AD7091R-2BRUZ - 12-Bit 1MSPS SAR ADC | Analog Devices
MPN: AD7091R-2BRUZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
Drop-in alternatives for AD7091R-2BRUZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7091R-4BRUZ
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →AD7091R-8BRUZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD7091BRUZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD7091R-2BRUZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7091R-2BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Input Channels | 2 single-ended |
| Sampling Rate | 1 MSPS |
| Input Type | Single-ended |
| Data Interface | SPI |
| Architecture | SAR |
| Reference Type | Internal, 2.5V |
| Supply Voltage | 2.7V to 5.25V |
| Power Consumption | 367 µA typical at 3V, 1 MSPS |
| Input Bandwidth | 1.5 MHz |
| Package | 16-lead TSSOP |
| Operating Temperature Range | -40°C to +125°C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Converters | 1 |
AD7091R-2BRUZ Pin Configuration
| Pin 1 | VDD — Power supply, 2.7V to 5.25V |
| Pin 2 | VIN0 — Analog input channel 0 |
| Pin 3 | VIN1 — Analog input channel 1 |
| Pin 4 | GND — Ground |
| Pin 5 | SCLK — Serial clock input |
| Pin 6 | SDI — Serial data input |
| Pin 7 | SDO — Serial data output |
| Pin 8 | CS — Chip select, active low |
| Pin 9 | CONVST — Conversion start input |
| Pin 10 | REF — Reference input/output |
| Pin 11 | REFIN/REFOUT — Reference input/output |
| Pin 12 | GND — Ground |
| Pin 13 | VDRIVE — Logic supply voltage |
| Pin 14 | GND — Ground |
| Pin 15 | VDD — Power supply |
| Pin 16 | GND — 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 systems due to its ultralow power consumption of 367 µA at 3V and 1 MSPS sampling rate. It can accurately measure battery voltage and current with minimal power drain, extending battery life in portable devices. The internal 2.5V reference ensures accurate measurements without external components, simplifying the design. The SPI interface allows easy integration with microcontrollers for real-time monitoring and data logging.
Recommended
Data Acquisition Systems
The AD7091R-2BRUZ is well-suited for data acquisition systems requiring high-speed, low-power analog-to-digital conversion. With a 1 MSPS sampling rate and 12-bit resolution, it can capture fast-changing signals accurately. The wide input bandwidth of 1.5 MHz allows it to handle high-frequency signals without aliasing. The SPI interface simplifies connection to DSPs and microcontrollers, enabling efficient data transfer. Its low power consumption makes it suitable for portable and battery-powered data loggers.
Recommended
Industrial Process Control
The AD7091R-2BRUZ is designed for industrial process control applications where reliability and accuracy are critical. Its wide supply voltage range of 2.7V to 5.25V allows operation in industrial environments with varying power rails. The 12-bit resolution and 1 MSPS sampling rate provide sufficient accuracy and speed for monitoring process variables such as temperature, pressure, and flow. The internal reference and SPI interface reduce external component count, enhancing system reliability. The industrial temperature range of -40°C to +125°C ensures operation in harsh conditions.
Recommended
Portable Instrumentation
The AD7091R-2BRUZ is an excellent choice for portable instrumentation due to its ultralow power consumption and compact 16-lead TSSOP package. It consumes only 367 µA at 3V, making it ideal for battery-powered devices such as handheld multimeters, portable data loggers, and field analyzers. The 1 MSPS sampling rate enables fast measurements, while the internal reference eliminates the need for external components, saving board space. The SPI interface allows easy connection to low-power microcontrollers, enabling efficient data processing and display.
Recommended
Medical Monitoring
The AD7091R-2BRUZ is suitable for medical monitoring devices that require low power and high accuracy. Its ultralow power consumption of 367 µA at 3V is critical for battery-operated medical devices such as portable patient monitors and wearable health trackers. The 12-bit resolution provides sufficient precision for vital sign monitoring, while the 1 MSPS sampling rate captures fast physiological signals. The internal reference and SPI interface simplify design and reduce component count, enhancing reliability. The compact TSSOP package is ideal for space-constrained medical devices.
Recommended
IoT and Smart Sensors
The AD7091R-2BRUZ is well-suited for IoT and smart sensor applications due to its low power consumption and small footprint. It can be used in wireless sensor nodes to digitize analog sensor outputs, such as temperature, humidity, and light, with 12-bit resolution and 1 MSPS sampling. The SPI interface allows direct connection to low-power microcontrollers and wireless transceivers, enabling efficient data transmission. The internal reference reduces external components, making it ideal for compact IoT devices. Its wide supply voltage range supports battery-powered operation.
Recommended
Recommended Products Summary
Engineering reference data for AD7091R-2BRUZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7091R-4BRUZ | AD7091R-8BRUZ | AD7091BRUZ | AD7091R-2BCPZ-RL7 |
|---|---|---|---|---|---|
| Package | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead LFCSP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 2 | 4 | 8 | 2 | 2 |
| Internal Reference | Yes, 2.5V | Yes, 2.5V | Yes, 2.5V | No | Yes, 2.5V |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Power Consumption | 367 µA at 3V | 367 µA at 3V | 367 µA at 3V | 367 µA at 3V | 367 µA at 3V |
| Input Bandwidth | 1.5 MHz | 1.5 MHz | 1.5 MHz | 1.5 MHz | 1.5 MHz |
| 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 |
Key Differentiators
- Ultralow power consumption (vs AD7091BRUZ)
- Internal 2.5V reference (vs AD7091BRUZ)
- Wide input bandwidth (vs AD7091R-4BRUZ)
Design Notes
The AD7091R-2BRUZ operates from a single 2.7V to 5.25V supply. To minimize noise, place a 0.1µF ceramic capacitor and a 10µF tantalum capacitor close to the VDD pin. The VDRIVE pin should be connected to the same supply as the host interface logic to ensure proper logic levels.
For optimal performance, use a solid ground plane and place the ADC close to the signal source. Keep analog input traces short and shielded to reduce noise pickup. Decouple the reference pin with a 1µF capacitor to ground to stabilize the internal reference.
Ensure the analog input voltage does not exceed the supply voltage (VDD) to avoid damaging the device. The SPI interface must be configured with the correct clock polarity and phase (CPOL=0, CPHA=1) for reliable data transfer. Also, avoid floating the CONVST pin; tie it high or low as needed.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for this non-automotive part.
