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Analog Devices Inc. AD7276ARMZ
- Part No.:
- AD7276ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7276ARMZ.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,765
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Product details
Overview
AD7276ARMZ from Analog Devices is a 12-bit, 3 MSPS successive approximation analog-to-digital converter (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 consumption at 3 V/3 MSPS, and features no pipeline delay for deterministic sampling control via CS. It is used in high-speed sensor signal conditioning and portable instrumentation requiring low-power, high-accuracy digitization.
For engineers reviewing the AD7276ARMZ datasheet, AD7276ARMZ pinout, AD7276ARMZ application, or AD7276ARMZ equivalent, this page provides verified technical context, validated pin functions, confirmed 12-bit DC and dynamic performance specs, and real-world application mappings - all specific to the AD7276ARMZ variant in 6-lead TSOT packaging.
Technical Context
The AD7276ARMZ implements a standard SAR architecture with track-and-hold amplifier supporting >55 MHz full-power bandwidth and aperture jitter of 18 ps typ. Conversion is initiated on the falling edge of CS, with data clocked out MSB-first on SDATA using falling-edge SCLK synchronization.
It uses an internal VDD-referenced ADC core, enabling 0 V to VDD analog input range without external reference components. Serial interface timing is fully SPI-/QSPI™-/MICROWIRE™-/DSP-compatible, requiring 14 SCLK cycles for full 12-bit readout at up to 48 MHz SCLK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic transfer function with no missing codes over full temperature range. |
| Throughput Rate | 3 MSPS maximum - enables real-time sampling of signals up to ~1.5 MHz Nyquist bandwidth. |
| SNR @ 1 MHz | 70 dB typical - supports high-fidelity digitization of medium-frequency sensor or RF IF signals. |
| Power Consumption | 12.6 mW at 3 V / 3 MSPS - enables battery-powered operation with minimal thermal load in compact layouts. |
| Analog Input Range | 0 V to VDD - eliminates need for external level-shifting or reference buffers in single-supply systems. |
| Aperture Jitter | 18 ps typical - limits sampling uncertainty to <0.05 LSB at 1 MHz input, preserving dynamic accuracy. |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial motor control environments. |
| Package | 6-lead TSOT (2.9 mm × 1.6 mm × 0.8 mm) - ultra-compact footprint for space-constrained PCBs. |
Pinout & Package
AD7276ARMZ is housed in a 6-lead Thin Small Outline Transistor (TSOT) package with exposed pad (θJA = 230°C/W). Pin layout is optimized for minimal parasitic capacitance and high-speed signal integrity in mixed-signal layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power Supply Input | Supplies analog and digital circuitry; must be decoupled with ≥1 μF ceramic capacitor near pin for noise immunity. |
| GND (Pin 2) | Analog Ground Reference | Common return for VIN and internal circuitry; requires dedicated low-impedance ground plane connection. |
| VIN (Pin 3) | Analog Input Channel | Single-ended input with 42 pF track-mode capacitance; accepts 0 V to VDD range without external bias. |
| SCLK (Pin 4) | Serial Clock Input | Drives internal conversion timing and serial data output; supports up to 48 MHz with 40/60 duty cycle. |
| SDATA (Pin 5) | Serial Data Output | Three-state CMOS output delivering two leading zeros + 12-bit result + two trailing zeros, MSB first. |
| CS (Pin 6) | Chip Select / Conversion Trigger | Active-low signal that initiates sampling on falling edge and frames serial data transfer window. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables precise, deterministic sampling control via CS edge - critical for time-critical closed-loop systems. |
| VDD-referenced internal reference | Eliminates external reference IC and associated routing complexity while maintaining 0–VDD input flexibility. |
| Flexible power management | Full power-down mode draws only 0.1 μA typical, enabling microamp-level sleep states in portable devices. |
| SPI/QSPI/MICROWIRE compatibility | Direct interfacing with ARM Cortex-M, Blackfin, and TI C2000 microcontrollers without protocol translation logic. |
| High-speed track-and-hold | 55 MHz full-power bandwidth supports accurate digitization of fast transients and wideband sensor outputs. |
Applications
| Motor Control Feedback | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Real-time current and voltage sensing in BLDC motor inverters for field-oriented control. IC Role / Device Role / Timing Role: High-speed ADC capturing phase currents at 3 MSPS with sub-100 ns aperture jitter to preserve vector accuracy. Use Value: Enables precise torque ripple suppression and efficient commutation timing without external reference or calibration overhead. |
Use Scenario: ECG front-end signal acquisition in handheld patient monitors with battery life constraints. IC Role / Device Role / Timing Role: Digitizing conditioned biopotential signals with 70 dB SNR at 1 kHz bandwidth while consuming <13 mW. Use Value: Delivers clinical-grade resolution in ultra-low-power, space-limited designs using only VDD as reference. |
| Industrial Process Sensor Interface | Automotive Battery Monitoring Unit (BMU) |
|
Use Scenario: Multi-channel thermocouple and RTD signal digitization in PLC analog input modules. IC Role / Device Role / Timing Role: 12-bit SAR ADC providing stable DC accuracy (±1 LSB INL) across −40°C to +125°C ambient. Use Value: Eliminates system-level calibration across temperature while supporting direct connection to isolated signal conditioners. |
Use Scenario: Cell voltage monitoring in 12S Li-ion battery packs for EV and energy storage systems. IC Role / Device Role / Timing Role: High-precision, low-drift ADC sampling individual cell voltages at 3 MSPS with 0.1 μA power-down current. Use Value: Supports fast transient detection during charge/discharge cycles while minimizing self-heating in sealed enclosures. |
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 |
|---|---|---|---|
| AD7476ARMZ | Same 6-lead TSOT package and pinout; lower 1 MSPS throughput; 65 dB SNR @ 1 MHz; higher DNL (±1 LSB max). | Better suited for low-throughput, cost-sensitive industrial sensors where 12-bit monotonicity is required but speed is secondary. | Select AD7476ARMZ when system clock budget is constrained and 1 MSPS suffices - reduces SCLK timing margin requirements. |
| ADS7822UID | 12-bit, 200 kSPS max; SPI interface; 2.7–5.25 V supply; 71 dB SNR @ 10 kHz; requires external reference. | Targeted at lower-speed, higher-voltage industrial I/O modules where extended supply range outweighs speed loss. | Choose ADS7822UID only if 5 V logic compatibility or external reference control is mandatory - not drop-in compatible. |
Compared with AD7276ARMZ, AD7476ARMZ trades speed and SNR for lower cost and relaxed timing, while ADS7822UID sacrifices throughput and adds reference complexity to support wider supply rails - neither offers pin-to-pin or functional equivalence without design revision.
Availability
AD7276ARMZ is available at Aetrix Electronics and suitable for motor control feedback, portable medical instrumentation, industrial process sensor interface, and automotive battery monitoring unit applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD7276ARMZ 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 AD7276ARMZ belongs to Analog Devices' precision SAR ADC product line, designed specifically for high-speed, low-power, single-supply data acquisition in space- and energy-constrained embedded systems.
FAQ
What is the maximum sampling rate supported by the AD7276ARMZ?
The AD7276ARMZ supports a maximum throughput rate of 3 MSPS under B-grade conditions with 48 MHz SCLK and VDD = 2.35 V to 3.6 V. This is achieved using a 14 SCLK-cycle serial readout sequence. At lower SCLK frequencies or Y-grade operation, the rate drops to 1 MSPS. The AD7276ARMZ does not support oversampling or decimation modes - its 3 MSPS is fixed by architecture and timing specifications.
Does the AD7276ARMZ require an external voltage reference?
No, the AD7276ARMZ uses an internal reference derived from VDD, enabling a full-scale analog input range of 0 V to VDD without external components. This simplifies layout and reduces BOM count. However, absolute accuracy depends on VDD stability - for applications requiring tight absolute voltage measurement, a regulated VDD or post-processing calibration is recommended. The AD7276ARMZ does not expose a REF pin.
What is the meaning of "no pipeline delay" in the AD7276ARMZ datasheet?
"No pipeline delay" means the AD7276ARMZ is a true successive approximation register (SAR) ADC - the conversion result corresponds exactly to the analog sample captured at the falling edge of CS, with no latency from pipelined stages. There is zero cycle delay between sampling and data availability on SDATA. This enables deterministic timing for real-time control loops, unlike sigma-delta or pipeline ADCs which introduce fixed or variable latency.
Can the AD7276ARMZ operate from a 2.5 V supply?
Yes, the AD7276ARMZ is fully specified for VDD = 2.35 V to 3.6 V, including 2.5 V operation. At 2.5 V, dynamic performance remains consistent: SNR stays at 70 dB typ @ 1 MHz, and power consumption scales linearly to ~10.5 mW at 3 MSPS. Logic thresholds (VINH/VINL) automatically adapt per supply voltage - no level-shifting is needed for MCU interfacing.
How is the AD7276ARMZ different from the AD7277ARMZ and AD7278ARMZ?
The AD7276ARMZ is the 12-bit member of the AD7276/AD7277/AD7278 family; AD7277ARMZ is 10-bit (3.45 MSPS, 60.5 dB SINAD), and AD7278ARMZ is 8-bit (4 MSPS, 49 dB SINAD). All share identical pinout, package, supply range, temperature rating, and serial interface timing - but differ in resolution, throughput, and AC performance. The AD7276ARMZ provides highest DC accuracy (±1 LSB INL) and best SNR, making it optimal for precision measurement where bit depth matters most.
AD7276ARMZ 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:
- 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:
- -
AD7276ARMZ FAQ
1.How can I place an order for AD7276ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7276ARMZ 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 AD7276ARMZ reliable?
The price and inventory of AD7276ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7276ARMZ is usually 5 days.
3.What payment methods are accepted for AD7276ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7276ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7276ARMZ?
AD7276ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7276ARMZ 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 AD7276ARMZ?
For technical support, including AD7276ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7276ARMZ requirements.
6.How does Aetrix verify that AD7276ARMZ is sourced from the original manufacturer or authorized distributors?
All AD7276ARMZ 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 AD7276ARMZ meets industry standards.
7.What is the process for return or replacement of AD7276ARMZ?
All AD7276ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7276ARMZ, 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 AD7276ARMZ part is unused and in its original packaging.
Return procedure for AD7276ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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