Product Summary

The TP3057WM is an A-law monolithic PCM CODEC/filter utilizing the A/D and D/A conversion architecture and a serial PCM interface. The TP3057WM is fabricated using Nationals advanced double-poly CMOS process (microCMOS). The encode portion of the TP3057WM 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 m-law or A-law PCM format.

Parametrics

TP3057WM absolute maximum ratings: (1)VCC to GNDA: 7V; (2)VBB to GNDA:-7V; (3)Voltage at any Analog Input or Output: VCC+0.3V to VBB-0.3V; (4)Voltage at any Digital Input or Output: VCC+0.3V to GNDA-0.3V; (5)operating Temperature Range: -25℃ to +125℃; (6)Storage Temperature Range: -65℃ to +150℃; (7)Lead Temperature (Soldering, 10 seconds): 300℃; (8)ESD (Human Body Model): 2000V; (9)Latch-Up Immunity =100 mA on any Pin.

Features

TP3057WM features: (1)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; m-law or A-law compatible COder and DECoder; internal precision voltage reference; Serial I/O interface; Internal auto-zero circuitry; (2)A-law, 16-pin-TP3057; (3)Designed for D3/D4 and CCITT applications; (4)g5V operation; (5)Low operating powerDtypically 50 mW; (6)Power-down standby modeDtypically 3 mW; (7)Automatic power-down; (8)TTL or CMOS compatible digital interfaces; (9)Maximizes line interface card circuit density; (10)Dual-In-Line or surface mount packages; (11)See also AN-370, Techniques for Designing with CODEC/Filter COMBO Circuits.

Diagrams

TP3057WM block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TP3057WM
TP3057WM
National Semiconductor (TI)
Audio CODECs
Data Sheet
0-180: $2.41
180-270: $2.20
270-540: $1.91
540-1035: $1.53
TP3057WM/63SN
TP3057WM/63SN
National Semiconductor (TI)
Audio CODECs
Data Sheet
0-1000: $1.54
1000-3000: $1.46
3000-5000: $1.40
TP3057WM/NOPB
TP3057WM/NOPB
National Semiconductor (TI)
Audio CODECs
Data Sheet
0-1: $3.29
1-25: $2.69
25-100: $2.25
100-250: $2.20
TP3057WMX/NOPB
TP3057WMX/NOPB
National Semiconductor (TI)
Audio CODECs
Data Sheet
0-575: $1.92
575-1000: $1.54
1000-2500: $1.46
2500-5000: $1.40
TP3057WMX
TP3057WMX
National Semiconductor (TI)
Audio CODECs
Data Sheet
0-1000: $1.53
1000-3000: $1.46
3000-5000: $1.40