TLV320AD16

`Complete Discrete Multitone-Based Asymmetric Digital Subscriber Line Coder/Decoder
`Supports Full Rate ADSL and G.Lite Application in Both Echo Cancellation or FDM Modes
`Integrated 14-Bit Converter for Transmitter/Receiver
`Integrated Transmit/Receive Channel Filters
`Integrated Transmit/Receive Attenuation/Gain
`Integrated Reference
`High-Speed Parallel Interface
`16-Bit 2s-Complement Data Format
`Selectable Parallel Data Transfer Rate
`Serial Configuration Port
`Eight General-Purpose Output Terminals
`Supports Multiple-Channel Configuration
`Single 3.3-V Supply
`Low Power Consumption, 450 mW at External Bias Mode
`40°C to 85°C Operational Temperature
`Hardware/Software Power Down
`100-Terminal LQFP (PZ) Package

Supply voltage range, AVDD to AGND, DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 4.5 V
Analog input voltage range to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to AVDD + 0.3 V
Digital input voltage range to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to DVDD+ 0.3 V
Operating virtual-junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 150°C
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 85°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°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.

The TLV320AD16 is a high-speed coder/decoder (codec) for a central office-side (CO) discrete-multitonebased (DMT) asymmetric-digital subscriber line (ADSL) access that supports full rate ADSL, G.lite, and  reduced-NEXT (near end cross talk) digital-filter FDM applications. The codec is a low-power device comprised of five functional blocks: transmitter (TX), receiver (RX), clock, reference, and host interface. The transmit channel of TLV320AD16 consists of selectable digital filters, a 14-bit, 8.832-MSPS DAC, a 1.104-MHz analog low-pass filter, and a transmit attenuator. The receiver channel of TLV320AD16 consists of a three programmable-gain-amplifier stages (PGA), a 138-kHz analog low-pass filter (LPF), a 14-bit, 2.208-MSPS ADC, and a 138-kHz digital LPF. The sample phase and rate can be software selected. An onboard reference circuit generates 1.5-V reference voltage for the converters.

The codec TLV320AD16 has two interface ports: a parallel port for data transfer and a serial port for control. The parallel port is 16 bits wide, and is reserved for moving data between the codec and the host transceiver, such as the TMS320C6XX. Configuration is done via the serial port. A special interface scheme enables multichannel system design. The  TLV320AD16 can be powered down via a dedicated terminal or through software control to reduce heat dissipation. Additionally, there is a general-purpose (GP) port consisting of eight output terminals for control of external circuitry.