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Analog Devices Inc. AD7466BRTZ-R2
- Part No.:
- AD7466BRTZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
AD7466BRTZ-R2.pdf
- Description:
- IC ADC 12BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,324
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Product details
Overview
AD7466BRTZ-R2 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 power consumption at 1.6 V/100 kSPS. It features single-ended analog input (0 V to VDD), SPI/QSPI/MICROWIRE-compatible serial interface, and automatic power-down consuming 8 nA typical.
For engineers reviewing the AD7466BRTZ-R2 datasheet, AD7466BRTZ-R2 pinout, AD7466BRTZ-R2 application, or AD7466BRTZ-R2 equivalent, this page provides verified technical context, real-world design meaning for key specs, validated SOT-23 pin functions, confirmed low-voltage operation constraints, and two rigorously cross-checked alternative parts for battery-powered and isolated data acquisition systems.
Technical Context
The AD7466BRTZ-R2 implements a standard successive approximation register (SAR) architecture with internal track-and-hold, no pipeline delay, and reference derived directly from VDD-enabling full-scale analog input range of 0 V to VDD. Conversion is initiated on the falling edge of CS and synchronized to SCLK, requiring exactly 16 clock cycles per conversion.
Its digital interface supports SPI/QSPI/MICROWIRE/DSP protocols with MSB-first output format: four leading zeros followed by 12-bit straight binary data. Power management is tightly coupled to serial clock activity-automatic power-down engages after each conversion, reducing average current to 8 nA typical when idle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 1 LSB = VDD/4096 quantization step, enabling precise measurement of small analog signals in low-voltage systems. |
| Throughput Rate | 200 kSPS maximum - supports real-time sampling of signals up to ~30 kHz bandwidth without aliasing in high-speed portable instrumentation. |
| SINAD | 69 dB min at 30 kHz (1.8–2.0 V), 70 dB min at 2.5–3.6 V - defines usable dynamic range for sensor signal digitization under common battery voltages. |
| Power Dissipation | 0.9 mW max at 3 V/100 kSPS - enables continuous operation in coin-cell-powered devices with multi-day battery life. |
| Supply Range | 1.6 V to 3.6 V - compatible with single Li-ion, Li-polymer, or dual alkaline cells without regulation overhead. |
| Power-Down Current | 8 nA typical - reduces quiescent load to negligible levels during sleep intervals in duty-cycled remote sensors. |
| Input Range | 0 V to VDD - eliminates need for external level-shifting or reference buffers when interfacing with rail-to-rail analog front-ends. |
Pinout & Package
AD7466BRTZ-R2 is housed in a 6-lead SOT-23 package (JEDEC MO-178AA), footprint-compatible with industry-standard 0.95 mm pitch SOT-23 layouts and suitable for high-density PCBs in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low control initiating conversion and framing serial data; sampled on falling edge to trigger sample-and-hold acquisition. |
| VDD | Power Supply | Single 1.6–3.6 V supply powering analog core, digital logic, and internal reference-no external reference required. |
| GND | Analog Ground | Common return for all analog circuitry; must be connected to low-impedance system ground to maintain DC accuracy and SNR. |
| VIN | Analog Input | Single-ended input accepting 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching for settling. |
| SDATA | Serial Data Output | Three-state CMOS output delivering 16-bit frame (4 zeros + 12-bit result) MSB-first on SCLK falling edges. |
| SCLK | Serial Clock | Asynchronous input controlling both data transfer timing and internal conversion clock; max 3.4 MHz, min 10–150 kHz depending on VDD. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 0.12 mW typical at 1.6 V/100 kSPS enables >1-year operation on CR2032 batteries in 100-ms burst-sampling applications. |
| No Pipeline Delay | Deterministic 4.7 μs conversion time (16 × tSCLK) allows precise timing-critical sampling in closed-loop control feedback paths. |
| VDD-Referenced ADC | Eliminates external voltage reference component and associated BOM cost, layout area, and thermal drift error sources. |
| Flexible Serial Interface | Native compatibility with SPI, QSPI, MICROWIRE, and DSP host controllers simplifies firmware integration across microcontroller families. |
| Automatic Power-Down | Hardware-triggered shutdown after conversion reduces average current by >99.9% versus active mode-critical for energy harvesting nodes. |
Applications
| Battery-Powered Medical Sensors | Remote Industrial Monitoring |
|---|---|
Use Scenario: Continuous ECG lead-off detection and analog front-end digitization in wearable patch monitors powered by single 3.0 V coin cell. IC Role / Device Role / Timing Role: Primary 12-bit ADC acquiring biopotential signals at 250 Hz with <±1 LSB INL, using VDD as reference to minimize component count. Use Value: 0.12 mW power at 1.6 V extends battery life beyond 14 days while maintaining diagnostic-grade linearity and noise floor. |
Use Scenario: Wireless temperature/humidity node deployed in oil-field equipment, sampling every 5 seconds via LoRaWAN uplink. IC Role / Device Role / Timing Role: Low-voltage SAR ADC converting conditioned sensor outputs with deterministic 4.7 μs conversion window for predictable MCU wake-up scheduling. Use Value: 8 nA power-down current ensures <1 μA average system draw, enabling 5+ year deployment on primary lithium thionyl chloride cells. |
| Isolated Sensor Signal Conditioning | Portable Diagnostic Instrumentation |
Use Scenario: Isolated current sensing in motor drives, where ADC resides on high-side domain powered by isolated DC-DC converter. IC Role / Device Role / Timing Role: Single-supply 12-bit converter interfacing to optocoupled or capacitive isolators, leveraging VDD-referenced input to avoid floating reference generation. Use Value: 1.6 V minimum supply allows direct use of low-noise isolated 1.8 V rails, reducing isolation barrier complexity and EMI susceptibility. |
Use Scenario: Handheld blood glucose meter requiring rapid, accurate strip electrochemical signal digitization within strict 10-second test window. IC Role / Device Role / Timing Role: High-SNR ADC capturing transient amperometric pulses with 69 dB SINAD at 30 kHz, supporting fast calibration algorithms. Use Value: 200 kSPS throughput enables oversampling and digital filtering to resolve sub-mV signal variations despite low 1.6 V supply headroom. |
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, SPI interface, 1.25 mW at 3 V - lacks 1.6 V operation and 8 nA power-down. | Requires LDO for 1.6–2.6 V battery inputs; unsuitable for ultra-low-power sleep modes in energy harvesting. | Select ADS7822U only if system uses regulated 3 V+ rails and prioritizes higher SNR (72 dB) over micropower operation. |
| MAX11100ETE+ | 12-bit, 500 kSPS, 2.7–3.6 V supply, SPI, 1.8 mW at 3 V - wider bandwidth but no sub-2 V support or nanoamp power-down. | Incompatible with direct connection to 1.6–2.2 V primary batteries; higher noise floor limits resolution in low-level sensor interfaces. | Choose MAX11100ETE+ when sampling >100 kHz signals and system has stable 3 V supply with thermal margin for 1.8 mW dissipation. |
Compared with ADS7822U and MAX11100ETE+, AD7466BRTZ-R2 uniquely supports true 1.6 V operation and 8 nA power-down-making it the only viable option for direct battery-connected, multi-year-life portable medical and industrial sensors.
Availability
AD7466BRTZ-R2 is available at Aetrix Electronics and suitable for battery-powered medical sensors, remote industrial monitoring, isolated sensor signal conditioning, and portable diagnostic instrumentation requiring stable component supply across extended product lifecycles.
Supply support for AD7466BRTZ-R2 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, serving precision instrumentation, industrial automation, and healthcare markets since 1965.
AD7466BRTZ-R2 belongs to Analog Devices' micropower SAR ADC family designed specifically for ultra-low-voltage, long-life portable and remote sensing applications where supply flexibility and nanowatt idle power are critical system requirements.
FAQ
What is the minimum supply voltage supported by the AD7466BRTZ-R2?
The AD7466BRTZ-R2 operates down to 1.6 V, enabling direct interface with partially discharged lithium coin cells or single-cell alkaline batteries without regulation. At 1.6 V, it maintains 12-bit resolution, 200 kSPS throughput, and 70.5 dB typical SNR-verified in Table 1 of Rev. C datasheet under "DYNAMIC PERFORMANCE" at VDD = 1.6 V.
Does the AD7466BRTZ-R2 require an external voltage reference?
No, the AD7466BRTZ-R2 uses an internal VDD-referenced architecture, so its full-scale analog input range is 0 V to VDD. This eliminates the need for external reference components, reducing BOM cost, PCB area, and thermal drift errors-confirmed in the "GENERAL DESCRIPTION" and "PRODUCT HIGHLIGHTS" sections of the datasheet.
What is the conversion time and serial interface timing for the AD7466BRTZ-R2?
The AD7466BRTZ-R2 requires exactly 16 SCLK cycles for conversion, resulting in 4.70 μs maximum conversion time at 3.4 MHz SCLK. Its SPI-compatible interface outputs 16-bit frames (4 leading zeros + 12-bit result) MSB-first on SCLK falling edges-detailed in Table 1 ("CONVERSION RATE") and Figure 3 timing diagram of the Rev. C datasheet.
How does the power-down mode function on the AD7466BRTZ-R2?
The AD7466BRTZ-R2 enters automatic power-down after each conversion completes, drawing just 8 nA typical current regardless of SCLK state. This feature is hardware-controlled and requires no software command-specified in "POWER REQUIREMENTS" (Table 1) and "PRODUCT HIGHLIGHTS" #4 of the Rev. C datasheet.
Which package type is used for the AD7466BRTZ-R2?
The AD7466BRTZ-R2 uses a 6-lead SOT-23 package (JEDEC MO-178AA), as indicated by the "RTZ" suffix in the part number and confirmed in Figure 4 and "ORDERING GUIDE" of the Rev. C datasheet. Pinout matches standard SOT-23 orientation with CS, VDD, GND, VIN, SDATA, and SCLK assigned to pins 1–6 respectively.
AD7466BRTZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7466BRTZ-R2 FAQ
1.How can I place an order for AD7466BRTZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7466BRTZ-R2 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 AD7466BRTZ-R2 reliable?
The price and inventory of AD7466BRTZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7466BRTZ-R2 is usually 5 days.
3.What payment methods are accepted for AD7466BRTZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7466BRTZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7466BRTZ-R2?
AD7466BRTZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7466BRTZ-R2 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 AD7466BRTZ-R2?
For technical support, including AD7466BRTZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7466BRTZ-R2 requirements.
6.How does Aetrix verify that AD7466BRTZ-R2 is sourced from the original manufacturer or authorized distributors?
All AD7466BRTZ-R2 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 AD7466BRTZ-R2 meets industry standards.
7.What is the process for return or replacement of AD7466BRTZ-R2?
All AD7466BRTZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD7466BRTZ-R2, 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 AD7466BRTZ-R2 part is unused and in its original packaging.
Return procedure for AD7466BRTZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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