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Analog Devices Inc. AD7091R-5BRUZ-RL7
- Part No.:
- AD7091R-5BRUZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7091R-5BRUZ-RL7.pdf
- Description:
- IC ADC 12BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:128
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Product details
Overview
AD7091R-5BRUZ-RL7 from Analog Devices is a 12-bit, 4-channel, ultra-low-power successive approximation ADC with I²C interface, 2.5 V on-chip reference (5 ppm/°C drift), and 68 dB SNR at 1 kHz input. It operates from 2.7 V to 5.25 V, consumes just 90 µW typical at 3 V in fast mode, and supports autocycle, command, and sample modes - ideal for battery-powered medical sensors and portable instrumentation.
For engineers reviewing the AD7091R-5BRUZ-RL7 datasheet, AD7091R-5BRUZ-RL7 pinout, AD7091R-5BRUZ-RL7 application, or AD7091R-5BRUZ-RL7 equivalent, key selection considerations include its 20-lead LFCSP/TSSOP package, I²C-compatible 400 kHz fast-mode timing, 4 single-ended input channels with sequencer, ALERT/BUSY multifunction pins, and guaranteed no missing codes over temperature.
Technical Context
The AD7091R-5BRUZ-RL7 integrates a wide-bandwidth track-and-hold amplifier (1.5 MHz full-power bandwidth), on-chip oscillator, and programmable configuration register controlling channel sequencing, alert thresholds, GPO functions, and power modes. Its I²C interface supports both standard (100 kHz) and fast (400 kHz) modes with strict timing compliance per Table 2 of Rev. A datasheet.
Conversion is initiated via CONVST/GPO1 edge trigger, I²C write command, or software-configured autocycle mode (with four update rate settings: 90–880 µs). The MUXOUT and ADCIN pins enable external signal conditioning between multiplexer output and ADC input, while REFIN/REFOUT allows internal 2.5 V reference use or external reference override (1.0 V to VDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital levels for high-fidelity sensor digitization |
| SNR | 68 dB typical at 1 kHz - enables accurate low-noise measurement of small-signal analog inputs |
| INL | ±0.8 LSB max - ensures monotonicity and linearity critical for closed-loop control feedback |
| Power (Normal Mode) | 90 µW typical at 3 V, 400 kHz I²C - extends battery life in portable diagnostics |
| Power-Down Current | 435 nA typical at 3 V - reduces system standby power to sub-microwatt levels |
| Input Channels | 4 single-ended - supports simultaneous monitoring of multiple sensors without external mux |
| Reference | On-chip 2.5 V ±10 mV, 5 ppm/°C drift - eliminates external reference component and layout area |
Pinout & Package
AD7091R-5BRUZ-RL7 is available in a 20-lead LFCSP (4 mm × 4 mm, 0.5 mm pitch) and TSSOP package. Both packages share identical pin numbering and function mapping per Figures 3 and 4 of Rev. A datasheet, with exposed pad (EPAD) recommended to be soldered to GND for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AS0 / AS1 | I²C Address Inputs | Set unique 7-bit slave address (0x28–0x2F) - enables multi-device I²C bus sharing |
| CONVST/GPO1 | Edge-triggered Start Input / GPO | Falling edge initiates conversion; configurable as general-purpose output in command/autocycle modes |
| ALERT/BUSY/GPO0 | Multifunction Output | Configurable as out-of-bounds alert flag, conversion-in-progress indicator, or digital output |
| MUXOUT / ADCIN | Multiplexer Output / ADC Input | Allows external RC filter or op-amp buffer between mux and ADC - improves anti-aliasing and drive capability |
| REFIN/REFOUT | Reference I/O | Supplies or accepts 1.0 V–VDD reference - supports precision external references or eliminates BOM cost with internal 2.5 V |
| VDRIVE | Digital Interface Supply | Independent 1.8 V–5.25 V logic rail - enables mixed-voltage I²C interfacing without level shifters |
Key Features
| Feature | Design Value |
|---|---|
| I²C-Compatible Serial Interface | Supports 100 kHz standard and 400 kHz fast modes - interoperates with common microcontrollers without custom SPI hardware |
| Autocycle Mode with Configurable Rate | Four throughput settings (90–880 µs per conversion) - simplifies firmware by offloading channel sequencing to hardware |
| On-Chip 2.5 V Reference | 5 ppm/°C drift, 2.49–2.51 V output - achieves ±0.1% reference accuracy over −40°C to +125°C without external components |
| Programmable Alert Function | User-defined high/low limits with hysteresis per channel - enables autonomous fault detection without host polling |
| Channel-to-Channel Isolation | −105 dB typical - prevents crosstalk between simultaneously monitored analog signals (e.g., ECG leads) |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous acquisition of ECG, temperature, and SpO₂ signals in handheld patient monitors. IC Role / Device Role / Timing Role: 4-channel ADC digitizes analog front-end outputs with synchronized sampling and autonomous alerting on physiological thresholds. Use Value: Ultra-low 90 µW operating power extends single-CR2032 battery life beyond 12 months; on-chip reference eliminates calibration drift. | Use Scenario: Environmental parameter logging (temperature, humidity, pressure) in remote field deployments. IC Role / Device Role / Timing Role: ADC samples multiple sensors in autocycle mode, stores results in MCU memory, and enters 435 nA power-down between readings. Use Value: Sub-microwatt sleep current minimizes quiescent drain; I²C interface simplifies connection to low-pin-count MCUs like STM32L0. |
| Industrial Condition Monitoring | Optical Sensor Interfaces |
Use Scenario: Vibration and current sensing on motor drives in factory automation systems. IC Role / Device Role / Timing Role: Digitizes isolated analog outputs from current shunts and accelerometers using 4 single-ended inputs and programmable alert on overcurrent events. Use Value: −105 dB channel isolation prevents interference between high-dv/dt motor signals and sensitive analog measurements. | Use Scenario: Signal conditioning for photodiode or ambient light sensors in smart lighting controls. IC Role / Device Role / Timing Role: ADC acquires low-level photocurrent signals with 68 dB SNR and 1.5 MHz input bandwidth, enabling fast response to light transients. Use Value: Wide input bandwidth captures rapid light changes; MUXOUT/ADCIN pins allow integration of transimpedance amplifier directly at ADC input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822IDR | 12-bit, single-channel, SPI interface, 2.7–5.25 V supply, 1.25 mW typical power at 5 V | Lacks I²C, channel sequencing, and on-chip reference; requires external ref and level-shifting for 1.8 V logic | Choose ADS7822IDR only if SPI is preferred and system already includes precision external reference |
| MAX11131AUT+T | 12-bit, 4-channel, I²C interface, 2.7–3.6 V supply, 80 µA IDD at 3 V, no on-chip reference | Narrower VDD range; requires external 2.048 V or 2.5 V reference; lacks ALERT/BUSY multifunction pins | Select MAX11131AUT+T when operating strictly at 3.3 V and external reference is acceptable for cost-sensitive designs |
Compared with ADS7822IDR and MAX11131AUT+T, the AD7091R-5BRUZ-RL7 uniquely combines I²C compatibility, integrated 2.5 V reference, 4-channel sequencer, and sub-microwatt power-down - reducing BOM count, PCB area, and firmware complexity in space-constrained portable systems.
Availability
AD7091R-5BRUZ-RL7 is available at Aetrix Electronics and suitable for battery-powered medical instruments, portable data loggers, and industrial condition monitoring systems requiring stable component supply across extended temperature ranges (−40°C to +125°C) and long production lifecycles.
Supply support for AD7091R-5BRUZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision data conversion and power management solutions.
The AD7091R-5 product line delivers ultra-low-power, multichannel SAR ADCs optimized for energy-constrained, sensor-rich applications where accuracy, integration, and reliability must coexist - such as wearable diagnostics and remote environmental monitoring.
FAQ
What is the maximum I²C clock frequency supported by the AD7091R-5BRUZ-RL7?
The AD7091R-5BRUZ-RL7 supports I²C fast mode up to 400 kHz, with guaranteed timing compliance per Table 2 of Rev. A datasheet. Standard mode (100 kHz) is also fully supported. The device does not support high-speed I²C (3.4 MHz) or SMBus-specific protocols.
Does the AD7091R-5BRUZ-RL7 require an external reference voltage?
No, the AD7091R-5BRUZ-RL7 includes an accurate on-chip 2.5 V reference with 5 ppm/°C drift, eliminating the need for external reference components. However, the REFIN/REFOUT pin supports external reference override (1.0 V to VDD) when higher precision or different voltage is required.
How many analog input channels does the AD7091R-5BRUZ-RL7 support, and what type are they?
The AD7091R-5BRUZ-RL7 supports four single-ended analog input channels (VIN0–VIN3). It does not support differential inputs. Channel selection is managed by an internal sequencer that can be preprogrammed to cycle through any subset of the four channels in autocycle mode.
What is the purpose of the MUXOUT and ADCIN pins on the AD7091R-5BRUZ-RL7?
The MUXOUT pin provides access to the output of the internal analog multiplexer, and ADCIN connects directly to the ADC core. This separation allows external signal conditioning - such as RC filtering or op-amp buffering - between the multiplexer and ADC, improving noise immunity and driving capability for high-impedance sources.
Can the AD7091R-5BRUZ-RL7 operate from a 1.8 V digital supply?
Yes, the AD7091R-5BRUZ-RL7 supports VDRIVE from 1.8 V to 5.25 V independently of VDD (2.7 V to 5.25 V), enabling direct interfacing with 1.8 V microcontrollers without level shifters. Digital inputs (SCL, SDA, AS0, AS1, RESET, CONVST/GPO1) are referenced to VDRIVE, not VDD.
AD7091R-5BRUZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 22.22k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7091R-5BRUZ-RL7 FAQ
1.How can I place an order for AD7091R-5BRUZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7091R-5BRUZ-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-5BRUZ-RL7 reliable?
The price and inventory of AD7091R-5BRUZ-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-5BRUZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7091R-5BRUZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7091R-5BRUZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7091R-5BRUZ-RL7?
AD7091R-5BRUZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7091R-5BRUZ-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-5BRUZ-RL7?
For technical support, including AD7091R-5BRUZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7091R-5BRUZ-RL7 requirements.
6.How does Aetrix verify that AD7091R-5BRUZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7091R-5BRUZ-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-5BRUZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7091R-5BRUZ-RL7?
All AD7091R-5BRUZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7091R-5BRUZ-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-5BRUZ-RL7 part is unused and in its original packaging.
Return procedure for AD7091R-5BRUZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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