HX711 Weight Sensor — OKY3478-2

Product Model:

OKY3478-2

HX711 Weighing Sensor 24-bit A/D Conversion Adapter Load Cell Amplifier Board Weight Sensors

Product Description

Two selectable differential inputs
· On-chip low noise programmable amplifier with selectable gains of 64 and 128
· On-chip voltage regulator circuit can directly supply power to external sensors and on-chip A / D converters
· The on-chip clock oscillator does not require any external components, and an external crystal or clock can also be used if necessary
· Power-on automatic reset circuit
· Simple digital control and serial communication: all controls are input by pins, and the on-chip registers do not need to be programmed
Selectable output data rate of 10Hz or 80Hz
· Simultaneous suppression of 50Hz and 60Hz power interference
· Power consumption (including regulated power supply circuit): Typical working current: <1.7mA, power-off current: <1μA
· Working voltage range: 2.6 ~ 5.5V
· Operating temperature range: -20 ~ + 85 °

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Product Details

Product Description

711 is a 24-bit A / D converter chip designed for high-precision electronic scales. Compared with other chips of the same type, this chip integrates peripheral circuits required by other chips of the same type, including regulated power supplies, on-chip clock oscillators, etc. It has the advantages of high integration, fast response speed, and strong anti-interference. The overall cost of the electronic scale is reduced, and the performance and reliability of the entire scale are improved. The interface and programming of this chip with the back-end MCU chip is very simple, all control signals are driven by pins, and there is no need to program the registers inside the chip. The input selection switch can arbitrarily select channel A or channel B, and is connected to its internal low-noise programmable amplifier. The programmable gain of channel A is 128 or 64, and the corresponding full-scale differential input signal amplitude is ± 20mV or ± 40mV, respectively. Channel B has a fixed gain of 32 for system parameter detection. The regulated power supply provided in the chip can directly supply power to external sensors and the A / D converter in the chip, no additional analog power supply is required on the system board. The on-chip clock oscillator does not require any external components. The power-on auto-reset function simplifies the initialization process at startup.