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Analog Devices Inc. AD7091R-4BCPZ-RL7
- Part No.:
- AD7091R-4BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7091R-4BCPZ-RL7.pdf
- Description:
- IC ADC 12BIT SAR 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,253
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Product details
Overview
AD7091R-4BCPZ-RL7 from Analog Devices is a 4-channel, 12-bit, 1 MSPS successive approximation register (SAR) analog-to-digital converter optimized for ultralow-power battery-operated systems. It features an on-chip 2.5 V reference (5 ppm/°C drift), integrated channel sequencer, and SPI-compatible digital interface - delivering 70 dB SNR at 10 kHz, ±0.7 LSB typical INL, and 1.4 mW power consumption at 3 V/1 MSPS.
For engineers reviewing the AD7091R-4BCPZ-RL7 datasheet, AD7091R-4BCPZ-RL7 pinout, AD7091R-4BCPZ-RL7 application, or AD7091R-4BCPZ-RL7 equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions, confirmed alternative options, and supply-ready procurement guidance - all grounded in Rev. D datasheet and Analog Devices' official package documentation for the BCPZ (20-lead LFCSP) variant.
Technical Context
The AD7091R-4BCPZ-RL7 implements a true SAR architecture with no pipeline latency, enabling deterministic 600 ns conversion time and 1 MSPS throughput. Its integrated multiplexer supports preprogrammed channel sequencing across four single-ended inputs (VIN0–VIN3), with MUXOUT/ADCIN pins enabling external signal conditioning before acquisition.
It uses a dedicated VDRIVE supply (1.8 V to 5.25 V) decoupled independently from VDD (2.7 V to 5.25 V), allowing logic-level flexibility while maintaining full 12-bit DC accuracy and dynamic performance. The ALERT/BUSY/GPO0 and GPO1 pins are software-configurable for interrupt signaling, busy indication, or general-purpose output - controlled via an on-chip configuration register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Architecture | 12-bit SAR ADC - delivers precise, latency-free digitization without pipeline delay or calibration overhead. |
| Throughput Rate | 1 MSPS - enables real-time sampling of fast transients in sensor monitoring and control loops. |
| Power Consumption | 1.4 mW at 3 V/1 MSPS - extends battery life in portable medical instruments and handheld diagnostics. |
| Reference | On-chip 2.5 V ±10 mV, 5 ppm/°C drift - eliminates external reference ICs and reduces BOM count and layout area. |
| Dynamic Performance | 70 dB SNR / −80 dB THD at 10 kHz - supports high-fidelity acquisition of audio-band and physiological signals. |
| DC Accuracy | ±0.7 LSB typical INL, ±0.3 LSB typical DNL - ensures monotonicity and <0.03% full-scale error for precision measurement. |
| Operating Range | −40°C to +125°C, VDD = 2.7–5.25 V - qualified for industrial and automotive under-hood sensing applications. |
Pinout & Package
AD7091R-4BCPZ-RL7 is housed in a 20-lead, 4 mm × 4 mm LFCSP (Lead Frame Chip Scale Package) with exposed pad (EPAD), rated for θJA = 49.05°C/W. This thermally enhanced, space-constrained package supports high-density PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low SPI frame sync - enables multi-device bus sharing and low-power idle state when high. |
| CONVST | Convert Start Input | Falling-edge-triggered - initiates hold mode and conversion without software polling or timer dependency. |
| SDI/SDO/SCLK | SPI Interface Signals | Full-duplex, MSB-first, SCLK-falling-edge data output - compatible with standard microcontroller SPI peripherals. |
| VIN0–VIN3 | Analog Input Channels | Four single-ended inputs (0–VREF range) - support independent sensor connections without external mux hardware. |
| ALERT/BUSY/GPO0 | Configurable Output | Software-selectable function - reduces GPIO usage by combining interrupt, status, and control signaling on one pin. |
| GPO1 | General-Purpose Output | Dedicated digital output - usable for LED drive, enable signaling, or system handshake without register reconfiguration. |
| MUXOUT/ADCIN | Signal Conditioning Interface | Allows external op-amp filtering between multiplexer and track-and-hold - improves anti-aliasing and noise rejection. |
| REFIN/REFOUT | Reference I/O | 2.5 V output or 1.0–VDD input - supports internal reference use or external precision reference override for metrology-grade accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow Power Management | 550 nA typical power-down current at 5.25 V - enables >1-year battery life in wake-on-event sensor nodes. |
| Integrated Channel Sequencer | Preprogrammable scan order across 4 inputs - eliminates firmware overhead for round-robin acquisition in data loggers. |
| Daisy-Chain Mode | Supports cascaded SPI readout of multiple AD7091R devices - simplifies multi-node acquisition without additional controllers. |
| Flexible Logic Supply (VDRIVE) | Independent 1.8–5.25 V interface rail - allows direct connection to 1.8 V or 3.3 V microcontrollers without level shifters. |
| On-Chip Accurate Reference | 2.5 V ±10 mV, 5 ppm/°C drift - achieves <0.05% total unadjusted error over temperature without calibration. |
Applications
| Battery-Powered Medical Sensors | Industrial Process Monitoring |
|---|---|
Use Scenario: Continuous acquisition of ECG, temperature, and oxygen saturation signals in wearable diagnostic patches. IC Role / Device Role / Timing Role: 4-channel SAR ADC with sequenced sampling, low-latency conversion, and programmable alert thresholds for anomaly detection. Use Value: 1.4 mW active power and 550 nA sleep current extend coin-cell battery life beyond 18 months while maintaining 12-bit fidelity. |
Use Scenario: Multi-sensor data acquisition in PLC I/O modules measuring pressure, flow, and valve position. IC Role / Device Role / Timing Role: Precision front-end ADC with −40°C to +125°C operation, channel isolation >95 dB, and robust SPI interface for noisy factory environments. Use Value: On-chip 2.5 V reference and ±0.7 LSB INL eliminate external calibration, reducing test time and field drift compensation effort. |
| Optical Sensor Signal Conditioning | Portable Instrumentation Systems |
Use Scenario: Digitizing photodiode and ambient light sensor outputs in handheld spectrometers and gas analyzers. IC Role / Device Role / Timing Role: Low-noise ADC with MUXOUT/ADCIN interface for op-amp-based transimpedance amplification and anti-alias filtering. Use Value: 70 dB SNR at 10 kHz and 1.2 MHz full-power bandwidth preserve signal integrity of weak optical signals without oversampling. |
Use Scenario: Compact multimeter and oscilloscope probes requiring simultaneous voltage, current, and temperature measurement. IC Role / Device Role / Timing Role: 4-channel, 1 MSPS SAR converter with daisy-chain capability and BUSY indication for synchronized multi-unit capture. Use Value: 20-lead LFCSP package (4 mm × 4 mm) enables miniaturized probe heads while supporting full 12-bit resolution and SPI interoperability. |
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-2BCPZ-RL7 | 2-channel version in same 20-lead LFCSP package; identical power, speed, and accuracy specs. | Lower channel count reduces routing complexity but requires external mux for >2 sensors. | Select when system uses ≤2 analog inputs and board space or cost optimization is prioritized over channel scalability. |
| ADS8684IPWR | 4-channel, 16-bit, 1 MSPS SAR ADC; higher resolution but 12.5 mW power at 3 V; no on-chip reference. | Targets higher-accuracy industrial DAQ where 12-bit quantization noise is insufficient. | Choose when ENOB >11.5 bits is required and thermal/power budget permits 9× higher active power than AD7091R-4BCPZ-RL7. |
Compared with AD7091R-4BCPZ-RL7, the AD7091R-2BCPZ-RL7 offers identical performance per channel in a smaller footprint but lacks channel scalability, while the ADS8684IPWR trades ultralow power for higher resolution and external reference dependency - making AD7091R-4BCPZ-RL7 optimal for battery-constrained, 12-bit multichannel sensing where size and efficiency dominate.
Availability
AD7091R-4BCPZ-RL7 is available at Aetrix Electronics and suitable for battery-powered medical instruments, industrial process monitors, and portable instrumentation systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AD7091R-4BCPZ-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, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD7091R-4BCPZ-RL7 belongs to Analog Devices' ultralow-power SAR ADC product line, designed specifically for energy-constrained, multichannel data acquisition in portable and remote sensing applications - emphasizing integration, precision, and ease of system-level implementation.
FAQ
What is the package type and lead count for AD7091R-4BCPZ-RL7?
AD7091R-4BCPZ-RL7 uses a 20-lead, 4 mm × 4 mm LFCSP (Lead Frame Chip Scale Package) with exposed pad (EPAD), as confirmed in the Rev. D datasheet Pin Configurations section for the 4-channel variant. This package supports thermal dissipation of θJA = 49.05°C/W and is RoHS-compliant and halogen-free.
Does AD7091R-4BCPZ-RL7 include an internal voltage reference?
Yes, AD7091R-4BCPZ-RL7 integrates a precise 2.5 V reference with ±10 mV initial tolerance and 5 ppm/°C typical drift, accessible via the REFIN/REFOUT pin. It can be used directly or overridden with an external reference from 1.0 V to VDD - eliminating need for external reference ICs in most designs.
How many analog input channels does AD7091R-4BCPZ-RL7 support, and what is their configuration?
AD7091R-4BCPZ-RL7 supports four single-ended analog inputs (VIN0–VIN3), each with 0 V to VREF input range. These are internally multiplexed and sequenced via an on-chip programmable channel sequencer - no external hardware mux is required for basic round-robin acquisition.
What digital interface does AD7091R-4BCPZ-RL7 use, and is it compatible with standard microcontrollers?
AD7091R-4BCPZ-RL7 uses a standard SPI-compatible serial interface (CS, SCLK, SDI, SDO) with MSB-first, falling-edge data output, and burst-mode timing. It is fully compatible with common microcontroller SPI peripherals (e.g., ARM Cortex-M, PIC, MSP430) without protocol translation or glue logic.
Can AD7091R-4BCPZ-RL7 operate from a 1.8 V logic supply?
Yes, AD7091R-4BCPZ-RL7 supports VDRIVE from 1.8 V to 5.25 V independently of VDD (2.7–5.25 V), enabling direct interfacing with 1.8 V microcontrollers. However, full 1 MSPS throughput requires VDRIVE ≥ 2.7 V; at 1.8 V, the device remains functional but throughput is reduced per Table 2 timing specifications.
AD7091R-4BCPZ-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):
- 1M
- Number of Inputs:
- 4
- 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:
- 20-LFCSP (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7091R-4BCPZ-RL7 FAQ
1.How can I place an order for AD7091R-4BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7091R-4BCPZ-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-4BCPZ-RL7 reliable?
The price and inventory of AD7091R-4BCPZ-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-4BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7091R-4BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7091R-4BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7091R-4BCPZ-RL7?
AD7091R-4BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7091R-4BCPZ-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-4BCPZ-RL7?
For technical support, including AD7091R-4BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7091R-4BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7091R-4BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7091R-4BCPZ-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-4BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7091R-4BCPZ-RL7?
All AD7091R-4BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7091R-4BCPZ-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-4BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7091R-4BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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