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Analog Devices Inc. AD7466BRMZ-REEL7
- Part No.:
- AD7466BRMZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7466BRMZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,634
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Product details
Overview
AD7466BRMZ-REEL7 from Analog Devices is a 12-bit, micropower successive approximation analog-to-digital converter (ADC) operating from 1.6 V to 3.6 V supply. It delivers 200 kSPS throughput, 70 dB SNR at 30 kHz input, and 0.12 mW typical power at 1.6 V/100 kSPS, targeting precision signal acquisition in ultra-low-power systems such as portable medical sensors and remote data loggers.
For engineers reviewing the AD7466BRMZ-REEL7 datasheet, AD7466BRMZ-REEL7 pinout, AD7466BRMZ-REEL7 application, or AD7466BRMZ-REEL7 equivalent, key selection considerations include its 6-lead SOT-23 package, SPI/QSPI/MICROWIRE-compatible serial interface, internal VDD-referenced conversion, no pipeline delay, and guaranteed no missing codes over full 12-bit range.
Technical Context
The AD7466BRMZ-REEL7 implements a standard successive approximation register (SAR) architecture with a track-and-hold amplifier supporting >3 MHz input bandwidth. Conversion is initiated on the falling edge of CS, and data is clocked out MSB-first on SDATA synchronized to SCLK falling edges.
It uses an internal reference derived from VDD, enabling a 0 V to VDD analog input range. The 16-cycle conversion time (at 3.4 MHz SCLK) yields 4.70 μs max conversion time and 200 kSPS maximum throughput, with automatic power-down reducing current to 8 nA typical between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic output and no missing codes across full scale |
| Throughput Rate | 200 kSPS max - supports real-time sampling of signals up to ~30 kHz with adequate Nyquist margin |
| SNR @ 30 kHz | 70 dB min (VDD ≥ 2.5 V) - enables accurate digitization of low-amplitude sensor signals in noisy environments |
| Power @ 100 kSPS | 0.9 mW max at 3 V - allows battery operation for months in duty-cycled data acquisition nodes |
| Supply Range | 1.6 V to 3.6 V - compatible with single-cell Li-ion, LiFePO₄, or dual-cell alkaline systems |
| INL | ±1.5 LSB max - ensures end-point linearity critical for closed-loop control feedback accuracy |
| Power-Down Current | 8 nA typical - minimizes quiescent drain during sleep intervals in energy-harvesting applications |
Pinout & Package
AD7466BRMZ-REEL7 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 | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Single power supply input (1.6–3.6 V); also serves as ADC reference source |
| 2 | GND | Analog ground reference for all internal circuitry and VIN return path |
| 3 | VIN | Single-ended analog input; accepts 0 V to VDD range with 20 pF input capacitance |
| 4 | SDATA | Serial data output; delivers 16-bit frame (4 leading zeros + 12-bit result) MSB-first on SCLK falling edge |
| 5 | SCLK | Serial clock input; controls both data transfer timing and internal conversion clock |
| 6 | CS | Active-low chip select; initiates sampling on falling edge and frames serial communication |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic, cycle-accurate sampling for time-critical control loops without latency uncertainty |
| VDD-referenced conversion | Eliminates need for external reference IC or routing, simplifying BOM and layout while scaling full-scale with supply |
| SPI/QSPI/MICROWIRE compatibility | Direct interfacing to common microcontrollers (e.g., STM32, MSP430, nRF52) without protocol translation logic |
| Automatic power-down | Reduces average system power by >99% between conversions-critical for intermittent sensing architectures |
| Guaranteed no missing codes | Ensures monotonicity required for position encoders, thermistor linearization, and safety-critical monitoring |
Applications
| Portable ECG Monitor | Wireless Sensor Node |
|---|---|
Use Scenario: Continuous acquisition of low-amplitude biopotential signals (0.5–5 mV) from dry electrodes under battery power. IC Role / Device Role / Timing Role: Primary front-end ADC capturing lead-II ECG waveform at 250 SPS with DC-coupled baseline stability. Use Value: 70 dB SNR and ±1.5 LSB INL preserve diagnostic fidelity; 0.12 mW at 1.6 V extends AA battery life beyond 12 months. |
Use Scenario: Intermittent temperature/humidity reading in a LoRaWAN node powered by energy harvesting. IC Role / Device Role / Timing Role: Low-duty-cycle signal digitizer triggered by MCU every 60 seconds, entering 8 nA power-down between samples. Use Value: Ultra-low quiescent current and fast wake-up (<640 ns acquisition) minimize energy overhead per measurement cycle. |
| Isolated Industrial Transmitter | Implantable Medical Device |
Use Scenario: Digitizing 4–20 mA loop sensor outputs across reinforced isolation barrier in hazardous-area transmitters. IC Role / Device Role / Timing Role: Isolated-side ADC referenced to local VDD, communicating via SPI through digital isolator. Use Value: VDD-referenced design avoids isolated reference IC; 6-lead SOT-23 eases layout in tight isolated zones. |
Use Scenario: Battery-powered neural signal acquisition in chronic implantable neurostimulators. IC Role / Device Role / Timing Role: High-fidelity analog front-end ADC sampling at 10 kSPS with minimal self-heating and leakage. Use Value: 1.6 V minimum supply enables use with aged primary cells; ±1 μA input leakage prevents tissue polarization artifacts. |
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 |
|---|---|---|---|
| ADS7822UID | 12-bit, 200 kSPS, 2.7–5.25 V supply, 8-pin SOIC package | Requires higher minimum supply (2.7 V); lacks 1.6 V operation and SOT-23 footprint | Select when board already uses 3.3 V rail and SOIC layout exists; avoid for sub-2 V battery systems. |
| MAX11100ETE+ | 12-bit, 500 kSPS, 2.7–3.6 V supply, 12-pin TDFN package | Higher speed and supply voltage floor; larger package and no 1.6 V support | Choose for higher throughput needs where 3 V+ supply is fixed and board area permits TDFN. |
Compared with ADS7822UID and MAX11100ETE+, the AD7466BRMZ-REEL7 uniquely supports 1.6 V operation and fits in the smallest footprint (SOT-23), making it optimal for size- and voltage-constrained portable and implantable designs-whereas alternatives trade off voltage flexibility or package size for speed or feature set.
Availability
AD7466BRMZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered systems, medical instruments, and remote data acquisition requiring stable component supply and long-term manufacturability.
Supply support for AD7466BRMZ-REEL7 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 AD7466BRMZ-REEL7 belongs to the micropower SAR ADC family designed specifically for ultra-low-energy signal acquisition in portable, wearable, and energy-harvesting applications where supply voltage headroom and standby current are critical constraints.
FAQ
What is the minimum supply voltage supported by the AD7466BRMZ-REEL7?
The AD7466BRMZ-REEL7 operates down to 1.6 V, enabling direct interfacing with partially discharged lithium-based batteries or single-cell energy-harvesting storage elements. At 1.6 V and 100 kSPS, it consumes only 0.12 mW typical and maintains 70.5 dB SNR, making AD7466BRMZ-REEL7 ideal for deep-discharge battery operation where other 12-bit ADCs fail to function.
Does the AD7466BRMZ-REEL7 require an external reference voltage?
No, the AD7466BRMZ-REEL7 uses an internal reference derived from VDD, so the analog input range is always 0 V to VDD. This eliminates external reference components, reduces layout complexity, and ensures full-scale tracking with supply variations-key for AD7466BRMZ-REEL7 deployment in systems without regulated analog rails.
How does the AD7466BRMZ-REEL7 achieve its low power consumption?
The AD7466BRMZ-REEL7 achieves ultralow power via automatic power-down mode (8 nA typical) between conversions, scalable supply current that drops with lower throughput (e.g., 10 μA typ at 10 kSPS/1.8 V), and optimized SAR core design. At 100 kSPS and 1.6 V, AD7466BRMZ-REEL7 draws just 20 μA typical, resulting in 0.12 mW dissipation-enabling years of operation on coin cells.
What serial interface protocols is the AD7466BRMZ-REEL7 compatible with?
The AD7466BRMZ-REEL7 supports SPI, QSPI, MICROWIRE, and generic DSP serial interfaces via its CS, SCLK, and SDATA pins. It outputs 16-bit frames (4 leading zeros + 12-bit result) MSB-first on SCLK falling edges, requiring no mode configuration-ensuring plug-and-play integration with AD7466BRMZ-REEL7 on MCUs including ARM Cortex-M, TI MSP430, and Renesas RL78 families.
Is the AD7466BRMZ-REEL7 pin-compatible with other members of the AD7466/67/68 family?
Yes, AD7466BRMZ-REEL7 shares identical pinout and package (6-lead SOT-23) with AD7467 and AD7468 variants. All three use the same CS/SCLK/SDATA/VIN/VDD/GND mapping and timing model-allowing hardware reuse across 12-/10-/8-bit resolution tiers. Firmware must adjust data length handling (12 vs. 10 vs. 8 bits), but AD7466BRMZ-REEL7 PCB layout remains unchanged.
AD7466BRMZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- 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:
- Supply
- Voltage - Supply, Analog:
- 1.6V ~ 3.6V
- Voltage - Supply, Digital:
- 1.6V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7466BRMZ-REEL7 FAQ
1.How can I place an order for AD7466BRMZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7466BRMZ-REEL7 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 AD7466BRMZ-REEL7 reliable?
The price and inventory of AD7466BRMZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7466BRMZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7466BRMZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7466BRMZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7466BRMZ-REEL7?
AD7466BRMZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7466BRMZ-REEL7 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 AD7466BRMZ-REEL7?
For technical support, including AD7466BRMZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7466BRMZ-REEL7 requirements.
6.How does Aetrix verify that AD7466BRMZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7466BRMZ-REEL7 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 AD7466BRMZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7466BRMZ-REEL7?
All AD7466BRMZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7466BRMZ-REEL7, 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 AD7466BRMZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7466BRMZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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