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TWL1101 Datasheet

  • TWL1101

  • VOICE-BAND AUDIO PROCESSOR

  • 31頁

  • TI

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TWL1101
VOICE-BAND AUDIO PROCESSOR (VBAP鈩?
SLWS074A 鈥?MAY 1998 REVISED MARCH 1999
D
D
D
D
D
3-V Operation
Two Differential Microphone Inputs, One
Differential Earphone Output, and One
Single-Ended Earphone Output
Programmable Gain Amplifiers for
Transmit, Receive, Sidetone, and Volume
Control
Earphone Mute and Microphone Mute
On-chip I
2
C-Bus, Which Provides a Simple,
Standard, Two-Wire Serial Interface with
Digital ICs
D
D
D
D
Programmable for 13-Bit Linear Data or
8-Bit Companded (碌-Law) Data
Available in a 48-Pin TQFP Package, a
64-Pin
碌*BGA
Package, and a
Designed for Analog and Digital Wireless
Handsets and Telecommunications
Applications
TX Channel AGC Function Available
Through PCM Interface or I
2
C Bus
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 13-bit linear or 8-bit companded
碌-law
mode, which is selectable through the
I
2
C interface.
From a 2.048-MHz master clock input, the VBAP generates its own internal clocks.
The TWL1101 device is characterized for operation from 鈥?0擄C to 85擄C.
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.
Copyright
漏
1999, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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