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NXP Semiconductors MMA6271QT
- Part No.:
- MMA6271QT
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 16-LQFN Exposed Pad
- Datasheet:
-
MMA6271QT.pdf
- Description:
- ACCEL 2.5-10G ANALOG 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,423
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Product details
Overview
MMA6271QT from Freescale Semiconductor is a surface-micromachined, dual-axis capacitive accelerometer IC with integrated signal conditioning, factory-trimmed temperature compensation, and selectable full-scale ranges (±2.5g/±3.3g/±6.7g/±10g). It delivers ratiometric analog voltage outputs (XOUT/YOUT), operates from 2.2 V to 3.6 V, draws 500 μA active current, and supports Sleep Mode at 3 μA - making it suitable for freefall detection in laptop PCs and motion-based user interface control in battery-powered handhelds.
For engineers reviewing the MMA6271QT datasheet, MMA6271QT pinout, MMA6271QT application, or MMA6271QT equivalent, key selection criteria include its QFN-16 package footprint, g-Select logic-controlled sensitivity switching, ±2000g shock survivability, and built-in 1-pole switched-capacitor low-pass filter with no external components required.
Technical Context
The MMA6271QT integrates two micromachined capacitive sensing cells (g-cells) with an ASIC that performs capacitance-to-voltage conversion using switched-capacitor techniques. Its internal oscillator drives sampling at 11 kHz, and the output stage provides rail-to-rail ratiometric analog voltages proportional to acceleration along orthogonal X and Y axes.
Gain and offset are trimmed via EEPROM during manufacturing; zero-g offset is ±0.02 V at 25°C, full-scale output spans VSS+0.25 V to VDD–0.25 V, and nonlinearity is ±1.0% FSO. The device features no external passive components for filtering, and its Sleep Mode disables output drivers while preserving configuration state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | Configurable ±2.5g / ±3.3g / ±6.7g / ±10g via g-Select1/g-Select2 pins |
| Supply Voltage | 2.2 V – 3.6 V - enables direct integration with 2.5 V/3.3 V microcontroller I/O domains |
| Active Current | 500 μA typical - supports >100-hour operation on a 50 mAh coin cell in periodic-sampling mode |
| Sleep Current | 3 μA typical - allows wake-on-motion architectures with ultra-low standby power |
| Bandwidth | 350 Hz (–3 dB) - sufficient for human-motion detection without aliasing from internal 11 kHz sampling |
| Output Type | Ratiometric analog voltage (XOUT/YOUT) - eliminates supply-induced ADC errors when referenced to same VDD |
| Shock Survivability | ±2000g - withstands drop testing and mechanical handling in consumer assembly lines |
Pinout & Package
Package: 16-lead QFN (6 mm × 6 mm × 1.45 mm), case number 1622-02, exposed thermal pad internally connected to VSS but not recommended for soldering in consumer applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | g-Select1 / g-Select2 | CMOS logic inputs selecting full-scale range; internal pull-down defaults to 2.5g mode if left unconnected |
| 3 | VDD | Power supply input - requires 0.1 µF ceramic decoupling capacitor placed adjacent to pin |
| 4 | VSS | Ground reference - connects to internal die flag; PCB ground plane must underlie package area |
| 12 | Sleep Mode | Active-low enable - drives outputs to high-impedance state and reduces current to 3 μA |
| 14 | YOUT | Analog voltage output proportional to Y-axis acceleration; ratiometric to VDD |
| 15 | XOUT | Analog voltage output proportional to X-axis acceleration; ratiometric to VDD |
| 5–7, 8–11, 13, 16 | N/C | No internal connection - must remain unconnected per datasheet; unused for factory trim |
Key Features
| Feature | Design Value |
|---|---|
| g-Select programmable sensitivity | Four factory-calibrated ranges (2.5g–10g) selected dynamically via two logic pins - avoids hardware redesign across product variants |
| Integrated signal conditioning | On-die C-to-V conversion, gain amplification, and 1-pole low-pass filtering - eliminates need for external op-amps or RC networks |
| Ratiometric output architecture | Output offset and sensitivity scale linearly with VDD - enables direct connection to microcontroller ADC without separate voltage reference |
| Temperature-compensated performance | Factory-trimmed zero-g offset drift < ±0.02 mg/°C and sensitivity drift < ±0.01%/°C - ensures stable calibration over industrial temperature range |
| Robust mechanical design | Hermetically sealed wafer-level packaging with ±2000g shock rating - survives 1.8 m concrete drop tests per JEDEC standards |
Applications
| Laptop Freefall Detection | Mobile Phone Motion UI |
|---|---|
Use Scenario: Detect sudden vertical acceleration loss during accidental drop to trigger hard drive head parking before impact. IC Role / Device Role / Timing Role: Dual-axis analog accelerometer providing real-time X/Y acceleration data sampled at 11 kHz with sub-2 ms power-up response. Use Value: Enables reliable mechanical protection within 10 ms of freefall onset using only onboard analog outputs and minimal MCU processing. |
Use Scenario: Enable text scrolling, motion dialing, and image stabilization by interpreting tilt and gesture motions in smartphones. IC Role / Device Role / Timing Role: Low-power motion sensor delivering ratiometric analog outputs compatible with 10-bit embedded ADCs and supporting Sleep Mode wake-on-event. Use Value: Delivers consistent sensitivity across battery voltage discharge (2.2–3.6 V) without recalibration, reducing firmware complexity. |
| PDA Tilt Navigation | Gaming Event Recording |
Use Scenario: Provide tilt-compensated e-compass heading correction in PDAs by measuring gravitational vector orientation relative to device frame. IC Role / Device Role / Timing Role: Dual-axis static acceleration sensor with ±2.5g default range, zero-g offset trimmed to ±0.02 V at 25°C for precise gravity vector resolution. Use Value: Achieves <1° tilt accuracy over –40°C to +105°C using factory temperature compensation - no host-side calibration required. |
Use Scenario: Capture rapid motion events (e.g., shake-to-undo, throw-to-target) in handheld gaming devices with deterministic latency. IC Role / Device Role / Timing Role: High-bandwidth (350 Hz) analog sensor with 1.0 ms power-up response and 0.5 ms enable time from Sleep Mode. Use Value: Guarantees sub-millisecond motion capture timing - critical for responsive gameplay feedback and event-triggered haptics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis analog accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMA7260Q | Same manufacturer, QFN-14 package; fixed ±1.5g/±2g/±4g/±6g ranges; 300 μA active current; no Sleep Mode pin | Lacks dedicated Sleep Mode control - requires software-driven power cycling; smaller footprint but fewer pins for configuration | Select when board space is constrained and Sleep Mode timing control is not required. |
| ADXL322 | Analog Devices part; ±2g/±5g/±8g ranges; 600 μA active current; 3.3 V only; no g-Select pins - range set by external resistors | Requires external resistor network for range selection; higher noise floor (500 μg/√Hz vs. MMA6271QT's 350 μg/√Hz) | Select when legacy ADI ecosystem compatibility or single-supply 3.3 V operation is mandatory. |
Compared with MMA7260Q and ADXL322, the MMA6271QT uniquely combines pin-controlled g-range selection, explicit Sleep Mode activation, and wider supply voltage tolerance (2.2–3.6 V), enabling simpler power management and broader voltage-domain interoperability in portable designs.
Availability
MMA6271QT is available at Aetrix Electronics and suitable for laptop freefall protection, mobile phone motion UI, PDA tilt navigation, gaming event recording, and vibration monitoring requiring stable component supply across extended temperature ranges (–40°C to +105°C).
Supply support for MMA6271QT 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
Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and sensors, specializing in automotive, industrial, and consumer microelectromechanical systems.
The MMA6271QT belongs to Freescale's micromachined accelerometer product line, engineered specifically for cost-sensitive, battery-powered motion-sensing applications demanding factory-calibrated analog outputs and minimal external components.
FAQ
What is the operating temperature range for the MMA6271QT?
The MMA6271QT is specified for continuous operation from –40°C to +105°C. This extended industrial temperature range is validated per Table 2 in the datasheet and supports deployment in laptops, automotive infotainment, and ruggedized handheld devices where ambient conditions exceed commercial-grade limits. The MMA6271QT maintains calibrated performance across this range due to integrated temperature compensation circuits trimming both zero-g offset and sensitivity drift.
How does the g-Select feature work on the MMA6271QT?
The g-Select feature on the MMA6271QT uses two logic inputs (pins 1 and 2) to select among four full-scale ranges: ±2.5g, ±3.3g, ±6.7g, or ±10g. As shown in Table 3, specific binary combinations (e.g., g-Select1=0/g-Select2=0 selects ±2.5g at 480 mV/g sensitivity) configure internal gain stages. The MMA6271QT includes internal pull-downs so leaving both pins unconnected defaults to ±2.5g mode - simplifying designs requiring only one range.
Does the MMA6271QT require external components for filtering?
No, the MMA6271QT does not require external components for filtering. It integrates a 1-pole switched-capacitor low-pass filter with a typical –3 dB bandwidth of 350 Hz, as confirmed in Table 2. This eliminates the need for external RC networks or op-amps, reducing BOM count and PCB area. The filter cutoff is fixed and factory-trimmed - no external resistors or capacitors are needed to set or adjust it.
What is the Sleep Mode current consumption of the MMA6271QT?
The MMA6271QT draws 3 μA typical current in Sleep Mode, as specified in Table 2 under "Supply Current at Sleep Mode." This low quiescent current is achieved by disabling the output drivers and internal signal chain while retaining register state. To enter Sleep Mode, assert a logic low on pin 12 (Sleep Mode); recovery to active operation takes 0.5 ms, enabling rapid wake-on-motion functionality ideal for battery-constrained devices.
Is the MMA6271QT pin-compatible with other Freescale accelerometers like the MMA7260Q?
No, the MMA6271QT is not pin-compatible with the MMA7260Q. The MMA6271QT uses a 16-lead QFN package (case 1622-02) with dedicated g-Select1, g-Select2, and Sleep Mode pins, whereas the MMA7260Q uses a 14-lead QFN with different pin assignments and no discrete Sleep Mode control. Layout reuse between these parts is not possible without PCB revision, as confirmed by comparing Figures 1 and 4 in their respective datasheets.
MMA6271QT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 16-LQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y
- Acceleration Range:
- ±2.5g, 3.3g, 6.7g, 10g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 480 (±2.5g) ~ 120 (±10g)
- Bandwidth:
- 350Hz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.2V ~ 3.6V
- Features:
- Selectable Scale
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (6x6)
MMA6271QT FAQ
1.How can I place an order for MMA6271QT through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA6271QT 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 MMA6271QT reliable?
The price and inventory of MMA6271QT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA6271QT is usually 5 days.
3.What payment methods are accepted for MMA6271QT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA6271QT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA6271QT?
MMA6271QT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA6271QT 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 MMA6271QT?
For technical support, including MMA6271QT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA6271QT requirements.
6.How does Aetrix verify that MMA6271QT is sourced from the original manufacturer or authorized distributors?
All MMA6271QT 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 MMA6271QT meets industry standards.
7.What is the process for return or replacement of MMA6271QT?
All MMA6271QT units undergo pre-shipment inspection (PSI). If there is an issue with MMA6271QT, 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 MMA6271QT part is unused and in its original packaging.
Return procedure for MMA6271QT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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