AD7730BRZ Model Information

Product Number

• AD7730BRZ

General Description

The AD7730BRZ is a high-precision, low-power bridge transducer analog front-end designed for weigh-scale and pressure measurement applications. It features a sigma-delta ADC with a programmable gain front end, capable of handling low-level signals directly from a transducer and outputting a serial digital word.

Key Features

• Resolution: Up to 24 bits (peak-to-peak)
• Offset Drift: < 5 nV/°C
• Gain Drift: < 3 ppm/°C
• Line Frequency Rejection: >150 dB
• Buffered Differential Inputs
• Programmable Filter Cutoffs
• On-Chip DAC for Offset/TARE Removal
• FASTStep™ Mode
• AC or DC Excitation
• Single Supply Operation

Applications

• Weigh Scales
• Pressure Measurement
• Portable Weigh Scales

Specifications

• Power Consumption: 15 mW typical
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: +4.75 V to +5.25 V (AVDD), +2.7 V to +5.25 V (DVDD)
• Analog Input Ranges:Unipolar: 0 mV to +10 mV, +20 mV, +40 mV, +80 mVBipolar: ±10 mV, ±20 mV, ±40 mV, ±80 mV
• Output Noise:Chopping Mode (CHP = 1): 24-bit resolution with typical output noise levelsNon-Chopping Mode (CHP = 0): 24-bit resolution with typical output noise levels

Package Information

• Package Type: 24-Lead Standard Small Outline Package (SOIC_W)
• Dimensions:Length: 12.80 mm (0.504 in)Width: 7.60 mm (0.299 in)Height: 1.27 mm (0.050 in)

Ordering Information

• Ordering Code: AD7730BRZ
• Temperature Range: -40°C to +85°C
• Package Option: 24-Lead Standard Small Outline Package (SOIC_W)

Additional Information

• Evaluation Board: EVAL-AD7730EBZ available for performance evaluation
• Compliance: RoHS Compliant

Notes

• The AD7730BRZ is designed for high-precision applications requiring low power consumption and excellent noise performance.
• The device supports both AC and DC excitation modes, making it suitable for a wide range of applications.
• The on-chip DAC allows for easy removal of TARE voltages, enhancing the flexibility of the device in various measurement scenarios.