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Analog Devices Inc. AD7274BRMZ-REEL
- Part No.:
- AD7274BRMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7274BRMZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:961
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Product details
Overview
AD7274BRMZ-REEL from Analog Devices is a 12-bit, 3 MSPS successive approximation ADC with single-supply operation (2.35 V to 3.6 V), 70 dB SNR at 1 MHz input, and 8-lead TSOT package. It features no pipeline delay, external reference support (1.4 V to VDD), and operates across −40°C to +125°C for high-reliability data acquisition in industrial sensor interfaces.
For engineers reviewing the AD7274BRMZ-REEL datasheet, AD7274BRMZ-REEL pinout, AD7274BRMZ-REEL application, or AD7274BRMZ-REEL equivalent, this page delivers verified electrical specs, real-world timing behavior, thermal performance under full-power operation, and validated alternative options for precision analog-to-digital conversion in space-constrained, wide-temperature designs.
Technical Context
The AD7274BRMZ-REEL implements a charge redistribution DAC-based successive approximation architecture with on-chip track-and-hold, enabling accurate sampling of input frequencies up to 55 MHz (−3 dB) and 8 MHz (−0.1 dB). Conversion is initiated by the falling edge of CS and clocked by SCLK, with 14-cycle serial readout at up to 48 MHz.
It supports flexible power management via three operational modes: normal (3.8 mA typ at 3 V), partial power-down (34 μA typ), and full power-down (0.1 μA typ). Reference voltage is externally applied (1.4 V to VDD), and analog input range is 0 to VREF with ±1 μA leakage (−40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic output and no missing codes across full temperature range. |
| Throughput Rate | 3 MSPS - enables real-time sampling of signals up to ~1.5 MHz Nyquist bandwidth. |
| SNR @ 1 MHz | 69.5 dB min - supports >11.2 ENOB for high-fidelity signal digitization in noise-sensitive applications. |
| Power Consumption | 11.4 mW typ at 3 V / 3 MSPS - enables battery-operated or thermally constrained embedded systems. |
| Input Bandwidth | 55 MHz (−3 dB) - accommodates wideband sensor outputs and RF IF sampling without external amplification. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and downhole sensing. |
| Reference Range | 1.4 V to VDD - allows scalable dynamic range tuning and compatibility with common LDOs or bandgap references. |
| Aperture Jitter | 18 ps typ - limits sampling uncertainty to <0.03 LSB at 12-bit resolution for high-frequency inputs. |
Pinout & Package
AD7274BRMZ-REEL is housed in an 8-lead TSOT (Thin Small Outline Transistor) package, measuring 3.0 mm × 3.0 mm × 0.8 mm, with exposed pad for thermal enhancement and RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Single 2.35–3.6 V rail powers both analog and digital sections; requires local 100 nF + 10 μF decoupling to AGND. |
| SDATA (Pin 2) | Serial data output | Three-state CMOS output delivering MSB-first 12-bit result prefixed by two zeros and suffixed by two zeros; compatible with SPI/QSPI/MICROWIRE. |
| CS (Pin 7) | Chip select / conversion trigger | Active-low signal initiates sampling on falling edge and frames serial data transfer; minimum pulse width 3 ns. |
| AGND (Pin 8) | Analog ground reference | Primary return path for VIN, VREF, and internal analog circuitry; must be tied to low-impedance plane, separated from DGND except at single point. |
| VREF (Pin 5) | External reference input | Accepts 1.4–VDD reference voltage; requires 10 μF capacitor to AGND to stabilize reference impedance and suppress noise coupling. |
| SCLK (Pin 6) | Serial clock input | Drives both data readout and internal conversion timing; supports 500 kHz–48 MHz; 40/60 duty cycle tolerance. |
| DGND (Pin 3) | Digital ground reference | Return path for SDATA, CS, and SCLK; must remain within 0.3 V of AGND potential even during transients to prevent latch-up. |
| VIN (Pin 4) | Analog input channel | Single-ended input with 0–VREF range, 42 pF track capacitance, and ±1 μA leakage; optimized for direct connection to low-Z sensors or op-amp buffers. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic latency of exactly 291 ns max per conversion - critical for closed-loop control and time-triggered systems. |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility eliminates protocol translation logic and reduces FPGA resource usage. |
| Wide supply range | 2.35–3.6 V operation supports direct interfacing with Li-ion battery rails, 2.5 V/3.3 V microcontrollers, and mixed-voltage SoCs. |
| Low power-down current | 0.1 μA typical full power-down current extends battery life in intermittent-sampling applications like condition monitoring nodes. |
| High-temperature grade | Specified performance over −40°C to +125°C ensures reliability in engine control units, power inverters, and industrial PLC modules. |
| External reference flexibility | VREF range of 1.4 V to VDD permits use of precision references (e.g., ADR4525) or simplified resistor-divider networks for cost-sensitive designs. |
Applications
| Industrial Sensor Interface | Motor Control Feedback |
|---|---|
|
Use Scenario: Digitizing outputs from RTDs, strain gauges, and current-sense amplifiers in programmable logic controllers and distributed I/O modules. IC Role / Device Role / Timing Role: High-speed, low-latency ADC capturing analog feedback at 3 MSPS with precise timing alignment to PWM cycles. Use Value: 12-bit resolution and 69.5 dB SNR enable sub-0.1% measurement accuracy across temperature extremes without calibration drift compensation. |
Use Scenario: Sampling phase currents and DC bus voltage in three-phase inverter drives for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Synchronized analog acquisition triggered by PWM dead-time logic via CS input, ensuring deterministic sampling windows. Use Value: 291 ns max conversion time and no pipeline delay allow tight loop closure at >20 kHz switching frequencies with minimal phase lag. |
| Automotive Battery Monitoring | Portable Medical Instrumentation |
|
Use Scenario: Measuring cell voltages and pack temperature in 12–48 V EV battery management systems (BMS) operating under under-hood conditions. IC Role / Device Role / Timing Role: Precision ADC with −40°C to +125°C rating and low power-down current for periodic cell balancing and health diagnostics. Use Value: Full-grade temperature specification and 0.1 μA power-down current reduce thermal design burden and extend standby runtime between wake-ups. |
Use Scenario: Capturing ECG, EEG, or pressure waveforms in handheld diagnostic devices requiring compact size and low power consumption. IC Role / Device Role / Timing Role: Low-noise, low-power ADC interfaced directly to instrumentation amplifiers, minimizing external component count. Use Value: 70 dB SNR at 1 MHz and 11.4 mW operational power enable clinical-grade signal fidelity while meeting portable device battery life targets. |
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 |
|---|---|---|---|
| AD7274BCPZ-RL7 | Same die, 8-lead LFCSP (3 mm × 3 mm) instead of TSOT; lower θJA (125°C/W vs. 230°C/W); identical electrical specs. | Better thermal performance in high-density PCBs; requires rework of land pattern and stencil; not drop-in compatible. | Select when board-level thermal resistance exceeds 100°C/W or ambient exceeds 105°C; verify solder paste volume for exposed pad. |
| ADS8860IDRCT | 16-bit, 1 MSPS SAR ADC; higher resolution but lower speed; 2.5–5.5 V supply; SPI-compatible; 0.5 μA power-down. | Targeted at precision DC/low-frequency measurements (e.g., weigh scales, analytical instruments); not suitable for >1 MSPS real-time control. | Choose only if resolution >12 bits is mandatory and throughput ≤1 MSPS suffices; avoid for closed-loop or wideband applications. |
Compared with AD7274BRMZ-REEL, AD7274BCPZ-RL7 offers superior thermal dissipation in thermally constrained layouts but requires PCB redesign, while ADS8860IDRCT trades speed for resolution-making it unsuitable for 3 MSPS timing-critical systems despite its higher bit depth.
Availability
AD7274BRMZ-REEL is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control feedback loops, and automotive battery monitoring systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD7274BRMZ-REEL 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 industrial, automotive, communications, and healthcare markets since 1965.
The AD7273/AD7274 product line delivers high-speed, low-power SAR ADCs in ultra-small packages for space-constrained, wide-temperature applications where deterministic latency and minimal external components are critical.
FAQ
What is the maximum sampling frequency supported by the AD7274BRMZ-REEL?
The AD7274BRMZ-REEL supports a maximum throughput rate of 3 MSPS, achieved with a 48 MHz SCLK and 14-cycle serial readout. This corresponds to a minimum conversion period of 333 ns, including acquisition time (60 ns max) and quiet time (4 ns min). The part maintains full AC performance specifications-including 69.5 dB SNR-at this rate when operated within its specified supply (2.35–3.6 V) and temperature (−40°C to +125°C) ranges. The AD7274BRMZ-REEL does not support oversampling or decimation modes.
Does the AD7274BRMZ-REEL require an external reference, and what voltage range is acceptable?
Yes, the AD7274BRMZ-REEL requires an external reference applied to the VREF pin. The acceptable input range is 1.4 V to VDD, supporting flexible scaling of the analog input range (0 to VREF). For example, with VDD = 3.3 V, VREF may be set to 2.5 V for improved noise immunity or to 3.0 V for maximum dynamic range. A 10 μF capacitor must be placed between VREF and AGND to ensure stability and low-impedance reference coupling. The AD7274BRMZ-REEL does not include an internal reference.
How is conversion triggered, and what is the latency from trigger to data ready?
Conversion is triggered on the falling edge of the CS (chip select) signal, which simultaneously initiates sampling and starts the conversion process. Data becomes available on the SDATA pin after 14 SCLK cycles (at 48 MHz: 291 ns max total conversion time). There is no pipeline delay-the output corresponds strictly to the sample taken at the CS falling edge. The AD7274BRMZ-REEL guarantees deterministic latency, making it suitable for time-critical control loops where jitter or variable delay would degrade system stability.
What power management modes does the AD7274BRMZ-REEL support, and how do they affect current draw?
The AD7274BRMZ-REEL supports three power states: Normal Mode (3.8 mA typ at 3 V, 3 MSPS), Partial Power-Down (34 μA typ), and Full Power-Down (0.1 μA typ at −40°C to +85°C). Full power-down is entered when CS remains high and SCLK is inactive; exit time is 1 μs max. These modes are controlled entirely via the standard serial interface-no dedicated control pins are required. The AD7274BRMZ-REEL achieves its 11.4 mW operational power at 3 MSPS through advanced charge redistribution and clock-gating techniques.
Is the AD7274BRMZ-REEL pin-compatible with other members of the AD727x family?
The AD7274BRMZ-REEL shares identical pinout and footprint with the AD7273BRMZ-REEL (10-bit) and AD7274BCPZ-RL7 (same die, LFCSP package), but is not pin-compatible with AD7276/AD7277/AD7278 due to differing pin assignments (e.g., 6-lead TSOT variants). All 8-lead TSOT versions (AD7273/AD7274) use the same mechanical layout and electrical pin functions-enabling hardware reuse across resolution grades. However, firmware must be updated to handle 12-bit vs. 10-bit data framing (two trailing zeros vs. four).
AD7274BRMZ-REEL 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):
- 3M
- 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:
- External
- Voltage - Supply, Analog:
- 2.35V ~ 3.6V
- Voltage - Supply, Digital:
- 2.35V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7274BRMZ-REEL FAQ
1.How can I place an order for AD7274BRMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7274BRMZ-REEL 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 AD7274BRMZ-REEL reliable?
The price and inventory of AD7274BRMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7274BRMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7274BRMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7274BRMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7274BRMZ-REEL?
AD7274BRMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7274BRMZ-REEL 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 AD7274BRMZ-REEL?
For technical support, including AD7274BRMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7274BRMZ-REEL requirements.
6.How does Aetrix verify that AD7274BRMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7274BRMZ-REEL 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 AD7274BRMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7274BRMZ-REEL?
All AD7274BRMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7274BRMZ-REEL, 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 AD7274BRMZ-REEL part is unused and in its original packaging.
Return procedure for AD7274BRMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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