TP3057 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

TP3057
Manufacturer

TI
ChipWorker Part#

CW998550376
RoHS

Lead free / RoHS Compliant
Description

TP3052, TP3053, TP3054, TP3057, Enhanced Serial Interface CODEC/Filter COMBO Family 16-SOIC
Documentation

Datasheet

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TP3057 Specifications

Attribute	Attribute Value

Part Number	TP3057
Manufacturer	TI
ChipWorker Part#	CW998550376
Documentation	Datasheet
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RoHS	RoHS Compliant

Product Description

The TP3054, TP3057 family consists of µ-law and A-law monolithic PCM CODEC/filters utilizing the A/D and D/A conversion architecture shown inFigure 1 , and a serial PCM interface. The devices are fabricated using Nationals advanced double-poly CMOS process (microCMOS).
The encode portion of each device consists of an input gain adjust amplifier, an active RC pre-filter which eliminates very high frequency noise prior to entering a switched-capacitor band-pass filter that rejects signals below 200 Hz and above 3400 Hz. Also included are auto-zero circuitry and a companding coder which samples the filtered signal and encodes it in the companded µ-law or A-law PCM format. The decode portion of each device consists of an expanding decoder, which reconstructs the analog signal from the companded µ-law or A-law code, a low-pass filter which corrects for the sin x/x response of the decoder output and rejects signals above 3400 Hz followed by a single-ended power amplifier capable of driving low impedance loads. The devices require two 1.536 MHz, 1.544 MHz or 2.048 MHz transmit and receive master clocks, which may be asynchronous; transmit and receive bit clocks, which may vary from 64 kHz to 2.048 MHz; and transmit and receive frame sync pulses. The timing of the frame sync pulses and PCM data is compatible with both industry standard formats.
Complete CODEC and filtering system (COMBO) including:
Transmit high-pass and low-pass filtering
Receive low-pass filter with sin x/x correction
Active RC noise filters
µ-law or A-law compatible COder and DECoder
Internal precision voltage reference
Serial I/O interface
Internal auto-zero circuitry
µ-law, 16-pinTP3054
A-law, 16-pinTP3057
Designed for D3/D4 and CCITT applications
±5V operation
Low operating powertypically 50 mW
Power-down standby modetypically 3 mW
Automatic power-down
TTL or CMOS compatible digital interfaces
Maximizes line interface card circuit density
Dual-In-Line or surface mount packages
See also AN-370, "Techniques for Designing with CODEC/Filter COMBO Circuits"

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