AD7091R-2BRUZ - 12-Bit 1MSPS SAR ADC | Analog Devices
MPN: AD7091R-2BRUZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $3.04 | $3,040.00 |
Drop-in alternatives for AD7091R-2BRUZ 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:
AD7091R-2BRUZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
AD7091R-4BRUZ
β Drop-Inβ In Stock
$2.9 / Unit
View Datasheet βAD7091R-8BRUZ
β Drop-Inπ Reference alternative (not in catalog)
MAX11108
β Drop-Inπ Reference alternative (not in catalog)
LTC2311-12
β‘ Same Packageπ Reference alternative (not in catalog)
AD7091R-2BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Input Channels | 2 |
| Sampling Rate | 1 MSPS |
| Input Type | Single-ended |
| Interface | SPI |
| Supply Voltage Range | 2.7 V to 5.25 V |
| Reference Voltage | 2.5 V (internal) |
| Power Consumption | 367 Β΅A typical at 3 V and 1 MSPS |
| Input Bandwidth | 1.5 MHz |
| Package | 16-lead TSSOP |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Converters | 1 |
| Architecture | SAR |
AD7091R-2BRUZ Pin Configuration
| Pin 1 | VDD β Power supply input |
| Pin 2 | VIN0 β Analog input channel 0 |
| Pin 3 | VIN1 β Analog input channel 1 |
| Pin 4 | GND β Ground |
| Pin 5 | SCLK β Serial clock input |
| Pin 6 | SDI β Serial data input |
| Pin 7 | SDO β Serial data output |
| Pin 8 | CS β Chip select (active low) |
| Pin 9 | CONVST β Conversion start input |
| Pin 10 | REF β Reference voltage input/output |
| Pin 11 | REFIN/REFOUT β Reference input/output |
| Pin 12 | GND β Ground |
| Pin 13 | VDRIVE β Logic supply voltage |
| Pin 14 | GND β Ground |
| Pin 15 | VDD β Power supply input |
| 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
AD7091R-2BRUZ is suitable for 6 applications: Battery Monitoring, Data Acquisition Systems, Industrial Process Control, Portable Instrumentation, Medical Monitoring, IoT and Smart Sensors.
Battery Monitoring
The AD7091R-2BRUZ is ideal for battery monitoring in portable and IoT devices due to its ultralow power consumption of 367 Β΅A at 3V and 12-bit resolution. It can accurately measure battery voltage and current, enabling precise state-of-charge estimation. The 1 MSPS sampling rate allows fast updates, while the SPI interface simplifies data transfer to a microcontroller. The wide supply voltage range (2.7V to 5.25V) accommodates varying battery voltages, and the internal 2.5V reference reduces external component count, making it a compact and efficient solution for battery-powered systems.
Recommended
Data Acquisition Systems
In data acquisition systems, the AD7091R-2BRUZ provides high-speed, low-power analog-to-digital conversion with 12-bit resolution and 1 MSPS sampling rate. Its wide input bandwidth of 1.5 MHz allows accurate capture of fast-changing signals. The SPI interface enables easy integration with DSPs and microcontrollers, while the channel sequencer allows preprogrammed selection of channels for sequential conversion. The low power consumption makes it suitable for portable data loggers and remote sensing applications, where battery life is critical. The internal reference and on-chip conversion clock simplify system design and reduce external components.
Recommended
Industrial Process Control
The AD7091R-2BRUZ is well-suited for industrial process control applications, such as monitoring temperature, pressure, and flow. Its 12-bit resolution provides adequate precision for most industrial sensors, while the 1 MSPS sampling rate enables real-time monitoring. The wide operating temperature range (-40Β°C to +125Β°C) ensures reliable operation in harsh industrial environments. The SPI interface allows direct connection to industrial microcontrollers, and the low power consumption reduces heat dissipation in control cabinets. The internal 2.5V reference ensures stable conversions over temperature, making it a robust choice for industrial automation.
Recommended
Portable Instrumentation
For portable instrumentation, the AD7091R-2BRUZ offers a perfect balance of performance and power efficiency. Its ultralow power consumption (367 Β΅A at 3V) extends battery life in handheld devices such as multimeters, data loggers, and portable analyzers. The 12-bit resolution and 1 MSPS sampling rate provide accurate and fast measurements. The compact 16-lead TSSOP package saves PCB space, and the SPI interface simplifies connection to low-power microcontrollers. The internal reference eliminates the need for an external reference, reducing component count and board area, making it ideal for space-constrained portable designs.
Recommended
Medical Monitoring
The AD7091R-2BRUZ is suitable for medical monitoring devices, such as patient vital sign monitors and portable health trackers. Its low power consumption is critical for battery-operated medical devices, and the 12-bit resolution provides sufficient accuracy for physiological signal acquisition. The 1 MSPS sampling rate allows real-time monitoring of fast-changing signals like ECG and EEG. The wide supply voltage range and internal reference simplify power supply design, while the SPI interface enables easy integration with medical-grade microcontrollers. The compact TSSOP package is ideal for wearable and implantable devices where size is a constraint.
Recommended
IoT and Smart Sensors
In IoT and smart sensor applications, the AD7091R-2BRUZ provides high-resolution analog-to-digital conversion with minimal power consumption, making it ideal for battery-powered wireless sensors. The 12-bit resolution and 1 MSPS sampling rate enable accurate and fast data acquisition from various sensors, such as temperature, humidity, and pressure. The SPI interface allows seamless connection to low-power wireless microcontrollers, and the internal reference reduces external components. The wide supply voltage range accommodates different battery configurations, and the compact package is suitable for space-constrained sensor nodes. The low power consumption extends battery life, enabling long-term deployment in remote locations.
Recommended
Recommended Products Summary
Engineering reference data for AD7091R-2BRUZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7091R-2BRUZ-RL7 | AD7091R-4BRUZ | AD7091R-8BRUZ | MAX11108 | LTC2311-12 |
|---|---|---|---|---|---|---|
| Package | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-TSSOP | 16-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated | Analog Devices |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Number of Channels | 2 | 2 | 4 | 8 | 1 | 1 |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Supply Voltage Range | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Power Consumption | 367 Β΅A at 3V | 367 Β΅A at 3V | 367 Β΅A at 3V | 367 Β΅A at 3V | [DATA_NEEDED] | [DATA_NEEDED] |
| Internal Reference | Yes (2.5V) | Yes (2.5V) | Yes (2.5V) | Yes (2.5V) | Yes | Yes |
Key Differentiators
- Ultralow power consumption (vs MAX11108)
- Internal 2.5V reference (vs LTC2311-12)
- Multiple channel options (vs MAX11108)
Design Notes
The AD7091R-2BRUZ operates from 2.7V to 5.25V. Use a low-impedance power source and place a 0.1Β΅F ceramic capacitor close to the VDD pin and a 10Β΅F capacitor for bulk decoupling. The VDRIVE pin should be connected to the logic supply voltage to ensure proper SPI signal levels. Ensure that the analog input voltage does not exceed the supply voltage to avoid damage.
For optimal performance, place the AD7091R-2BRUZ close to the signal source to minimize trace length and reduce noise pickup. Use a solid ground plane and separate analog and digital ground areas if possible. Keep the SPI lines short and avoid routing them near high-speed digital signals to prevent crosstalk. The REF pin should be bypassed with a 0.1Β΅F capacitor to ground.
Ensure that the CONVST signal is properly timed to avoid missing conversions. The SPI interface must be configured with the correct clock polarity and phase (CPOL=0, CPHA=1) as per the datasheet. Do not leave the SDI pin floating; tie it to a defined logic level. Also, ensure that the reference voltage is stable and within the specified range to maintain accuracy.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for this non-automotive part.
