Overview
The DAC5687IPZPR, produced by Texas Instruments, is a high-performance, dual-channel 16-bit digital-to-analog converter (DAC) designed for high-speed applications. It features integrated 2×, 4×, and 8× interpolation filters, an on-chip phase-locked loop (PLL)/voltage-controlled oscillator (VCO) clock multiplier, and comprehensive IQ compensation. This DAC is pin-compatible with the DAC5686 but offers enhanced linearity, noise performance, and crosstalk reduction. It supports various input options, including FIFO with latch on external or internal clock and even/odd multiplexed input, making it versatile for different system architectures.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Sample Rate | 500 MSPS |
| Interpolation Factors | 2×, 4×, 8× |
| Clock Multiplier | On-chip PLL/VCO |
| IQ Compensation | Offset, Gain, Phase |
| Input Options | FIFO with latch on external or internal clock, Even/Odd multiplexed input, Single port demultiplexed input |
| Output Current | 2 mA to 20 mA |
| Output Voltage | 1.8-V or 3.3-V I/O |
| On-Chip Reference | 1.2-V reference |
| Package | 100-Pin HTQFP |
| Operating Temperature | -40°C to 85°C |
Key Features
- Selectable 2×, 4×, and 8× interpolation filters
- On-chip PLL/VCO clock multiplier
- Full IQ compensation including offset, gain, and phase
- Flexible input options: FIFO with latch on external or internal clock, even/odd multiplexed input, single port demultiplexed input
- Complex mixer with 32-bit NCO and fixed frequency mixer with fS/4 and fS/2
- Differential scalable output: 2 mA to 20 mA
- Pin-compatible to DAC5686 with enhanced performance
- High performance: 81-dBc ACLR WCDMA TM1 at 30.72 MHz, 72-dBc ACLR WCDMA TM1 at 153.6 MHz
Applications
- Cellular base transceiver station transmit channel
- CDMA: W-CDMA, CDMA2000, TD-SCDMA
- TDMA: GSM, IS-136, EDGE/UWC-136
- OFDM: 802.16
- Cable modem termination system
Q & A
- What is the resolution of the DAC5687IPZPR?
The DAC5687IPZPR has a resolution of 16 bits. - What is the maximum sample rate of the DAC5687IPZPR?
The maximum sample rate is 500 MSPS. - What interpolation factors are available on the DAC5687IPZPR?
The DAC5687IPZPR supports 2×, 4×, and 8× interpolation factors. - Does the DAC5687IPZPR have on-chip clock multiplication?
Yes, it features an on-chip PLL/VCO clock multiplier. - What types of IQ compensation are supported by the DAC5687IPZPR?
The DAC5687IPZPR supports offset, gain, and phase IQ compensation. - What are the input options for the DAC5687IPZPR?
The input options include FIFO with latch on external or internal clock, even/odd multiplexed input, and single port demultiplexed input. - What is the output current range of the DAC5687IPZPR?
The output current range is from 2 mA to 20 mA. - What is the package type of the DAC5687IPZPR?
The DAC5687IPZPR is packaged in a 100-Pin HTQFP. - What are the typical applications of the DAC5687IPZPR?
Typical applications include cellular base transceiver stations, CDMA, TDMA, OFDM, and cable modem termination systems. - Is the DAC5687IPZPR pin-compatible with any other model?
Yes, it is pin-compatible with the DAC5686.
