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Analog Devices Inc. AD7091R-5BCPZ-RL7
- Part No.:
- AD7091R-5BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7091R-5BCPZ-RL7.pdf
- Description:
- IC ADC 12BIT SAR 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,165
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Product details
Overview
AD7091R-5BCPZ-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 operation from 2.7 V to 5.25 V supply. It delivers 68 dB SNR at 1 kHz input, supports autocycle/channel sequencing, and targets battery-powered sensor monitoring in medical instruments and portable diagnostics.
For engineers reviewing the AD7091R-5BCPZ-RL7 datasheet, AD7091R-5BCPZ-RL7 pinout, AD7091R-5BCPZ-RL7 application, or AD7091R-5BCPZ-RL7 equivalent, key selection criteria include I²C-compatible 400 kHz fast-mode timing, 90 µW typical power at 3 V, 4 single-ended analog inputs with channel sequencer, and −40°C to +125°C industrial temperature range.
Technical Context
The AD7091R-5BCPZ-RL7 integrates a wide-bandwidth track-and-hold amplifier (1.5 MHz full-power bandwidth), on-chip oscillator, and programmable configuration register for power management, alert thresholds, busy indication, and GPO control. Its I²C interface supports standard (100 kHz) and fast (400 kHz) modes with configurable slave address via AS0/AS1 pins.
Conversion can be initiated via CONVST/GPO1 edge trigger, I²C command write, or software-enabled autocycle mode with four throughput settings (90–880 µs per conversion). The MUXOUT/ADCIN pins enable external signal conditioning before acquisition, and the ALERT/BUSY/GPO0 pin provides flexible status signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precise analog sensing in portable instrumentation. |
| SNR | 68 dB typical at 1 kHz - enables accurate low-noise measurement of physiological or environmental signals. |
| Power (Normal Mode) | 90 µW typical at 3 V, 400 kHz I²C - extends battery life in wearable and handheld devices. |
| Reference | On-chip 2.5 V ±10 mV, 5 ppm/°C drift - eliminates external reference component and reduces BOM cost. |
| Input Channels | 4 single-ended - supports simultaneous monitoring of multiple sensors (e.g., temperature, pressure, voltage rails). |
| Throughput Rate | 22.22 kSPS in command mode - sufficient for real-time sampling in diagnostic and control loop applications. |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and high-reliability medical equipment. |
Pinout & Package
AD7091R-5BCPZ-RL7 is packaged in a 20-lead LFCSP (4 mm × 4 mm, 0.5 mm pitch) with exposed pad recommended for grounding. Pin functions are validated per Analog Devices Rev. A datasheet Figures 3–4 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN0–VIN3 | Analog Input Channels 0–3 | Single-ended inputs referenced to VREF; each accepts 0 V to VREF range with ≤10 pF acquisition capacitance. |
| REFIN/REFOUT | Reference Input/Output | Supplies or sources 2.5 V internal reference; supports external reference from 1.0 V to VDD with <5 ppm/°C drift impact. |
| ALERT/BUSY/GPO0 | Configurable Multifunction Output | Programmable as out-of-limit alert, conversion-in-progress indicator, or general-purpose logic output. |
| CONVST/GPO1 | Convert Start / General-Purpose Output | Falling-edge triggered conversion start; also usable as GPO1 in command/autocycle modes. |
| SCL/SDA | I²C Clock/Data Interface | Open-drain, 1.8 V–5.25 V tolerant; supports 400 kHz fast-mode timing with pull-up resistors required. |
| VDRIVE | Digital I/O Supply | Independent logic rail (1.8 V–5.25 V) decoupled separately; enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Serial Interface | Fully compatible with standard (100 kHz) and fast (400 kHz) modes; no external level shifters needed for 1.8 V–5.25 V logic systems. |
| Autocycle Mode | Four user-selectable throughput rates (90–880 µs/conversion); eliminates host CPU polling overhead in continuous monitoring. |
| Channel Sequencer | Preprogrammed scan order across all 4 inputs; simplifies firmware for multi-sensor data acquisition without manual MUX control. |
| Power-Down Mode | 550 nA typical at 5.25 V - reduces quiescent current by >99% vs. active mode, critical for intermittent wake-up architectures. |
| MUXOUT/ADCIN Pins | Direct access to multiplexer output and ADC input; enables external RC filtering or op-amp buffering to improve anti-aliasing and drive capability. |
Applications
| Medical Instrumentation | Battery-Powered Diagnostics |
|---|---|
Use Scenario: Continuous vital sign monitoring (ECG, SpO₂, temperature) in portable patient monitors. IC Role / Device Role / Timing Role: 4-channel analog front-end digitizer with integrated reference and I²C output for microcontroller host. Use Value: Ultra-low 90 µW operating power extends single-charge battery life; 68 dB SNR ensures clinical-grade signal fidelity. | Use Scenario: Field-deployable environmental sensor node measuring humidity, CO₂, and ambient light. IC Role / Device Role / Timing Role: Low-power ADC acquiring from multiple analog sensors and reporting via I²C to an ultra-low-power MCU. Use Value: Autocycle mode enables deterministic sampling without CPU intervention; power-down current <1 µA minimizes sleep-state leakage. |
| Industrial Control Systems | Optical Sensor Interfaces |
Use Scenario: Modular I/O module in PLC rack monitoring 4 analog process signals (4–20 mA loops, thermocouples). IC Role / Device Role / Timing Role: Precision 12-bit digitizer with −40°C to +125°C rating and channel-to-channel isolation >105 dB. Use Value: On-chip 2.5 V reference eliminates calibration drift; wide input bandwidth (1.5 MHz) supports fast transient detection. | Use Scenario: Optical smoke detector using photodiode array with correlated double sampling. IC Role / Device Role / Timing Role: High-SNR ADC capturing low-level photocurrent signals with minimal added noise. Use Value: 68 dB SNR at 1 kHz and low aperture jitter (40 ps) preserve dynamic range for weak optical signals. |
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 |
|---|---|---|---|
| ADS7953IRHBT | 12-bit, 16-channel, SPI interface, 1.8 V–5.25 V supply, 1.25 µA power-down current | Higher channel count but lacks integrated reference and I²C interface; requires external ref and SPI host | Select when >4 channels or SPI ecosystem is mandatory; avoid if I²C integration and reference simplicity are priorities. |
| MAX11131ETE+ | 12-bit, 4-channel, I²C interface, 2.5 V internal reference, 1.5 µA power-down current, 500 kSPS max rate | Higher throughput but higher power (1.2 mW active) and narrower temp range (−40°C to +85°C) | Select for faster sampling in non-extended-temp environments; avoid for battery-critical or high-temp industrial use. |
Compared with ADS7953IRHBT and MAX11131ETE+, the AD7091R-5BCPZ-RL7 uniquely balances ultra-low power (90 µW), integrated 2.5 V reference, I²C compatibility, and extended temperature operation - making it optimal for compact, energy-constrained, and ruggedized sensor nodes.
Availability
AD7091R-5BCPZ-RL7 is available at Aetrix Electronics and suitable for battery-powered systems, medical instrumentation, and industrial control applications requiring stable component supply and long-term lifecycle support.
Supply support for AD7091R-5BCPZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7091R-5 product line delivers ultra-low-power, multichannel SAR ADCs optimized for portable, battery-operated, and high-reliability sensing applications where precision, small size, and minimal power are critical.
FAQ
What is the maximum I²C clock frequency supported by the AD7091R-5BCPZ-RL7?
The AD7091R-5BCPZ-RL7 supports I²C fast mode up to 400 kHz, with guaranteed timing compliance including t1 = 0.6 µs SCL high time and t3 = 100 ns data setup time. Standard mode (100 kHz) is also fully supported, enabling interoperability with legacy controllers. The device's I²C interface operates across the full VDRIVE range (1.8 V to 5.25 V), and AD7091R-5BCPZ-RL7 requires external pull-up resistors on SDA and SCL lines.
Does the AD7091R-5BCPZ-RL7 require an external reference voltage?
No, the AD7091R-5BCPZ-RL7 includes a factory-trimmed 2.5 V on-chip reference with 5 ppm/°C typical drift and ±10 mV initial accuracy. This eliminates the need for an external reference in most applications. However, the REFIN/REFOUT pin supports overdriving with an external reference from 1.0 V to VDD, allowing calibration or enhanced stability when required. AD7091R-5BCPZ-RL7 maintains full specification compliance whether using internal or external reference.
How does the channel sequencer function in the AD7091R-5BCPZ-RL7?
The AD7091R-5BCPZ-RL7 channel sequencer allows preprogramming of a fixed scan order across its four single-ended inputs (VIN0–VIN3) via the configuration register. In autocycle mode, it automatically cycles through the selected channels without host intervention, supporting throughput rates of 90–880 µs per conversion depending on setting. This reduces firmware complexity and CPU load in continuous monitoring applications. AD7091R-5BCPZ-RL7 retains individual channel data alignment and supports alert thresholding per channel.
What is the power consumption of the AD7091R-5BCPZ-RL7 in power-down mode?
In power-down mode, the AD7091R-5BCPZ-RL7 draws 550 nA typical at VDD = 5.25 V and 435 nA typical at VDD = 3 V, with maximum values of 17 µA and 15 µA respectively. This ultra-low quiescent current enables years of operation in energy-harvesting or coin-cell-powered devices. Power-down is entered via the configuration register or automatic entry after conversion completion in certain modes. AD7091R-5BCPZ-RL7 wakes instantly upon I²C activity or CONVST assertion.
Can the AD7091R-5BCPZ-RL7 operate across the full industrial temperature range?
Yes, the AD7091R-5BCPZ-RL7 is fully specified and tested from −40°C to +125°C ambient temperature. Key parameters-including INL (±0.8 LSB), offset error drift (2 ppm/°C), gain error drift (1 ppm/°C), and power-down current-are guaranteed across this range. The LFCSP package's low thermal resistance (θJA = 52°C/W) supports reliable operation in thermally demanding environments such as motor drives, automotive under-hood modules, and industrial enclosures. AD7091R-5BCPZ-RL7 meets these specs without derating.
AD7091R-5BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad, CSP
- 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-LFCSP (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7091R-5BCPZ-RL7 FAQ
1.How can I place an order for AD7091R-5BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7091R-5BCPZ-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-5BCPZ-RL7 reliable?
The price and inventory of AD7091R-5BCPZ-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-5BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7091R-5BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7091R-5BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7091R-5BCPZ-RL7?
AD7091R-5BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7091R-5BCPZ-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-5BCPZ-RL7?
For technical support, including AD7091R-5BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7091R-5BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7091R-5BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7091R-5BCPZ-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-5BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7091R-5BCPZ-RL7?
All AD7091R-5BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7091R-5BCPZ-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-5BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7091R-5BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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