BUY AD7730LBRZ https://www.utsource.net/itm/p/6112575.html
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).
The AD7730LBRZ is a low power, low noise, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC) from Analog Devices. It is available in a SOIC-8 package and operates over a temperature range of -40°C to +85°C. The AD7730LBRZ features a 24-bit resolution, a signal-to-noise ratio (SNR) of 105 dB, and a low power consumption of only 1.2 mW. It has a wide input range of ±10 V and a sampling rate of up to 200 kHz. The device is suitable for a variety of applications, including data acquisition systems, industrial process control, and medical instrumentation. The AD7730LBRZ also features a built-in temperature sensor, which can be used to monitor the temperature of the system. It also has a built-in digital filter, which reduces the amount of noise in the signal. The device is also compatible with the SPI, I2C, and UART interfaces, making it easy to integrate into existing systems. (For reference only)