HX711 High Precision Electronic Scale Sensor 24-bit A / D Conversion Board

711 is a 24-bit A / D converter chip designed for high precision electronic scales. Compared with chips of the same type, the chip integrates peripheral circuits that other chips of the same type require such as voltage stabilizers, in-chip clock oscillators, ... have the advantage of high integration, fast response. strong anti-interference speed and speed. Reduce electronic weighing costs and improve performance and reliability. Interface and programming between the chip and the backside MCU chip are very simple. All control signals are controlled by pins. The input selector switch can select channel A or channel B and be connected to its internal low-noise programmable amplifier. The programmable gain of channel A is 128 or 64, and the amplitude of the full limit differential input signal is respectively ± 20mV or ± 40mV, respectively. Channel B is the fixed 32 gain for system parameter detection. The stable power supply provided in the chip can power the external sensor and the A / D converter directly in the chip and does not need to add the same power supply on the system board. The on-chip clock oscillator does not require any external equipment. The automatic reset function simplifies the start-up process. Two alternate differential inputs · low-noise programmable amplifier in-chip with optional gain of 64 and 128 on-chip voltage regulation circuit can directly supply power to external sensors and A / D on converter chipIn-chip clock oscillator does not require any external device and can also use an external oscillator or crystal clock when needed automatic resetSimple digital control and serial communication: all controls are inputted by pins, no programming required for in-chip registers 80HzReduction 50Hz and 60Hz power noise synchronization power consumption (including stable power supply circuit): typical working current: <1.7ma, off current: <1 voltage range operation: 2.6 ~ 5.5vOperating temperature range: -20 ~ + 85 ℃ · ssop -16 packing 16