AD7091R-5BRUZ - 12-Bit Ultralow Power ADC | Analog Devices
MPN: AD7091R-5BRUZ ✓ 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 | $2.88 | $2,880.00 |
Drop-in alternatives for AD7091R-5BRUZ — 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-5BRUZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7091R-5BRUZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7091R-5BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Inputs | 4 |
| Input Type | Single Ended |
| Data Interface | I2C |
| Sampling Rate | 22.22 kSPS (I2C fast mode) |
| Supply Voltage | 2.7 V to 5.25 V |
| Supply Current (typical) | 24 µA at 3 V (fast mode) |
| Internal Reference | 2.5 V |
| Operating Temperature Range | -40°C to +125°C |
| Package | 20-Lead TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Channels | 4 |
| Architecture | SAR |
| Reference Type | Internal/External |
AD7091R-5BRUZ Pin Configuration
| Pin 1 | VDD — Power supply input, 2.7 V to 5.25 V |
| Pin 2 | VIN0 — Analog input channel 0 |
| Pin 3 | VIN1 — Analog input channel 1 |
| Pin 4 | VIN2 — Analog input channel 2 |
| Pin 5 | VIN3 — Analog input channel 3 |
| Pin 6 | GND — Ground |
| Pin 7 | SDA — I2C data line |
| Pin 8 | SCL — I2C clock line |
| Pin 9 | ALERT — Out-of-bounds alert output |
| Pin 10 | CONVST/GPO1 — Conversion start or general purpose output |
| Pin 11 | VREF — Reference input/output |
| Pin 12 | VDRIVE — Logic supply for I2C interface |
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-5BRUZ is suitable for 6 applications: Portable Instrumentation, Battery Monitoring, Industrial Process Control, Medical Devices, IoT Sensors, Data Acquisition Systems.
Portable Instrumentation
The AD7091R-5BRUZ's ultralow power consumption of 24 µA at 3 V makes it ideal for battery-powered portable instruments such as handheld multimeters and data loggers. Its I2C interface allows easy connection to low-power microcontrollers, and the internal reference reduces external component count, saving board space and extending battery life. The 4-channel input capability enables monitoring of multiple sensors, such as temperature and humidity, in a single device.
Recommended
Battery Monitoring
In battery management systems, the AD7091R-5BRUZ accurately measures cell voltages and temperatures with its 12-bit resolution and 4 input channels. Its low supply current minimizes drain on the battery being monitored, and the wide operating temperature range (-40°C to +125°C) suits automotive and industrial environments. The programmable out-of-bounds alert can trigger an interrupt when voltage exceeds safe limits, enabling timely protection.
Recommended
Industrial Process Control
The AD7091R-5BRUZ is well-suited for industrial process control systems that monitor analog signals such as pressure, flow, and temperature. Its 12-bit resolution provides adequate precision for most control loops, and the I2C interface simplifies integration with industrial microcontrollers. The device's low power consumption reduces heat generation in control cabinets, and its wide temperature range ensures reliable operation in harsh factory environments.
Recommended
Medical Devices
In portable medical devices like glucose monitors and pulse oximeters, the AD7091R-5BRUZ's ultralow power consumption is critical for long battery life. Its small TSSOP package fits compact designs, and the I2C interface allows direct connection to medical-grade microcontrollers. The internal reference ensures stable measurements over time and temperature, which is essential for accurate patient monitoring.
Recommended
IoT Sensors
The AD7091R-5BRUZ is ideal for IoT sensor nodes that need to measure environmental parameters and transmit data wirelessly. Its 24 µA power consumption allows operation for years on a coin cell battery. The I2C interface is compatible with many wireless MCUs, and the 4-channel input can monitor multiple sensors, such as temperature, humidity, and light, reducing the number of components in the node.
Recommended
Data Acquisition Systems
The AD7091R-5BRUZ can be used in general-purpose data acquisition systems to digitize analog signals from various sensors. Its 12-bit resolution and 4 channels provide flexibility, while the I2C interface allows multiple ADCs to be connected to the same bus for expanding channel count. The internal reference simplifies design, and the low power consumption is beneficial in multi-channel systems where power dissipation is a concern.
Recommended
Recommended Products Summary
Engineering reference data for AD7091R-5BRUZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7091R-5BRUZ-RL7 | AD7091R-5BCPZ | MCP3201 |
|---|---|---|---|---|
| Package | 20-Lead TSSOP | 20-Lead TSSOP | 20-Lead LFCSP | 8-Pin PDIP/SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Microchip Technology |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Number of Inputs | 4 | 4 | 4 | 1 |
| Interface | I2C | I2C | I2C | SPI |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.5 V |
| Supply Current (typical) | 24 µA at 3 V | 24 µA at 3 V | 24 µA at 3 V | 500 µA at 5 V |
| Internal Reference | Yes (2.5 V) | Yes (2.5 V) | Yes (2.5 V) | No |
Key Differentiators
- Ultralow power consumption of 24 µA at 3 V (vs MCP3201)
- Internal 2.5 V reference (vs MCP3201)
- I2C interface with 4 input channels (vs MCP3201)
Design Notes
Decouple the VDD pin with a 0.1 µF ceramic capacitor placed as close as possible to the pin, and a 10 µF bulk capacitor. The VDRIVE pin should be decoupled with a 0.1 µF capacitor to ensure stable logic levels. The VREF pin should be bypassed with a 1 µF capacitor to ground to stabilize the internal reference.
Keep analog input traces short and away from digital signals to minimize noise coupling. Use a ground plane under the ADC to provide a low-impedance return path. For best performance, route the I2C lines (SDA, SCL) with pull-up resistors (typically 4.7 kΩ) to VDRIVE, and avoid crossing analog and digital traces.
Ensure that the I2C address is correctly configured to avoid bus conflicts. The AD7091R-5 has multiple address options set by the A0 and A1 pins. Also, do not exceed the absolute maximum ratings for VDD (6 V) and VDRIVE (6 V). When using the internal reference, ensure the VREF pin is not loaded with more than 10 µF to maintain stability.
Compliance Information
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification indicated.
