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Analog Devices Inc. AD7466BRM-REEL
- Part No.:
- AD7466BRM-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7466BRM-REEL.pdf
- Description:
- IC ADC 12BIT 1.6V LP 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,899
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Product details
Overview
AD7466BRM-REEL from Analog Devices is a 12-bit, micropower successive approximation ADC operating from 1.6 V to 3.6 V supply, delivering 200 kSPS throughput with 69 dB SINAD at 30 kHz input and 0.12 mW typical power at 1.6 V/100 kSPS. It features SPI/QSPI/MICROWIRE/DSP-compatible serial interface, internal VDD-referenced conversion, and no pipeline delay-used in ultra-low-power remote sensor nodes requiring high-resolution analog digitization.
For engineers reviewing the AD7466BRM-REEL datasheet, AD7466BRM-REEL pinout, AD7466BRM-REEL application, or AD7466BRM-REEL equivalent, key selection considerations include its 12-bit resolution with ±1.5 LSB INL, 6-lead SOT-23 package, 1.6 V minimum supply, 8 nA power-down current, and guaranteed no-missed-codes performance across −40°C to +85°C.
Technical Context
The AD7466BRM-REEL implements a standard successive approximation register (SAR) architecture with track-and-hold amplifier capable of >3 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS, and data is clocked out MSB-first on SDATA synchronized to SCLK falling edges, with four leading zeros followed by 12 data bits.
It uses an internal VDD-derived reference, enabling 0 V to VDD analog input range and eliminating external reference components. Power management is controlled via automatic power-down after conversion, reducing average current to 8 nA typical when idle, with acquisition time as low as 640 ns at VDD ≥ 1.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit-supports precise measurement of small signal variations in battery-powered instrumentation. |
| Throughput Rate | 200 kSPS maximum-enables real-time sampling of fast transients in medical or industrial sensors. |
| SINAD | 69 dB min at 30 kHz input (1.8–2.0 V)-ensures usable dynamic range for audio-band and vibration monitoring signals. |
| Power Consumption | 0.12 mW typical at 1.6 V/100 kSPS-extends battery life in multi-year IoT endpoint deployments. |
| Power-Down Current | 8 nA typical-minimizes quiescent drain during sleep intervals in duty-cycled systems. |
| Integral Nonlinearity | ±1.5 LSB max-guarantees monotonicity and accurate end-point linearity for calibration-critical applications. |
| Analog Input Range | 0 V to VDD-simplifies signal conditioning by eliminating level-shifting circuitry for single-supply systems. |
Pinout & Package
AD7466BRM-REEL is housed in a 6-lead SOT-23 package (JEDEC MO-178AA), footprint-compatible with space-constrained PCB layouts and reflow-solderable per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low control initiating conversion and framing serial data transfer; sampled on falling edge. |
| VDD | Power Supply | Single 1.6–3.6 V supply powering analog and digital sections; also serves as internal reference. |
| GND | Analog Ground | Common reference for all analog circuitry; must be connected to low-impedance system ground plane. |
| VIN | Analog Input | Single-ended input accepting 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching. |
| SDATA | Serial Data Output | Three-state output delivering 12-bit result MSB-first with four leading zeros; timing referenced to SCLK falling edge. |
| SCLK | Serial Clock | Input providing both data clocking and conversion timing; supports 10 kHz–3.4 MHz operation with 40/60 duty cycle. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-voltage operation | Functional down to 1.6 V supply-enables direct integration with primary lithium or coin-cell batteries without regulation. |
| No pipeline delay | Deterministic 4.7 μs max conversion time-simplifies timing-critical control loops and eliminates latency compensation. |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility-reduces firmware overhead and enables reuse across microcontroller families. |
| Internal VDD reference | Eliminates external reference IC and associated layout complexity while maintaining 0–VDD input range scalability. |
| Guaranteed no-missed-codes | Validated 12-bit monotonicity-ensures reliable detection of incremental physical changes in precision measurement systems. |
Applications
| Portable ECG Monitor | Wireless Sensor Node |
|---|---|
Use Scenario: Continuous acquisition of low-amplitude biopotential signals from dry electrodes in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary analog front-end digitizer capturing 12-bit samples at 100–200 kSPS with minimal power draw between Bluetooth transmission bursts. Use Value: 69 dB SINAD preserves diagnostic fidelity of QRS complexes; 8 nA power-down current extends single-charge battery life beyond 12 months. | Use Scenario: Multi-year environmental sensing in remote locations using solar-charged Li-ion or primary cells. IC Role / Device Role / Timing Role: High-resolution ADC interfacing with thermistor, humidity, and pressure sensors under intermittent MCU wake-up control. Use Value: 1.6 V operation allows direct connection to partially discharged batteries; 0.12 mW active power minimizes energy budget per sample. |
| Isolated Industrial Transmitter | Implantable Medical Sensor |
Use Scenario: Signal digitization in 4–20 mA loop-powered field instruments with galvanic isolation barriers. IC Role / Device Role / Timing Role: Low-noise, low-power ADC placed on isolated side, communicating via opto-isolated SPI to host controller. Use Value: 71 dB SNR at 30 kHz ensures accurate representation of process variable harmonics; 6-lead SOT-23 eases isolation barrier routing. | Use Scenario: Miniaturized telemetry modules implanted for chronic physiological monitoring with strict size and thermal constraints. IC Role / Device Role / Timing Role: Digitizing neural or bioimpedance signals with minimal self-heating and sub-μA quiescent current during standby. Use Value: 8 nA power-down current prevents tissue heating; 12-bit resolution supports adaptive gain algorithms without external amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 12-bit, 200 kSPS, 2.7–5.25 V supply, 1.25 mW at 3 V-higher voltage floor and power than AD7466BRM-REEL. | Requires LDO regulation for 1.6–1.8 V battery sources; less suitable for direct primary-cell interfaces. | Select ADS7822U only when system already operates at ≥2.7 V and higher SNR (72 dB) is prioritized over micropower. |
| MAX1116EUA+ | 12-bit, 100 kSPS, 2.7–3.6 V supply, 0.5 mW at 3 V-halved throughput and narrower supply range vs. AD7466BRM-REEL. | Limited to lower-bandwidth sensing; incompatible with 1.6–2.6 V battery voltages without boost converter. | Choose MAX1116EUA+ only if cost sensitivity outweighs throughput and voltage flexibility requirements. |
Compared with ADS7822U and MAX1116EUA+, the AD7466BRM-REEL uniquely supports true 1.6 V operation with 200 kSPS throughput and 8 nA shutdown current-making it the sole option for long-life, direct-battery, high-sample-rate applications where supply headroom is constrained.
Availability
AD7466BRM-REEL is available at Aetrix Electronics and suitable for battery-powered systems, medical instruments, remote data acquisition, and isolated data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7466BRM-REEL 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, headquartered in Norwood, MA, with design and manufacturing expertise spanning over 50 years.
The AD7466 family belongs to Analog Devices' precision micropower data acquisition product line, engineered specifically for ultra-low-power, high-resolution digitization in space- and energy-constrained embedded systems.
FAQ
What is the minimum supply voltage required for AD7466BRM-REEL to operate correctly?
The AD7466BRM-REEL is fully specified to operate at a minimum supply voltage of 1.6 V across the −40°C to +85°C temperature range. At this voltage, it maintains 12-bit resolution, guaranteed no-missed-codes behavior, and 100 kSPS throughput with 70.5 dB typical SNR. Operation below 1.6 V is not characterized and may result in degraded INL, increased missing codes, or failure to complete conversions.
Does AD7466BRM-REEL require an external reference voltage?
No, the AD7466BRM-REEL uses an internal reference derived directly from the VDD supply, establishing a 0 V to VDD analog input range. This eliminates the need for external reference ICs, reduces BOM count, and simplifies layout-particularly beneficial in compact, low-cost designs where board area and component count are critical.
How does the power-down mode function in AD7466BRM-REEL?
The AD7466BRM-REEL enters automatic power-down mode immediately after each conversion completes, drawing only 8 nA typical current. It remains in this state until the next CS falling edge initiates a new conversion. No software command or additional pin control is needed-power management is fully hardware-automated, ensuring minimal quiescent consumption without firmware overhead.
What serial interface protocols is AD7466BRM-REEL compatible with?
The AD7466BRM-REEL supports SPI, QSPI, MICROWIRE, and generic DSP serial interfaces. Its SDATA output is three-state and synchronized to the SCLK falling edge, with data formatted as four leading zeros followed by 12 MSB-first bits. It requires no mode pins or configuration registers-interfacing is plug-and-play with standard SPI peripherals on ARM Cortex-M, MSP430, and PIC microcontrollers.
Is AD7466BRM-REEL pin-compatible with other members of the AD7466/67/68 family?
Yes, AD7466BRM-REEL shares identical pinout and package (6-lead SOT-23) with AD7467BRM-REEL and AD7468BRM-REEL. All three variants use the same CS, VDD, GND, VIN, SDATA, and SCLK connections and identical timing protocol-allowing hardware design reuse across 12-, 10-, and 8-bit resolution requirements without PCB revision.
AD7466BRM-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- SPI, DSP
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7466BRM-REEL FAQ
1.How can I place an order for AD7466BRM-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7466BRM-REEL 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 AD7466BRM-REEL reliable?
The price and inventory of AD7466BRM-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7466BRM-REEL is usually 5 days.
3.What payment methods are accepted for AD7466BRM-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7466BRM-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7466BRM-REEL?
AD7466BRM-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7466BRM-REEL 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 AD7466BRM-REEL?
For technical support, including AD7466BRM-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7466BRM-REEL requirements.
6.How does Aetrix verify that AD7466BRM-REEL is sourced from the original manufacturer or authorized distributors?
All AD7466BRM-REEL 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 AD7466BRM-REEL meets industry standards.
7.What is the process for return or replacement of AD7466BRM-REEL?
All AD7466BRM-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7466BRM-REEL, 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 AD7466BRM-REEL part is unused and in its original packaging.
Return procedure for AD7466BRM-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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