MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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by MC145500/D
PCM Codec-Filter Mono-Circuit
The MC145500, MC145501, MC145502, MC145503, and MC145505 are all
per channel PCM Codec–Filter mono–circuits. These devices perform the voice
digitization and reconstruction as well as the band limiting and smoothing
required for PCM systems. The MC145500 and MC145503 are general
purpose devices that are offered in a 16–pin package. They are designed to
operate in both synchronous and asynchronous applications and contain an
on–chip precision reference voltage. The MC145501 is offered in an 18–pin
package and adds the capability of selecting from three peak overload voltages
(2.5, 3.15, and 3.78 V). The MC145505 is a synchronous device offered in a
16–pin DIP and wide body SOIC package intended for instrument use. The
MC145502 is the full–featured device which presents all of the options of the
chip. This device is packaged in a 22–pin DIP and a 28–pin chip carrier package
and contains all the features of the MC145500 and MC145501 plus several
more. Most of these features can be made available in a lower pin count
package tailored to a specific user’s application. Contact the factory for further
details.
These devices are pin–for–pin replacements for Motorola’s first generation of
MC14400/01/02/03/05 PCM mono–circuits and are upwardly compatible with
the MC14404/06/07 codecs and other industry standard codecs. They also
maintain compatibility with Motorola’s family of MC33120 and MC3419 SLIC
products.
The MC145500 family of PCM Codec–Filter mono–circuits utilizes CMOS
due to its reliable low–power performance and proven capability for complex
analog/digital VLSI functions.
MC145500
(This Device is Not Recommended for New Designs)
•
16–Pin Package
•
Transmit Bandpass and Receive Low–Pass Filter On–Chip
•
Pin Selectable Mu–Law/A–Law Companding with Corresponding Data
Format
•
On–Chip Precision Reference Voltage (3.15 V)
•
Power Dissipation of 50 mW, Power–Down of 0.1 mW at
±
5 V
•
Automatic Prescaler Accepts 128 kHz, 1.536, 1.544, 2.048, and 2.56 MHz
for Internal Sequencing
MC145501
— All of the Above Plus:
(This Device is Not Recommended for New Designs)
•
18–Pin Package
•
Selectable Peak Overload Voltages (2.5, 3.15, 3.78 V)
•
Access to the Inverting Input of the TxI Input Operational Amplifier
MC145502
— All of the Above Plus:
•
22–Pin and 28–Pin Packages
•
Variable Data Clock Rates (64 kHz to 4.1 MHz)
•
Complete Access to the Three Terminal Transmit Input Operational
Amplifiers
•
An External Precision Reference May Be Used
MC145503
— All of the Above Features of the MC145500 Plus:
•
16–Pin Package
•
Complete Access to the Three Terminal Transmit Input Operational Amplifiers
MC145505
— Same as MC145503 Except:
•
16–Pin Package
•
Common 64 kHz to 4.1 MHz Transmit/Receive Data Clock
MC145500
MC145501
MC145502
MC145503
MC145505
L SUFFIX
CERAMIC PACKAGE
CASE 620
MC145500/03/05
P SUFFIX
PLASTIC DIP
CASE 648
MC145503/05
L SUFFIX
CERAMIC PACKAGE
CASE 726
MC145501
16
1
16
1
18
1
22
1
L SUFFIX
CERAMIC PACKAGE
CASE 736
MC145502
22
1
P SUFFIX
PLASTIC DIP
CASE 708
MC145502
DW SUFFIX
SOG PACKAGE
CASE 751G
MC145503/05
FN SUFFIX
PLCC PACKAGE
CASE 776
MC145502
16
1
28 1
REV 1
9/95 (Replaces ADI1287)
©
Motorola, Inc. 1995
MOTOROLA
MC145500•MC145501•MC145502•MC145503•MC145505
1
MOTOROLA [ MOTOROLA, INC ]
