TEA1112AT NXP Semiconductors, TEA1112AT Datasheet - Page 2

• Manufacturer Part Number: TEA1112AT
• Manufacturer: NXP Semiconductors

Specifications of TEA1112AT

• Max Transmitter Gain: 53dB
• Receiver Gain (max): 32.7dB
• Operating Temp Range: -25C to 75C
• Package Type: SSOP
• Pin Count: 16
• Operating Current: 1.15mA
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
I
unless otherwise specified.
1997 Mar 26
line
I
I
V
I
V
G
line
LED(max)
CC
G
G
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 (MUTE for
TEA1112 and MUTE for TEA1112A)
Receiving amplifier for dynamic, magnetic or
piezo-electric earpieces
AGC line loss compensation for microphone and
earpiece amplifiers
LED on-hook/off-hook status indication
Microphone mute function (MMUTE for TEA1112 and
MMUTE for TEA1112A).
LN
CC
Low voltage versatile telephone
transmission circuits with dialler interface
vtrx
SYMBOL
= 15 mA; V
vtrx
vtxm
EE
line current operating range
maximum supply current available
DC line voltage
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 ; 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 TEA1112; TEA1112A are bipolar integrated circuits
that perform all speech and line interface functions
required in fully electronic telephone sets. They perform
electronic switching between speech and dialling. The ICs
operate 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 a typical value of 19.5 mA) is available to drive
an LED which indicates the on-hook/off-hook status.
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.
= 18 mA
> 76 mA
= 6 mV (RMS)
= 85 mA
= 2.9 V
Line powered telephone sets, cordless telephones, fax
machines and answering machines.
EE
= 2 mV (RMS)
CONDITIONS
; Z
line
= 600 ; f = 1 kHz; T
TEA1112; TEA1112A
11
1
3.35
38.8
19.2
MIN.
amb
0.5
19.5
3.65
1.15
2.9
5.8
80
Product specification
TYP.
= 25 C;
140
11
3.95
1.4
51.8
31.2
MAX.
mA
mA
mA
mA
V
mA
V
dB
dB
dB
dB
UNIT