The TDA9935 from NXP Semiconductors is a dual 14-bit Digital/Analogue Converter (DAC) designed for broadband wireless and instrumentation applications. Thanks to its direct IF conversion capabilities, the device delivers outstanding dynamic performance in multi-carrier wireless environments.
Supplied in an HTQFP80 package, the TDA9935 features an internal sampling rate of up to 160MSample/S (MSPS). It provides an extremely competitive solution for WCDMA, CDMA2000 and GSM/EDGE transmitters, as well as high data-rate radio services including Wireless Local Loop (WLL), Local Multipoint Distribution Service (LMDS), and Broadband Wireless Access (BWA).
Integrating a low-noise PLL and requiring a single 3.3V power supply, the device reduces architectural complexity and hence overall system cost. Spurious Free Dynamic Range (SFDR) is -80dBc at 2.5MHz.
Dynamic Performance Examples
Fout (MHz)
Fclk (MSPS)
SFDR (dBc)
2.5
80
80
5
80
72
21
80
79
The TDA 9935 is implemented in an advanced CMOS process for best-in-class power dissipation performance. It is characterised for operation across the full industrial temperature range.
Features
Dual 14-bit DAC
-80dBc SFDR at 2.5MHz
-79dBc SFDR at 21MHz
160MSPS maximum update rate
2x interpolation filter
Single 3.3V supply voltage
Low noise integrated PLL
HTQFP80 package
Low power consumption
Industrial temperature range: -40°C to +85°C
Applications
Broadband wireless systems
Medical
Digital radio links
Cellular base stations
Instrumentation
Direct IF synthesis
I/Q modulation systems
For further information, including a copy of the TDA9935 Datasheet, pleaseclick here.
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