Product Summary

The AD7730BRZ is a complete analog front end processor for weigh-scale and pressure measurement applications. The device accepts low-level signals directly from a transducer and outputs a serial digital word. The AD7730BRZ features two buffered differential programmable gain analog inputs as well as a differential reference input. The peak-to-peak resolution achievable directly from the part is 1 in 230,000 counts. The AD7730BRZ contains self-calibration and system calibration options, and features an offset drift of less than 5 nV/℃ and a gain drift of less than 2 ppm/℃. The applications of it are Weigh Scales and Pressure Measurement.

Parametrics

AD7730BRZ absolute maximum ratings: (1)AVDD to AGND: -0.3 V to +7 V; (2)AVDD to DGND: –0.3 V to +7 V; (3)DVDD to AGND: –0.3 V to +7 V; (4)DVDD to DGND: –0.3 V to +7 V; (5)AGND to DGND: –5 V to +0.3 V; (6)AVDD to DVDD: –2 V to +5 V; (7)Analog Input Voltage to AGND: –0.3 V to AVDD + 0.3 V; (8)Reference Input Voltage to AGND: –0.3 V to AVDD + 0.3 V; (9)AIN/REF IN Current (Indefinite): 30 mA; (10)Digital Input Voltage to DGND: –0.3 V to DVDD + 0.3 V; (11)Digital Output Voltage to DGND: –0.3 V to DVDD + 0.3 V; (12)Output Voltage (ACX, ACX, D0, D1) to DGND: –0.3 V to AVDD + 0.3V; (13)Operating Temperature Range: Industrial (B Version): –40℃ to +85℃; (14)Storage Temperature Range: –65℃ to +150℃; (15)Junction Temperature: +150℃.

Features

AD7730BRZ features: (1)Resolution of 230,000 Counts (Peak-to-Peak); (2)Offset Drift: 5 nV/8℃; (3)Gain Drift: 2 ppm/8℃; (4)Line Frequency Rejection: ＞150 dB; (5)Buffered Differential Inputs; (6)Programmable Filter Cutoffs; (7)Specified for Drift Over Time; (8)Operates with Reference Voltages of 1 V to 5 V; (9)Two-Channel Programmable Gain Front End; (10)On-Chip DAC for Offset/TARE Removal; (11)FASTStep Mode; (12)AC or DC Excitation; (13)Single Supply Operation.

Diagrams

AD7730BRZ block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
AD7730BRZ
AD7730BRZ

IC ADC BRIDGE TRANSDUCER 24-SOIC
Data Sheet
0-1: $11.03
1-10: $10.20
10-100: $8.71
100-250: $7.99
250-500: $7.61
500-1000: $7.35
AD7730BRZ-REEL
AD7730BRZ-REEL

IC ADC BRDGE TRANSDCR 24SOIC TR
Data Sheet
0-1000: $7.35
AD7730BRZ-REEL7
AD7730BRZ-REEL7

IC ADC BRDGE TRANSDCR 24SOIC
Data Sheet
0-1: $11.36
1-10: $10.53
10-25: $9.65
25-100: $8.99