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TCM37C14ADW Datasheet(PDF) 1 Page - Texas Instruments |
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TCM37C14ADW Datasheet(HTML) 1 Page - Texas Instruments |
1 / 23 page TCM37C14A, TCM37C15A PCM COMBO WITH PROGRAMMABLE GAIN CONTROL SLWS018B – JUNE 1996 – REVISED MAY 1998 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Meet CCITT/(D3/D4) Channel Bank Recommendations for Input Signals Greater than – 55 dBm0 D Programmable Transmit and Receive Gain Control With Pin-Selectable Gain/Attenuation Levels D Includes Differential Output on the TCM37C14A D Precision Switched-Capacitor Filters and Converters D Improved Version TCM29C13A Series COMBOs (CODEC and Filters) D Low Power CMOS – Operating Mode...70 mW Typical – Power-Down Mode...7 mW Typical D Internal Sample-and-Hold and Autozero Functions D Precision Internal Voltage References D TCM37C14A Features Pin-Selectable µ-Law or A-Law Companding and Pin-Selectable Master Clock Rate (1.536 MHz, 1.544 MHz, and 2.048 MHz Available) D TCM37C15A is 2.048 MHz A-Law Only description The TCM37C14A and TCM37C15A PCM combo with programmable gain control devices are single-chip PCM combos (pulse-code-modulated CODECs with voice-band filtering). They are designed to perform transmit encoding (A/D conversion) and receive decoding (D/A conversion), as well as the transmit and receive filtering functions required to meet CCITT/(D3/D4) G.711 and G.714 specifications in a PCM system. Each device provides all the functions required to interface a full-duplex, 4-line voice telephone circuit with a TDM (time-division-multiplexed) system, and also perform the encoding and decoding of call progress tones. The TCM37C14A and TCM37C15A are based on the proven TI TCM29C13A core, and have the added feature of programmable transmit and receive gain. Primary applications include line interface for digital transmission and switching of T1/E1 carrier (PABX [private branch automatic exchange] and central office telephone systems), subscriber line concentrators, digital encryption systems, and digital signal processing. They are intended to be used at the analog termination of a PCM line or trunk to the POTS (plain old telephone system) local-loop line. The TCM37C15A is available in 20-pin DW SOIC (small-outline IC) or 20-pin N PDIP (plastic dual-in-line package) packages, and the TCM37C14A is available in a 24-pin DW SOIC package and includes differential output. All are characterized for operation from – 40 °C to 85°C. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright © 1998, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VBB PWRO+ PWRO – RIN RS1 RS2 GSR GS1 GS0 CLKSEL PCMIN FSR VCC GSX TS1 TS2 ANLGIN AGND TSX PCMOUT FSX ASEL MCLK DGND TCM37C14A ...DW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VBB PWRO+ RIN RS1 RS2 GSR GS1 GS0 PCMIN FSR VCC GSX TS1 TS2 ANLGIN AGND PCMOUT FSX MCLK DGND TCM37C15A ...DW OR N PACKAGE (TOP VIEW) |
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