AD7766BRUZ - 24-Bit Oversampled SAR ADC | Analog Devices
MPN: AD7766BRUZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.39 | $8.39 |
| 10 | $7.55 | $75.50 |
| 100 | $6.71 | $671.00 |
| 500 | $5.87 | $2,935.00 |
| 1,000 | $5.03 | $5,030.00 |
Drop-in alternatives for AD7766BRUZ 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:
AD7766BRUZ-1
β Drop-Inπ Reference alternative (not in catalog)
AD7766BRUZ-2
β Drop-Inπ Reference alternative (not in catalog)
ADS1271
β Drop-Inπ Reference alternative (not in catalog)
MAX11046
β Drop-Inπ Reference alternative (not in catalog)
LTC2380-24
β Drop-Inπ Reference alternative (not in catalog)
AD7766BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 bit |
| Number of Inputs | 1 |
| Input Type | Single-ended |
| Architecture | Oversampled SAR |
| Sample Rate | 128 kSPS |
| Dynamic Range | 109.5 dB |
| Total Harmonic Distortion (THD) | -112 dB |
| Power Consumption | 8.5 mW |
| Supply Voltage | 2.5 V |
| Reference Voltage | 5 V |
| Package | 16-lead TSSOP |
| Operating Temperature Range | -40Β°C to +105Β°C |
| Daisy-Chain Support | Yes (SDI pin) |
| RoHS Compliant | Yes |
| Mounting Type | Surface Mount |
AD7766BRUZ Pin Configuration
| Pin 1 | VREF β Reference voltage input (5 V) |
| Pin 2 | VIN β Analog input |
| Pin 3 | GND β Ground |
| Pin 4 | VDD β Power supply (2.5 V) |
| Pin 5 | SDI β Serial data input for daisy-chaining |
| Pin 6 | SCLK β Serial clock input |
| Pin 7 | CS β Chip select (active low) |
| Pin 8 | DOUT β Serial data output |
| Pin 9 | DRDY β Data ready output |
| Pin 10 | SYNC β Synchronization input |
| Pin 11 | GND β Ground |
| Pin 12 | VDD β Power supply (2.5 V) |
| Pin 13 | NC β No connect |
| Pin 14 | NC β No connect |
| Pin 15 | NC β No connect |
| Pin 16 | 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
AD7766BRUZ is suitable for 6 applications: Precision Data Acquisition, Medical Instrumentation, Industrial Process Control, Vibration Analysis, Audio Test Equipment, Portable Instrumentation.
Precision Data Acquisition
The AD7766BRUZ is ideal for precision data acquisition systems due to its 24-bit resolution and 109.5 dB dynamic range. It accurately digitizes low-level signals from sensors, ensuring high fidelity in measurement. The low power consumption of 8.5 mW makes it suitable for portable data loggers. Its oversampled SAR architecture provides excellent AC and DC accuracy, which is critical for industrial and laboratory instrumentation. The device's single-ended input simplifies the analog front-end, reducing component count and design complexity.
Recommended
Medical Instrumentation
In medical devices such as patient monitors and diagnostic equipment, the AD7766BRUZ provides high-resolution conversion of physiological signals. Its low noise and high dynamic range ensure accurate detection of small signal variations, which is essential for reliable diagnostics. The device's low power consumption extends battery life in portable medical devices. The daisy-chain capability allows for multi-channel ECG or EEG systems without additional hardware. The 16-lead TSSOP package is compact, fitting into space-constrained medical devices.
Recommended
Industrial Process Control
The AD7766BRUZ is well-suited for industrial process control systems that require precise monitoring of temperature, pressure, and flow. Its 24-bit resolution and 109.5 dB dynamic range enable accurate measurement of process variables, improving system efficiency and safety. The device's low power consumption reduces heat generation in control cabinets. The oversampled SAR architecture provides fast settling times, allowing for real-time control loops. The device's robust design ensures reliable operation in harsh industrial environments.
Recommended
Vibration Analysis
For vibration monitoring and analysis, the AD7766BRUZ offers high-resolution conversion of accelerometer signals. Its 109.5 dB dynamic range captures both small and large vibrations, enabling early detection of mechanical faults. The low power consumption allows for battery-powered wireless vibration sensors. The device's high sample rate of 128 kSPS is sufficient for most vibration frequencies. The daisy-chain feature enables multi-axis vibration monitoring with a single ADC, simplifying system design.
Recommended
Audio Test Equipment
The AD7766BRUZ is used in audio test equipment for high-resolution analysis of audio signals. Its low THD of -112 dB ensures accurate measurement of harmonic distortion in audio devices. The 24-bit resolution provides a wide dynamic range, capturing both quiet and loud passages without clipping. The device's low power consumption is beneficial for portable audio analyzers. The oversampled SAR architecture offers excellent linearity, making it suitable for professional audio testing.
Recommended
Portable Instrumentation
The AD7766BRUZ is ideal for portable instrumentation such as handheld multimeters and data loggers. Its low power consumption of 8.5 mW extends battery life, making it suitable for field use. The 24-bit resolution provides high accuracy for measurement applications. The compact 16-lead TSSOP package saves PCB space, enabling smaller device designs. The device's single-ended input simplifies the analog front-end, reducing component count and cost.
Recommended
Recommended Products Summary
Engineering reference data for AD7766BRUZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7766BRUZ-1 | AD7766BRUZ-2 | ADS1271 | MAX11046 | LTC2380-24 |
|---|---|---|---|---|---|---|
| Package | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Maxim Integrated | Analog Devices |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit | 16 bit | 24 bit |
| Sample Rate | 128 kSPS | 64 kSPS | 32 kSPS | 105 kSPS | 250 kSPS | 2 MSPS |
| Dynamic Range | 109.5 dB | 112.5 dB | 115.5 dB | 109 dB | 93 dB | 104 dB |
| Power Consumption | 8.5 mW | 10.5 mW | 8.5 mW | 70 mW | 50 mW | 25 mW |
| THD | -112 dB | -112 dB | -112 dB | -110 dB | -95 dB | -110 dB |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 5 V | 5 V | 5 V |
Key Differentiators
- Lowest power consumption in the AD7766 family (vs AD7766BRUZ-1)
- Highest sample rate in the AD7766 family (vs AD7766BRUZ-2)
- Lower power than cross-brand alternatives (vs ADS1271)
Design Notes
The AD7766BRUZ requires a clean 2.5 V supply and a 5 V reference. Use low-dropout regulators with low noise and adequate decoupling capacitors (e.g., 10 Β΅F and 0.1 Β΅F) close to the VDD and VREF pins. The reference voltage directly affects the dynamic range, so a precision reference such as the ADR4550 is recommended.
For optimal performance, place the AD7766BRUZ on a solid ground plane and minimize trace lengths for the analog input and reference. Use separate analog and digital ground planes connected at a single point to avoid noise coupling. Keep the serial interface lines (SCLK, DOUT, etc.) away from the analog input to prevent digital noise from degrading the SNR.
Ensure the input signal is within the specified common-mode range and does not exceed the supply rails. Use an anti-aliasing filter on the analog input to prevent out-of-band noise from folding into the passband. Also, verify that the reference voltage is stable and free of ripple, as any noise on VREF will directly affect the conversion accuracy.
Compliance Information
RoHS compliance indicated in product documentation. Other compliance details not specified in the provided data.
