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Analog Devices Inc. AD7766BRUZ-RL7
- Part No.:
- AD7766BRUZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7766BRUZ-RL7.pdf
- Description:
- IC ADC 24BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,045
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Product details
Overview
AD7766BRUZ-RL7 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, consumes 15 mW, features ±6 ppm typical INL, and operates with 2.5 V analog/digital supplies and 5 V reference in a 16-lead TSSOP package-ideal for USB/PCI-based instrumentation and medical signal capture.
For engineers reviewing the AD7766BRUZ-RL7 datasheet, AD7766BRUZ-RL7 pinout, AD7766BRUZ-RL7 application, or AD7766BRUZ-RL7 equivalent, key selection criteria include verified 128 kSPS output data rate, confirmed 109.5 dB dynamic range at full speed, validated 24-bit no-missing-codes performance, and documented TSSOP-16 pin compatibility with daisy-chain and synchronization support.
Technical Context
The AD7766BRUZ-RL7 implements an oversampled SAR architecture with on-chip linear-phase FIR filtering, decimating by 8 to achieve 128 kSPS output from a 1.024 MHz main clock. Its fully differential analog input structure rejects common-mode noise while supporting ±VREF+ differential input voltage range referenced to 5 V.
It integrates SYNC/PD for multi-device synchronization or power-down control, SDI/SDO for daisy-chain serial interface, and flexible logic-level operation via VDRIVE (1.8 V–3.6 V), enabling direct interfacing with microcontrollers and FPGAs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit, no missing codes-guarantees monotonicity and full-scale fidelity for precision measurement systems. |
| Output Data Rate | 128 kSPS-enables real-time capture of signals up to ~64 kHz bandwidth with oversampling gain. |
| Dynamic Range | 109.5 dB (typical, shorted inputs)-supports detection of µV-level signals atop mV–V dc offsets in vibration or biopotential monitoring. |
| INL Error | ±6 ppm (typical), ±15 ppm (max)-translates to <±0.25 LSB error at 24-bit scale, critical for calibration-grade instrumentation. |
| Power Consumption | 15 mW at 128 kSPS-balances performance and thermal budget in space-constrained, battery-assisted DAQ modules. |
| Reference Input | 5 V external reference (2.4 V–5 V range)-decouples accuracy from supply rails and enables stable ratiometric or absolute measurements. |
| Operating Temp | −40°C to +105°C-validated for industrial and automotive-adjacent embedded sensing environments. |
Pinout & Package
AD7766BRUZ-RL7 is housed in a 4.4 mm × 5 mm, 16-lead TSSOP package (RoHS-compliant, lead-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AVDD) | Analog power supply | +2.5 V analog rail; must be independently decoupled to minimize noise coupling into SAR core. |
| 2 (VREF+) | Reference voltage input | 5 V external reference source; sets full-scale range and directly determines LSB size (≈0.3 µV/LSB). |
| 4 (VIN+), 5 (VIN−) | Differential analog inputs | Accept true differential signals up to ±5 V p-p; reject common-mode interference up to 110 dB at 50 Hz. |
| 7 (SYNC/PD) | Sync/power-down control | Active-low input: synchronizes sampling across multiple AD7766BRUZ-RL7 devices or enters ultra-low-power mode (<6 µA). |
| 10 (SDO) | Serial data output | 24-bit twos-complement MSB-first stream; compatible with SPI-compatible controllers without mode configuration. |
| 12 (DRDY) | Data ready indicator | Falling edge signals valid conversion result available; enables interrupt-driven readout with deterministic latency (510 ns typ). |
| 13 (SCLK) | Serial clock input | Master-controlled clock (up to 1/t8 min period); timing defines data access window and supports variable interface speeds. |
| 14 (MCLK) | Main sampling clock | 1.024 MHz input sets base sampling frequency; ODR scales linearly with MCLK, enabling programmable trade-off between speed and noise. |
| 15 (SDI) | Daisy-chain input | Enables cascaded readout of multiple converters on shared SDO line-reduces GPIO count in multi-channel systems. |
| 16 (CS) | Chip select | Active-low enable for SDO; allows multiplexing of multiple AD7766BRUZ-RL7 devices on same serial bus without external logic. |
Key Features
| Feature | Design Value |
|---|---|
| Oversampled SAR architecture | Combines SAR speed and resolution with sigma-delta-like noise shaping-eliminates need for external antialiasing filters up to Nyquist. |
| On-chip linear-phase FIR filter | Provides ±0.005 dB pass-band ripple and 100 dB stop-band attenuation-preserves signal integrity in time-domain analysis (e.g., transient capture). |
| Daisy-chain capability | Reduces interconnect complexity in multi-ADC systems: one SDO line serves up to N devices with minimal PCB routing overhead. |
| Synchronization across devices | Ensures phase-aligned sampling across distributed sensor nodes-critical for coherent beamforming or multi-axis vibration analysis. |
| Flexible logic interface (VDRIVE) | Supports 1.8 V–3.6 V I/O voltages-enables direct connection to modern low-voltage MCUs/FPGAs without level shifters or additional power domains. |
Applications
| Vibration Analysis System | Portable Medical ECG Monitor |
|---|---|
|
Use Scenario: Capturing high-fidelity accelerometer waveforms from rotating machinery for bearing fault detection. IC Role / Device Role / Timing Role: Primary ADC digitizing differential piezoelectric sensor outputs with synchronized multi-channel sampling. Use Value: 109.5 dB dynamic range resolves sub-µg mechanical noise against large dc bias; 128 kSPS captures harmonics up to 64 kHz for envelope analysis. |
Use Scenario: Low-power, battery-operated ECG front-end acquiring microvolt-level cardiac potentials. IC Role / Device Role / Timing Role: High-accuracy, low-drift ADC converting differential electrode signals with integrated reference buffering. Use Value: ±6 ppm INL and 15 nV/°C zero-drift ensure stable baseline over temperature; 15 mW enables >24-hour runtime on coin-cell batteries. |
| USB-Based Precision DAQ Module | Industrial Process Monitoring Node |
|
Use Scenario: Compact benchtop data logger connecting via USB to PC for lab-grade sensor characterization. IC Role / Device Role / Timing Role: Core ADC interfacing to USB microcontroller via SPI-compatible serial interface with DRDY handshaking. Use Value: Daisy-chain support allows 4–8 channels per module; 24-bit NMC resolution eliminates calibration gaps across full temperature range. |
Use Scenario: DIN-rail mounted controller acquiring thermocouple, strain gauge, and pressure transducer signals in factory automation. IC Role / Device Role / Timing Role: Isolated analog input conditioner feeding differential ADC with robust ESD protection and wide temp operation. Use Value: −40°C to +105°C rating ensures reliability in uncontrolled enclosures; 110 dB CMRR suppresses 50/60 Hz mains interference in noisy plant environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, low-power SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7767BRUZ | 18-bit resolution, 128 kSPS, 109.5 dB DR, serial interface only-no daisy-chain or SYNC/PD pins. | Lacks multi-device synchronization and daisy-chain capability; lower resolution limits use in metrology-grade applications. | Select AD7767BRUZ only when 18-bit resolution suffices and system-level synchronization is handled externally. |
| AD7765BRUZ | 24-bit, 156 kSPS, 112 dB DR at 156 kSPS, requires external op-amp buffer and reference buffer-not integrated. | Higher speed but demands more external components; lacks on-chip FIR filter and has no daisy-chain support. | Choose AD7765BRUZ when maximum throughput (>128 kSPS) is required and board area permits discrete signal conditioning. |
Compared with AD7766BRUZ-RL7, AD7767BRUZ trades resolution and synchronization for reduced cost and footprint, while AD7765BRUZ increases speed at the expense of design complexity and missing integrated features like daisy-chain and on-chip filtering.
Availability
AD7766BRUZ-RL7 is available at Aetrix Electronics and suitable for precision instrumentation, portable medical devices, and industrial vibration monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7766BRUZ-RL7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets since 1965.
The AD7766BRUZ-RL7 belongs to Analog Devices' precision data acquisition portfolio, designed specifically for ultralow-power, high-dynamic-range measurement systems where dc accuracy, ac performance, and integration reduce system-level design burden.
FAQ
What is the maximum output data rate supported by the AD7766BRUZ-RL7?
The AD7766BRUZ-RL7 supports a maximum output data rate of 128 kSPS when configured with decimation-by-8 and driven by the nominal 1.024 MHz main clock. This ODR is fixed for the AD7766 variant-unlike AD7766-1 (64 kSPS) or AD7766-2 (32 kSPS)-and scales linearly with MCLK frequency. The AD7766BRUZ-RL7 achieves this rate while maintaining 109.5 dB dynamic range and 15 mW power consumption.
Does the AD7766BRUZ-RL7 require an external reference voltage?
Yes, the AD7766BRUZ-RL7 requires an external reference voltage applied to the VREF+ pin. The datasheet specifies a 5 V nominal reference, with acceptable range from 2.4 V to 5 V (or up to 2 × AVDD). No internal reference is provided; the reference directly defines the full-scale input range and LSB size. Using a stable, low-noise 5 V reference is essential to achieve the specified 109.5 dB dynamic range and ±6 ppm INL performance of the AD7766BRUZ-RL7.
Can multiple AD7766BRUZ-RL7 devices be synchronized for simultaneous sampling?
Yes, the AD7766BRUZ-RL7 includes a dedicated SYNC/PD pin that enables hardware synchronization across multiple devices. Asserting a common active-low pulse on SYNC/PD aligns the internal sampling clocks and filter reset points, ensuring deterministic phase coherence. This capability is explicitly validated in the datasheet timing diagrams and is fundamental to applications like multi-axis vibration analysis or phased-array sensor systems using the AD7766BRUZ-RL7.
What package type and pin count does the AD7766BRUZ-RL7 use?
The AD7766BRUZ-RL7 uses a 16-lead TSSOP package measuring 4.4 mm × 5 mm. This surface-mount package is RoHS-compliant and lead-free. Pin functions-including AVDD, VREF+, VIN+, VIN−, SYNC/PD, SDO, DRDY, SCLK, MCLK, SDI, and CS-are fully documented in the official Analog Devices datasheet Rev. D, and match the pinout of all AD7766 family variants. The TSSOP-16 footprint enables high-density layout while supporting manual rework and automated assembly.
Is daisy-chain operation supported on the AD7766BRUZ-RL7?
Yes, the AD7766BRUZ-RL7 supports daisy-chain operation via its SDI (serial data input) and SDO (serial data output) pins. In daisy-chain mode, the SDO of one AD7766BRUZ-RL7 connects to the SDI of the next, allowing sequential readout of conversion results from multiple devices using a single serial interface and DRDY signal. This feature reduces GPIO requirements and simplifies firmware in multi-channel systems-confirmed in the "Daisy Chaining" section of the AD7766BRUZ-RL7 datasheet.
AD7766BRUZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 128k
- 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-RL7 FAQ
1.How can I place an order for AD7766BRUZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7766BRUZ-RL7 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-RL7 reliable?
The price and inventory of AD7766BRUZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7766BRUZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7766BRUZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7766BRUZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7766BRUZ-RL7?
AD7766BRUZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7766BRUZ-RL7 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-RL7?
For technical support, including AD7766BRUZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7766BRUZ-RL7 requirements.
6.How does Aetrix verify that AD7766BRUZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7766BRUZ-RL7 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-RL7 meets industry standards.
7.What is the process for return or replacement of AD7766BRUZ-RL7?
All AD7766BRUZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7766BRUZ-RL7, 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-RL7 part is unused and in its original packaging.
Return procedure for AD7766BRUZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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