ML145502
ML145503
ML145505
PCM Codec–Filter Mono–Circuit
Legacy Device:
Motorola MC145502, MC145503, MC145505
The ML145502, ML145503, and ML145505 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 ML145503 is a general purpose device that is
offered in a 16–pin package. These are designed to operate in both syn-
chronous and asynchronous applications and contain an on–chip preci-
sion reference voltage. The ML145505 is a synchronous device offered in
a 16–pin DIP and wide body SOIC package intended for instrument use.
The ML145502 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
These devices are pin–for–pin replacements for Motorola’s first genera-
tion 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 ML1455xx 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.
ML145502
• 22 Pin and 28 Pin Packages
• 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
• Selectable Peak Overload Voltages (2.5, 3.15, 3.78 V)
• Access to the Inverting Input of the TxI Input Operational Amplifier
• 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
ML145503—
Similar to the ML145502 Plus:
• 16–Pin Dip and SOIC 16 Packages
• Complete Access to the Three Terminal Transmit Input Operational
Amplifiers
ML145505
— Somewhat Similar To ML145503 Except:
• Common 64 kHz to 4.1 MHz Transmit/Receive Data Clock
16
1
P DIP 16 = EP
PLASTIC DIP
CASE 648
22
1
P DIP 22 = WP
PLASTIC DIP
CASE 708
16
1
SOG 16 = -5P
SOG PACKAGE
CASE 751G
PLCC 28 = -4P
PLCC PACKAGE
CASE 776
28 1
CROSS REFERENCE/ORDERING INFORMATION
LANSDALE
PACKAGE
MOTOROLA
P DIP 22
PLCC 28
P DIP 16
SO 16W
P DIP 16
SO 16W
MC145502P
MC145502FN
MC145503P
MC145503DW
MC145505P
MC145505DW
ML145502WP
ML145502-4P
ML145503EP
ML145503-5P
ML145505EP
ML145505-5P
Note:
Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from
ML
to
MLE.
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