MC145483DW Freescale, MC145483DW Datasheet

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MC145483DW

Manufacturer Part Number
MC145483DW
Description
Manufacturer
Freescale
Type
PCMr
Datasheet

Specifications of MC145483DW

Number Of Channels
1
Gain Control
Adjustable
Number Of Adc's
1
Number Of Dac's
1
Adc/dac Resolution
13b
Package Type
SOIC W
Sample Rate
8KSPS
Number Of Adc Inputs
1
Number Of Dac Outputs
1
Operating Supply Voltage (min)
2.7V
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Pin Count
20
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC145483DW
Manufacturer:
INTEL
Quantity:
700
Part Number:
MC145483DW
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
3 V 13-Bit Linear PCM
Codec-Filter
format, and is offered in 20–pin SOG, SSOP, and TSSOP packages, and a
32–pin QFN package. This device performs the voice digitization and
reconstruction as well as the band limiting and smoothing required for the voice
coding in digital communication systems. This device is designed to operate in
both synchronous and asynchronous applications and contains an on–chip
precision reference voltage.
encoder section. The encoder section immediately low–pass filters the analog
signal with an active R–C filter to eliminate very high frequency noise from being
modulated down to the passband by the switched capacitor filter. From the
active R–C 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 single–ended
design, which reduces the significance of noise to both the inverted and
non–inverted signal paths. Another advantage of this differential design is that
noise injected via the power supplies is a common–mode signal that is
cancelled when the inverted and non–inverted signals are recombined. This
dramatically improves the power supply rejection ratio.
passes the analog signal from 200 Hz to 3400 Hz before the signal is digitized
by the differential 13–bit linear A/D converter. The digital output is 2s
complement format.
using a differential 13–bit linear D/A converter. The output of the D/A is
low–pass filtered at 3400 Hz and sinX/X compensated by a differential switched
capacitor filter. The signal is then filtered by an active R–C filter to eliminate the
out–of–band energy of the switched capacitor filter.
which allows for decoupling of the internal circuitry that generates the
mid–supply V AG reference voltage to the V SS power supply ground. This
reduces clock noise on the analog circuitry when external analog signals are
referenced to the power supply ground.
Sync and Long Frame Sync clock formats, and utilizes CMOS due to its reliable
low–power performance and proven capability for complex analog/digital VLSI
functions.
• Single 3 V Power Supply
• 13–Bit Linear ADC/DAC Conversions with 2s Complement Data Format
• Typical Power Dissipation of 8 mW, Power–Down of 0.01 mW
• Fully–Differential Analog Circuit Design for Lowest Noise
• Transmit Band–Pass and Receive Low–Pass Filters On–Chip
• Transmit High–Pass Filter May be Bypassed by Pin Selection
• Active R–C Pre–Filtering and Post–Filtering
• On–Chip Precision Reference Voltage of 0.886 V for a – 5 dBm TLP
• 3–Terminal Input Op Amp Can be Used, or a 2–Channel Input Multiplexer
• Receive Gain Control from 0 dB to – 21 dB in 3 dB Steps in Synchronous
• Push–Pull 300–Ω Power Drivers with External Gain Adjust
REV 3
4/2003
The MC145483 is a 13–bit linear PCM Codec–Filter with 2s complement data
This device has an input operational amplifier whose output is the input to the
After the differential converter, a differential switched capacitor filter band–
The decoder digital input accepts 2s complement data and reconstructs it
The MC145483 PCM Codec–Filter has a high–impedance V AG reference pin
The MC145483 13–bit linear PCM Codec–Filter accepts both Short Frame
@ 600 Ω
Operation
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
20
20
20
MC145483DW
MC145483SD
MC145483DT
MC145483FC
ORDERING INFORMATION
MC145483
1
1
1
1
32
Order this document
SSOP
TSSOP
QFN
SOG Package
SOG PACKAGE
DW SUFFIX
CASE 751D
CASE 940C
CASE 948E
SD SUFFIX
DT SUFFIX
FC SUFFIX
CASE 1311
by MC145483/D
TSSOP
SSOP
MC145483
QFN

Related parts for MC145483DW

MC145483DW Summary of contents

Page 1

... For More Information On This Product, Go to: www.freescale.com Order this document by MC145483/D MC145483 DW SUFFIX SOG PACKAGE 20 CASE 751D 1 SD SUFFIX SSOP 20 CASE 940C 1 DT SUFFIX TSSOP 20 CASE 948E SUFFIX QFN CASE 1311 ORDERING INFORMATION MC145483DW SOG Package MC145483SD SSOP MC145483DT TSSOP MC145483FC QFN MC145483 ...

Page 2

... Freescale Semiconductor, Inc. 20-PIN SOG, SSOP, and TSSOP V Ref RO– PO– PO FSR BCLKR PDI For More Information On This Product, 2 PIN ASSIGNMENTS V AG TI+ TI– FST PO– BCLKT PO+ 5 MCLK FSR to: www.freescale.com 32-PIN QFN TI– FST 17 NC ...

Page 3

... The low–pass filter used to at- tenuate these aliasing components is typically called a re- construction or smoothing filter. The MC145483 PCM Codec–Filter has the codec, both presampling and reconstruction filters, and a precision volt- age reference on–chip. Go to: www.freescale.com RECEIVE SHIFT DR REGISTER FSR ...

Page 4

... This output is capable of driving a 2 kΩ load to 0.886 V peak referenced to the V AG pin. If the device is operated half–channel with the FST pin clocking and FSR pin held low, the receive filter input will be Go to: www.freescale.com ...

Page 5

... DR Data, Receive (Pin 8) This pin is the PCM data input. See the pin descriptions for FSR, BCLKR, and BCKLT for more information. Go to: www.freescale.com MC145483 ...

Page 6

... MCLK input, which achieves the re- quired 256 kHz internal sequencing clock. The clocking re- quirements of the MCLK input are independent of the PCM data transfer mode (i.e., Long Frame Sync, Short Frame Sync, whether the device is used in the synchronous modes or not). Go to: www.freescale.com Attenuation – 3 – 6 – 9 – ...

Page 7

... Table 3. PCM Codes for 1 kHz Digital Milliwatt Level π/8 3π/8 5π/8 7π/8 9π/8 11π/8 13π/8 15π/8 Go to: www.freescale.com Sign Bit Magnitude Bits 0 1111 1111 1111 0 0000 0000 0001 0 0000 0000 0000 1 1111 1111 1111 ...

Page 8

... Transmit and receive both use BCLKT. FST may occur at a different time than FSR. Bits 14, 15, and 16, clocked into DR, are used for attenuation control for the receive analog output. Figure 2. Digital Timing Modes for the PCM Data Interface For More Information On This Product, Go to: www.freescale.com ...

Page 9

... It is recom- mended that the layout be as symmetrical as possible to avoid any imbalances which would reduce the noise cancelling benefits of this differential op amp circuit. Refer to the application schematics for examples of this circuitry. Go to: www.freescale.com MC145483 ...

Page 10

... V SS pin. Handset receivers and tele- phone line interface circuits using transformers may be audio signal referenced completely to the V AG pin. Re- For More Information On This Product, fer to the application schematics for examples of this circuitry. The V AG pin cannot be used for ESD or line protection. Go to: www.freescale.com ...

Page 11

... Load, PI ≥ – 0.5 V) — (No Load, PI ≤ – 1.0 V) — PDI = V SS — FST and FSR = PDI = V DD — Symbol out Go to: www.freescale.com Symbol Value V DD – 0 – – – stg – +150 Typ Max 3.0 5.25 2.0 2.8 2.2 3 ...

Page 12

... Power Drivers PI, PO+, PO– PI — — — ± 10 — — 0 – 0.2 300 Ω 45 100 nF in series with ≥ 20 Ω — — kHz kHz — Go to: www.freescale.com Typ Max Unit ± 0.1 ± 1.0 µA — — MΩ — ± 5 — – 1 — dB 2000 — ...

Page 13

... Hz — — 1000 to 1600 Hz — — 1600 to 2600 Hz — — 2600 to 2800 Hz — — 2800 to 3000 Hz — — — – to: www.freescale.com D/A Units Max Min Typ Max + 0.25 – 0.25 — + 0.25 dB ± 0.05 ± 0.02 ± 0.05 — dB ± ...

Page 14

... LONG FRAME SPECIFIC TIMING 50 — — SHORT FRAME SPECIFIC TIMING to: www.freescale.com Typ Max Unit 256 — kHz 512 — 1536 — 1544 — 2048 — 2560 — 4096 — — — — ns — — ns — ...

Page 15

... Freescale Semiconductor, Inc MCLK 1 BCLKT 11 FST BCLKR (BCLKT FSR 1 DR For More Information On This Product Figure 3. Long Frame Sync Timing Go to: www.freescale.com MC145483 ...

Page 16

... Freescale Semiconductor, Inc MCLK 12 1 BCLKT FST BCLKR FSR For More Information On This Product Figure 4. Short Frame Sync Timing Go to: www.freescale.com ...

Page 17

... PO FSR FST BCLKR BCLKT 10 11 PDI MCLK Go to: www.freescale.com 0.01 µF 1.0 µF ANALOG IN 10 kΩ kΩ 1.0 µF 8 kHz PCM OUT 2.048 MHz PCM IN 0.01 µF 10 kΩ 1.0 µF 10 kΩ 10 kΩ ANALOG IN Y 1.0 µF 8 kHz PCM OUT 2 ...

Page 18

... RO– TI TI– 4 PO– PO FSR FST BCLKR BCLKT 10 PDI MCLK Go to: www.freescale.com + kΩ 68 µF 1 kΩ 0.1 µF 1 kΩ MIC 1 kΩ 0.1 µF 8 kHz PCM OUT 2.048 MHz PCM 0.1 µF 20 kΩ kHz 13 PCM OUT 12 2.048 MHz ...

Page 19

... –T– G 18X –R– –P– 0.120 (0.005 For More Information On This Product, Go to: www.freescale.com PACKAGE DIMENSIONS DW SUFFIX SOG PACKAGE CASE 751D–04 0.010 (0.25 SEATING PLANE M SD SUFFIX SSOP CASE 940C–02 C 0.076 (0.003) N 0.25 (0.010 ...

Page 20

... L PIN 1 IDENT 1 0.15 (0.006 –V– 0.100 (0.004) –T– SEATING PLANE For More Information On This Product, Go to: www.freescale.com DT SUFFIX TSSOP CASE 948E–02 NOTES Í Í Í Í Í Í –U– Í Í Í SECTION N–N 10 0.25 (0.010) ...

Page 21

... C M (45 ) ° (1.73) 0.60 0.24 DETAIL N CORNER CONFIGURATION OPTION 4 1.6 BACKSIDE 1.5 PIN 1 INDEX 0.475 0.425 0.25 R 0.15 DETAIL M BACKSIDE PIN 1 INDEX OPTION Go to: www.freescale.com 0 (0.25) (0.5) C SEATING PLANE DETAIL G ° 0.60 0.24 ( 0.39 0.31 0.1 2X 0.0 DETAIL T PREFERRED PIN 1 BACKSIDE INDEX ...

Page 22

... Freescale Semiconductor, Inc. This page intentionally left blank. For More Information On This Product, Go to: www.freescale.com ...

Page 23

... Freescale Semiconductor, Inc. This page intentionally left blank. For More Information On This Product, Go to: www.freescale.com MC145483 ...

Page 24

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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