Features: `Complete PCM Codec and Filtering Systems Include:
Transmit High-Pass and Low-Pass Filtering
Receive Low-Pass Filter With (sin x)/x Correction
Active RC Noise Filters
-Law or A-Law Compatible Coder and Decoder
Internal Precision Voltage Reference
Serial I/O Interface
Internal Autozero Circuitry
`-Law TP13064B and TP3064B
`A-Law TP13067B and TP3067B
`±5-V Operation
`Low Operating Power . . . 70 mW Typ
`Power-Down Standby Mode . . . 3 mW Typ
`Automatic Power Down
`TTL- or CMOS-Compatible Digital Interface
`Maximizes Line Interface Card Circuit Density
`Improved Versions of National Semiconductor TP3064, TP3067, TP3064-X, and TP3067-XPinout
SpecificationsSupply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 7 V
Supply voltage, VBB (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage range at any analog input or output . . . . . . . . . . . . . . . . . . . . . . . . VCC + 0.3 V to VBB 0.3 V
Voltage range at any digital input or output . . . . . . . . . . . . . . . . . . . . . . . VCC + 0.3 V to GND 0.3 V
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . See Dissipation Rating Table
Operating free-air temperature range: TP3064B, TP3067B . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
TP13064B, TP13067B . . . . . . . . . . . . . . . . . . . . . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . . . . . 40°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DW or N package . . . . . . . . . . 260°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltages are with respect to GND.
DescriptionThe TP3064B, TP3067B, TP13064B, and TP13067B each comprise a single-chip pulsecode- modulation encoder and decoder (PCM codec), and PCM line filter. TP3064B, TP3067B, TP13064B, and TP13067B also provide band-pass filtering of the analog signals prior to the encoding, and low-pass filtering after the decoding of voice signals and call-progress tones. All the functions required to interface a full-duplex (2-wire) voice telephone circuit with a time-division- multiplexed (TDM) system are included on-chip. These devices are pin-for-pin compatible with the National Semiconductor TP3064 and TP3067. Primary applications include:
• Line interface for digital transmission and switching of T1 carrier, PABX (private automated branch exchange), and central office telephone systems
• Subscriber line concentrators
• Digital-encryption systems
• Digital voice-band data-storage systems
• Digital signal processing
These TP3064B, TP3067B, TP13064B, and TP13067B devices are designed to perform the transmit encoding (A/D conversion) and receive decoding (D/A conversion) as well as the transmit and receive filtering functions in a PCM system, and are intended to be used at the analog termination of a PCM line or trunk. TP3064B, TP3067B, TP13064B, and TP13067B require a transmit master clock and a receive master clock that may be asynchronous (1.536 MHz, 1.544 MHz, or 2.048 MHz), transmit and receive data clocks that are synchronous with the master clock (but can vary from 64 kHz to 2.048 MHz), and transmit and receive frame-sync pulses. The TP3064B and TP13064B contain patented circuitry to achieve low transmit channel idle noise and are not recommended for applications in which the composite signals on the transmit side are below 55 dBm0.
TP13064B Data Sheet
