NA2202/2203/2204 are C-MOS based high precision AFE with up to 128 times internal PGA (Programmable Gain Amplifier).
Internal 16/20/24-bit ΔΣ type Analog to Digital converter (ADC) can perform conversion rates from 3.125sps to 9.6ksps. NA2202/2203/2204 have error detection. (CRC8 or Check Sum.)
It is useful for noise applications.
It is also possible to turn off the CRC.
NA2202/2203/2204 support bipolar operation of analog supply voltage, for example AVDD is set in +2.5V and AVSS is in -2.5V. A negative voltage input is possible such as thermocouple.
Two matched excitation current sources supply the bias of pressure sensor, resistance temperature detectors, and so on. The matching error between two excitation current
sources is less than 1% in 3-sigma. By using low power consumption mode, power consumption can be reduced to about 1/3 of normal operation.
The conversion data rate in the low power consumption mode operates at 1/4 of the normal operation.
| Product Number | A-D Converter |
| NA2202 | 16Bit |
| NA2203 | 20Bit |
| NA2204 | 24Bit |
Analog Front End with High Gain PGA
