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Analog Devices Inc. AD7274BUJZ-REEL7
- Part No.:
- AD7274BUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
AD7274BUJZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,172
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Product details
Overview
AD7274BUJZ-REEL7 from Analog Devices is a 12-bit, 3 MSPS successive approximation ADC in an 8-lead TSOT package, operating from a single 2.35 V to 3.6 V supply. It delivers 69.5 dB SNR at 1 MHz input, supports external reference from 1.4 V to VDD, and features no pipeline delay for deterministic timing in high-speed data acquisition systems.
For engineers reviewing the AD7274BUJZ-REEL7 datasheet, AD7274BUJZ-REEL7 pinout, AD7274BUJZ-REEL7 application, or AD7274BUJZ-REEL7 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The AD7274BUJZ-REEL7 uses a charge redistribution DAC architecture with on-chip track-and-hold, enabling full-power bandwidth of 55 MHz (–3 dB) and aperture jitter of 18 ps typ. Conversion is initiated by the falling edge of CS and clocked by SCLK, requiring exactly 14 cycles at 48 MHz for 12-bit output with zero pipeline latency.
It implements three power modes: normal (3.8 mA typ at 3 V), partial power-down (34 μA typ), and full power-down (0.1 μA typ), all managed via the same serial interface. The external reference input (VREF) directly sets the 0–VREF analog input range and supports dynamic scaling without internal reference buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic transfer function with no missing codes up to 12-bit precision. |
| Throughput Rate | 3 MSPS - maximum sustained sampling rate with full DC and AC accuracy maintained. |
| SNR @ 1 MHz | 69.5 dB min - enables ≥11.3 ENOB for high-fidelity signal capture in sensor and comm applications. |
| Power @ 3 MSPS | 11.4 mW typ at 3 V - allows battery-powered or thermally constrained designs with minimal heat dissipation. |
| Input Bandwidth | 55 MHz (–3 dB) - supports undersampling of IF signals up to ~27 MHz without aliasing penalties. |
| Operating Temp | −40°C to +125°C - qualified for automotive under-hood, industrial motor control, and aerospace environments. |
| Reference Range | 1.4 V to VDD - permits flexible scaling (e.g., 2.5 V ref with 3.3 V supply) while maximizing dynamic range. |
Pinout & Package
AD7274BUJZ-REEL7 is housed in an 8-lead TSOT package (2.1 mm × 1.6 mm × 0.55 mm, 0.5 mm pitch), optimized for space-constrained PCB layouts and high-density mixed-signal systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Single 2.35–3.6 V rail powering both analog and digital sections; requires local 100 nF + 10 μF decoupling. |
| SDATA (Pin 2) | Serial data output | Three-state CMOS output delivering 12-bit result MSB-first: two leading zeros + 12 data bits + two trailing zeros. |
| CS (Pin 7) | Chip select / conversion trigger | Active-low signal that samples VIN on falling edge and initiates conversion; also frames serial data transfer. |
| AGND (Pin 8) | Analog ground reference | Star-point return for VIN, VREF, and internal analog circuitry; must be isolated from DGND except at single point. |
| VREF (Pin 5) | External reference input | Defines full-scale range (0 to VREF); accepts 1.4–VDD voltage; requires 10 μF capacitor to AGND for stability. |
| SCLK (Pin 6) | Serial clock input | Drives both data readout and internal conversion timing; supports up to 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 under all transient conditions. |
| VIN (Pin 4) | Analog input channel | Single-ended input with 42 pF track capacitance; supports 0–VREF range; requires low-impedance source ≤10 Ω for <1 LSB THD. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic, cycle-accurate timing control-critical for closed-loop feedback and time-of-flight measurement. |
| Flexible reference scaling | VREF range of 1.4 V to VDD allows dynamic adjustment of input range without changing supply rails or layout. |
| Ultra-low power-down current | 0.1 μA typical in full power-down mode extends battery life in intermittent-sampling applications like IoT sensors. |
| SPI/QSPI/MICROWIRE/DSP compatibility | Direct interface to common microcontrollers and DSPs without level-shifting or protocol translation logic. |
| Wide input bandwidth | 55 MHz full-power bandwidth supports direct digitization of baseband and IF signals in communications receivers. |
Applications
| High-Speed Data Acquisition | Industrial Process Monitoring |
|---|---|
|
Use Scenario: Real-time monitoring of motor phase currents and voltages in servo drives with 10+ kHz control loop rates. IC Role / Device Role / Timing Role: Primary ADC capturing synchronized analog inputs for FOC (field-oriented control) algorithms with sub-333 ns conversion cycle time. Use Value: 3 MSPS throughput and 69.5 dB SNR ensure accurate current reconstruction even under PWM switching noise, reducing torque ripple. |
Use Scenario: Condition-based maintenance of factory floor equipment using vibration and temperature sensor fusion. IC Role / Device Role / Timing Role: Low-power, high-accuracy front-end ADC acquiring multi-channel analog sensor outputs in battery-operated edge nodes. Use Value: 0.1 μA power-down current and −40°C to +125°C rating enable years of unattended operation in harsh industrial enclosures. |
| Portable Medical Instrumentation | Communications Receiver Front-End |
|
Use Scenario: ECG and EEG signal digitization in handheld diagnostic devices requiring clinical-grade fidelity and low power. IC Role / Device Role / Timing Role: Precision analog-to-digital converter handling biopotential inputs with programmable gain amplifier (PGA) interface. Use Value: 12-bit resolution with ±1 LSB INL and 69.5 dB SNR meets AAMI EC11 and IEC 60601-2-27 requirements for diagnostic accuracy. |
Use Scenario: Direct sampling of 10–20 MHz IF signals in software-defined radio (SDR) and spectrum analyzers. IC Role / Device Role / Timing Role: High-bandwidth ADC providing digitized IF stream to FPGA-based demodulator with deterministic latency. Use Value: 55 MHz full-power bandwidth and 18 ps aperture jitter preserve signal integrity during undersampling, minimizing image rejection complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7274BRMZ-REEL | Same die, 8-lead MSOP package (3 mm × 3 mm); 205.9°C/W θJA vs. TSOT's 230°C/W; identical electrical specs. | Better thermal performance in convection-cooled boards; larger footprint limits ultra-dense layouts. | Select AD7274BRMZ-REEL when board-level thermal management favors MSOP or legacy layout reuse is required. |
| ADS7953IRHBT | 12-bit, 1 MSPS SAR ADC with integrated 16-channel MUX and programmable reference; higher power (12 mW at 1 MSPS). | Designed for multi-channel data loggers; lacks 3 MSPS speed and 55 MHz bandwidth of AD7274BUJZ-REEL7. | Select ADS7953IRHBT only when channel multiplexing and on-chip reference are prioritized over speed and bandwidth. |
Compared with AD7274BRMZ-REEL, AD7274BUJZ-REEL7 saves 35% board area but trades 24°C/W higher thermal resistance; versus ADS7953IRHBT, it delivers 3× higher throughput and 5.5× wider analog bandwidth at the cost of no integrated MUX or reference.
Availability
AD7274BUJZ-REEL7 is available at Aetrix Electronics and suitable for high-speed data acquisition, industrial process monitoring, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7274BUJZ-REEL7 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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD7273/AD7274 product line was designed specifically for space- and power-constrained applications demanding high-speed, high-accuracy digitization without pipeline latency-targeting industrial automation, medical diagnostics, and communications infrastructure.
FAQ
What is the maximum sampling frequency supported by the AD7274BUJZ-REEL7?
The AD7274BUJZ-REEL7 supports a maximum throughput rate of 3 MSPS, achieved with a 48 MHz SCLK and 14-cycle serial readout. This rate is fully specified across the −40°C to +125°C temperature range and maintains all AC and DC performance parameters including 69.5 dB SNR and ±1 LSB INL.
Does the AD7274BUJZ-REEL7 include an internal voltage reference?
No, the AD7274BUJZ-REEL7 requires an external reference applied to the VREF pin. The reference voltage must be between 1.4 V and VDD, and a 10 μF capacitor is mandatory between VREF and AGND for stability. No internal reference is present-this enables flexible scaling and improved PSRR over integrated solutions.
What package type is used for the AD7274BUJZ-REEL7?
The AD7274BUJZ-REEL7 uses an 8-lead TSOT package (2.1 mm × 1.6 mm × 0.55 mm, 0.5 mm pitch), distinct from the MSOP variant (AD7274BRMZ-REEL). This compact leaded package supports reflow soldering and is optimized for high-density PCB layouts in portable and space-constrained systems.
How does the AD7274BUJZ-REEL7 handle power management during idle periods?
The AD7274BUJZ-REEL7 offers three power states: normal (3.8 mA typ), partial power-down (34 μA typ), and full power-down (0.1 μA typ). Power mode is controlled via the serial interface using CS and SCLK sequences defined in the Modes of Operation section-no additional control pins are required.
Is the AD7274BUJZ-REEL7 compatible with standard microcontroller SPI interfaces?
Yes, the AD7274BUJZ-REEL7 is fully SPI-, QSPI-, MICROWIRE-, and DSP-compatible. It uses a standard 3-wire interface (CS, SCLK, SDATA), supports MSB-first transmission, and tolerates 40/60 SCLK duty cycle. No special framing or command overhead is needed-data appears as a simple 16-bit frame (2 leading zeros + 12 bits + 2 trailing zeros).
AD7274BUJZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7274BUJZ-REEL7 FAQ
1.How can I place an order for AD7274BUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7274BUJZ-REEL7 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 AD7274BUJZ-REEL7 reliable?
The price and inventory of AD7274BUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7274BUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7274BUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7274BUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7274BUJZ-REEL7?
AD7274BUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7274BUJZ-REEL7 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 AD7274BUJZ-REEL7?
For technical support, including AD7274BUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7274BUJZ-REEL7 requirements.
6.How does Aetrix verify that AD7274BUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7274BUJZ-REEL7 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 AD7274BUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7274BUJZ-REEL7?
All AD7274BUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7274BUJZ-REEL7, 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 AD7274BUJZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7274BUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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