ZHCSPK8B December 2021 – May 2024 REF35
PRODUCTION DATA
Table 9-3 and Figure 9-3 show the captured measurement results for various DC inputs. The ADC output is captured and analyzed for output accuracy error and code spread with REF35500 as power supply versus LDO as power supply.
REF35 offers better accuracy and lower noise than the LDO device at lower quiescent current. This results in lower error in measurement as well as lower ADC output code variation across various OSR settings.
INPUT V | ADC OSR SETTING | REF35500 | LDO | ||
---|---|---|---|---|---|
ERROR | CODE SPREAD | ERROR | CODE SPREAD | ||
1.0V | 0 | 0.01mV | 32 LSB | 8.9mV | 48 LSB |
8 | 0.3mV | 10 LSB | 9.21mV | 16 LSB | |
128 | 0.38mV | 6 LSB | 9.26mV | 6 LSB | |
2.5V | 0 | 0.69mV | 32 LSB | 22.89mV | 64 LSB |
8 | 1.44mV | 10 LSB | 23.63mV | 18 LSB | |
128 | 1.17mV | 3 LSB | 23.41mV | 5 LSB | |
4V | 0 | 2.27mV | 32 LSB | 37.84mV | 48 LSB |
8 | 3.01mV | 24 LSB | 38.62mV | 24 LSB | |
128 | 2.46mV | 3 LSB | 38.09mV | 17 LSB |