TEA1064B Selling Leads, Price trend, TEA1064B DataSheet download, circuit diagram from SeekIC.com

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 pre...

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SeekIC No. : 004517227 Detail

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· Pro...

TEA1064B Data Sheet

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Part Number:: TEA1064B
Supply Ability:: 5000

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Product Details

Description

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 kW) for dynamic, magnetic or piezo-electric microphones
· Asymmetrical high-impedance input (32 kW) 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 V_EE2) can be connected either to V_EE1 or SLPE.

Pinout

Connection Diagram

Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
V_LN	positive line voltage continuous		-	12	V
V_LN	repetitive line voltage during switch-on line interruption		-	13.2	V
V_LN	repetitive peak line voltage one 1 ms pulse per 5 s	R9 = 20 W; R10 = 13 W; see Fig.22	-	28	V
I_LN	line current TEA1064B TEA1064BT	R9 = 20 W note 1 note 1	- -	140 140	mA mA
V_i	input voltage on pins other than LN		V_EE1-0.7	V_CC+0.7	V
P_tot	total power dissipation TEA1064B TEA1064BT	R9 = 20 W; note 2	- -	717 555	mW mW
T_amb	operating ambient temperature		-25	+75	°C
T_stg	storage temperature		-40	+125	°C
T_j	junction temperature		-	+125	°C

Notes
1. Mostly dependent on the maximum required T_amb and on the voltage between LN and SLPE. See Figs 18 and 19 to determine the current as a function of the required voltage and the temperature.
2. Calculated for the maximum ambient temperature specified T_amb = 75 °C and a maximum junction temperature of 125 °C.

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.

TEA1064B

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