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HX710 PDF

The HX710(A/B) is a 24-bit analog-to-digital converter (ADC) with built-in features for temperature sensing or voltage difference detection. It is designed for weigh scales and industrial control applications to interface directly with a bridge sensor. It has a fixed gain of 128, corresponding to a full-scale differential input voltage of ±20mV. The device includes an on-chip oscillator and power-on-reset circuitry requiring no external components. It can operate at data rates of 10SPS or 40SPS and rejects 50Hz and 60Hz supply noise.

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Jagadish Paul
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2K views1 page

HX710 PDF

The HX710(A/B) is a 24-bit analog-to-digital converter (ADC) with built-in features for temperature sensing or voltage difference detection. It is designed for weigh scales and industrial control applications to interface directly with a bridge sensor. It has a fixed gain of 128, corresponding to a full-scale differential input voltage of ±20mV. The device includes an on-chip oscillator and power-on-reset circuitry requiring no external components. It can operate at data rates of 10SPS or 40SPS and rejects 50Hz and 60Hz supply noise.

Uploaded by

Jagadish Paul
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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HX710(A/B)

24-Bit ADC with Built-in Temperature Sensor (HX710A)


24-Bit ADC with (DVDD-AVDD) Voltage Difference Detection (HX710B)

DESCRIPTION FEATURES
Based on Avia Semiconductors patented On-chip temperature measurement (HX701A)
technology, HX710(A/B) is a precision 24-bit DVDD and AVDD supply voltage difference
analog-to-digital converter (ADC) with built-in measurement (HX701B)
temperature sensor (HX710A) or DVDD, AVDD On-chip low noise amplifier with a gain of 128
voltage difference detection (HX710B). Its On-chip oscillator requiring no external
designed for weigh scales and industrial control component
applications to interface directly with a bridge On-chip power-on-reset
sensor.
Simple digital control and serial interface:
The input low-noise amplifier (PGA) has a pin-driven controls, no programming needed
fixed gain of 128, corresponding to a full-scale Selectable 10SPS or 40SPS output data rate
differential input voltage of 20mV, when a 5V
Simultaneous 50 and 60Hz supply rejection
reference voltage is connected to the VREF pin.
Current consumption:
On chip oscillator provides the system clock
without any external component. On-chip power- normal operation < 1.2mA, power down < 1uA
on-reset circuitry simplifies digital interface Operation supply voltage range: 2.6 ~ 5.5V
initialization. There is no programming needed Operation temperature range: -40 ~ +85
for the internal registers. All controls to the 8 pin SOP-8 package
HX710 are through the pins.

LED LCD
L1
Charger Regulator

1u 1u 0.1u
Battery

VDD
0.1u

VREF AVDD
AGND DVDD
Load-cell INN DOUT I/O
200 INP PD_SCK I/O
0.1u HX710
MCU

200

Fig. 1 Typical weigh scale application block diagram

TEL: (592) 252-9530 (P. R. China) AVIA SEMICONDUCTOR


EMAIL: market@aviaic.com

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