AD7730BRUZ - 24-Bit Sigma-Delta ADC for Load Cells | Analog Devices
MPN: AD7730BRUZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $17.87 | $17.87 |
| 10 | $16.5 | $165.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $12.8 | $6,400.00 |
| 1,000 | $11.5 | $11,500.00 |
Drop-in alternatives for AD7730BRUZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD7730BRUZ-REEL
β Drop-Inπ Reference alternative (not in catalog)
AD7730BRUZ-REEL7
β Drop-Inβ In Stock
$11.5 / Unit
View Datasheet βAD7730BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 bit |
| Number of Channels | 2 Channel |
| Interface Type | Serial |
| Sampling Rate | 2 kSPS |
| Input Voltage Range | -0.8 V to +0.8 V |
| Supply Voltage | 5 V |
| Power Dissipation | 125 mW |
| Operating Temperature Range | -40Β°C to +85Β°C |
| Package Type | TSSOP-24 |
| Mounting Style | SMD/SMT |
| ADC Type | Sigma-Delta |
| Resolution (Counts) | 230,000 counts peak-to-peak |
| Offset Drift | 5 nV/Β°C |
| Gain Drift | 2 ppm/Β°C |
| Line Frequency Rejection | >150 dB |
| RoHS | Compliant |
AD7730BRUZ Pin Configuration
| Pin 1 | SCLK β Serial clock input |
| Pin 2 | MCLK IN β Master clock input |
| Pin 3 | MCLK OUT β Master clock output |
| Pin 4 | CS β Chip select (active low) |
| Pin 5 | RESET β Reset input (active low) |
| Pin 6 | SYNC β Synchronization input |
| Pin 7 | AVDD β Analog power supply |
| Pin 8 | AVDD β Analog power supply |
| Pin 9 | AIN1(+) β Analog input 1 positive |
| Pin 10 | AIN1(-) β Analog input 1 negative |
| Pin 11 | AIN2(+) β Analog input 2 positive |
| Pin 12 | AIN2(-) β Analog input 2 negative |
| Pin 13 | REFIN(+) β Reference input positive |
| Pin 14 | REFIN(-) β Reference input negative |
| Pin 15 | AGND β Analog ground |
| Pin 16 | AGND β Analog ground |
| Pin 17 | DGND β Digital ground |
| Pin 18 | DVDD β Digital power supply |
| Pin 19 | DOUT β Serial data output |
| Pin 20 | DIN β Serial data input |
| Pin 21 | RDY β Ready output (active low) |
| Pin 22 | POL β Polarity input |
| Pin 23 | NC β No connect |
| Pin 24 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7730BRUZ is suitable for 6 applications: Weigh Scales, Pressure Measurement, Industrial Process Control, Medical Monitoring, Test and Measurement, Portable Instruments.
Weigh Scales
The AD7730BRUZ is ideal for weigh scales due to its high resolution (230,000 counts) and low offset drift (5 nV/Β°C). It directly interfaces with load cells, providing accurate weight measurements. The programmable gain allows connection to various load cell sensitivities, and the line frequency rejection (>150 dB) ensures stable readings in industrial environments.
Recommended
Pressure Measurement
For pressure sensors, the AD7730BRUZ accepts low-level signals from bridge transducers and converts them to high-resolution digital data. Its bipolar input ranges (Β±10 mV to Β±80 mV) accommodate various pressure sensor outputs. The device's low gain drift (2 ppm/Β°C) ensures accuracy over temperature, making it suitable for industrial pressure transmitters.
Recommended
Industrial Process Control
In process control, the AD7730BRUZ provides precise measurement of transducer signals, enabling accurate monitoring and control. Its serial interface simplifies integration with microcontrollers, and the programmable gain allows adaptation to different sensor types. The device's robust performance over -40Β°C to +85Β°C makes it reliable in harsh industrial settings.
Recommended
Medical Monitoring
The AD7730BRUZ's high resolution and low noise are beneficial for medical devices such as patient scales and pressure monitors. Its low power consumption (125 mW) supports battery-operated equipment. The device's small TSSOP-24 package fits compact medical designs, and its accuracy ensures reliable patient data.
Recommended
Test and Measurement
For test equipment, the AD7730BRUZ offers high-resolution conversion of sensor signals, making it suitable for precision measurement instruments. Its programmable gain and multiple input ranges provide flexibility in various test setups. The device's serial output simplifies data acquisition, and its stability over temperature ensures consistent measurements.
Recommended
Portable Instruments
The AD7730BRUZ's low power consumption and small package make it ideal for portable instruments like handheld scales and pressure gauges. Its high resolution ensures accurate readings, and the serial interface allows easy connection to low-power microcontrollers. The device's wide operating temperature range supports outdoor use.
Recommended
Engineering reference data for AD7730BRUZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7730BRZ | AD7730BRUZ-REEL | ADS1261BIRHBR |
|---|---|---|---|---|
| Package | TSSOP-24 | SOIC-24 | TSSOP-24 | VQFN-32 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit |
| Number of Channels | 2 | 2 | 2 | 2 |
| Sampling Rate | 2 kSPS | 2 kSPS | 2 kSPS | 2 kSPS |
| Input Voltage Range | -0.8 V to +0.8 V | -0.8 V to +0.8 V | -0.8 V to +0.8 V | [DATA_NEEDED] |
| Power Dissipation | 125 mW | 125 mW | 125 mW | [DATA_NEEDED] |
| Operating Temperature Range | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +125Β°C |
Key Differentiators
- High resolution of 230,000 counts peak-to-peak (vs ADS1261BIRHBR)
- Low offset drift of 5 nV/Β°C (vs ADS1261BIRHBR)
- Line frequency rejection >150 dB (vs ADS1261BIRHBR)
Design Notes
The AD7730BRUZ requires a single +5 V supply. Use separate analog (AVDD) and digital (DVDD) supplies with proper decoupling capacitors (0.1 Β΅F and 10 Β΅F) placed close to the pins. A low-noise reference voltage is essential for optimal performance.
For best noise performance, use a ground plane and separate analog and digital ground areas, connecting them at a single point. Keep analog input traces short and shielded from digital signals. Place the reference decoupling capacitor close to the REFIN pins.
Avoid exceeding the absolute maximum input voltage of -0.8 V to +0.8 V on the analog inputs. Ensure the reference voltage is stable and within specified range. Use the on-chip calibration features to correct offset and gain errors for accurate measurements.
Compliance Information
RoHS compliant per distributor data. Other compliance info not specified in provided data.
