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Analog Devices Inc. AD7467BRMZ
- Part No.:
- AD7467BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7467BRMZ.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,318
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Product details
Overview
AD7467BRMZ 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 0 to VDD analog input range - deployed in battery-powered medical sensors and remote data acquisition nodes.
For engineers reviewing the AD7467BRMZ datasheet, AD7467BRMZ pinout, AD7467BRMZ application, or AD7467BRMZ equivalent, this page delivers verified specifications, SOT-23 package mapping, functional role in low-voltage sampling systems, and validated alternative options for 10-bit SAR ADC replacement in space-constrained, ultra-low-power designs.
Technical Context
The AD7467BRMZ implements a standard successive approximation register (SAR) architecture with no pipeline delay, using CS to initiate sampling on its falling edge and synchronize conversion start. Its track-and-hold amplifier supports >3 MHz full-power bandwidth and acquires a full-scale step within 640 ns at VDD ≥ 1.8 V.
Conversion timing is fully controlled by external SCLK: 12 clock cycles define the maximum conversion time (3.52 μs at 3.4 MHz), and the serial output delivers 10-bit data MSB-first preceded by four leading zeros. Power-down mode reduces current to 0.1 μA max (8 nA typical), activated automatically after conversion completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC - delivers 1024 discrete digital codes over full-scale range. |
| Throughput Rate | 275 kSPS maximum - enables real-time sampling of signals up to ~137 kHz Nyquist frequency. |
| Supply Voltage Range | 1.6 V to 3.6 V - supports direct integration with single-cell Li-ion, NiMH, or coin-cell powered systems. |
| Power Dissipation (Normal Mode) | 0.63 mW max at 3 V/100 kSPS - enables continuous operation for months on small batteries. |
| INL / DNL | ±0.5 LSB max each - ensures monotonicity and <1 LSB linearity error across full temperature range. |
| SNR @ 30 kHz | 71 dB min at VDD ≥ 2.5 V - provides usable dynamic range for biomedical and sensor signal digitization. |
| Power-Down Current | 0.1 μA max (8 nA typical) - minimizes quiescent drain during idle intervals in duty-cycled systems. |
Pinout & Package
AD7467BRMZ is housed in a RoHS-compliant 6-lead SOT-23 package (2.9 mm × 1.6 mm × 1.15 mm body height), optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select (active-low) | Initiates sampling on falling edge and frames serial data transfer; controls conversion timing and power-down entry. |
| VDD | Power supply input | Single 1.6–3.6 V rail powers analog core, reference, and digital interface; also serves as internal ADC reference. |
| GND | Analog ground | Common return for analog circuitry; must be tied to system AGND with low-impedance path to minimize noise coupling. |
| VIN | Analog input | Single-ended input with 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching. |
| SDATA | Serial data output | Three-state CMOS output delivering 10-bit result MSB-first with four leading zeros; compatible with SPI read protocols. |
| SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports 10 kHz–3.4 MHz range with 40/60 duty cycle tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic latency (≤3.52 μs) critical for closed-loop control and time-triggered sampling. |
| Internal VDD reference | Eliminates external reference component and layout area; maintains 0–VDD input range across supply variation. |
| Automatic power-down | Reduces average current without software intervention - ideal for event-driven or burst-mode acquisition. |
| SPI/QSPI/MICROWIRE/DSP compatibility | Integrates seamlessly with common microcontrollers (e.g., ARM Cortex-M, MSP430) without protocol translation logic. |
| Guaranteed no missing codes | Ensures monotonic response across full 10-bit range - essential for precision measurement and feedback control. |
Applications
| Portable ECG Monitor | Wireless Sensor Node |
|---|---|
Use Scenario: Continuous analog front-end digitization of low-amplitude, low-frequency biopotential signals (0.05–100 Hz) in handheld ECG devices. IC Role / Device Role / Timing Role: Primary 10-bit SAR ADC acquiring conditioned lead signals with minimal power overhead and deterministic latency. Use Value: 71 dB SNR at 30 kHz and ±0.5 LSB INL enable accurate R-wave detection and ST-segment analysis under battery-limited conditions. | Use Scenario: Periodic sampling of temperature, humidity, and ambient light in battery-operated IoT endpoints transmitting via BLE or LoRa. IC Role / Device Role / Timing Role: Low-duty-cycle ADC triggered by MCU timer or interrupt, entering automatic power-down between conversions. Use Value: 8 nA typical shutdown current and 1.6 V minimum supply extend multi-year battery life in maintenance-free deployments. |
| Isolated Industrial Transmitter | Remote Data Logger |
Use Scenario: Digitizing 4–20 mA loop outputs or thermocouple signals in galvanically isolated field instruments with limited board space. IC Role / Device Role / Timing Role: Signal-chain ADC interfacing with isolated sigma-delta modulator or op-amp buffer; synchronized via isolated SPI. Use Value: SOT-23 footprint and 2.9 mm × 1.6 mm size allow placement adjacent to isolation barrier without compromising creepage/clearance. | Use Scenario: Long-term environmental monitoring in unattended locations (e.g., agriculture, infrastructure) powered by solar + supercapacitor. IC Role / Device Role / Timing Role: High-reliability ADC operating across −40°C to +85°C with stable DC accuracy and low drift over time. Use Value: ±0.2 LSB offset/gain error and guaranteed no missing codes ensure consistent calibration validity over 5+ years of field operation. |
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 |
|---|---|---|---|
| ADS7822UID | 8-pin SOIC; 10-bit; 200 kSPS; 2.7–5.25 V supply; external reference required. | Requires external voltage reference and larger PCB area; higher supply voltage limits use in sub-2 V systems. | Select when external reference precision or SOIC hand-soldering is preferred over ultra-low-voltage operation. |
| MAX11100ETE+ | 12-pin TDFN; 10-bit; 250 kSPS; 2.7–3.6 V supply; internal reference; SPI-compatible. | Higher minimum supply (2.7 V) excludes 1.8 V or coin-cell use; 3× larger footprint than SOT-23. | Select when higher SNR (72 dB) and integrated reference stability outweigh size and voltage constraints. |
Compared with ADS7822UID and MAX11100ETE+, AD7467BRMZ uniquely supports 1.6 V operation and fits in the smallest footprint (SOT-23), making it optimal for space- and energy-constrained designs where supply headroom is minimal and board area is premium.
Availability
AD7467BRMZ is available at Aetrix Electronics and suitable for battery-powered medical instruments, remote data acquisition systems, and isolated industrial transmitters requiring stable component supply across extended production lifecycles.
Supply support for AD7467BRMZ 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 AD7466/AD7467/AD7468 family was designed specifically for ultra-low-power, single-supply data acquisition in portable and energy-harvesting systems - emphasizing micropower operation, wide supply range, and minimal external component count.
FAQ
What is the maximum sampling rate supported by the AD7467BRMZ?
The AD7467BRMZ supports a maximum throughput rate of 275 kSPS, achieved with a 3.4 MHz SCLK and 12 serial clock cycles per conversion. At lower SCLK frequencies, the rate scales linearly - e.g., 1.7 MHz SCLK yields ~137 kSPS. This performance is guaranteed across the full −40°C to +85°C temperature range and 1.6 V to 3.6 V supply.
Does the AD7467BRMZ require an external voltage reference?
No, the AD7467BRMZ uses an internal reference derived from VDD, enabling a full-scale analog input range of 0 V to VDD without external components. This simplifies design, reduces BOM cost and board area, and maintains ratio-metric accuracy - though absolute accuracy depends on VDD stability and noise.
What package type is used for the AD7467BRMZ?
The AD7467BRMZ is supplied in a 6-lead SOT-23 package (RoHS-compliant, JEDEC MO-178AA). Its compact 2.9 mm × 1.6 mm footprint and low profile (1.15 mm max height) support high-density layouts and automated reflow assembly - distinct from the MSOP variant (AD7467ARMZ) which uses an 8-lead MSOP package.
How does the AD7467BRMZ manage power consumption during idle periods?
The AD7467BRMZ features automatic power-down: it enters ultra-low-current mode (0.1 μA max, 8 nA typical) immediately after conversion completes and SDATA goes high-impedance. No software command is needed - the transition occurs inherently via internal state machine, reducing average power in burst-mode or event-triggered systems.
Can the AD7467BRMZ interface directly with common microcontrollers?
Yes, the AD7467BRMZ provides SPI/QSPI/MICROWIRE/DSP-compatible serial interface with standard timing - CS active-low framing, SCLK-driven data output on falling edge, and MSB-first 10-bit word preceded by four leading zeros. It has been validated with ARM Cortex-M, Renesas RL78, and TI MSP430 families without level-shifting or protocol adaptation.
AD7467BRMZ 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:
- Active
- Number of Bits:
- 10
- 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:
- -
AD7467BRMZ FAQ
1.How can I place an order for AD7467BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7467BRMZ 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 AD7467BRMZ reliable?
The price and inventory of AD7467BRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7467BRMZ is usually 5 days.
3.What payment methods are accepted for AD7467BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7467BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7467BRMZ?
AD7467BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7467BRMZ 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 AD7467BRMZ?
For technical support, including AD7467BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7467BRMZ requirements.
6.How does Aetrix verify that AD7467BRMZ is sourced from the original manufacturer or authorized distributors?
All AD7467BRMZ 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 AD7467BRMZ meets industry standards.
7.What is the process for return or replacement of AD7467BRMZ?
All AD7467BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7467BRMZ, 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 AD7467BRMZ part is unused and in its original packaging.
Return procedure for AD7467BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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