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UBA1707

Features: Line interface` Low DC line voltage; operates down to 1.2 V (excluding polarity guard)` Voltage regulator with adjustable DC voltage` DC mask for voltage or current regulation (CTR 21)` Line current limitation for protection` Electronic hook switch control input` Transmit amplifier with:...

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SeekIC No. : 004535282 Detail

UBA1707: Features: Line interface` Low DC line voltage; operates down to 1.2 V (excluding polarity guard)` Voltage regulator with adjustable DC voltage` DC mask for voltage or current regulation (CTR 21)` Li...

UBA1707 Data Sheet

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Part Number:
UBA1707
Supply Ability:
5000

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  • 1~5000
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Upload time: 2024/11/22

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Product Details

Description



Features:

Line interface
` Low DC line voltage; operates down to 1.2 V (excluding polarity guard)
` Voltage regulator with adjustable DC voltage
` DC mask for voltage or current regulation (CTR 21)
` Line current limitation for protection
` Electronic hook switch control input
` Transmit amplifier with:
   Symmetrical inputs
   Fixed gain
   Large signals handling capability.
` Receive amplifier with fixed gain
` Transmit and receive amplifiers AGC for line loss compensation.
Auxiliary amplifier
` Fixed gain.
Loudspeaker channel
` Dual inputs
` Rail-to-rail output stage for single-ended load drive
` High output current capability
` Dynamic limiter to prevent distortion
` Digital volume control
` Fixed maximum gain.
General purpose switches
` Three switches with open-collector.
3-wires serial bus interface
    Allows to control:
` DC mask (voltage or current regulation)
` Receive amplifier mute function
` AGC:
     On/off
     Slope
    Istart line current.
` Auxiliary amplifier mute function
` Loudspeaker channel:
   Input selection
   Volume setting
   Dynamic limiter inhibition
   Power-down mode.
` General purpose switches state
` Global power-down mode.
Supply
Operates with external supply voltage from 3.0 to 5.5 V.


Application

· Cordless base stations
· Answering machines
· Mains or battery-powered telephone sets


Pinout

Connection Diagram


Specifications

Symbol
Parameter
CONDITIONS
Min.
Max.
Unit
VCC
 supply voltage on pin VCC  
GND - 0.4
5.5
V
VLN
 positive continuous line voltage on pin LN  
GND - 0.4
12.0
V
repetitive line voltage during switch-on or
line interruption		  
GND - 0.4
13.2
V
VSWIn
 voltage on pins SWI1 SWI2 and SWI3 continuous
GND - 0.4
12.0
V
during switching
GND - 0.4
13.2
V
Vn(max)
 maximum voltage on all other pins  
GND - 0.4
VCC+4
V
ILN
 current sunk by pin LN see Figs 14 and 15
-
150
mA
ISWIn
 continuous current sunk by pins SWI1 and SWI2 bit SWCn = 1
-
20
mA
Ptot
 total power dissipation
UBA1707T
UBA1707TS		 Tamb = 75 °C; see Fig 14 and 15
-
-
625
416
mW
mW
Tstg
 IC storage temperature  
-40
+125
Tamb
 ambient temperature  
-25
+75



Description

The UBA1707 is a BiCMOS integrated circuit intended for use in mains-powered telecom terminals. It performs all speech and line interface functions, DC mask for voltage or current regulation and electronic hook switch control. The device includes an auxiliary amplifier, a loudspeaker channel and general purpose switches.

Most of the characteristics are programmable via a 3-wire serial bus interface.




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