ADS5510
www.ti.com
SLAS499–JANUARY 2007
Total Harmonic Distortion (THD)
Two-Tone Intermodulation Distortion (IMD3)
THD is the ratio of the power of the fundamental (PS)
to the power of the first eight harmonics (PD).
IMD3 is the ratio of the power of the fundamental (at
frequencies f1 and f2) to the power of the worst
spectral component at either frequency 2f1 – f2 or
2f2 – f1. IMD3 is either given in units of dBc (dB to
carrier) when the absolute power of the fundamental
is used as the reference, or dBFS (dB to Full-Scale)
when the power of the fundamental is extrapolated to
the converter's full-scale range.
PS
THD + 10Log
10 PD
THD is typically given in units of dBc (dB to carrier).
Spurious-Free Dynamic Range (SFDR)
The ratio of the power of the fundamental to the
highest other spectral component (either spur or
harmonic). SFDR is typically given in units of dBc
(dB to carrier).
DC Power Supply Rejection Ration (DC PSRR)
The DC PSSR is the ratio of the change in offset
error to a change in analog supply voltage. The DC
PSRR is typically given in units of mV/V.
Reference Error
The reference error is the variation of the actual
reference voltage (VREFP - VREFM) from its ideal
value. The reference error is typically given as a
percentage.
Voltage Overload Recovery Time
The voltage overload recovery time is defined as the
time required for the ADC to recover to within 1% of
the full-scale range in response to an input voltage
overload of 10% beyond the full-scale range.
13
Submit Documentation Feedback
BB [ BURR-BROWN CORPORATION ]
