有关HI7190 / HI7191负全面误差对转换频率

有关HI7190 / HI7191负全面误差对转换频率
HI7190/HI7191 Negative Full Scale Error vs
Conversion Frequency
Technical Brief February 1998 TB348.1



Introduction
This technical brief highlights a recently discovered perfor- TABLE 1. FREQUENCY RANGES WHICH EXHIBITED MID
mance anomaly with the HI7190/1. The problem occurs SCALE ERRORS
when the digital code for the notch lter is programmed (Avoid these control register frequencies)
within certain frequencies listed in Table 1(assuming a
10MHz clock). We believe the error is caused by the calibra- CONVERSION FREQUENCY