MC14LC5540 Datasheet, PDF (1/18 Pages) Motorola, Inc – ADPCM Codec

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Technical Summary
ADPCM Codec
This technical summary provides a brief description of the MC14LC5540
ADPCM Codec. A complete data book for the MC14LC5540 is available and
can be ordered from your local Motorola sales office. The data book number is
MC145540/D.
The MC14LC5540 ADPCM Codec is a single chip implementation of a PCM
Codec–Filter and an ADPCM encoder/decoder, and therefore provides an
efficient solution for applications requiring the digitization and compression of
voiceband signals. This device is designed to operate over a wide voltage
range, 2.7 to 5.25 V and, as such, is ideal for battery powered as well as ac
powered applications. The MC14LC5540 ADPCM Codec also includes a serial
control port and internal control and status registers that permit a microcom-
puter to exercise many built–in features.
The ADPCM Codec is designed to meet the 32 kbps ADPCM conformance
requirements of CCITT Recommendation G.721–1988 and ANSI T1.301. It
also meets ANSI T1.303 and CCITT Recommendation G.723–1988 for 24 kbps
ADPCM operation, and the 16 kbps ADPCM standard, CCITT Recommen-
dation G.726. This device also meets the PCM conformance specification of the
CCITT G.714 Recommendation.
• Single 2.7 to 5.25 V Power Supply
• Typical 2.7 V Power Dissipation of 43 mW, Power–Down of 15 µW
• Differential Analog Circuit Design for Lowest Noise
• Complete Mu–Law and A–Law Companding PCM Codec–Filter
• ADPCM Transcoder for 64, 32, 24, and 16 kbps Data Rates
• Universal Programmable Dual Tone Generator
• Programmable Transmit Gain, Receive Gain, and Sidetone Gain
• Low Noise, High Gain, Three Terminal Input Operational Amplifier for
Microphone Interface
• Push–Pull, 300 Ω Power Drivers with External Gain Adjust for Receiver
Interface
• Push–Pull, 300 Ω Auxiliary Output Drivers for Ringer Interface
• Voltage Regulated Charge Pump to Power the Analog Circuitry in Low
Voltage Applications
• Receive Noise Burst Detect Algorithm
• Order Complete Document as MC145540/D
• Device Supported by MC145537EVK ADPCM Codec Evaluation Kit
Order this document
by MC14LC5540TS/D
MC14LC5540
28
1
P SUFFIX
PLASTIC DIP
CASE 710
28
1
DW SUFFIX
SOG PACKAGE
CASE 751F
32 1
FU SUFFIX
TQFP
CASE 873A
ORDERING INFORMATION
MC14LC5540P Plastic DIP
MC14LC5540DW SOG Package
MC14LC5540FU TQFP
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
REV 2
6/97 TN97060200
©_MOMo_Tto_Oro_Rla,_OIn_Lc._A1997
MC14LC5540
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