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Details, datasheet, quote on part number:XC145481DW
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Datasheet text preview:
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by XC145481/D
XC145481
Product Preview 3 V PCM Codec-Filter
The XC145481 is a general purpose per channel PCM CodecFilter with pin selectable MuLaw or ALaw companding, and is offered in 20pin DIP, SOG, a n d SSOP packages. This device performs the voice digitization and reconstruction as well as the band limiting and smoothing required for PCM s y s t e m s . This device is designed to operate in both synchronous and a s y n c h r o n o u s applications and contains an onchip precision reference voltage. This device has an input operational amplifier whose output is the input to the encoder section. The encoder section immediately lowpass filters the analog signal with an active RC filter to eliminate very high frequency noise from being modulated down to the passband by the switched capacitor filter. From the active RC filter, the analog signal is converted to a differential signal. From this point, all analog signal processing is done differentially. This allows processing of an analog signal that is twice the amplitude allowed by a singleended design, which reduces the significance of noise to both the inverted and noninverted signal paths. Another advantage of this differential design is that n o i s e injected via the power supplies is a commonmode signal that is cancelled when the inverted and noninverted signals are recombined. This dramatically improves the power supply rejection ratio. A f t e r the differential converter, a differential switched capacitor filter bandpasses the analog signal from 200 Hz to 3400 Hz before the signal is digitized by the differential compressing A/D converter. The decoder accepts PCM data and expands it using a differential D/A converter. The output of the D/A is lowpass filtered at 3400 Hz and sinX/X compensated by a differential switched capacitor filter. The signal is then filtered by an active RC filter to eliminate the out of band energy of the switched capacitor filter. T h e XC145481 PCM CodecFilter accepts a variety of clock formats, i n c l u d i n g Short Frame Sync, Long Frame Sync, IDL, and GCI timing environments. T h e XC145481 PCM CodecFilter utilizes CMOS due to its reliable lowpower performance and proven capability for complex analog/digital VLSI functions. · · · · · · · · Single 3 V Power Supply Typical Power Dissipation of 12 mW, PowerDown of 0.01 mW Fully Differential Analog Circuit Design for Lowest Noise Transmit BandPass and Receive LowPass Filters OnChip Active RC PreFiltering and PostFiltering MuLaw and ALaw Companding by Pin Selection OnChip Precision Reference Voltage (0.886 V) for a 5 dBm TLP @ 600 PushPull 300 Power Drivers with External Gain Adjust
20 1
P SUFFIX PLASTIC DIP CASE 738
20 1
DW SUFFIX SOG PACKAGE CASE 751D
20
SD SUFFIX SSOP CASE 940C
1
ORDERING INFORMATION
XC145481P XC145481DW XC145481SD Plastic DIP SOG Package SSOP
PIN ASSIGNMENT
VAGREF RO PI PO PO+ VDD FSR DR BCLKR PDI 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VAG TI+ TI TG Mu/A VSS FST DT BCLKT MCLK
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. REV 0 10/95
© OTOROLA M Motorola, Inc. 1995
XC145481 1
PACKAGE DIMENSIONS
P SUFFIX PLASTIC DIP CASE 73803
-A20 11 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. DIM A B C D E F G J K L M N INCHES MIN MAX 1.010 1.070 0.240 0.260 0.150 0.180 0.015 0.022 0.050 BSC 0.050 0.070 0.100 BSC 0.008 0.015 0.110 0.140 0.300 BSC 15° 0° 0.020 0.040 MILLIMETERS MIN MAX 25.66 27.17 6.10 6.60 3.81 4.57 0.39 0.55 1.27 BSC 1.27 1.77 2.54 BSC 0.21 0.38 2.80 3.55 7.62 BSC 0° 15° 1.01 0.51
B
1 10
C
L
-TSEATING PLANE
K M E G F D 20 PL 0.25 (0.010)
M
N J 20 PL 0.25 (0.010) TA
M
M
TB
M
DW SUFFIX SOG PACKAGE CASE 751D04 A
20 11 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.150 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D F G J K M P R MILLIMETERS MIN MAX 12.65 12.95 7.40 7.60 2.35 2.65 0.35 0.49 0.50 0.90 1.27 BSC 0.25 0.32 0.10 0.25 0_ 7_ 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.499 0.510 0.292 0.299 0.093 0.104 0.014 0.019 0.020 0.035 0.050 BSC 0.010 0.012 0.004 0.009 0_ 7_ 0.395 0.415 0.010 0.029
B
1 10
10X
P 0.010 (0.25)
M
B
M
20X
D
M
0.010 (0.25)
TA
S
B
J
S
F R C T
18X SEATING PLANE X 45 _
G
K
M
XC145481 2
MOTOROLA
SD SUFFIX SSOP CASE 940C03
20X
K REF 0.12 (0.005)
M
TU
S
V
S
0.25 (0.010) N L/2 L
PIN 1 IDENT 1 10 20 11
M B N F DETAIL E A V 0.20 (0.008)
M
U K
S
TU
J
J1
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION/INTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF K DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR INTRUSION SHALL NOT REDUCE DIMENSION K BY MORE THAN 0.07 (0.002) AT LEAST MATERIAL CONDITION. 6. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE W. DIM A B C D F G H J J1 K K1 L M MILLIMETERS MIN MAX 7.07 7.33 5.20 5.38 1.73 1.99 0.05 0.21 0.63 0.95 0.65 BSC 0.59 0.75 0.09 0.20 0.09 0.16 0.25 0.38 0.25 0.33 7.65 7.90 0_ 8_ INCHES MIN MAX 0.278 0.288 0.205 0.212 0.068 0.078 0.002 0.008 0.024 0.037 0.026 BSC 0.023 0.030 0.003 0.008 0.003 0.006 0.010 0.015 0.010 0.013 0.301 0.311 0_ 8_
0.076 (0.003) T
SEATING PLANE
C D G H
DETAIL E
MOTOROLA
ÉÉÉÉ ÇÇÇÇ ÉÉÉÉ ÇÇÇÇ
K1 SECTION NN
W
XC145481 3
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