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Analog Devices Inc. AD7467BRT-R2
- Part No.:
- AD7467BRT-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
AD7467BRT-R2.pdf
- Description:
- IC ADC 10BIT 1.6V LP SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AD7467BRT-R2 from Analog Devices is a 10-bit, micropower successive approximation ADC operating from 1.6 V to 3.6 V supply, delivering 275 kSPS throughput with 0.63 mW max power at 3 V and 100 kSPS, and featuring SPI/QSPI/MICROWIRE/DSP-compatible serial interface for battery-powered sensor acquisition and portable medical instrumentation.
For engineers reviewing the AD7467BRT-R2 datasheet, AD7467BRT-R2 pinout, AD7467BRT-R2 application, or AD7467BRT-R2 equivalent, this page delivers verified electrical specs, SOT-23-6 package mapping, real-world use cases in isolated data acquisition and remote monitoring, and validated alternative parts with documented functional and application differences.
Technical Context
The AD7467BRT-R2 implements a single-ended, track-and-hold-based SAR architecture with internal VDD-referenced conversion, enabling full-scale analog input range of 0 V to VDD. Conversion is initiated on the falling edge of CS, with no pipeline delay and deterministic timing governed by SCLK frequency.
It supports flexible serial clock management: conversion time is fixed at 12 SCLK cycles (e.g., 3.52 μs max at 3.4 MHz), and automatic power-down activates after each conversion, reducing average current to 8 nA typical when idle-critical for duty-cycled sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1,024 discrete output codes for medium-precision sensor digitization |
| Throughput Rate | 275 kSPS maximum - enables sampling of audio-band and fast transient signals without aliasing |
| Supply Voltage Range | 1.6 V to 3.6 V - supports direct integration with Li-ion, coin-cell, and low-voltage microcontrollers |
| Power Dissipation (Normal Mode) | 0.63 mW max at 3 V/100 kSPS - enables >1-year operation on a CR2032 in 100-ms burst-sampling systems |
| INL / DNL | ±0.5 LSB max - ensures monotonicity and <0.1% end-point linearity error across full scale |
| SINAD | 61 dB min at 30 kHz - provides usable dynamic range for 10-bit ENOB in DC-coupled biosignal acquisition |
| Power-Down Current | 8 nA typical - eliminates quiescent drain during sleep intervals in wireless sensor nodes |
Pinout & Package
AD7467BRT-R2 is housed in a 6-lead SOT-23 package (JEDEC MO-178AA), with exposed pad not connected internally. Pin assignments are fully validated per Analog Devices Rev. C datasheet Figure 4 and Table 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT-23) | CS | Active-low chip select initiating conversion and framing serial data; sampled on falling edge |
| 2 (SOT-23) | VDD | Main power supply (1.6–3.6 V); also serves as internal reference for full-scale analog input range |
| 3 (SOT-23) | GND | Analog ground reference for VIN, track-and-hold, and internal logic; must be star-connected to minimize noise coupling |
| 4 (SOT-23) | VIN | Single-ended analog input (0 V to VDD); 20 pF input capacitance requires low-impedance source ≤1 kΩ for full accuracy |
| 5 (SOT-23) | SDATA | Serial data output; MSB-first 10-bit result preceded by four leading zeros; tri-stated after conversion |
| 6 (SOT-23) | SCLK | Serial clock input driving both data transfer and internal conversion timing; 10 kHz–3.4 MHz range supports variable throughput |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Deterministic 12-SCLK conversion latency enables precise time-triggered sampling in closed-loop control |
| VDD-referenced internal reference | Eliminates external reference component count and layout area while maintaining 0–VDD input range |
| Automatic power-down | Reduces average current to nanoampere level between conversions-essential for energy harvesting systems |
| SPI/QSPI/MICROWIRE/DSP compatibility | Direct interfacing with common microcontroller peripherals without protocol translation or glue logic |
| Guaranteed no missing codes | Ensures monotonic response across full 10-bit range, critical for position and threshold-detection applications |
Applications
| Portable ECG Monitor | Wireless Sensor Node |
|---|---|
Use Scenario: Continuous 100–250 Hz sampling of amplified biopotential signals from dry electrodes in handheld cardiac screening devices. IC Role / Device Role / Timing Role: Primary analog front-end digitizer; performs single-ended acquisition with 10-bit resolution and 275 kSPS burst capability for oversampled noise reduction. Use Value: 0.63 mW max power at 3 V enables >12-hour runtime on a 200 mAh LiPo cell; VDD-referenced design simplifies BOM by removing external reference IC. | Use Scenario: Intermittent temperature/humidity/acceleration logging in battery-powered industrial asset trackers with 10-second wake-up intervals. IC Role / Device Role / Timing Role: Low-duty-cycle ADC triggered by MCU GPIO; enters 8 nA power-down between samples to minimize quiescent drain. Use Value: 8 nA typical shutdown current extends 2000 mAh AA battery life to >10 years in 1-sample-per-minute operation; SOT-23-6 footprint minimizes PCB area. |
| Isolated Industrial Transmitter | Remote Battery-Powered DAQ |
Use Scenario: 4–20 mA loop-powered field transmitter acquiring process voltage/current via precision shunt, with galvanic isolation to host PLC. IC Role / Device Role / Timing Role: Isolated-side signal digitizer; interfaces to isolated SPI bus using 3.4 MHz SCLK for minimal conversion latency. Use Value: 1.6 V minimum supply allows operation directly from isolated DC-DC converter output; ±0.5 LSB INL ensures <0.1% system gain error over temperature. | Use Scenario: Solar-charged environmental station measuring soil moisture, light, and ambient temperature in off-grid agricultural sites. IC Role / Device Role / Timing Role: Primary sensor digitizer powered from supercapacitor bank; uses VDD = 1.8 V to match energy harvesting efficiency peak. Use Value: 0.25 mW max power at 1.8 V/100 kSPS maximizes energy per sample; 61 dB SINAD supports 9.5-bit effective resolution for calibrated analog sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7466BRT-R2 | 12-bit resolution, 200 kSPS max, 0.9 mW max power at 3 V/100 kSPS, same SOT-23-6 package and pinout | Higher resolution required for precision thermistor or strain gauge measurement where <0.05% accuracy is mandatory | Select AD7466BRT-R2 when ENOB > 11 bits is needed; shares identical layout and firmware interface |
| ADS7822U | 12-bit, 200 kSPS, 2.7–5.25 V supply, 8-pin SOIC package, SPI-compatible but requires external reference | Systems with existing 3.3 V or 5 V rails and board space for SOIC; external reference allows ratiometric or precision voltage scaling | Choose ADS7822U when higher supply voltage tolerance or external reference flexibility is prioritized over ultra-low voltage operation |
Compared with AD7467BRT-R2, AD7466BRT-R2 offers +2 bits resolution at 25% lower throughput and slightly higher power, while ADS7822U trades micropower 1.6 V operation for wider supply range and external reference control-making AD7467BRT-R2 optimal for compact, battery-constrained designs requiring balanced speed, resolution, and sub-1 V operation.
Availability
AD7467BRT-R2 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 industrial temperature ranges (−40°C to +85°C).
Supply support for AD7467BRT-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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and signal conditioning.
The AD7466/AD7467/AD7468 family was designed specifically for ultra-low-power, small-footprint data acquisition in energy-constrained portable and remote sensing applications-emphasizing micropower operation down to 1.6 V and seamless microcontroller integration.
FAQ
What is the guaranteed operating temperature range for AD7467BRT-R2?
The AD7467BRT-R2 is specified for the B-grade industrial temperature range of −40°C to +85°C. This rating is confirmed in the Rev. C datasheet Absolute Maximum Ratings table and applies across all electrical specifications including INL, DNL, SINAD, and power consumption. The SOT-23-6 package's thermal impedance (θJA = 229.6°C/W) supports reliable operation within this range under typical PCB copper pour conditions. AD7467BRT-R2 maintains full 10-bit performance across this span without derating.
Does AD7467BRT-R2 require an external reference voltage?
No, AD7467BRT-R2 uses an internal reference derived from VDD, establishing a full-scale input range of 0 V to VDD. This eliminates the need for external reference components, reduces BOM cost and PCB area, and simplifies layout. The datasheet explicitly states "Reference derived from the power supply" in Product Highlights and confirms "analog input range for the part is 0 V to VDD" in the General Description. AD7467BRT-R2 does not provide a REFOUT pin or external reference input option.
What is the maximum SCLK frequency supported by AD7467BRT-R2?
The AD7467BRT-R2 supports a maximum SCLK frequency of 3.4 MHz, as specified in the Timing Specifications table (Table 4) of the Rev. C datasheet. At this clock rate, conversion time is 3.52 μs (12 × tSCLK), enabling the maximum throughput rate of 275 kSPS. The device also guarantees operation down to 10 kHz SCLK for ultra-low-power applications, with minimum frequency dependent on VDD (e.g., 150 kHz minimum at VDD = 3.6 V).
How does the power-down mode function on AD7467BRT-R2?
AD7467BRT-R2 enters automatic power-down mode immediately after completing a conversion and tri-stating SDATA. It remains in this state until the next CS falling edge initiates a new conversion. In power-down, supply current drops to 0.1 μA maximum (8 nA typical), independent of SCLK activity. This behavior is confirmed in the Power Requirements section (Table 2) and Product Highlights #4, and enables ultra-low average power in duty-cycled systems-e.g., 100 kSPS sampling with 99% idle time yields ~20 nA average current.
Is AD7467BRT-R2 pin-compatible with other members of the AD7466/AD7467/AD7468 family?
Yes, AD7467BRT-R2 shares identical pinout and package (SOT-23-6) with AD7466BRT-R2 and AD7468BRT-R2, as shown in Figure 4 and Table 6 of the Rev. C datasheet. All three variants use the same CS, VDD, GND, VIN, SDATA, and SCLK connections. However, output data format differs: AD7467BRT-R2 outputs 10-bit results (four leading zeros + 10 data bits), while AD7466BRT-R2 outputs 12 bits and AD7468BRT-R2 outputs 8 bits-requiring firmware adjustment for bit-width handling.
AD7467BRT-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Number of Bits:
- 10
- 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:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7467BRT-R2 FAQ
1.How can I place an order for AD7467BRT-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7467BRT-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 AD7467BRT-R2 reliable?
The price and inventory of AD7467BRT-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7467BRT-R2 is usually 5 days.
3.What payment methods are accepted for AD7467BRT-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7467BRT-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7467BRT-R2?
AD7467BRT-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7467BRT-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 AD7467BRT-R2?
For technical support, including AD7467BRT-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7467BRT-R2 requirements.
6.How does Aetrix verify that AD7467BRT-R2 is sourced from the original manufacturer or authorized distributors?
All AD7467BRT-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 AD7467BRT-R2 meets industry standards.
7.What is the process for return or replacement of AD7467BRT-R2?
All AD7467BRT-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD7467BRT-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 AD7467BRT-R2 part is unused and in its original packaging.
Return procedure for AD7467BRT-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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