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Analog Devices Inc. AD7766BRUZ-1
- Part No.:
- AD7766BRUZ-1
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7766BRUZ-1.pdf
- Description:
- IC ADC 24BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:809
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Product details
Overview
AD7766BRUZ-1 from Analog Devices is a 24-bit oversampled successive approximation register (SAR) analog-to-digital converter optimized for high-precision, low-power data acquisition. It delivers 109.5 dB dynamic range at 128 kSPS, −112 dB THD, ±6 ppm typical INL, and operates from a 2.5 V supply with 5 V reference in a 16-lead TSSOP package for vibration analysis and medical instrumentation.
For engineers reviewing the AD7766BRUZ-1 datasheet, AD7766BRUZ-1 pinout, AD7766BRUZ-1 application, or AD7766BRUZ-1 equivalent, key selection criteria include output data rate vs. dynamic range trade-off, on-chip linear-phase FIR filter latency, differential input structure with ±VREF+ full-scale range, and synchronization capability across multiple devices.
Technical Context
The AD7766BRUZ-1 implements an oversampled SAR architecture with a three-stage decimating FIR filter (decimation factor = 8), yielding 128 kSPS output data rate when driven by a 1.024 MHz main clock. Its fully differential analog input accepts ±5 V p-p signals referenced to VREF+/2, with 22 pF input capacitance and 1.4 kΩ effective series resistance.
Digital interface supports 1.8 V–3.6 V logic via VDRIVE, serial 24-bit two's complement output (MSB first), daisy-chain capability via SDI/SDO, and synchronized operation using the dual-function SYNC/PD pin. Filter settling time is 590 × tMCLK, and group delay is 37/ODR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24 bits, no missing codes - guarantees monotonicity and full code coverage for precision measurement systems. |
| Dynamic Range | 109.5 dB at 128 kSPS - enables detection of microvolt-level signal changes atop large dc/ac backgrounds. |
| THD | −112 dB - minimizes harmonic distortion in high-fidelity acquisition of clean sinusoidal or complex waveforms. |
| INL | ±6 ppm typical (±15 ppm max) - ensures sub-ppm linearity error critical for calibration-grade instrumentation. |
| Power Dissipation | 15 mW at 128 kSPS - balances performance and thermal load in space-constrained, battery-sensitive designs. |
| Reference Input | 5 V external reference - provides stable scaling for absolute voltage measurements independent of AVDD. |
| Operating Temp | −40°C to +105°C - supports deployment in industrial and automotive environments without derating. |
Pinout & Package
AD7766BRUZ-1 is housed in a 4.4 mm × 5 mm, 16-lead TSSOP package (RU-16) with exposed pad for thermal enhancement. Pin functions are validated per Analog Devices Rev. D datasheet Figure 6 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVDD (Pin 1) | Analog power supply | +2.5 V rail for analog core; must be decoupled locally to minimize noise coupling into conversion path. |
| VREF+ (Pin 2) | Reference voltage input | 5 V external reference source; defines full-scale range and directly impacts absolute accuracy and gain drift. |
| REFGND (Pin 3) | Reference ground | Dedicated ground return for VREF+; requires separate low-impedance connection to minimize common-mode error. |
| VIN+, VIN− (Pins 4, 5) | Differential analog inputs | Accept true differential signal up to ±5 V p-p; enable common-mode rejection of noise and interference. |
| SYNC/PD (Pin 7) | Sync & power-down control | Active-low input enabling multi-device synchronization or ultra-low-power shutdown (6 µA typical). |
| SDO (Pin 10) | Serial data output | 24-bit two's complement MSB-first stream; tri-state controlled by CS for shared bus configurations. |
| DRDY (Pin 12) | Data ready indicator | Falling edge signals valid conversion result; timing aligned to MCLK with 510 ns typical propagation delay. |
| MCLK (Pin 14) | Main sampling clock | 1.024 MHz input sets internal sampling frequency; ODR scales linearly with MCLK frequency. |
Key Features
| Feature | Design Value |
|---|---|
| Oversampled SAR architecture | Combines SAR speed and resolution with sigma-delta-like noise shaping-enables 109.5 dB DR without external filtering. |
| On-chip linear-phase FIR filter | Provides 100 dB stop-band attenuation and ±0.005 dB pass-band ripple-eliminates need for external anti-aliasing components. |
| Daisy-chain capability | SDI/SDO interface allows cascading multiple AD7766BRUZ-1 units on single SCLK/CS lines-reduces GPIO count in multi-channel systems. |
| Flexible logic interface | VDRIVE pin supports 1.8 V–3.6 V I/O voltage-enables direct interfacing with diverse host processors without level shifters. |
| Synchronization function | SYNC/PD pin coordinates sampling across multiple devices-ensures phase-aligned acquisition for coherent multi-sensor measurements. |
Applications
| Low-Power USB Data Acquisition | Vibration Analysis Systems |
|---|---|
Use Scenario: Portable USB-powered sensor node acquiring acceleration data from MEMS accelerometers in predictive maintenance equipment. IC Role / Device Role / Timing Role: Primary ADC digitizing differential accelerometer outputs with 128 kSPS throughput and 109.5 dB DR to resolve sub-g mechanical harmonics. Use Value: Enables battery-operated field instruments to capture wide-dynamic-range vibration spectra without external amplification or filtering stages. | Use Scenario: Multi-axis condition monitoring unit mounted on rotating machinery, capturing transient shock events and bearing fault frequencies. IC Role / Device Role / Timing Role: High-fidelity front-end ADC synchronizing sampling across three axes using SYNC/PD to preserve phase relationships between channels. Use Value: Delivers phase-coherent, low-distortion waveform capture essential for FFT-based fault signature analysis and envelope demodulation. |
| High-Precision Medical Instrumentation | Industrial Process Monitoring |
Use Scenario: Portable ECG/EEG amplifier module requiring galvanic isolation and high CMRR for biopotential signal conditioning. IC Role / Device Role / Timing Role: Isolated-side ADC converting differential bio-signal inputs with 24-bit NMC resolution and −112 dB THD to preserve diagnostic waveform fidelity. Use Value: Supports clinical-grade signal integrity by maintaining <15 nV/°C zero-drift and ±6 ppm INL across patient temperature variations. | Use Scenario: Distributed pressure/temperature transmitter in hazardous area, transmitting calibrated digital readings over RS-485 or wireless link. IC Role / Device Role / Timing Role: Signal conditioning ADC providing stable 24-bit measurements under wide ambient temperature swings (−40°C to +105°C). Use Value: Ensures long-term calibration stability with 0.4 ppm/°C gain drift and 15 nV/°C zero drift-reducing recalibration frequency in remote installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7766BRUZ | Same silicon, identical specs, but shipped in tape-and-reel (not tube); RoHS-compliant packaging variant. | No functional difference; suitable for automated SMT assembly where reel format required. | Select AD7766BRUZ for high-volume production with pick-and-place machines. |
| AD7767BRUZ | 18-bit resolution, 109.5 dB DR at 128 kSPS, 15 mW power, serial-only interface-no daisy-chain or SYNC/PD pins. | Lacks synchronization and multi-device coordination features; lower resolution limits use in metrology-grade applications. | Choose AD7767BRUZ only when 18-bit resolution suffices and system-level synchronization is handled externally. |
Compared with AD7766BRUZ-1, AD7766BRUZ offers identical electrical performance in a different packaging format, while AD7767BRUZ trades 6 bits of resolution and key system-level features (SYNC/PD, daisy-chain) for reduced cost and footprint-making it suitable only for less demanding measurement tasks.
Availability
AD7766BRUZ-1 is available at Aetrix Electronics and suitable for low-power USB data acquisition, vibration analysis, and high-precision medical instrumentation requiring stable component supply across design-in, prototyping, and volume production phases.
Supply support for AD7766BRUZ-1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The AD7766BRUZ-1 belongs to Analog Devices' precision data acquisition portfolio, designed specifically for applications demanding ultralow distortion, exceptional dc accuracy, and flexible synchronization in resource-constrained environments.
FAQ
What is the maximum output data rate of the AD7766BRUZ-1?
The AD7766BRUZ-1 achieves a maximum output data rate of 128 kSPS when configured with a 1.024 MHz main clock and decimation factor of 8. This ODR is fixed for the AD7766BRUZ-1 variant and cannot be increased beyond this value without violating specification limits. The AD7766BRUZ-1 datasheet confirms this rate in Table 2 and Section "Theory of Operation".
Does the AD7766BRUZ-1 require an external reference voltage?
Yes, the AD7766BRUZ-1 requires an external reference voltage applied to the VREF+ pin (Pin 2). The device supports 2.4 V to 5 V reference inputs, with 5 V being the nominal value specified for full performance. No internal reference is provided; accuracy and dynamic range depend directly on reference stability and noise performance.
Can multiple AD7766BRUZ-1 devices be synchronized?
Yes, the AD7766BRUZ-1 includes a dedicated SYNC/PD pin (Pin 7) that enables precise synchronization of sampling across multiple devices. Asserting this pin simultaneously initiates simultaneous conversion start across all connected AD7766BRUZ-1 units, ensuring phase-aligned data capture for multi-channel coherent systems.
What is the digital interface voltage range supported by the AD7766BRUZ-1?
The AD7766BRUZ-1 supports digital I/O voltages from 1.8 V to 3.6 V via the VDRIVE pin (Pin 9). This allows direct interfacing with a wide range of microcontrollers and FPGAs without level-shifting circuitry. Logic thresholds scale with VDRIVE, and VOL/VOH specifications are defined relative to this supply.
Is the AD7766BRUZ-1 pin-compatible with other members of the AD7766 family?
Yes, the AD7766BRUZ-1 shares identical pinout and package (16-lead TSSOP) with AD7766BRUZ and AD7766BRUZ-2. All variants use the same footprint, power supplies, reference, and digital interface signals. Functional differences (ODR, power, DR) are internal and do not affect PCB layout or interconnect design.
AD7766BRUZ-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 64k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.5V
- Voltage - Supply, Digital:
- 2.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7766BRUZ-1 FAQ
1.How can I place an order for AD7766BRUZ-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7766BRUZ-1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7766BRUZ-1 reliable?
The price and inventory of AD7766BRUZ-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7766BRUZ-1 is usually 5 days.
3.What payment methods are accepted for AD7766BRUZ-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7766BRUZ-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7766BRUZ-1?
AD7766BRUZ-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7766BRUZ-1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7766BRUZ-1?
For technical support, including AD7766BRUZ-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7766BRUZ-1 requirements.
6.How does Aetrix verify that AD7766BRUZ-1 is sourced from the original manufacturer or authorized distributors?
All AD7766BRUZ-1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7766BRUZ-1 meets industry standards.
7.What is the process for return or replacement of AD7766BRUZ-1?
All AD7766BRUZ-1 units undergo pre-shipment inspection (PSI). If there is an issue with AD7766BRUZ-1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7766BRUZ-1 part is unused and in its original packaging.
Return procedure for AD7766BRUZ-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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