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Description
The AD7730L is a complete analog front end for weigh-scale and pressure measurement applications. The device accepts low-level signals directly from a transducer and outputs a serial digital word. The input signal is applied to a proprietary programmable gain front end based around an analog modulator. The modulator output is processed by a low pass programmable digital filter, allowing adjustment of filter cutoff, output rate and settling time. The part features two buffered differential programmable gain analog inputs as well as a differential reference input. The device operates from a single +5 V supply. It accepts four unipolar analog input ranges: 0 mV to +10 mV, +20 mV, +40 mV and +80 mV and four bipolar ranges: ±10 mV, ±20 mV, ±40 mV and ±80 mV. The peak-to-peak resolution achievable directly from the part is 1 in 110,000 counts. An on-chip 6-bit DAC allows the removal of TARE voltages. Clock signals for synchronizing ac excitation of the bridge are also provided. The serial interface on the part can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors. The AD7730L contains self-calibration and system calibration options, and features an offset drift of less than 5 nV/°C and a gain drift of less than 3 ppm/°C. The part is available in a 24-lead SOIC and 24-lead TSSOP package. It is a lower power version of the AD7730 (approximately 1/3 the power).
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The parameters and performance indicators of this product are sourced from the internet. In case of discrepancies, please refer to the manufacturer's technical specifications!！
| QUANTITY | UNIT PRICE | PLUS UNIT PRICE | TOTAL PRICE |
|---|---|---|---|
| ≥1: | US $40.18950 | US $36.17055 | US $36.17055 |
| ≥2: | US $40.18950 | US $36.17055 | US $72.34110 |
| ≥5: | US $38.84985 | US $34.96486 | US $174.82430 |
| ≥10: | US $38.31399 | US $34.48259 | US $344.82590 |
| ≥20: | US $38.04606 | US $34.24145 | US $684.82900 |
| ≥30: | US $37.51020 | US $33.75918 | US $1012.77540 |
| ≥50: | US $37.51020 | US $33.75918 | US $1687.95900 |
| ≥100: | US $37.24227 | US $33.51804 | US $3351.80400 |
| ≥500: | US $36.97434 | US $33.27691 | US $16638.45500 |
Substitute (equivalent) Product
| Product Name | Description |
|---|---|
| AD7730LBRMZ | 24-Bit, Low Noise, Low Power, Sigma-Delta ADC |
| AD7730LBWZ | 24-Bit, Low Noise, Low Power, Sigma-Delta ADC |
| AD7730ARZ | 24-Bit, Low Noise, Low Power, Sigma-Delta ADC |
| AD7730ARMZ | 24-Bit, Low Noise, Low Power, Sigma-Delta ADC |
| AD7730AWZ | 24-Bit, Low Noise, Low Power, Sigma-Delta ADC |
Product Usage
The AD7730LBRZ is a precision, low-power, complete analog front-end for weigh scales and other bridge sensor applications from Analog Devices. It integrates a low noise programmable gain amplifier (PGA), a high-resolution sigma-delta analog-to-digital converter (ADC), and an excitation current source for the sensor.
Weigh Scales:
Force Measurement Systems:
Pressure Sensors:
Level Sensors:
Industrial Automation:
A typical circuit using the AD7730LBRZ might include the following components:
Here's a simple example of how you might initialize and read data from the AD7730LBRZ using a microcontroller (e.g., Arduino):
Required#include <SPI.h>
#define AD7730_CS_PIN 10
void setup() {
Serial.begin(9600);
pinMode(AD7730_CS_PIN, OUTPUT);
digitalWrite(AD7730_CS_PIN, HIGH); // Deselect the AD7730
SPI.begin();
}
void loop() {
uint32_t data = readAD7730();
Serial.println(data);
delay(1000); // Read data every second
}
uint32_t readAD7730() {
uint32_t result = 0;
digitalWrite(AD7730_CS_PIN, LOW); // Select the AD7730
delayMicroseconds(10); // Wait for the device to become ready
// Read 3 bytes (24 bits) of data
for (int i = 0; i < 3; i++) {
result <<= 8;
result |= SPI.transfer(0x00);
}
digitalWrite(AD7730_CS_PIN, HIGH); // Deselect the AD7730
return result;
}
This code initializes the SPI interface, reads the 24-bit data from the AD7730LBRZ, and prints it to the serial monitor.
The AD7730LBRZ is a versatile and precise analog front-end suitable for a wide range of applications requiring accurate sensor data. Its integration into circuits for weigh scales, force measurement, pressure sensors, and industrial automation can significantly enhance the performance and reliability of these systems.
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All UTSOURCE purchases have a 90 days money back return policy, plus a 100 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
AD7730LBRZ
AD7730LBRZ has several brands around the world that may have alternate names for AD7730LBRZ due to regional differences or acquisition. AD7730LBRZ may also be known as the following names:
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