JAJSOF3A May 2023 – September 2023 INA700
PRODUCTION DATA
Table 8-4 shows the full scale voltage on shunt, bus, and temperature measurements, along with their associated step size.
PARAMETER | REGISTER ADDRESS | SIZE | FULL SCALE VALUE | RESOLUTION |
---|---|---|---|---|
Current | 7h | 16 bit, signed | ±15.728 | 480 µA/LSB |
Bus voltage | 5h | 16 bit, signed, always positive | 0 V to 40 V | 3.125 mV/LSB |
Die Temperature | 6h | 12 bit, signed | –40°C to +150°C | 125 m°C/LSB |
Power | 8h | 24 bit, unsigned | 1.6106 kW | 96 µW/LSB |
Energy | 9h | 40 bit, unsigned | 1688.85 MJ | 1.536 mJ/LSB |
Charge | Ah | 40 bit, signed | 16.493 MC | 30 µC/LSB |
The internal die temperature sensor range extends from –256°C to +256°C but is limited by the junction temperature range of –40°C to 125°C. Likewise, the bus voltage measurement range extends up to 102.4 V but is limited by silicon to 40 V.
Current, bus voltage, temperature, power, energy, and charge measurements can be read through their corresponding address registers. Values are calculated by multiplying the returned value by the corresponding LSB size.
Signed values are represented in two's compliment format.
Upon overflow, the ENERGY register will roll over and start from zero. This register value can also be reset at any time by setting the RSTACC bit in the CONFIG register.
An overflow event in the CHARGE register is indicated by the CHARGEOF bit. If an overflow condition occurs, the CHARGE register must be manually reset by setting the RSTACC bit in the CONFIG register.
See Detailed Design Procedure for a design example using these equations.