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參數資料
| 型號： | 935263881112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網絡 |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PDSO28 |
| 封裝： | PLASTIC, SOT-341, SSOP-28 |
| 文件頁數： | 12/38頁 |
| 文件大?。?/td> | 287K |
| 代理商： | 935263881112 |
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1999 Feb 17
2
Philips Semiconductors
Product specication
Cordless telephone, answering machine
line interface
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:
– Symmetrical inputs
– Fixed gain
– Large signals handling capability.
Receive amplifier with fixed gain
Transmit and receive amplifiers AGC for line loss
compensation.
Auxiliary amplier
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.
APPLICATIONS
Cordless base stations
Answering machines
Mains or battery-powered telephone sets.
GENERAL 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.
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UBA1707T
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
UBA1707TS
SSOP28
plastic shrink small outline package; 28 leads; body width 5.3 mm
SOT341-1
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