My Inquiry
My Account
Analog Devices Inc. AD7091R-8BRUZ-RL7
- Part No.:
- AD7091R-8BRUZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7091R-8BRUZ-RL7.pdf
- Description:
- IC ADC 12BIT SAR 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7091R-8BRUZ-RL7 from Analog Devices is an 8-channel, 12-bit, 1 MSPS successive approximation register (SAR) analog-to-digital converter optimized for ultralow-power battery-operated systems. It integrates a 2.5 V reference (5 ppm/°C drift), programmable channel sequencer, and SPI-compatible interface, operating from 2.7 V to 5.25 V supply with 1.4 mW power at full throughput.
For engineers reviewing the AD7091R-8BRUZ-RL7 datasheet, AD7091R-8BRUZ-RL7 pinout, AD7091R-8BRUZ-RL7 application, or AD7091R-8BRUZ-RL7 equivalent, key selection considerations include its 8-channel single-ended MUX architecture, 70 dB SNR at 10 kHz, ±1.0 LSB max INL, −40°C to +125°C operation, and daisy-chain capability for multi-ADC systems.
Technical Context
The AD7091R-8BRUZ-RL7 implements a true SAR conversion architecture with no pipeline latency, delivering deterministic 600 ns conversion time and 400 ns acquisition time. Its on-chip 2.5 V reference and internal conversion clock eliminate external timing components.
It supports flexible digital interface operation via separate VDD (2.7–5.25 V) and VDRIVE (1.8–5.25 V) supplies, enabling mixed-voltage system interfacing. The device uses a configurable register set to control channel sequencing, ALERT/BUSY/GPO0 multifunction pin behavior, and power-down entry/exit timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precision sensor digitization |
| Throughput Rate | 1 MSPS - enables real-time sampling of fast transients without data loss |
| SNR | 70 dB typical at 10 kHz - supports high-fidelity signal capture in noisy industrial environments |
| INL | ±1.0 LSB maximum - ensures monotonicity and accurate end-point linearity across temperature |
| Power (Normal Mode) | 1.4 mW at 3 V / 1 MSPS - extends battery life in portable medical and diagnostic devices |
| Power (Power-Down) | 435 nA at 3 V - allows microamp-level sleep-state current for always-on monitoring |
| Reference | On-chip 2.5 V ±10 mV, 5 ppm/°C drift - eliminates external reference IC and reduces BOM count |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
AD7091R-8BRUZ-RL7 is housed in a 24-lead, 4 mm × 4 mm LFCSP package with exposed pad (EPAD), optimized for thermal performance and compact PCB layout. Pin functions are defined per Table 7 of Rev. D datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low SPI frame sync; enables serial bus and controls SDO output enable timing |
| CONVST | Convert Start Input | Falling-edge-triggered signal that initiates hold mode and conversion sequence |
| MUXOUT | Multiplexer Output | Provides buffered analog multiplexer output; allows external filtering before ADCIN |
| ADCIN | ADC Track-and-Hold Input | Direct access point to internal sampling capacitor; decouples MUX and ADC stages |
| ALERT/BUSY/GPO0 | Configurable Digital Output | Three-mode pin: interrupt flag, busy indicator, or general-purpose output controlled by config register |
| GPO1 | General-Purpose Output | Dedicated digital output for status signaling or system control coordination |
| VDD / VDRIVE | Separate Power Rails | VDD powers analog core (2.7–5.25 V); VDRIVE sets logic I/O voltage (1.8–5.25 V) |
| REFIN/REFOUT | Reference I/O | 2.5 V internal reference output or external reference input (1.0 V to VDD) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Channel Sequencer | Preprogrammable 8-channel scan order eliminates host MCU polling overhead and simplifies firmware |
| Daisy-Chain Mode | Enables synchronous sampling across multiple AD7091R-8BRUZ-RL7 devices using single SCLK/CS lines |
| Flexible Power Management | Hardware-controlled power-down mode with sub-µA quiescent current and fast wake-up (<2 µs) |
| On-Chip 2.5 V Reference | 5 ppm/°C drift and 2.5 V ±10 mV accuracy reduce calibration burden and improve system stability |
| SPI/QSPI/MICROWIRE Compatible | 13-clock read cycle with MSB-first framing ensures interoperability with legacy and modern controllers |
| High Channel Isolation | −95 dB crosstalk enables simultaneous measurement of high-gain and low-level signals on adjacent channels |
Applications
| Portable Medical Monitoring | Industrial Sensor Hub |
|---|---|
Use Scenario: Continuous vital sign acquisition (ECG, SpO₂, temperature) in handheld patient monitors with 10+ hour battery life. IC Role / Device Role / Timing Role: 8-channel SAR ADC digitizes analog front-end outputs with synchronized sampling and low-latency SPI readout. Use Value: 1.4 mW at 1 MSPS and 435 nA power-down current directly extend runtime while maintaining clinical-grade SNR (70 dB). | Use Scenario: Multi-sensor condition monitoring (vibration, pressure, humidity, current) in predictive maintenance gateways. IC Role / Device Role / Timing Role: Centralized analog acquisition node with programmable sequencer and ALERT-driven interrupt on threshold breach. Use Value: Integrated 2.5 V reference and −95 dB channel isolation eliminate external components and prevent cross-channel interference in dense sensor arrays. |
| Automotive Cabin Control | Optical Diagnostic Module |
Use Scenario: Occupant detection, ambient light, and HVAC sensor fusion in automotive infotainment head units operating across −40°C to +125°C. IC Role / Device Role / Timing Role: High-temp-rated ADC interfaces thermistors, photodiodes, and potentiometers with single-supply simplicity. Use Value: Guaranteed operation over full automotive temperature range and 2.7–5.25 V supply tolerance simplify design for varying battery conditions. | Use Scenario: Precision optical power and wavelength monitoring in fiber-optic test equipment requiring stable DC response and low noise. IC Role / Device Role / Timing Role: Digitizes photodiode amplifier outputs with 70 dB SNR and ±1.0 LSB INL for calibrated intensity measurement. Use Value: On-chip reference drift (5 ppm/°C) and THD (−80 dB) ensure repeatable optical calibration without recalibration cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7091R-4BRUZ-RL7 | 4-channel variant in same 20-lead LFCSP package; identical specs except channel count and pinout | Limited to 4 inputs; lacks VIN4–VIN7 and second GPO; reduced daisy-chain scalability | Select when system requires only four analog inputs and board space is constrained |
| ADS8684IPWR | 4-channel, 16-bit, 1 MSPS SAR ADC; wider 4.75–5.25 V supply range; no integrated reference | Higher resolution but higher power (15 mW); requires external reference and driver; no ALERT/BUSY pin | Choose when 16-bit precision outweighs power and integration trade-offs in test equipment |
Compared with AD7091R-4BRUZ-RL7, the AD7091R-8BRUZ-RL7 provides double the channel density in a larger package, enabling fewer ADCs per system. Against ADS8684IPWR, it trades resolution for lower power, integrated reference, and richer feature set-making it preferable for battery-powered and space-constrained embedded systems.
Availability
AD7091R-8BRUZ-RL7 is available at Aetrix Electronics and suitable for battery-powered systems, industrial sensor hubs, and automotive cabin control requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7091R-8BRUZ-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 technologies, serving industrial, automotive, communications, and healthcare markets.
The AD7091R-8BRUZ-RL7 belongs to the AD7091R family of ultralow-power SAR ADCs designed specifically for energy-constrained, multichannel data acquisition in portable and harsh-environment applications.
FAQ
What is the maximum sampling rate of the AD7091R-8BRUZ-RL7?
The AD7091R-8BRUZ-RL7 achieves a maximum throughput rate of 1 MSPS with no pipeline delay. This is sustained across its full operating temperature range (−40°C to +125°C) and supply range (2.7 V to 5.25 V), confirmed by timing specification tCYC = 1000 ns in Table 2 of Rev. D datasheet. At this rate, the AD7091R-8BRUZ-RL7 consumes 1.4 mW at 3 V.
Does the AD7091R-8BRUZ-RL7 include an internal voltage reference?
Yes, the AD7091R-8BRUZ-RL7 integrates a precise 2.5 V reference with typical drift of 5 ppm/°C and output accuracy of 2.49 V to 2.51 V at 25°C. The REFIN/REFOUT pin supports both internal reference use and external reference override (1.0 V to VDD), as specified in Table 1 and Pin Function Descriptions section.
How many analog input channels does the AD7091R-8BRUZ-RL7 support?
The AD7091R-8BRUZ-RL7 supports eight single-ended analog input channels (VIN0 through VIN7), as confirmed by its part number suffix "-8", functional block diagram, and Table 7 pin descriptions. All eight channels are accessible via the internal programmable sequencer and share the MUXOUT/ADCIN signal path.
What package type is used for the AD7091R-8BRUZ-RL7?
The AD7091R-8BRUZ-RL7 is packaged in a 24-lead, 4 mm × 4 mm LFCSP (Lead Frame Chip Scale Package) with exposed pad (EPAD), as documented in the Ordering Guide and Figure 10 of Rev. D datasheet. This package offers low thermal resistance (θJA = 47.3°C/W) and compact footprint for space-sensitive designs.
Can the AD7091R-8BRUZ-RL7 operate with different supply voltages for analog and digital sections?
Yes, the AD7091R-8BRUZ-RL7 features independent VDD (2.7–5.25 V, analog core) and VDRIVE (1.8–5.25 V, digital I/O) supplies. This allows interfacing with 1.8 V, 2.5 V, 3.3 V, or 5 V controllers without level shifters, as verified in Table 1 (POWER REQUIREMENTS) and Pin Function Descriptions.
What is the purpose of the ALERT/BUSY/GPO0 pin on the AD7091R-8BRUZ-RL7?
The ALERT/BUSY/GPO0 pin is a multifunction terminal configured via the on-chip configuration register. It can serve as an interrupt flag (ALERT) when conversion results exceed user-defined limits, a conversion-in-progress indicator (BUSY), or a software-controlled general-purpose output (GPO0), as detailed in Table 7 and Modes of Operation section of the AD7091R-8BRUZ-RL7 datasheet.
AD7091R-8BRUZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-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:
- 8
- 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:
- 24-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7091R-8BRUZ-RL7 FAQ
1.How can I place an order for AD7091R-8BRUZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7091R-8BRUZ-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-8BRUZ-RL7 reliable?
The price and inventory of AD7091R-8BRUZ-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-8BRUZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7091R-8BRUZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7091R-8BRUZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7091R-8BRUZ-RL7?
AD7091R-8BRUZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7091R-8BRUZ-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-8BRUZ-RL7?
For technical support, including AD7091R-8BRUZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7091R-8BRUZ-RL7 requirements.
6.How does Aetrix verify that AD7091R-8BRUZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7091R-8BRUZ-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-8BRUZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7091R-8BRUZ-RL7?
All AD7091R-8BRUZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7091R-8BRUZ-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-8BRUZ-RL7 part is unused and in its original packaging.
Return procedure for AD7091R-8BRUZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7091R-8BRUZ-RL7 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
