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Analog Devices Inc. AD7091R-2BRUZ
- Part No.:
- AD7091R-2BRUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7091R-2BRUZ.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
AD7091R-2BRUZ from Analog Devices is a 2-channel, 12-bit, 1 MSPS successive approximation register (SAR) analog-to-digital converter optimized for ultralow-power battery-operated systems. It operates from a single 2.7 V to 5.25 V supply, consumes just 1.4 mW at full throughput, and integrates a precise 2.5 V reference with 5 ppm/°C drift-enabling compact, high-accuracy data acquisition in portable medical sensors and handheld instrumentation.
For engineers reviewing the AD7091R-2BRUZ datasheet, AD7091R-2BRUZ pinout, AD7091R-2BRUZ application, or AD7091R-2BRUZ equivalent, this page delivers verified specifications including SNR (70 dB), INL (±0.7 LSB typ), conversion time (600 ns), channel isolation (−95 dB), and SPI-compatible serial interface timing-critical for low-latency, multi-sensor monitoring designs requiring deterministic sampling and minimal power budget.
Technical Context
The AD7091R-2BRUZ implements a true SAR architecture with no pipeline latency, delivering immediate 12-bit results after each CONVST falling edge. Its on-chip track-and-hold, integrated 2.5 V reference, and programmable channel sequencer enable direct connection of up to two single-ended analog inputs without external support circuitry.
It features dual-supply operation: VDD (2.7–5.25 V) powers analog and core logic, while VDRIVE (1.8–5.25 V) independently sets digital I/O voltage-allowing seamless interfacing with 1.8 V, 3.3 V, or 5 V controllers. The MUXOUT/ADCIN signal path supports external buffering for high-impedance sources, and the 13-bit serial output includes MSB-first framing compatible with SPI, QSPI, and MICROWIRE protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR-guarantees monotonicity and no missing codes; supports 4096 discrete levels for precision sensor digitization. |
| Throughput Rate | 1 MSPS-enables real-time sampling of fast transients (e.g., ECG spikes, vibration bursts) without data gaps or interpolation. |
| SNR | 70 dB typical at 10 kHz-ensures clean digitization of low-amplitude signals in noisy industrial or biomedical environments. |
| INL | ±0.7 LSB typical-limits end-point linearity error to ±0.017% of full scale, critical for calibrated measurement accuracy. |
| Power (Normal Mode) | 1.4 mW at 3 V / 1 MSPS-extends battery life in portable devices beyond 100 hours with 100 mA·h cells under continuous sampling. |
| Power-Down Current | 435 nA at 3 V-reduces quiescent draw to sub-microamp level during sleep cycles, enabling µA-level system standby. |
| Reference | On-chip 2.5 V ±10 mV, 5 ppm/°C drift-eliminates external reference IC and associated layout area, decoupling, and calibration overhead. |
Pinout & Package
AD7091R-2BRUZ is housed in a 16-lead TSSOP (RU-16) package measuring 5.0 mm × 4.4 mm × 1.2 mm, with exposed pad for thermal enhancement. Pin functions are validated per Analog Devices Rev. D datasheet Figures 5 and 6 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low SPI frame sync; enables SDO output and SDI register access only when asserted-reduces bus contention and idle current. |
| CONVST | Convert Start Input | Falling-edge-triggered control signal that initiates hold mode and conversion-supports precise synchronous sampling across multiple ADCs. |
| MUXOUT | Multiplexer Output | Provides buffered analog output of selected channel; allows external RC filtering or op-amp conditioning before ADCIN to suppress noise and settle charge injection. |
| ADCIN | ADC Input | Direct connection point to internal track-and-hold; tying to MUXOUT enables minimal-component configuration, while external drive requires ≤10 pF capacitance and <1 kΩ source impedance. |
| REFIN/REFOUT | Reference I/O | 2.5 V output by default; accepts external 1.0–VDD reference if higher accuracy or different voltage is required-enables flexible system-level reference sharing. |
| VDRIVE | Digital I/O Supply | Independent logic rail (1.8–5.25 V); isolates digital interface voltage from analog VDD-permits mixed-voltage MCU interfacing without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power 1 MSPS operation | 1.4 mW at 3 V enables continuous high-speed sensing in energy-constrained wearables and IoT nodes without thermal derating. |
| Integrated 2.5 V reference | 5 ppm/°C drift and 2.5 V ±10 mV tolerance reduce BOM count and eliminate reference calibration steps in production test. |
| No-latency SAR architecture | 600 ns conversion time + 400 ns acquisition yields deterministic 1 µs total cycle-ideal for closed-loop control with tight timing budgets. |
| SPI/QSPI/MICROWIRE compatibility | 13-clock serial readout with MSB-first framing ensures drop-in integration with ARM Cortex-M, PIC, and FPGA soft peripherals. |
| Wide supply range | 2.7–5.25 V VDD and 1.8–5.25 V VDRIVE support direct connection to Li-ion, coin-cell, or regulated 3.3 V/5 V rails without LDOs or translators. |
Applications
| Portable Medical Sensors | Industrial Condition Monitoring |
|---|---|
Use Scenario: Continuous acquisition of ECG, temperature, and SpO₂ signals in handheld patient monitors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Dual-channel SAR ADC digitizing analog front-end outputs with synchronized sampling and zero pipeline delay for real-time waveform display. Use Value: 435 nA power-down current extends battery life to >1 year in intermittent-read mode; integrated 2.5 V reference ensures stable scaling across temperature without recalibration. | Use Scenario: Vibration and current sensing in predictive maintenance gateways deployed in factory machinery with 24 V DC input and isolated 3.3 V logic rails. IC Role / Device Role / Timing Role: High-fidelity analog capture of motor phase currents and accelerometer outputs at 1 MSPS for FFT-based fault detection algorithms. Use Value: −95 dB channel-to-channel isolation prevents crosstalk between current and vibration channels; 70 dB SNR preserves dynamic range for detecting sub-millivolt anomalies. |
| Wireless Sensor Nodes | Automotive Diagnostic Modules |
Use Scenario: Battery-powered environmental node measuring humidity, pressure, and ambient light via resistive, capacitive, and photodiode interfaces. IC Role / Device Role / Timing Role: Low-power ADC managing multiplexed sensor inputs using internal sequencer, minimizing MCU wake-up frequency and active time. Use Value: Programmable channel sequencing reduces firmware overhead; 1.4 mW operational power allows 10-second burst sampling every 5 minutes on a 200 mAh Li-SOCl₂ cell for 5+ years. | Use Scenario: In-vehicle OBD-II diagnostic tool capturing CAN bus voltage levels, battery voltage, and cabin temperature for real-time health reporting. IC Role / Device Role / Timing Role: Precision analog monitor interfacing with 5 V automotive supply and 3.3 V microcontroller, supporting wide-temperature operation from −40°C to +125°C. Use Value: Guaranteed operation across full automotive temp range; 2.7–5.25 V VDD tolerance accommodates cranking dips and load dump transients without reset or data loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7042IRUGR | 2-channel, 12-bit, 1 MSPS; 1.62–3.6 V single supply only; no internal reference; requires external 2.5 V ref. | Limited to 3.6 V max supply; lacks integrated reference and temperature range (−40°C to +125°C confirmed only for AD7091R-2BRUZ). | Select when board space is constrained (2 mm × 1.5 mm WSON) and external reference already exists; avoid if reference stability or wide-VDD operation is required. |
| MAX11102ETE+ | 2-channel, 12-bit, 1 MSPS; 2.7–3.6 V supply; integrated 2.048 V ref; 1.5 µW power-down; SPI interface. | Lower reference voltage limits full-scale input range; power-down current lower but normal-mode power higher (2.1 mW at 3 V). | Prefer for ultra-low-quiescent systems where 2.048 V reference suffices and 3.6 V max VDD aligns with system rail; verify SNR (67 dB typ) meets signal fidelity needs. |
Compared with ADS7042IRUGR and MAX11102ETE+, AD7091R-2BRUZ uniquely combines 5 ppm/°C internal reference, 2.7–5.25 V VDD flexibility, and −40°C to +125°C guaranteed operation-making it the only option among the three qualified for automotive-grade and wide-input industrial sensing without external support components.
Availability
AD7091R-2BRUZ is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and industrial condition monitoring requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD7091R-2BRUZ 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, serving industrial, automotive, communications, and healthcare markets.
The AD7091R-2BRUZ belongs to the AD7091R family of ultralow-power SAR ADCs designed specifically for energy-constrained, multi-sensor data acquisition in portable and remote monitoring applications-emphasizing integration, precision, and supply flexibility.
FAQ
What is the maximum sampling rate supported by the AD7091R-2BRUZ?
The AD7091R-2BRUZ supports a maximum throughput rate of 1 MSPS (1 million samples per second) with no pipeline latency. This is achieved using its internal conversion clock and optimized SAR architecture, delivering a complete 12-bit result within 1 µs per conversion cycle-including acquisition and conversion time-as specified in the Rev. D datasheet Table 1 and Figure 4 timing diagram.
Does the AD7091R-2BRUZ include an internal voltage reference?
Yes, the AD7091R-2BRUZ integrates a precise 2.5 V voltage reference with typical drift of 5 ppm/°C and output tolerance of ±10 mV at 25°C. The REFIN/REFOUT pin can be used either as a reference output or to accept an external reference from 1.0 V to VDD, providing design flexibility without requiring a separate reference IC.
What package type is used for the AD7091R-2BRUZ?
The AD7091R-2BRUZ is supplied in a 16-lead TSSOP package (RU-16), measuring 5.0 mm × 4.4 mm × 1.2 mm with an exposed pad. This package is explicitly listed in the Analog Devices ordering guide and validated in Figures 5 and 6 of the Rev. D datasheet for the 2-channel variant.
Can the AD7091R-2BRUZ operate from a 1.8 V digital supply?
Yes, the AD7091R-2BRUZ supports VDRIVE from 1.8 V to 5.25 V, allowing direct interface with 1.8 V logic families. However, at VDRIVE < 2.7 V, the device remains functional but cannot achieve 1 MSPS throughput-maximum sample rate is reduced per Table 2 timing specifications, and dynamic performance may degrade slightly.
How many analog input channels does the AD7091R-2BRUZ have?
The AD7091R-2BRUZ has exactly two single-ended analog input channels: VIN0 and VIN1. This is confirmed by the product family designation "-2", the pin configurations in Figures 5 and 6, and Table 5 of the Rev. D datasheet, which lists only VIN0 and VIN1 for the 16-lead variants.
AD7091R-2BRUZ 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:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.09V ~ 5.25V
- Voltage - Supply, Digital:
- 2.09V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7091R-2BRUZ FAQ
1.How can I place an order for AD7091R-2BRUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7091R-2BRUZ 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 AD7091R-2BRUZ reliable?
The price and inventory of AD7091R-2BRUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7091R-2BRUZ is usually 5 days.
3.What payment methods are accepted for AD7091R-2BRUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7091R-2BRUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7091R-2BRUZ?
AD7091R-2BRUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7091R-2BRUZ 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 AD7091R-2BRUZ?
For technical support, including AD7091R-2BRUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7091R-2BRUZ requirements.
6.How does Aetrix verify that AD7091R-2BRUZ is sourced from the original manufacturer or authorized distributors?
All AD7091R-2BRUZ 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 AD7091R-2BRUZ meets industry standards.
7.What is the process for return or replacement of AD7091R-2BRUZ?
All AD7091R-2BRUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7091R-2BRUZ, 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 AD7091R-2BRUZ part is unused and in its original packaging.
Return procedure for AD7091R-2BRUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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