA
APPLICATION
GENERAL DESCRIPTION
The TEA1113 is a bipolar integrated circuit that performs
all speech and line interface functions required in fully
electronic telephone sets. It performs electronic switching
between speech and dialling. The IC operates at a line
voltage down to 1.6 V DC (with reduced performance) to
facilitate the use of telephone sets connected in parallel.
A current (proportional to the line current and internally
limited to 19.5 mA) is available to drive an LED which
indicates the on-hook/off-hook status.
The transmit signal on the line is dynamically limited to
prevent distortion at high transmit levels for both the
sending line and sidetone signals. The microphone
amplifier can be disabled during speech condition by
means of a microphone mute function.
All statements and values refer to all versions unless
otherwise specified.
= 4 mV (RMS)
= 18 mA
> 76 mA
= 85 mA
= 3.2 V
Line powered telephone sets, cordless telephones, fax
machines and answering machines.
= 2 mV (RMS)
CONDITIONS
EE
; Z
line
11
1
3.7
3.8
2.8
38.8
19.3
= 600 ; f = 1 kHz;
MIN.
0.6
19.5
4.0
4.65
1.3
3.2
5.8
80
Product specification
TYP.
TEA1113
140
11
4.3
1.6
51.8
31.3
MAX.
mA
mA
mA
mA
V
V
mA
V
dB
dB
dB
dB
UNIT