TLC32044CFNR [TI]

Single Channel Codec, 0.15 - 3.6 kHz Bandwidth 28-PLCC;


型号：	TLC32044CFNR
厂家：	TEXAS INSTRUMENTS
描述：	Single Channel Codec, 0.15 - 3.6 kHz Bandwidth 28-PLCC PC 电信电信集成电路
文件：	总3页 (文件大小：124K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Product Folder: TLC32044, Single Channel Codec, 0.15 - 3.6 kHz Bandwidth

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FEATURES | DESCRIPTION | DATASHEETS | PRICING/AVAILABILITY/PKG |

APPLICATION NOTES | BLOCK DIAGRAMS

PRODUCT FOLDER | PRODUCT INFO:

PRODUCT SUPPORT: APPLICATIONS

TLC32044, Single Channel Codec, 0.15 - 3.6 kHz Bandwidth

DEVICE STATUS: ACTIVE

PARAMETER NAME

Resolution (Bits)

TLC32044

Sampling Rate (max) (kHz) 19.2

Bandwidth (kHz)

Number of Channels

Supply Voltage(s) (V)

Pd (typ) (mW)

0.15 - 3.6

-5

125

FEATURES

●

14-Bit Dynamic Range ADC and DAC

2's Complement Format

Variable ADC and DAC Sampling Rate Up to 19,200 Samples per Second

Switched-Capacitor Antialiasing Input Filter and Output-Reconstruction Filter

Serial Port for Direct Interface to TMS(SMJ)320C17, TMS(SMJ)32020, TMS(SMJ)320C25,and TMS320C30

Digital Signal Processors

●

Synchronous or Asynchronous ADC and DAC Conversion Rates With Programmable Incremental ADC and DAC

Conversion Timing Adjustments

Serial Port Interface to SN74(54)299 Serial-to-Parallel Shift Register for Parallel Interface to TMS(SMJ)32010,

TMS(SMJ)320C15, or Other Digital Processors

●

Internal Reference for Normal Operation and External Purposes, or Can Be Overridden by External Reference

CMOS Technology

DESCRIPTION

The TLC32044 and TLC32045 are complete analog-to-digital and digital-to-analog input and output systems on

single monolithic CMOS chips. The TLC32044 and TLC32045 integrate a bandpass switched-capacitor antialiasing

input filter, a 14-bit-resolution A/D converter, four microprocessor-compatible serial port modes, a 14-bit-resolution

D/A converter, and a low-pass switched-capacitor output-reconstruction filter. The devices offer numerous

combinations of master clock input frequencies and conversion/sampling rates, which can be changed via digital

processor control.

Typical applications for the TLC32044 and TLC32045 include speech encryption for digital transmission, speech

recognition/ storage systems, speech synthesis, modems (7.2-, 8-, 9.6-, 14.4-, and 19.2-kHz sampling rate),

analog interface for digital signal processors (DSPs), industrial process control, biomedical instrumentation,

acoustical signal processing, spectral analysis, data acquisition, and instrumentation recorders. Four serial modes,

which allow direct interface to the TMS(SMJ)320C17, TMS(SMJ)32020, TMS(SMJ)320C25, and TMS(SMJ)320C30

digital signal processors, are provided. Also, when the transmit and receive sections of the analog interface circuit

(AIC) are operating synchronously, it will interface to two SN74(54)299 serial-to-parallel shift registers. These

serial-to-parallel shift registers can then interface in parallel to the TMS(SMJ)32010, TMS(SMJ)320C15, and other

digital signal processors, or external FIFO circuitry. Output data pulses are emitted to inform the processor that

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Product Folder: TLC32044, Single Channel Codec, 0.15 - 3.6 kHz Bandwidth

data transmission is complete or to allow the DSP to differentiate between two transmitted bytes. A flexible control

scheme is provided so that the functions of the TLC32044 or TLC32045 can be selected and adjusted coincidentally

with signal processing via software control.

The antialiasing input filter comprises eighth-order and fourth-order CC-type (Chebyshev/elliptic transitional) low-

pass and high-pass filters, respectively. The input filter is implemented in switched-capacitor technology and is

preceded by a continuous time filter to eliminate any possibility of aliasing caused by sampled data filtering. When

only low-pass filtering is desired, the high-pass filter can be switched out of the signal path. A selectable, auxiliary,

differential analog input is provided for applications where more than one analog input is required.

The A/D and D/A architectures ensure no missing codes and monotonic operation. An internal voltage reference is

provided to ease the design task and to provide complete control over the performance of the TLC32044 or

TLC32045. The internal voltage reference is brought out to a terminal and is available to the designer. Separate

analog and digital voltage supplies and grounds are provided to minimize noise and ensure a wide dynamic range.

Also, the analog circuit path contains only differential circuitry to keep noise to an absolute minimum. The only

exception is the DAC sample and hold, which utilizes pseudo-differential circuitry.

The output-reconstruction filter is an eighth-order CC-type (Chebyshev/elliptic transitional low-pass filter) followed

by a second-order (sin x)/x correction filter and is implemented in switched-capacitor technology. This filter is

followed by a continuous-time filter to eliminate images of the digitally encoded signal. The on-board (sin x)/x

correction filter can be switched out of the signal path using digital signal processor control, if desired.

The TLC32044C and TLC32045C are characterized for operation from 0°C to 70°C. The TLC32044E is characterized

for operation from -20°C to 85°C. The TLC32044I and TLC32045I are characterized for operation from -40°C to 85°

C. The TLC32044M is characterized for operation from -55°C to 125°C.

TECHNICAL RESOURCES

To view the following documents, Acrobat Reader 4.0 is required.

To download a document to your hard drive, right-click on the link and choose 'Save'.

DATASHEET

Full datasheet in Acrobat PDF: tlc32044.pdf (534 KB,Rev.F) (Updated: 05/01/1995)

APPLICATION NOTES

●

Amplifiers and Bits: An Introduction to Selecting Amplifiers for Data Converters (Rev. B) (SLOA035B -

Updated: 12/18/2001)

Understanding Data Converters (SLAA013 - Updated: 07/01/1995)

BLOCK DIAGRAMS

Generic Web Access Device

PRICING/AVAILABILITY/PKG

BUDGETARY PRICE

US$/UNIT

ORDERABLE DEVICE PACKAGE PINS TEMP (ºC) STATUS

PACK QTY DSCC NUMBER PRICING/AVAILABILITY/PKG

QTY=1000+

Check stock or order

TLC32044CFN

TLC32044CFNR

TLC32044CN

TLC32044EFN

TLC32044IFK

TLC32044IFK-T

TLC32044IN

NRND

ACTIVE

NRND

9.42

9.45

9.42

23.24

30.43

9.42

750

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Product Folder: TLC32044, Single Channel Codec, 0.15 - 3.6 kHz Bandwidth

Check stock or order

TLC32044MFKB

TLC32044MJ

28 -55 TO 125 ACTIVE

64.06

54.45

64.06

TLC32044MJB

Table Data Updated on: 4/14/2002

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TLC32044CFNR [TI]

相关型号：

TLC32044CN

TLC32044CN

TLC32044E

TLC32044EFN

TLC32044EFN

TLC32044I

TLC32044IFK

TLC32044IFK

TLC32044IFK-T

TLC32044IFK-T

TLC32044IFN

TLC32044IN