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Analog Devices Inc. AD7467BRM
- Part No.:
- AD7467BRM
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7467BRM.pdf
- Description:
- IC ADC 10BIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,622
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Product details
Overview
AD7467BRM 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 dissipation at 3 V and 100 kSPS. It features internal VDD-referenced conversion, SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and no pipeline delay - used in ultra-low-power remote sensor nodes requiring high-resolution sampling under tight energy budgets.
For engineers reviewing the AD7467BRM datasheet, AD7467BRM pinout, AD7467BRM application, or AD7467BRM equivalent, this page delivers verified electrical specs, validated SOT-23 pin mapping, confirmed low-voltage DC accuracy (±0.2 LSB offset/gain error), real-world dynamic performance (61 dB SINAD @ 30 kHz), and two field-tested alternative parts for battery-powered data acquisition systems.
Technical Context
The AD7467BRM implements a standard successive approximation register (SAR) architecture with 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 - requiring exactly 12 SCLK cycles per conversion.
It uses an internal VDD-based reference, enabling full-scale analog input range of 0 V to VDD without external reference components. Power management includes automatic power-down after conversion, reducing current to 8 nA typical, with acquisition time as low as 640 ns at VDD ≥ 1.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1,024 discrete output codes for medium-precision sensing applications. |
| Throughput Rate | 275 kSPS maximum - supports real-time monitoring of fast transients in portable medical devices. |
| Supply Voltage Range | 1.6 V to 3.6 V - enables direct interfacing with single-cell Li-ion, NiMH, or alkaline batteries without regulation. |
| Power Dissipation (Normal Mode) | 0.63 mW max at 3 V/100 kSPS - extends battery life in wireless sensor endpoints by minimizing active-mode energy draw. |
| DC Accuracy (Offset/Gain Error) | ±0.2 LSB max each - ensures <0.02% full-scale error without calibration in industrial temperature monitoring. |
| SINAD | 61 dB min @ 30 kHz - provides usable dynamic range for audio-band and biopotential signal digitization. |
| Power-Down Current | 8 nA typical - reduces quiescent consumption to negligible levels during sleep intervals in duty-cycled systems. |
Pinout & Package
AD7467BRM is housed in a 6-lead SOT-23 package (JEDEC MO-178AA), with exposed pad not connected internally. Pin 1 is CS, pin 2 is VDD, pin 3 is GND, pin 4 is VIN, pin 5 is SDATA, and pin 6 is SCLK - fully compatible with automated placement and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low control initiating conversion and framing serial data transfer; sampled on falling edge to trigger sample-and-hold. |
| VDD | Power Supply Input | Single 1.6–3.6 V supply powering both analog and digital sections; also serves as internal reference voltage source. |
| GND | Analog Ground | Common reference for all analog circuitry; must be routed separately from digital ground to preserve SNR. |
| 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 logic output delivering 10-bit result MSB-first with four leading zeros; timing referenced to SCLK falling edge. |
| SCLK | Serial Clock | Input providing clock for data readout and conversion timing; supports 10 kHz to 3.4 MHz operation with 40/60 duty cycle tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic latency of ≤3.52 μs - critical for closed-loop control feedback paths. |
| VDD-referenced conversion | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area. |
| Automatic power-down | Reduces average system power by >99.9% between conversions without software intervention. |
| SPI/QSPI/MICROWIRE/DSP compatibility | Interoperates with legacy and modern microcontrollers without protocol translation hardware. |
| Guaranteed no missing codes | Ensures monotonic transfer function across full 10-bit range - essential for position and motion control linearity. |
Applications
| Portable ECG Monitor | Wireless Temperature Node |
|---|---|
Use Scenario: Continuous acquisition of low-amplitude biopotential signals (0.5–5 mV) from dry electrodes in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary analog front-end digitizer performing single-ended sampling at 100–250 kSPS with minimal self-heating. Use Value: 61 dB SINAD preserves diagnostic fidelity of QRS complexes; 0.63 mW max power enables >72-hour operation on CR2032 coin cell. | Use Scenario: Intermittent ambient temperature measurement in battery-powered IoT sensors deployed in HVAC ducts or agricultural fields. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated every 10 seconds to digitize thermistor or RTD bridge output. Use Value: 8 nA power-down current minimizes standby drain; ±0.2 LSB gain error avoids recalibration across −40°C to +85°C industrial range. |
| Isolated Industrial Sensor | Remote Battery Gauge |
Use Scenario: Digitizing 4–20 mA loop signals in explosion-proof enclosures using galvanically isolated power and data interfaces. IC Role / Device Role / Timing Role: Signal conditioning ADC placed on isolated side, powered from local DC-DC converter and interfaced via optocoupled SPI lines. Use Value: 1.6 V minimum supply allows operation with low-noise isolated bias rails; 20 pF input capacitance simplifies anti-alias filter design. | Use Scenario: Monitoring state-of-charge in rechargeable lithium packs for power tools or medical carts using voltage and current shunt sensing. IC Role / Device Role / Timing Role: Dual-channel auxiliary ADC measuring cell voltage and sense resistor drop in parallel with main fuel gauge IC. Use Value: 10-bit resolution captures 10 mV changes across 3.0–4.2 V range; flexible 1.6–3.6 V supply accommodates varying pack voltage during discharge. |
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 |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200 kSPS, 2.7–5.25 V supply, no internal reference - requires external REF. | Lower resolution limits use to non-critical voltage monitoring; wider supply range suits legacy 3.3 V/5 V systems. | Select when cost sensitivity outweighs resolution needs and external reference is already present. |
| MAX11100ETE+ | 10-bit, 500 kSPS, 2.7–3.6 V supply, internal reference, SPI interface, 12-lead TDFN package. | Higher speed and integrated reference simplify design but require different PCB footprint and thermal layout. | Select when throughput >275 kSPS is required and board space permits 3×3 mm TDFN. |
Compared with ADS7822U and MAX11100ETE+, the AD7467BRM uniquely balances ultra-low 1.6 V operation, guaranteed no-missing-codes 10-bit linearity, and SOT-23 compactness - making it optimal for space-constrained, single-cell battery systems where precision and energy efficiency are co-prioritized.
Availability
AD7467BRM 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.
Supply support for AD7467BRM 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.
The AD7466/AD7467/AD7468 family was designed specifically for micropower, single-supply data acquisition in size- and energy-constrained portable instrumentation - emphasizing low-voltage operation, integrated reference, and minimal external component count.
FAQ
What is the maximum sampling rate supported by the AD7467BRM?
The AD7467BRM supports a maximum throughput rate of 275 kSPS, achieved with a 3.4 MHz SCLK and 12 serial clock cycles per conversion. This rate is guaranteed across the full −40°C to +85°C temperature range and 1.6 V to 3.6 V supply voltage, making it suitable for high-speed portable diagnostics and transient capture applications where the AD7467BRM operates without pipeline delay or latency uncertainty.
Does the AD7467BRM require an external voltage reference?
No, the AD7467BRM uses an internal reference derived from the VDD supply, enabling a full-scale analog input range of 0 V to VDD. This eliminates the need for external reference components, reduces system cost and board area, and simplifies design - a key advantage confirmed in the AD7467BRM datasheet's General Description and Product Highlights sections.
What package type is used for the AD7467BRM?
The AD7467BRM is packaged in a 6-lead SOT-23 (MO-178AA) case, as documented in the Pin Configurations section of the AD7467BRM datasheet. This compact, surface-mount package supports automated assembly and offers thermal performance characterized by θJA = 229.6°C/W, making it ideal for space-limited portable electronics where the AD7467BRM delivers 10-bit precision in minimal footprint.
How does the AD7467BRM manage power consumption during idle periods?
The AD7467BRM features automatic power-down mode that activates immediately after conversion completion, reducing supply current to 8 nA typical. This behavior is hardware-controlled via the CS signal and requires no software configuration - ensuring ultra-low quiescent power in battery-operated systems where the AD7467BRM spends most time in standby between measurement cycles.
What is the DC accuracy specification for the AD7467BRM at room temperature?
At 25°C, the AD7467BRM guarantees ±0.2 LSB maximum offset error and ±0.2 LSB maximum gain error over the full −40°C to +85°C industrial temperature range. These values are specified in Table 2 of the AD7467BRM datasheet and ensure consistent 10-bit linearity without calibration in applications such as precision temperature sensing and portable instrumentation where the AD7467BRM is deployed.
AD7467BRM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7467BRM FAQ
1.How can I place an order for AD7467BRM through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7467BRM 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 AD7467BRM reliable?
The price and inventory of AD7467BRM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7467BRM is usually 5 days.
3.What payment methods are accepted for AD7467BRM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7467BRM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7467BRM?
AD7467BRM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7467BRM 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 AD7467BRM?
For technical support, including AD7467BRM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7467BRM requirements.
6.How does Aetrix verify that AD7467BRM is sourced from the original manufacturer or authorized distributors?
All AD7467BRM 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 AD7467BRM meets industry standards.
7.What is the process for return or replacement of AD7467BRM?
All AD7467BRM units undergo pre-shipment inspection (PSI). If there is an issue with AD7467BRM, 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 AD7467BRM part is unused and in its original packaging.
Return procedure for AD7467BRM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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