DAC5681Z
DAC5681Z is Digital-To-Analog Converter manufactured by Texas Instruments.
Features
- 1 16-Bit Digital-to-Analog Converter (DAC)
- 1.0 GSPS Update Rate
- 16-Bit Wideband Input LVDS Data Bus
- 8 Sample Input FIFO
- High Performance
- 73-d Bc ACLR WCDMA TM1 at 180 MHz
- 2x to 32x Clock Multiplying PLL/VCO
- 2x or 4x Interpolation Filters
- Stopband Transition 0.4- 0.6 Fdata
- Filters Configurable in Either Low-Pass or
High-Pass Mode
- Allows Selection of Higher Order Image
- On-Chip 1.2-V Reference
- 2 to 20-m A Differential Scalable Output
- 64-Pin 9-mm × 9-mm VQFN Package
2 Applications
- Cellular Base Stations
- Broadband Wireless Access (BWA)
- Wi MAX 802.16
- Fixed Wireless Backhaul
- Cable Modem Termination System (CMTS)
3 Description
The DAC5681Z is a 16-bit 1.0 GSPS digital-to-analog converter (DAC) with wideband LVDS data input, integrated 2x to 4x interpolation filters, on-board clock multiplier, and internal voltage reference. The DAC5681Z offers superior linearity, noise, crosstalk, and PLL phase noise performance.
The DAC5681Z integrates a wideband LVDS port with on-chip termination. Full-rate input data can be transferred to a single DAC channel, or half-rate and 1/4-rate input data can be interpolated by on-board 2x or 4x FIR filters. Each interpolation FIR is configurable in either low-pass or high-pass mode, allowing selection of a higher order output spectral image. An on-chip delay lock loop (DLL) simplifies LVDS interfacing by providing skew control for the LVDS input data clock.
The DAC5681Z is characterized for operation over the industrial temperature range of
- 40°C to 85°C and is available in a 64-pin VQFN package. Other members of the family include the dual-channel, interpolating DAC5682Z and the single-channel, noninterpolating DAC5681.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
VQFN (64)
9.00 mm × 9.00mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Functional Block Diagram
CLKVDD
(1.8V)
LPF DVDD
(1.8V)
VFUSE...
