PDSP16510AMA

· Completely self contained FFT Processor
· Internal RAM supports up to1024 complex points
· 16 bit data and coefficients plus block floating point for increased dynamic range
· 450 MIP operation gives 98 microsecond transforma-tion times for 1024 points
· Up to 40MHz sampling rates with A grade multiple devices.
· Internal window operator gives 67dB side lobe attenuation and needs no external ROM.
· 132 pin surface mount package

Supply voltage Vcc                                     -0.5V to 7.0V
Input voltage V_IN                             -0.5V to Vcc + 0.5V
Output voltage V_OUT                       -0.5V to Vcc + 0.5V
Clamp diode current per pin I_K (see note 2)       18mA
Static discharge voltage (HMB)                            500V
Storage temperature T_S                        -65 to 150
Junction Temperature, Military                            155
Package power dissipation                           5000mW

1. Exceeding these ratings may cause permanent damage. Functional operation under these conditions is not implied.
2. Maximum dissipation or 1 second should not be exceeded, only one output to be tested at any one time.
3. Exposure to absolute maximum ratings for extended periods may affect device reliablity.
4. Current is defined as positive into the device.

The PDSP16510AMA performs Forward or Inverse Fast Fourier Transforms on complex or real data sets containing up to 1024 points. Data and coefficients are each represented by 16 bits, with block floating point arithmetic for ncreased
dynamic range.

An internal RAM is provided which can hold up to 1024 complex data points. This removes the memory transfer bottleneck, inherent in building block solutions. Its organisa-tion allows the PDSP16510AMA to simultaneously input new data, transform data stored in the RAM, and to output previous results. No external buffering is needed for transforms con-taining up to 256 points, and the PDSP16510 can be directly connected to an A/D converter to perform continuous trans-forms. The user can choose to overlap data blocks by either 0%, 50%, or 75%. Inputs and outputs are asynchronous to the 40MHz system clock used for internal operations.

The latter gives 67dB side lobe attenuation. The operator values of PDSP16510AMA are calculated internally and do not require an external ROM nor do they incur any time penalty.

The PDSP16510AMA's outputs the real and imaginary components of the frequency bins. These can be directly connected to the PDSP16330 in order to produce magnitude and phase values from the complex data.