AD7730BRUZ-REEL7 - 24-Bit Sigma-Delta ADC | Analog Devices
MPN: AD7730BRUZ-REEL7 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-REEL7 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
β Drop-Inβ In Stock
$11.5 / Unit
View Datasheet βAD7730BRU-REEL7
β Drop-Inπ Reference alternative (not in catalog)
AD7730BRU-REEL
β Drop-Inπ Reference alternative (not in catalog)
AD7730BRUZ-REEL
β Drop-Inπ Reference alternative (not in catalog)
AD7730BRUZ-REEL7 Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Channels | 1 Channel |
| Sampling Rate | 1.2 kSPS |
| Input Type | Differential |
| Interface Type | Serial (SPI) |
| Supply Voltage - Min | 4.75 V |
| Supply Voltage - Max | 5.25 V |
| Power Dissipation | 125 mW |
| Operating Temperature Range | -40Β°C to +85Β°C |
| Package | 24-TSSOP |
| Mounting Style | SMD/SMT |
| Number of Pins | 24 |
| Programmable Gain | Yes (up to 128) |
| Reference Type | External |
| RoHS | Compliant |
AD7730BRUZ-REEL7 Pin Configuration
| Pin 1 | SCLK β Serial clock input |
| Pin 2 | DIN β Serial data input |
| Pin 3 | DOUT β Serial data output |
| Pin 4 | CS β Chip select (active low) |
| Pin 5 | GND β Ground |
| Pin 6 | AVDD β Analog supply voltage |
| Pin 7 | AIN1+ β Analog input 1 positive |
| Pin 8 | AIN1- β Analog input 1 negative |
| Pin 9 | AIN2+ β Analog input 2 positive |
| Pin 10 | AIN2- β Analog input 2 negative |
| Pin 11 | REFIN+ β Reference input positive |
| Pin 12 | REFIN- β Reference input negative |
| Pin 13 | DVDD β Digital supply voltage |
| Pin 14 | DGND β Digital ground |
| Pin 15 | MODE β Mode select |
| Pin 16 | SYNC β Synchronization input |
| Pin 17 | RESET β Reset input (active low) |
| Pin 18 | PDR β Power-down reset |
| Pin 19 | NC β No connect |
| Pin 20 | NC β No connect |
| Pin 21 | NC β No connect |
| Pin 22 | NC β No connect |
| 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-REEL7 is suitable for 6 applications: Weigh Scales, Pressure Measurement, Industrial Process Control, Portable Instrumentation, Medical Devices, Test and Measurement.
Weigh Scales
The AD7730BRUZ-REEL7 is specifically designed for weigh-scale applications, providing high-resolution 24-bit conversion of load cell signals. Its programmable gain amplifier allows direct connection to bridge transducers with full-scale outputs as low as Β±10 mV. The device's low noise and high linearity ensure accurate weight measurements. In a typical weigh scale, the AD7730 interfaces with a load cell, converting the differential voltage into a digital word that a microcontroller processes. The on-chip digital filter and self-calibration features simplify system design and improve long-term stability. With a maximum output rate of 1.2 kSPS, it is suitable for both static and dynamic weighing applications. The AD7730's low power dissipation of 125 mW makes it ideal for battery-powered portable scales.
Recommended
Pressure Measurement
The AD7730BRUZ-REEL7 is well-suited for pressure measurement systems using bridge-type pressure sensors. Its differential inputs and programmable gain allow direct connection to pressure transducers with outputs in the millivolt range. The device's 24-bit resolution provides high accuracy, essential for industrial pressure transmitters. The AD7730's serial interface simplifies integration with microcontrollers, and its self-calibration ensures accurate readings over temperature. In a pressure transmitter, the AD7730 converts the sensor's differential voltage to a digital signal, which is then linearized and transmitted. The device's low noise performance is critical for detecting small pressure changes. With a supply voltage of 5V and low power consumption, it is suitable for loop-powered transmitters. The AD7730's digital filter can be configured to reject 50/60 Hz noise, improving measurement stability.
Recommended
Industrial Process Control
In industrial process control, the AD7730BRUZ-REEL7 provides precise analog-to-digital conversion for various sensors, including strain gauges and pressure transducers. Its high resolution and programmable gain make it versatile for different signal levels. The device's robust design operates over the industrial temperature range of -40Β°C to +85Β°C, ensuring reliability in harsh environments. The AD7730's serial interface allows easy connection to PLCs and microcontrollers, and its self-calibration reduces maintenance. In a process control loop, the AD7730 converts sensor signals with high accuracy, enabling precise control of valves and actuators. The device's low power dissipation is beneficial for field-mounted instruments. The AD7730's digital filter can be programmed to trade off speed for noise rejection, making it adaptable to various process requirements.
Recommended
Portable Instrumentation
The AD7730BRUZ-REEL7 is ideal for portable instrumentation due to its low power consumption of 125 mW and single 5V supply operation. It is used in handheld weigh scales, digital pressure gauges, and other battery-powered measurement devices. The device's small 24-TSSOP package saves board space, and its serial interface minimizes pin count. The AD7730's programmable gain allows direct connection to various sensors without external amplification, reducing component count and power. In a portable device, the AD7730 can be put into a low-power mode to extend battery life. The device's high resolution ensures accurate measurements even with small signals. The AD7730's self-calibration feature ensures consistent performance over time, which is important for field instruments. Its wide operating temperature range makes it suitable for outdoor use.
Recommended
Medical Devices
The AD7730BRUZ-REEL7 is used in medical devices such as patient scales and infusion pumps, where accurate weight and pressure measurements are critical. Its high resolution and low noise ensure precise readings, which is essential for patient safety. The device's low power consumption is beneficial for battery-operated medical equipment. The AD7730's serial interface allows easy integration with medical microcontrollers, and its self-calibration ensures reliable performance. In a patient scale, the AD7730 converts load cell signals with high accuracy, enabling weight monitoring. The device's small package is suitable for compact medical devices. The AD7730's wide operating temperature range covers clinical environments. Its compliance with RoHS makes it suitable for medical applications. The device's digital filter can be configured to reject interference from other medical equipment.
Recommended
Test and Measurement
The AD7730BRUZ-REEL7 is used in test and measurement equipment such as precision data loggers and calibration instruments. Its 24-bit resolution and programmable gain make it suitable for measuring small signals with high accuracy. The device's serial interface allows easy connection to data acquisition systems. The AD7730's self-calibration ensures accurate measurements over time, which is important for calibration equipment. In a data logger, the AD7730 converts sensor signals with high resolution, enabling precise recording. The device's low power consumption is beneficial for portable test equipment. The AD7730's digital filter can be configured to achieve high noise rejection, improving measurement accuracy. Its wide operating temperature range makes it suitable for laboratory and field use. The device's small package allows for compact test instruments.
Recommended
Recommended Products Summary
Engineering reference data for AD7730BRUZ-REEL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7730BRUZ | AD7730BRU-REEL7 | AD7730BRU-REEL | AD7730BRUZ-REEL | ADS1261 |
|---|---|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP | TSSOP-20 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit |
| Sampling Rate | 1.2 kSPS | 1.2 kSPS | 1.2 kSPS | 1.2 kSPS | 1.2 kSPS | 38 kSPS |
| Supply Voltage | 5V | 5V | 5V | 5V | 5V | 2.7V to 5.25V |
| Power Dissipation | 125 mW | 125 mW | 125 mW | 125 mW | 125 mW | 2.5 mW |
| Programmable Gain | Yes (up to 128) | Yes (up to 128) | Yes (up to 128) | Yes (up to 128) | Yes (up to 128) | Yes (up to 32) |
| RoHS | Compliant | Compliant | Non-compliant | Non-compliant | Compliant | Compliant |
Key Differentiators
- Specifically designed for bridge transducers (vs ADS1261)
- Pin-compatible with AD7730 family (vs ADS1261)
- Lower power dissipation than some alternatives (vs ADS1261)
Design Notes
The AD7730BRUZ-REEL7 operates from a single +5V supply. It is recommended to use separate analog and digital supply pins (AVDD and DVDD) with proper decoupling. Place 0.1uF and 10uF capacitors close to each supply pin to filter high-frequency noise. The device's power dissipation is 125 mW, so ensure adequate thermal management in high-temperature environments.
For optimal performance, use a ground plane and separate analog and digital ground areas. Connect the analog ground (GND) and digital ground (DGND) at a single point, preferably near the device. Keep analog input traces short and shielded to minimize noise pickup. The reference inputs (REFIN+ and REFIN-) should be driven by a low-impedance source, and bypass capacitors should be placed close to the reference pins.
A common mistake is not providing adequate filtering on the analog inputs. The AD7730's inputs are sensitive to high-frequency noise, which can degrade performance. Use a simple RC low-pass filter on each analog input to remove out-of-band noise. Also, ensure the reference voltage is stable and noise-free, as it directly affects conversion accuracy. Avoid routing digital signals near the analog inputs to prevent crosstalk.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
