Product Summary

The AD7731BRU is a Low Noise, High Throughput 24-Bit Sigma-Delta ADC. The AD7731BRU has a proprietary programmable gain front end that allows it to accept a range of input signal ranges, including low level signals, directly from a transducer. The sigmadelta architecture of the part consists of an analog modulator and a low pass programmable digital filter, allowing adjustment of filter cutoff, output rate and settling time. The AD7731BRU is available in a 24-lead plastic DIP, a 24-lead SOIC and 24-lead TSSOP package.

Parametrics

AD7731BRU 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 (D0, D1)to DGND: –0.3 V to AVDD + 0.3 V; (13)Operating Temperature Range Industrial (B Version): –40℃ to +85℃; (14)Storage Temperature Range: –65℃ to +150℃; (15)Junction Temperature: +150℃.

Features

AD7731BRU features: (1)24-Bit Sigma-Delta ADC; (2)16 Bits p-p Resolution at 800 Hz Output Rate; (3)Programmable Output Rates up to 6.4 kHz; (4)Programmable Gain Front End; (5)0.0015% Nonlinearity; (6)Buffered Differential Inputs; (7)Programmable Filter Cutoffs; (8)FASTStep Mode for Channel Sequencing; (9)Single Supply Operation.

Diagrams

AD7731BRU pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
AD7731BRU
AD7731BRU

IC ADC 24BIT SIGMA-DELTA 24TSSOP
Data Sheet
0-21: $11.79
AD7731BRU-REEL7
AD7731BRU-REEL7

IC ADC 24BIT SIGMA-DELTA 24TSSOP
Data Sheet
0-1000: $8.50
AD7731BRUZ-REEL7
AD7731BRUZ-REEL7

IC ADC 24BIT SIGMA-DELTA 24TSSOP
Data Sheet
0-1000: $7.57
AD7731BRUZ
AD7731BRUZ

IC ADC 24BIT SIGMA-DELTA 24TSSOP
Data Sheet
0-1: $11.36
1-10: $10.51
10-100: $8.98
100-250: $8.24
250-500: $7.84
500-1000: $7.57
AD7731BRUZ-REEL
AD7731BRUZ-REEL

IC ADC 24BIT SIGMA-DELTA 24TSSOP
Data Sheet
0-2500: $7.57