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Analog Devices Inc. AD7276BRMZ-REEL
- Part No.:
- AD7276BRMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7276BRMZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,685
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Product details
Overview
AD7276BRMZ-REEL from Analog Devices is a 12-bit, 3 MSPS successive approximation ADC in a 6-lead TSOT package, operating from 2.35 V to 3.6 V supply. It delivers 70 dB SNR at 1 MHz input, 12.6 mW power at 3 V/3 MSPS, and features no pipeline delay with SPI-/QSPI™-/MICROWIRE™-/DSP-compatible serial interface. It serves high-speed sensor signal digitization in industrial data acquisition systems.
For engineers reviewing the AD7276BRMZ-REEL datasheet, AD7276BRMZ-REEL pinout, AD7276BRMZ-REEL application, or AD7276BRMZ-REEL equivalent, key selection criteria include guaranteed no missing codes to 12 bits, internal VDD-referenced full-scale range (0–VDD), aperture jitter of 18 ps typ, and −40°C to +125°C operation with full power-down current ≤2 μA.
Technical Context
The AD7276BRMZ-REEL implements a standard SAR architecture with track-and-hold amplifier capable of >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.
It uses VDD as its reference source, eliminating external reference components and enabling dynamic input range scaling with supply voltage. Timing is fully synchronous to SCLK (up to 48 MHz for B grade), with conversion time fixed at 291 ns max (14 SCLK cycles) and acquisition time ≥60 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function 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 in continuous mode. |
| SNR @ 1 MHz | 70 dB typ - supports high-fidelity digitization of medium-frequency analog sensor outputs. |
| Power @ 3 V / 3 MSPS | 12.6 mW typ - allows integration into power-constrained portable or battery-backed instrumentation. |
| Aperture Jitter | 18 ps typ - limits sampling uncertainty to <0.05 LSB at 1 MHz input, preserving dynamic performance. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, motor control, and industrial PLC environments. |
| Full Power-Down Current | ≤2 μA max - enables microamp-level sleep-state power management in duty-cycled systems. |
Pinout & Package
AD7276BRMZ-REEL is housed in a 6-lead TSOT package (2.9 mm × 1.6 mm × 0.8 mm, 0.95 mm pitch), optimized for space-constrained PCB layouts. Thermal resistance θJA = 230°C/W enables operation without heatsinking in ambient temperatures up to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Single 2.35–3.6 V rail powers analog core, digital interface, and internal reference - eliminates need for external reference or LDO. |
| GND (Pin 2) | Analog ground reference | Common return for VIN and internal circuitry; must be connected to low-impedance system AGND plane to maintain SNR. |
| VIN (Pin 3) | Analog input channel | Single-ended input with 0–VDD range; 42 pF input capacitance in track mode requires careful driver impedance matching. |
| SCLK (Pin 4) | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 48 MHz (B grade) with 40/60 mark/space ratio. |
| SDATA (Pin 5) | Serial data output | Three-state CMOS output; delivers 16-bit frame (2 leading zeros + 12 data bits + 2 trailing zeros) MSB-first on SCLK falling edge. |
| CS (Pin 6) | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial readout - enables precise timing control without external logic. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True single-cycle conversion with deterministic latency - simplifies real-time control loop timing and eliminates latency compensation. |
| VDD-referenced full-scale range | 0 V to VDD input range - maximizes dynamic range without external reference scaling; supports direct connection to ratiometric sensors. |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility - interoperates with common microcontrollers and DSPs without protocol translation logic. |
| Guaranteed no missing codes | Specified to 12 bits over full temperature range - ensures monotonicity critical for closed-loop feedback and position sensing applications. |
| Low-power power-down modes | Full power-down draws ≤2 μA - enables energy-efficient wake-on-event architectures in battery-powered condition monitoring nodes. |
Applications
| Industrial Data Acquisition | Motor Control Feedback |
|---|---|
|
Use Scenario: High-speed sampling of current/voltage sensors in servo drives and inverters. IC Role / Device Role / Timing Role: Single-ended analog front-end digitizer with deterministic 291 ns conversion time and CS-triggered sampling. Use Value: Enables precise rotor position estimation and current loop closure at 3 MSPS, supporting field-oriented control (FOC) algorithms. |
Use Scenario: Real-time phase current measurement in three-phase BLDC motor controllers. IC Role / Device Role / Timing Role: Low-latency ADC synchronizing with PWM dead-time to capture current peaks during switching transitions. Use Value: 18 ps aperture jitter preserves accuracy of fast-rising current waveforms, reducing torque ripple and improving efficiency. |
| Portable Test Equipment | Automotive Sensor Interface |
|
Use Scenario: Battery-powered handheld oscilloscopes and waveform analyzers requiring compact, low-power digitization. IC Role / Device Role / Timing Role: Primary ADC in signal chain with integrated reference and minimal external components. Use Value: 12.6 mW at 3 MSPS and 2 μA power-down current extend battery life while maintaining 70 dB SNR for 1 MHz signals. |
Use Scenario: Engine control unit (ECU) interface for knock, pressure, or exhaust gas sensors operating at elevated ambient temperatures. IC Role / Device Role / Timing Role: Ruggedized ADC rated for −40°C to +125°C with VDD-referenced input scaling. Use Value: Eliminates external reference drift concerns and maintains 12-bit linearity across full automotive temperature range. |
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 |
|---|---|---|---|
| AD7476ARMZ | 12-bit, 1 MSPS, 8-lead MSOP; lower throughput, same pinout family but different package and speed grade. | Targeted at cost-sensitive, lower-bandwidth applications where 3 MSPS is unnecessary. | Select AD7476ARMZ only if system sampling rate ≤1 MSPS and MSOP footprint is acceptable. |
| ADS7822UID | 12-bit, 250 kSPS, 8-lead SOIC; significantly slower, higher power per sample, separate reference pin required. | Suitable for legacy designs with SOIC layout and relaxed timing requirements. | Choose ADS7822UID only when board space allows SOIC and throughput demand is <300 kSPS. |
Compared with AD7276BRMZ-REEL, AD7476ARMZ trades 3× lower throughput for reduced cost and identical resolution, while ADS7822UID sacrifices speed and integration (external reference needed) for SOIC compatibility - neither offers the combination of 3 MSPS, 6-lead TSOT, and VDD-referenced simplicity.
Availability
AD7276BRMZ-REEL is available at Aetrix Electronics and suitable for industrial data acquisition, motor control feedback, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7276BRMZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7276 is part of Analog Devices' precision high-speed SAR ADC product line, designed specifically for space- and power-constrained applications demanding 12-bit accuracy at multi-MSPS rates without pipeline latency.
FAQ
What is the maximum SCLK frequency supported by AD7276BRMZ-REEL?
The AD7276BRMZ-REEL supports up to 48 MHz SCLK for B-grade devices at 3 MSPS operation. At this clock rate, conversion completes in 291 ns (14 SCLK cycles). For Y-grade variants, the maximum SCLK is 16 MHz. The device remains functional down to 500 kHz, though throughput scales linearly with clock frequency.
Does AD276BRMZ-REEL require an external reference voltage?
No, the AD7276BRMZ-REEL uses an internal reference derived from VDD, enabling a full-scale input range of 0 V to VDD. This eliminates external reference components and associated layout sensitivity, simplifying design while maintaining ratiometric accuracy with sensor supplies.
How does the AD7276BRMZ-REEL handle sampling timing control?
The AD7276BRMZ-REEL uses the active-low CS signal to precisely control sampling: the falling edge of CS initiates track-to-hold transition and starts conversion. This provides deterministic, software-controllable sampling instants without reliance on internal clocks or complex timing sequences.
What is the guaranteed DC accuracy of AD7276BRMZ-REEL over temperature?
The AD7276BRMZ-REEL guarantees ±1 LSB max differential nonlinearity and ±1 LSB max integral nonlinearity over −40°C to +125°C (B grade), with total unadjusted error ≤±3.5 LSB max. Offset error is ±3 LSB max and gain error is ±3.5 LSB max across the full temperature range.
Can AD7276BRMZ-REEL interface directly with common microcontrollers?
Yes, the AD7276BRMZ-REEL features SPI-/QSPI™-/MICROWIRE™-/DSP-compatible serial interface with standard 3-wire timing (CS, SCLK, SDATA). Its MSB-first 16-bit frame format (2+12+2) and CMOS-level I/O are compatible with most ARM Cortex-M, Renesas RX, and TI C2000 microcontrollers without level-shifting or protocol adaptation.
AD7276BRMZ-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:
- 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:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7276BRMZ-REEL FAQ
1.How can I place an order for AD7276BRMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7276BRMZ-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 AD7276BRMZ-REEL reliable?
The price and inventory of AD7276BRMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7276BRMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7276BRMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7276BRMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7276BRMZ-REEL?
AD7276BRMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7276BRMZ-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 AD7276BRMZ-REEL?
For technical support, including AD7276BRMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7276BRMZ-REEL requirements.
6.How does Aetrix verify that AD7276BRMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7276BRMZ-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 AD7276BRMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7276BRMZ-REEL?
All AD7276BRMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7276BRMZ-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 AD7276BRMZ-REEL part is unused and in its original packaging.
Return procedure for AD7276BRMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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