telephone transmission. TEA1064B Datasheet

TEA1064B transmission. Datasheet pdf. Equivalent


Part TEA1064B
Description Low voltage versatile telephone transmission
Feature INTEGRATED CIRCUITS DATA SHEET TEA1064B Low voltage versatile telephone transmission circuit with .
Manufacture NXP
Datasheet
Download TEA1064B Datasheet

INTEGRATED CIRCUITS DATA SHEET TEA1064B Low voltage versat TEA1064B Datasheet
INTEGRATED CIRCUITS DATA SHEET TEA1064B Low voltage versat TEA1064BT Datasheet
Recommendation Recommendation Datasheet TEA1064B Datasheet




TEA1064B
INTEGRATED CIRCUITS
DATA SHEET
TEA1064B
Low voltage versatile telephone
transmission circuit with dialler
interface and transmit level
dynamic limiting
Product specification
File under Integrated Circuits, IC03A
March 1994



TEA1064B
Philips Semiconductors
Product specification
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
TEA1064B
FEATURES
Low DC line voltage; operates down to 1.8 V (excluding
polarity guard)
Voltage regulator with low voltage drop and adjustable
static resistance
DC line voltage adjustment facility
Provides a supply for external circuits
Dynamic limiting (speech-controlled) in transmit
direction prevents distortion of line signal and sidetone
Symmetrical high-impedance inputs (64 k) for
dynamic, magnetic or piezo-electric microphones
Asymmetrical high-impedance input (32 k) for electret
microphones
DTMF signal input
Confidence tone in the earpiece during DTMF dialling
Mute input for disabling speech during pulse or DTMF
dialling
Power-down input for improved performance during
pulse dial or register recall (flash)
Receiving amplifier for dynamic, magnetic or
piezo-electric earpieces
Large amplification setting ranges on microphone and
earpiece amplifiers
Line loss compensation (line current dependent) for
microphone and earpiece amplifiers (not used for DTMF
amplifier)
Gain control curve adaptable to exchange supply
Automatic disabling of the DTMF amplifier in
extremely-low voltage conditions
Microphone MUTE function available with switch
MUTE, POWER-DOWN and DTMF input reference (pin
VEE2) can be connected either to VEE1 or SLPE.
GENERAL DESCRIPTION
The TEA1064B is a bipolar integrated circuit that performs
all the speech and line interface functions required in fully
electronic telephone sets. It performs electronic switching
between dialling and speech. The IC operates at line
voltages down to 1.8 V DC (with reduced performance) to
facilitate the use of more telephone sets connected in
parallel. The transmit signal on the line is dynamically
limited (speech-controlled) to prevent distortion at high
transmit levels of both the sending signal and the sidetone.
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
TEA1064B
TEA1064BT
PINS
20
20
Notes
1. SOT146-1; 1998 Jun 18.
2. SOT163-1; 1998 Jun 18.
PIN POSITION
DIL
mini-pack
PACKAGE
MATERIAL
plastic
plastic
CODE
SOT146(1)
SO20; SOT163A(2)
March 1994
2





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