AD7766BRUZ - 24-Bit Oversampled SAR ADC | Analog Devices
MPN: AD7766BRUZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5455 | $18.55 |
| 10 | $13.3939 | $133.94 |
| 100 | $11.8485 | $1,184.85 |
| 500 | $11.3333 | $5,666.65 |
| 1,000 | $10.8182 | $10,818.20 |
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
π Reference alternative (not in catalog)
AD7766BRUZ-2
π Reference alternative (not in catalog)
ADS1271
π Reference alternative (not in catalog)
MAX11046
π Reference alternative (not in catalog)
LTC2380-24
π Reference alternative (not in catalog)
AD7766BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Inputs | 1 |
| Input Type | Single-Ended |
| Architecture | SAR |
| Sample Rate | 128 kSPS |
| Dynamic Range | 109.5 dB |
| THD | -112 dB |
| Power Consumption | 8.5 mW |
| Supply Voltage | 2.5 V |
| Reference Voltage | 5 V |
| Package | 16-TSSOP |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +105C |
| Daisy-Chain Support | Yes (SDI pin) |
| RoHS Status | Compliant |
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 | SCLK β Serial clock input |
| Pin 6 | SDI β Serial data input for daisy-chaining |
| Pin 7 | SDO β Serial data output |
| Pin 8 | CS β Chip select (active low) |
| Pin 9 | SYNC β Synchronization input |
| Pin 10 | PDWN β Power-down control |
| Pin 11 | GND β Ground |
| Pin 12 | VDRIVE β Logic supply voltage |
| Pin 13 | GND β Ground |
| Pin 14 | GND β Ground |
| Pin 15 | GND β Ground |
| Pin 16 | GND β Ground |
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 Systems, Medical Instrumentation, Industrial Process Control, Vibration Analysis, Portable Instrumentation, Audio Test and Measurement.
Precision Data Acquisition Systems
The AD7766BRUZ is ideal for precision data acquisition systems due to its 24-bit resolution and 109.5 dB dynamic range. It accurately digitizes small signals in the presence of noise, making it suitable for high-accuracy measurement. Its low power consumption of 8.5 mW enables battery-powered operation, and the daisy-chain capability allows easy expansion to multiple channels. The oversampled SAR architecture provides excellent AC and DC accuracy, ensuring reliable data capture in industrial and laboratory environments.
Recommended
Medical Instrumentation
In medical instrumentation, the AD7766BRUZ provides high-resolution conversion for signals such as ECG, EEG, and blood pressure monitoring. Its 24-bit resolution and low noise ensure accurate detection of physiological signals. The low power consumption is critical for portable and wearable devices, extending battery life. The small 16-TSSOP package fits compact designs, and the daisy-chain feature supports multi-channel patient monitoring systems. The device's high dynamic range preserves signal integrity in noisy clinical environments.
Recommended
Industrial Process Control
The AD7766BRUZ is well-suited for industrial process control, where precise monitoring of temperature, pressure, and flow is essential. Its 24-bit resolution and 109.5 dB dynamic range allow accurate measurement of process variables over a wide range. The device's low power consumption reduces heat generation in control cabinets, and its robust performance ensures reliable operation in harsh industrial environments. The daisy-chain capability enables efficient multi-channel data acquisition, reducing system complexity and cost.
Recommended
Vibration Analysis
For vibration analysis, the AD7766BRUZ offers the high dynamic range and low noise required to detect subtle vibrations in machinery. Its 24-bit resolution captures fine details in vibration signatures, enabling predictive maintenance. The 128 kSPS sample rate is sufficient for many vibration monitoring applications, and the low power consumption allows deployment in remote sensors. The device's oversampled SAR architecture provides excellent frequency response, making it ideal for spectral analysis in industrial condition monitoring.
Recommended
Portable Instrumentation
The AD7766BRUZ is perfect for portable instrumentation due to its ultra-low power consumption of 8.5 mW. This enables long battery life in handheld devices such as multimeters, data loggers, and portable analyzers. The 24-bit resolution ensures high measurement accuracy, while the small 16-TSSOP package saves board space. The device's wide operating temperature range and robust design make it suitable for field use. The daisy-chain feature allows expansion for multi-channel portable systems without significant power penalty.
Recommended
Audio Test and Measurement
In audio test and measurement, the AD7766BRUZ provides high-resolution conversion for analyzing audio signals with low distortion. Its 24-bit resolution and -112 dB THD ensure accurate measurement of audio equipment performance. The 128 kSPS sample rate covers the full audio bandwidth with margin, and the low power consumption is beneficial for portable audio analyzers. The device's high dynamic range allows measurement of quiet signals in the presence of loud ones, making it ideal for audio quality assessment.
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-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-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 | 1.5 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 | 15 mW |
| THD | -112 dB | -112 dB | -112 dB | -108 dB | -90 dB | -110 dB |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 5 V | 5 V | 5 V |
Key Differentiators
- Ultra-low power consumption of 8.5 mW (vs ADS1271)
- Higher dynamic range than ADS1271 (vs ADS1271)
- Daisy-chain capability (vs MAX11046)
Design Notes
Ensure clean power supply for the AD7766BRUZ. Use a low-noise LDO regulator to provide 2.5 V to the VDD pin and a precision reference for the 5 V VREF. Decouple each supply pin with 0.1 uF and 10 uF capacitors placed close to the device. A noisy supply can degrade the dynamic range and THD performance.
For optimal performance, use a solid ground plane and minimize trace lengths for analog input and reference signals. Keep digital signals away from analog input traces to reduce coupling. Use a star-ground topology to avoid ground loops. The 16-TSSOP package has exposed pad for thermal relief; connect it to ground plane.
Avoid exceeding the absolute maximum ratings for supply and reference voltages. Ensure the input signal is within the specified common-mode range to prevent clipping. Properly terminate unused pins, such as SDI, to avoid floating inputs. Use a low-jitter clock for SCLK to maintain SNR.
Compliance Information
RoHS compliance confirmed by Analog Devices. Other compliance data not specified in provided sources.
