Description
Name: HX711 Weighing Sensor 24-bit A/D Conversion Adapter Load Cell Amplifier Board Weight Sensors
Description:
The Load Cell Amplifier board for the HX711 IC that allows you to easily read load cells to measure weight. By connecting the amplifier to your micro controller you will be able to read the changes in the resistance of the load cell and with some calibration you’ll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale, process control, or simple presence detection of an object.
Specification:
Output Data Rate: 10Hz or 80Hz optional
Simultaneous rejection of 50Hz and 60Hz power interference
Operating Current: <1.7mA,
Shutdown Current: <1μA
Operating Voltage Range: 2.6V ~ 5.5V
Operating Temperature Range: -20℃ ~ + 85 ℃
Chip FootPrint: SOP-16 16-pin
Size: 3×2.3cm/1.18×0.91″
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.
Details:
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 °
