TWL1102 Datasheet, PDF (1/29 Pages) Texas Instruments – VOICE-BAND AUDIO PROCESSOR VBAPE

TWL1102
VOICE-BAND AUDIO PROCESSOR (VBAP™)
D 2.7-V Operation
D Two Differential Microphone Inputs, One
Differential Earphone Output, and One
Single-Ended Earphone Output
D Programmable Gain Amplifiers for
Transmit, Receive, Sidetone, and Volume
Control
D Earphone Mute and Microphone Mute
D On-chip I²C-Bus, Which Provides a Simple,
Standard, Two-Wire Serial Interface With
Digital ICs
SLVS264 – NOVEMBER 1999
D Programmable for 15-Bit Linear Data or
8-Bit Companded (µ-Law or A-Law) Data
D Available in a 32-Terminal TQFP Package
D Designed for Analog and Digital Wireless
Handsets and Telecommunications
Applications
D Dual-Tone Multi-Frequency (DTMF) and
Single Tone Generator
D Pulse Density Modulated (PDM) Buzzer
Output
description
The voice-band audio processor (VBAP) is designed to perform the transmit encoding analog/digital (A/D)
conversion and receive decoding digital/analog (D/A) conversion, together with transmit and receive filtering
for voice-band communications systems. The device operates in either the 15-bit linear or 8-bit companded
(µ-law or A-Law) mode, which is selectable through the I²C interface. From a 2.048-MHz master clock input,
the VBAP generates its own internal clocks.
PBS PACKAGE
(TOP VIEW)
PLLV_DD
EARV_SS
EAR1ON
EARV_DD
EAR1OP
EARV_SS
EAR2O
AV_DD
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32
9
1234567 8
PCMO
PCMI
DV_SS
DV_DD
SCL
SDA
NC
NC
NC – No internal connection
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.
VBAP is a trademark of Texas Instruments Incorporated.
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.
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Copyright © 1999, Texas Instruments Incorporated
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