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Overview and Specifications:

CJMCU-711 is a designed for high-precision electronic scales
designed for 24-bit A / D converter chip. Compared with the same type of other
chip that integrates the peripheral circuits including power supply, on-chip
clock oscillator with other types of chips needed, high integration, fast
response, strong anti-interference advantages. Reducing the overall cost of the
electronic scale, improving the overall performance and reliability. The chip
with the rear end of the MCU chip interfaces and programming is very simple, all
control signals from the pin driver without internal chip registers. Input
selector switch can select any channel A or channel B, and its low-noise
programmable internal amplifier is connected. A channel programmable gain of 128
or 64, corresponding to the full amount of the differential input signal
amplitude was ± 20mV or ± 40mV. Channel B, compared with a fixed gain of 32 for
the parameter detection system. Chip provided power supply can provide power
directly to the A and external sensor chip A / D converter, analog system board
without additional power supply. Chip clock oscillator does not require any
external components. Power-on reset function automatically simplifies the
initialization boot.

Two selectable differential inputs

Rene-chip programmable low-noise amplifier, selectable gain of
64 and 128

Rene-chip voltage regulator supplies power directly to the
external sensor and on-chip A / D converter

Rene-chip clock oscillator requires no external components, if
necessary, may also be used an external crystal or clock

Automatic power-on reset circuit

Simple digital control and serial communication: All are
controlled by input pins, the chip registers without programming

Choose 10Hz or 80Hz output data rates

Simultaneous rejection of 50Hz and 60Hz power interference

Power consumption (including power supply circuit): Typical
operating current: lt,1.7mA, shutdown current: lt,1μA

Operating voltage range: 2.6~5.5V

Operating temperature range: -20~+ 85℃

SOP-16 16-pin package

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