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Analog Devices Inc. AD7276BUJZ-REEL7
- Part No.:
- AD7276BUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AD7276BUJZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,658
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Product details
Overview
AD7276BUJZ-REEL7 from Analog Devices is a 12-bit, 3 MSPS successive approximation analog-to-digital converter (SAR ADC) optimized for high-speed, low-power signal acquisition in space-constrained systems. It operates from a single 2.35 V to 3.6 V supply, delivers 70 dB SNR at 1 MHz input, consumes 12.6 mW at 3 V/3 MSPS, and features no pipeline delay. It is used in portable instrumentation, battery-powered data loggers, and motor control current sensing.
For engineers reviewing the AD7276BUJZ-REEL7 datasheet, AD7276BUJZ-REEL7 pinout, AD7276BUJZ-REEL7 application, or AD7276BUJZ-REEL7 equivalent, key selection criteria include guaranteed no missing codes to 12 bits, internal VDD-referenced full-scale range (0 V to VDD), SPI-compatible serial interface with CS-controlled sampling, and 6-lead TSOT package compatibility with layout-sensitive embedded designs.
Technical Context
The AD7276BUJZ-REEL7 implements a standard SAR architecture with a track-and-hold amplifier supporting >55 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS, and data is clocked out MSB-first on SDATA's falling SCLK edge - two leading zeros, 12 data bits, two trailing zeros - enabling precise timing control without latency artifacts.
It uses VDD as its internal reference source, eliminating external reference components and simplifying system design while maintaining 0 V to VDD analog input range. Power management includes full power-down mode (0.1 μA typical) and partial power-down, with throughput rate directly governed by SCLK frequency up to 48 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes across full temperature range (−40°C to +125°C). |
| Throughput Rate | 3 MSPS maximum - enables real-time sampling of signals up to ~1.5 MHz Nyquist bandwidth in continuous mode. |
| SNR @ 1 MHz | 70 dB typical - supports accurate digitization of medium-frequency sensor outputs (e.g., vibration, audio-band signals) with minimal noise floor impact. |
| Power Consumption | 12.6 mW at 3 V/3 MSPS - balances speed and efficiency for battery-operated or thermally constrained applications. |
| Analog Input Range | 0 V to VDD - eliminates need for level-shifting circuitry when interfacing with single-supply sensors or op-amps. |
| Aperture Jitter | 18 ps typical - limits sampling uncertainty, preserving dynamic performance at high input frequencies. |
| Package | 6-lead TSOT (2.9 mm × 1.6 mm × 0.8 mm) - enables ultra-compact PCB layouts in handheld or modular electronics. |
Pinout & Package
AD7276BUJZ-REEL7 is housed in a 6-lead Thin Small Outline Transistor (TSOT) package with exposed pad for thermal enhancement. Pin spacing is 0.95 mm, and the package is RoHS-compliant and moisture-sensitive level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Supplies core logic and analog circuitry; also serves as internal reference - must be well-bypassed (e.g., 100 nF ceramic + 10 µF tantalum) near pin. |
| GND (Pin 2) | Analog ground reference | Primary return path for analog input and internal conversion circuitry; requires dedicated low-impedance connection to system AGND plane. |
| VIN (Pin 3) | Single-ended analog input | Accepts 0 V to VDD differential input; input capacitance is 42 pF in track mode - source impedance must be ≤100 Ω for optimal THD. |
| SCLK (Pin 4) | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 48 MHz; duty cycle tolerance 40/60 to 60/40. |
| SDATA (Pin 5) | Serial data output | Three-state CMOS output; provides 16-bit frame (2 leading zeros + 12 data bits + 2 trailing zeros) MSB-first on SCLK falling edge. |
| CS (Pin 6) | Active-low chip select | Initiates conversion on falling edge and frames serial data; minimum pulse width 3 ns - compatible with fast microcontrollers and DSPs. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic, one-shot sampling with precise CS-edge-triggered acquisition - critical for time-critical control loops and synchronized multi-channel systems. |
| VDD-referenced conversion | Removes dependency on external reference ICs or resistive dividers, reducing BOM count and layout area while maintaining rail-to-rail input flexibility. |
| Flexible power management | Full power-down mode draws only 0.1 μA typical, allowing rapid wake-up (<1 μs) for burst-mode acquisition in energy-harvesting or IoT endpoint applications. |
| SPI-/QSPI-/MICROWIRE-/DSP-compatible interface | Interoperates with industry-standard controllers without protocol translation - simplifies firmware development and reduces driver validation effort. |
| Guaranteed no missing codes | Ensures monotonicity across full 12-bit range and −40°C to +125°C, eliminating data gaps in closed-loop feedback or precision measurement applications. |
Applications
| Portable Data Acquisition | Motor Current Monitoring |
|---|---|
|
Use Scenario: Battery-powered handheld oscilloscopes and multimeters capturing transient waveforms in field service environments. IC Role / Device Role / Timing Role: Primary high-speed ADC acquiring analog front-end signals with minimal latency and no pipeline artifacts. Use Value: 3 MSPS throughput and 70 dB SNR enable accurate reconstruction of kHz-range transients; 6-lead TSOT minimizes board footprint and weight. |
Use Scenario: Real-time phase current sampling in BLDC motor drives for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Synchronized current-sense ADC triggered by PWM dead-time logic via CS pin for precise current capture at commutation edges. Use Value: No pipeline delay ensures sampled value corresponds exactly to commanded switching instant; 12-bit resolution supports <1% current measurement accuracy. |
| Industrial Sensor Interface | Medical Vital Sign Monitoring |
|
Use Scenario: Signal conditioning module for piezoelectric accelerometers and strain gauges in predictive maintenance gateways. IC Role / Device Role / Timing Role: Low-noise, wide-bandwidth ADC digitizing conditioned sensor outputs with minimal added distortion. Use Value: 55 MHz full-power bandwidth accommodates resonant sensor harmonics; 18 ps aperture jitter preserves signal integrity in high-dynamic-range measurements. |
Use Scenario: Compact wearable ECG/PPG modules requiring low-power, high-fidelity analog front-end digitization. IC Role / Device Role / Timing Role: Energy-efficient ADC operating in intermittent acquisition mode, entering full power-down between samples. Use Value: 0.1 μA power-down current extends battery life; 12-bit resolution supports clinical-grade waveform fidelity for arrhythmia detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7476ARTZ-REEL7 | 12-bit, 1 MSPS, 6-lead TSOT, same pinout but lower throughput and higher INL (±2 LSB max vs. ±1 LSB max for AD7276BUJZ-REEL7). | Targeted at cost-sensitive, lower-speed applications where 3 MSPS is unnecessary - e.g., slow-scan industrial sensors. | Select AD7476ARTZ-REEL7 only if throughput ≤1 MSPS suffices and tighter DC accuracy is not required. |
| ADS7822U | 12-bit, 200 kSPS, 8-lead SOIC, external reference required, SPI-compatible but no CS-sampling control - conversion triggered internally. | Suitable for general-purpose data logging where timing determinism and compact packaging are secondary to ease of integration. | Choose ADS7822U when board space is less constrained and system-level timing coordination is handled externally. |
Compared with AD7476ARTZ-REEL7 and ADS7822U, AD7276BUJZ-REEL7 uniquely delivers 3 MSPS throughput in a 6-lead TSOT with CS-edge sampling control and VDD-referenced operation - making it the only option among the three for deterministic, high-speed, space-optimized acquisition.
Availability
AD7276BUJZ-REEL7 is available at Aetrix Electronics and suitable for portable instrumentation, motor control systems, and medical wearables requiring stable component supply across extended product lifecycles.
Supply support for AD7276BUJZ-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, Inc. 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 AD7276BUJZ-REEL7 belongs to Analog Devices' precision SAR ADC product line, engineered for applications demanding high speed, low power, and small size without sacrificing DC accuracy or dynamic performance.
FAQ
What is the maximum sampling rate supported by the AD7276BUJZ-REEL7?
The AD7276BUJZ-REEL7 supports a maximum throughput rate of 3 MSPS under specified conditions: VDD = 2.35 V to 3.6 V, fSCLK = 48 MHz, and TA = −40°C to +125°C. This rate is achieved using a 14-cycle SCLK timing sequence and requires proper decoupling and layout to maintain timing margins.
Does the AD7276BUJZ-REEL7 require an external voltage reference?
No, the AD7276BUJZ-REEL7 uses an internal reference derived from VDD, establishing a full-scale analog input range of 0 V to VDD. This eliminates the need for external reference components and simplifies system design while maintaining consistent scaling across supply variations.
How does the CS pin function in the AD7276BUJZ-REEL7?
The CS pin on the AD7276BUJZ-REEL7 serves a dual role: it initiates conversion on its falling edge and frames the serial data transfer. Sampling occurs precisely at the CS falling edge, and the resulting 16-bit data frame (2 leading zeros + 12 data bits + 2 trailing zeros) is clocked out on subsequent SCLK falling edges.
What is the power consumption of the AD7276BUJZ-REEL7 in full power-down mode?
In full power-down mode, the AD7276BUJZ-REEL7 draws 0.1 μA typical (2 μA maximum at −40°C to +85°C, 10 μA maximum at +85°C to +125°C). Recovery time from this state is ≤1 μs, enabling efficient burst-mode operation in battery-powered systems.
Is the AD7276BUJZ-REEL7 pin-compatible with other members of the AD727x family?
Yes, the AD7276BUJZ-REEL7 shares identical pinout and interface behavior with AD7277BUJZ-REEL7 and AD7278BUJZ-REEL7 in the 6-lead TSOT package. Firmware and layout can be reused across resolutions - only the data frame length (12/10/8 bits) and AC performance differ.
AD7276BUJZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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:
- Supply
- 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-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7276BUJZ-REEL7 FAQ
1.How can I place an order for AD7276BUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7276BUJZ-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 AD7276BUJZ-REEL7 reliable?
The price and inventory of AD7276BUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7276BUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7276BUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7276BUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7276BUJZ-REEL7?
AD7276BUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7276BUJZ-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 AD7276BUJZ-REEL7?
For technical support, including AD7276BUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7276BUJZ-REEL7 requirements.
6.How does Aetrix verify that AD7276BUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7276BUJZ-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 AD7276BUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7276BUJZ-REEL7?
All AD7276BUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7276BUJZ-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 AD7276BUJZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7276BUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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