Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

AD28MSP02 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD28MSP02
Description  Voiceband Signal Port
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD28MSP02 Datasheet(HTML) 1 Page - Analog Devices

  AD28MSP02 Datasheet HTML 1Page - Analog Devices AD28MSP02 Datasheet HTML 2Page - Analog Devices AD28MSP02 Datasheet HTML 3Page - Analog Devices AD28MSP02 Datasheet HTML 4Page - Analog Devices AD28MSP02 Datasheet HTML 5Page - Analog Devices AD28MSP02 Datasheet HTML 6Page - Analog Devices AD28MSP02 Datasheet HTML 7Page - Analog Devices AD28MSP02 Datasheet HTML 8Page - Analog Devices AD28MSP02 Datasheet HTML 9Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 20 page
background image
FUNCTIONAL BLOCK DIAGRAM
VOICEBAND
ANALOG
INPUT A
VOICEBAND
ANALOG
INPUT B
DIFFERENTIAL
ANALOG
OUTPUT
DIGITAL
DATA AND
CONTROL
SERIAL
PORT
16-BIT
SIGMA-
DELTA DAC
16-BIT
SIGMA-
DELTA ADC
MUX
+20dB
AMP
VOLTAGE
REFERENCE
PGA
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Voiceband Signal Port
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
AD28msp02
FEATURES
Complete Analog I/O Port for Voiceband DSP
Applications
Linear-Coded 16-Bit Sigma-Delta ADC
Linear-Coded 16-Bit Sigma-Delta DAC
On-Chip Anti-Aliasing and Anti-lmaging Filters
On-Chip Voltage Reference
8 kHz Sampling Frequency
Twos Complement Coding
65 dB SNR + THD
Programmable Gain on DAC and ADC
Serial Interface To DSP Processors
24-Pin DlP/28-Lead SOIC
Single 5 V Power Supply
GENERAL DESCRIPTION
The AD28msp02 Voiceband Signal Port is a complete analog
front end for high performance voiceband DSP applications.
Compared to traditional
µ-law and A-law codecs, the
AD28msp02’s linear-coded ADC and DAC maintain wide
dynamic range while maintaining superior SNR and THD. A
sampling rate of 8.0 kHz coupled with 65 dB SNR + THD per-
formance make the AD28msp02 attractive in many telecom and
speech processing applications, for example digital cellular radio
and high quality telephones. The AD28msp02 simplifies overall
system design by requiring only a single +5 V power supply.
The inclusion of on-chip anti-aliasing and anti-imaging filters,
16-bit sigma-delta ADC and DAC, and programmable gain
amplifiers ensures a highly integrated and compact solution to
voiceband analog processing requirements. Sigma-delta conver-
sion technology eliminates the need for complex off-chip anti-
aliasing filters and sample-and-hold circuitry.
The AD28msp02’s serial I/O port provides an easy interface to
host DSP microprocessors such as the ADSP-2101, ADSP-2105
and ADSP-2111. The AD28msp02 is available in a 24-pin, 0.3"
plastic DIP and a 28-lead SOIC package.
FUNCTIONAL DESCRIPTION
Figure 1 shows a block diagram of the AD28msp02.
A/D CONVERSION
The A/D conversion circuitry of the AD28msp02 consists of two
analog input amplifiers, an optional 20 dB preamplifier, and
a sigma-delta analog-to-digital converter (ADC). The analog
input signal to the AD28msp02 must be ac-coupled.
Analog Input Amplifiers
The two analog input amplifiers (NORM, AUX) are internally
biased by an on-chip voltage reference in order to allow opera-
tion of the AD28msp02 with a single +5 V power supply.
An analog multiplexer selects either the NORM or AUX ampli-
fier as the input to the ADC’s sigma-delta modulator. The
optional 20 dB preamplifier may be used to increase the signal
level; the preamplifier can be inserted before the modulator or
can be bypassed. Input signal level to the sigma-delta modulator
should not exceed VINMAX, which is specified under “Analog
Interface Electrical Characteristics.” Refer to “Analog Input” in
the “Design Considerations” section of this data sheet for more
information.
The input multiplexer and 20 dB preamplifier are configured by
Bits 0 and 1 (IPS, IMS) of the AD28msp02’s control register. If
the multiplexer setting is changed while an input signal is being
processed, the ADC’s output must be allowed time to settle to
ensure that the output data is valid.
ADC
The ADC consists of a 2nd-order analog sigma-delta modulator,
an anti-aliasing decimation filter, and a digital high-pass filter.
The sigma-delta modulator noise-shapes the signal and pro-
duces 1-bit samples at a 1.0 MHz rate. This bit stream, which
represents the analog input signal, is fed to the anti-aliasing
decimation filter.
Decimation Filter
The anti-aliasing decimation filter contains two stages. The first
stage is a sinc
4 digital filter that increases resolution to 16 bits
and reduces the sample rate to 40 kHz. The second stage is an
IIR low-pass filter.


Similar Part No. - AD28MSP02

ManufacturerPart No.DatasheetDescription
Analog Devices
Analog Devices
AD28MSP01 AD-AD28MSP01 Datasheet
368Kb / 28P
   PSTN Signal Port
REV. A
AD28msp01KN AD-AD28msp01KN Datasheet
368Kb / 28P
   PSTN Signal Port
REV. A
AD28msp01KP AD-AD28msp01KP Datasheet
368Kb / 28P
   PSTN Signal Port
REV. A
AD28msp01KR AD-AD28msp01KR Datasheet
368Kb / 28P
   PSTN Signal Port
REV. A
AD28msp01KST AD-AD28msp01KST Datasheet
368Kb / 28P
   PSTN Signal Port
REV. A
More results

Similar Description - AD28MSP02

ManufacturerPart No.DatasheetDescription
Winbond
Winbond
W681512 WINBOND-W681512 Datasheet
316Kb / 38P
   SINGLE-CHANNEL VOICEBAND CODEC
W6811 WINBOND-W6811 Datasheet
457Kb / 37P
   SINGLE-CHANNEL VOICEBAND CODEC
W6811 WINBOND-W6811_05 Datasheet
598Kb / 37P
   SINGLE-CHANNEL VOICEBAND CODEC
W6810 WINBOND-W6810 Datasheet
405Kb / 36P
   SINGLE-CHANNEL VOICEBAND CODEC
List of Unclassifed Manufacturers
List of Unclassifed Man...
W681511SG ETC2-W681511SG Datasheet
283Kb / 32P
   SINGLE-CHANNEL VOICEBAND CODEC
Nuvoton Technology Corporation
Nuvoton Technology Corp...
W681511 NUVOTON-W681511 Datasheet
931Kb / 32P
   SINGLE-CHANNEL VOICEBAND CODEC
W681512 NUVOTON-W681512 Datasheet
942Kb / 34P
   SINGLE-CHANNEL VOICEBAND CODEC
Winbond
Winbond
W681511 WINBOND-W681511 Datasheet
406Kb / 34P
   SINGLE-CHANNEL VOICEBAND CODEC
W681511 WINBOND-W681511_05 Datasheet
520Kb / 33P
   SINGLE-CHANNEL VOICEBAND CODEC
Rhombus Industries Inc.
Rhombus Industries Inc.
T-31107 RHOMBUS-IND-T-31107 Datasheet
33Kb / 1P
   Modem Coupling and Voiceband Transformers
More results


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz