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Analog Devices Inc. AD7091R-2BRUZ-RL7
- Part No.:
- AD7091R-2BRUZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7091R-2BRUZ-RL7.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
AD7091R-2BRUZ-RL7 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 1.4 mW at full throughput, integrates a 2.5 V reference with 5 ppm/°C drift, and delivers 70 dB SNR at 10 kHz - enabling high-fidelity sensor digitization in space-constrained industrial and medical instrumentation.
For engineers reviewing the AD7091R-2BRUZ-RL7 datasheet, AD7091R-2BRUZ-RL7 pinout, AD7091R-2BRUZ-RL7 application, or AD7091R-2BRUZ-RL7 equivalent, key selection considerations include its dual-channel single-ended architecture, SPI-compatible serial interface with CONVST-triggered conversion, on-chip channel sequencer, MUXOUT/ADCIN signal conditioning flexibility, and −40°C to +125°C extended temperature operation.
Technical Context
The AD7091R-2BRUZ-RL7 implements a true SAR architecture with no pipeline latency, achieving 1 MSPS throughput via internal conversion clock and external CONVST edge triggering. Its integrated 2.5 V reference supports ±0.7 LSB INL and 70 dB SNR, while the MUXOUT/ADCIN dual-pin configuration enables external buffer placement between multiplexer output and ADC input for improved settling.
Power management is implemented through dedicated Normal and Power-Down modes: 570 µA IDD at 1 MSPS (VDD = 5.25 V), dropping to 550 nA in Power-Down mode. The device uses separate VDD (2.7–5.25 V) and VDRIVE (1.8–5.25 V) supplies, allowing logic-level independence and low-voltage microcontroller interfacing without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR - delivers 4096 discrete digital codes with guaranteed no missing codes. |
| Throughput Rate | 1 MSPS - full conversion cycle every 1000 ns, enabling real-time sampling of fast transients. |
| SNR | 70 dB typical at 10 kHz - supports >11.3 effective bits for precision sensor signal capture. |
| INL | ±0.7 LSB typical - ensures monotonicity and <0.017% full-scale linearity error in closed-loop control. |
| Reference | On-chip 2.5 V ±10 mV, 5 ppm/°C drift - eliminates external reference component and reduces BOM count. |
| Supply Range | VDD: 2.7–5.25 V; VDRIVE: 1.8–5.25 V - enables direct interfacing with 1.8 V, 3.3 V, or 5 V controllers. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and portable medical use. |
Pinout & Package
AD7091R-2BRUZ-RL7 is housed in a 16-lead, 4 mm × 4 mm LFCSP package with exposed pad (EPAD), optimized for thermal performance and PCB area efficiency in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low SPI frame sync; enables SDO output and accepts SDI data only when asserted. |
| CONVST | Convert Start Input | Falling-edge triggered; initiates hold mode and conversion, decoupling timing from SCLK. |
| MUXOUT / ADCIN | Configurable Signal Path | MUXOUT outputs multiplexer result; ADCIN feeds track-and-hold - allows external RC filter/buffer insertion. |
| REFIN/REFOUT | Reference I/O | Supplies or sinks 2.5 V reference; supports internal use or external overdrive (1.0 V to VDD). |
| VIN0, VIN1 | Analog Inputs | Single-ended channels with 0–VREF range; support up to 1.5 MHz full-power bandwidth. |
| VDD, VDRIVE, GND | Independent Supplies | VDD powers analog core; VDRIVE sets digital I/O voltage - enables mixed-voltage system integration. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow power at 1 MSPS | 1.4 mW @ 3 V - extends battery life in portable diagnostics and wireless sensors beyond 10 years at 100 SPS. |
| Integrated 2.5 V reference | 5 ppm/°C drift - eliminates calibration drift in field-deployed equipment operating across temperature extremes. |
| Flexible signal routing | MUXOUT/ADCIN dual-pin architecture - permits external op-amp buffering without additional PCB layers or components. |
| SPI/QSPI/MICROWIRE interface | 13-clock readout, MSB-first, burst-mode compatible - simplifies firmware integration with ARM Cortex-M and RISC-V MCUs. |
| Extended temperature grade | −40°C to +125°C operation - meets AEC-Q100 Grade 1 requirements for automotive subsystems and industrial motor drives. |
Applications
| Portable Medical Sensors | Industrial Process Monitoring |
|---|---|
Use Scenario: Continuous glucose monitoring patch with dual electrochemical sensor inputs and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Dual-channel SAR ADC digitizing analog sensor outputs with synchronized CONVST triggering and SPI streaming to MCU. Use Value: 1.4 mW power enables 3-year coin-cell operation; 70 dB SNR preserves signal integrity for sub-mV physiological detection. | Use Scenario: DIN-rail mounted temperature/pressure transmitter with isolated 4–20 mA loop and local HART interface. IC Role / Device Role / Timing Role: Precision front-end ADC acquiring two sensor channels with on-chip reference and robust ESD tolerance (1.5 kV HBM). Use Value: −40°C to +125°C rating ensures reliability in uncontrolled cabinet environments; ±0.7 LSB INL maintains <0.1% measurement accuracy over lifetime. |
| Wireless IoT End Nodes | Automotive Cabin Sensing |
Use Scenario: Battery-powered air quality node measuring PM2.5, VOC, and CO₂ using electrochemical and NDIR sensors. IC Role / Device Role / Timing Role: Low-power ADC managing multiple analog inputs via internal sequencer, entering 550 nA sleep between samples. Use Value: Programmable power-down mode cuts quiescent current by 99.9% vs. active mode - critical for multi-year deployments. | Use Scenario: Occupancy and cabin air quality module behind dashboard, interfacing with HVAC controller via CAN. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing thermistor and humidity sensor outputs in harsh automotive electrical environment. Use Value: Separate VDRIVE supply allows direct 3.3 V MCU interface while VDD runs at 5 V for optimal analog performance and PSRR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7028IRTER | 8-channel, 12-bit, 1 MSPS; 1.8 V–5.5 V supply; no internal reference; requires external REF. | Higher channel count but lacks integrated 2.5 V reference - increases BOM cost and layout complexity. | Select when >2 channels are needed and reference sourcing is already centralized. |
| AD7476ARTZ-REEL7 | Single-channel, 12-bit, 1 MSPS; 2.35–5.25 V supply; no sequencer; no internal reference; smaller 6-lead SOT-23. | Lower integration and no channel sequencing - suitable only for point-measurement, not multiplexed sensing. | Select for ultra-small footprint and lowest cost where dual-channel capability is unnecessary. |
Compared with ADS7028IRTER and AD7476ARTZ-REEL7, the AD7091R-2BRUZ-RL7 uniquely balances dual-channel operation, integrated reference, and ultralow 1.4 mW active power - making it optimal for space- and energy-constrained two-sensor systems where BOM reduction and thermal efficiency are critical.
Availability
AD7091R-2BRUZ-RL7 is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7091R-2BRUZ-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, 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-RL7 belongs to the AD7091R family of ultralow-power SAR ADCs designed specifically for energy-sensitive, multichannel data acquisition in portable and remote sensing applications.
FAQ
What is the maximum sampling rate of the AD7091R-2BRUZ-RL7?
The AD7091R-2BRUZ-RL7 achieves a maximum throughput rate of 1 MSPS (1 million samples per second) with no pipeline latency. This is confirmed in the datasheet's Specifications table (Rev. D, p.3), where "Throughput Rate" is specified as 1 MSPS under normal mode operation with fSAMPLE = 1 MSPS and VDD ≥ 2.7 V. Conversion time is fixed at 600 ns, and the minimum cycle time is 1000 ns.
Does the AD7091R-2BRUZ-RL7 include an internal voltage reference?
Yes, the AD7091R-2BRUZ-RL7 integrates a precise 2.5 V internal reference with typical drift of 5 ppm/°C and output voltage of 2.49 V to 2.51 V at 25°C. As stated in Table 1 (p.3), REFOUT is specified as 2.5 V ±10 mV, and the pin REFIN/REFOUT serves dual function - either sourcing the internal reference or accepting an external reference from 1.0 V to VDD.
What package type is used for the AD7091R-2BRUZ-RL7?
The AD7091R-2BRUZ-RL7 uses a 16-lead, 4 mm × 4 mm LFCSP (Lead Frame Chip Scale Package) with exposed pad (EPAD), as confirmed in the Ordering Guide (p.38) and Pin Configurations section (Figure 6, p.8). The "BRUZ" suffix in the part number explicitly denotes the 16-lead LFCSP package variant.
Can the AD7091R-2BRUZ-RL7 operate with different analog and digital supply voltages?
Yes, the AD7091R-2BRUZ-RL7 supports independent analog and digital supplies: VDD (2.7–5.25 V) powers the analog core and reference, while VDRIVE (1.8–5.25 V) sets the logic I/O voltage level. This separation allows interfacing with 1.8 V or 3.3 V microcontrollers without level shifters, as detailed in Table 1 (p.4) and Pin Function Descriptions (p.8).
Is the AD7091R-2BRUZ-RL7 suitable for automotive applications?
Yes, the AD7091R-2BRUZ-RL7 is rated for −40°C to +125°C operation and features 1.5 kV HBM ESD protection, making it suitable for under-hood and cabin automotive subsystems such as occupancy sensing and HVAC feedback. While not AEC-Q200 certified out-of-box, its extended temperature range and robust specifications align with Grade 1 automotive requirements per the datasheet (p.7, Absolute Maximum Ratings).
AD7091R-2BRUZ-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:
- 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-RL7 FAQ
1.How can I place an order for AD7091R-2BRUZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7091R-2BRUZ-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 AD7091R-2BRUZ-RL7 reliable?
The price and inventory of AD7091R-2BRUZ-RL7 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-RL7 is usually 5 days.
3.What payment methods are accepted for AD7091R-2BRUZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7091R-2BRUZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7091R-2BRUZ-RL7?
AD7091R-2BRUZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7091R-2BRUZ-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 AD7091R-2BRUZ-RL7?
For technical support, including AD7091R-2BRUZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7091R-2BRUZ-RL7 requirements.
6.How does Aetrix verify that AD7091R-2BRUZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7091R-2BRUZ-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 AD7091R-2BRUZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7091R-2BRUZ-RL7?
All AD7091R-2BRUZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7091R-2BRUZ-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 AD7091R-2BRUZ-RL7 part is unused and in its original packaging.
Return procedure for AD7091R-2BRUZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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