TWL1107 Datasheet, PDF (1/19 Pages) Texas Instruments – VOICE-BAND AUDIO PROCESSOR (VBAP)

TWL1107
VOICE-BAND AUDIO PROCESSOR (VBAP)
D Designed for Analog and Digital Wireless
Handsets, Voice-Enabled Terminals, and
Telecommunications Applications
D 2.7-V to 3.3-V Operation
D Selectable 13-Bit Linear or 8-Bit A-Law
Companded Conversion
D Differential Microphone Input with External
Gain Setting
D Differential Earphone Output Capable of
Driving a 32-Ω to 8-Ω Load
D Programmable Volume Control in Linear
Mode
D Microphone (MIC) and Earphone (EAR)
Mute Functions
D Typical Power Dissipation of 0.03 mW in
Power-Down Mode
D 2.048-MHz Master Clock Rate
D 300-Hz to 3.4-kHz Passband
D Low Profile 20-Terminal TSSOP Packaging
MICMUTE
RESET
VSS
EARVSS
EAROUT+
EARVDD
EAROUT–
EARVSS
MICGAIN+
MICIN–
PW PACKAGE
(TOP VIEW)
SLWS119 – JUNE 2001
1
20
EARMUTE
2
19
MCLK
3
18
PCMSYNC
4
17
PCMO
5
16
PCMI
6
15
DVSS
7
14
DVDD
8
13
LINSEL
9
12
MICGAIN –
10
11
MICIN+
description
The TWL1107 voice-band audio processor (VBAP) is designed to perform the transmit encoding
analog-to-digital (A/D) conversion, the receive decoding digital-to-analog (D/A) conversion, and the transmit
and receive filtering for voice-band communications systems. The TWL1107 device operates in either the 13-bit
linear or 8-bit companded (A-law) mode. The VBAP generates its own internal clocks from a 2.048-MHz master
clock input.
This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These
circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,
Method 3015; however, it is advised that precautions be taken to avoid application of any voltage higher than maximum-rated
voltages to these high-impedance circuits. During storage or handling, the device leads should be shorted together or the device
should be placed in conductive foam. In a circuit, unused inputs should always be connected to an appropriated logic voltage level,
preferably either VCC or ground. Specific guidelines for handling devices of this type are contained in the publication Guidelines for
Handling Electrostatic-Discharge-Sensitive (ESDS) Devices and Assemblies available from Texas Instruments.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
VBAP is a trademark of Texas Instruments.
All other trademarks are the products of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2001, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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