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NXP Semiconductors MMA7260QT
- Part No.:
- MMA7260QT
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 16-LQFN Exposed Pad
- Datasheet:
-
MMA7260QT.pdf
- Description:
- ACCEL 1.5-6G ANALOG 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,347
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Product details
Overview
MMA7260QT from Freescale Semiconductor is a ±1.5g/±2g/±4g/±6g three-axis capacitive micromachined accelerometer with integrated signal conditioning, factory-trimmed zero-g offset and full-scale span, 1-pole switched-capacitor low-pass filter, temperature compensation, and g-Select sensitivity configuration. It delivers ratiometric analog outputs (XOUT/YOUT/ZOUT), operates from 2.2 V to 3.6 V, draws 500 µA active current or 3 µA in Sleep Mode, and is housed in a 6 mm × 6 mm × 1.45 mm QFN-16 package.
For engineers reviewing the MMA7260QT datasheet, MMA7260QT pinout, MMA7260QT application, or MMA7260QT equivalent, this page provides verified technical context, pin-level circuit roles, real-world use cases in motion-sensitive portable electronics, and validated alternative options for freefall detection, tilt compensation, and motion-triggered user interfaces.
Technical Context
The MMA7260QT integrates dual surface-micromachined polysilicon g-cells per axis with an ASIC that performs capacitance-to-voltage conversion using switched-capacitor techniques. Its internal oscillator drives a 11 kHz sampling clock, enabling a 350 Hz XY-axis and 150 Hz Z-axis bandwidth without external components.
g-Select logic on pins 1 and 2 configures gain to deliver 800 mV/g (1.5g), 600 mV/g (2g), 300 mV/g (4g), or 200 mV/g (6g) sensitivity; Sleep Mode activation on pin 12 disables output drivers and reduces current to 3 µA typical while preserving configuration state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Acceleration Range | ±1.5g / ±2g / ±4g / ±6g - selectable via g-Select pins; enables optimization for high-sensitivity (e.g., pedometer) or high-range (e.g., shock detection) use cases |
| Supply Voltage | 2.2 V – 3.6 V - supports single-cell Li-ion and Li-polymer battery operation without regulation |
| Active Current | 500 µA typical - allows >100-hour operation on a 50 mAh coin cell in periodic-sampling systems |
| Sleep Current | 3 µA typical - extends battery life in always-on motion-wake applications like laptop freefall protection |
| Output Type | Ratiometric analog voltage (XOUT/YOUT/ZOUT) - scales linearly with VDD, eliminating need for separate reference in MCU ADC interfacing |
| Bandwidth | XY: 350 Hz, Z: 150 Hz - sufficient for human-motion detection (0.1–10 Hz) with margin against aliasing from internal 11 kHz sampling |
| Zero-g Output | 1.65 V at VDD = 3.3 V - centered at midsupply, enabling bidirectional acceleration measurement with single-supply ADC |
Pinout & Package
Package: 16-lead QFN (6 mm × 6 mm × 1.45 mm), case 1622-02, Pb-free terminations, exposed die pad internally connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (g-Select1) | Logic input | Selects sensitivity range with g-Select2; 0 = 1.5g/2g mode, 1 = 4g/6g mode; internal pull-down defaults to 1.5g if unconnected |
| 2 (g-Select2) | Logic input | Selects sensitivity range with g-Select1; 00 = 1.5g (800 mV/g), 11 = 6g (200 mV/g); no external pull-up/down required |
| 3 (VDD) | Power supply input | 2.2–3.6 V analog/digital supply; requires ≤0.1 ms rise time to ensure reliable startup |
| 4 (VSS) | Ground reference | Analog and digital ground; tied internally to exposed die pad; must connect to solid ground plane |
| 12 (Sleep Mode) | Logic input | Low-active enable for Sleep Mode; transitions output drivers off within 2 ms, reducing current to 3 µA |
| 13 (ZOUT) | Analog output | Z-axis acceleration voltage (ratiometric, 0.85–2.45 V for ±1g at 3.3 V); requires RC filter (1 kΩ + 0.1 µF) to suppress switched-capacitor noise |
| 14 (YOUT) | Analog output | Y-axis acceleration voltage (same ratiometric behavior and filtering requirement as ZOUT) |
| 15 (XOUT) | Analog output | X-axis acceleration voltage (same ratiometric behavior and filtering requirement as ZOUT) |
Key Features
| Feature | Design Value |
|---|---|
| Factory-calibrated full-scale and zero-g offset | Eliminates need for system-level calibration or external trim components; valid across –40°C to +105°C |
| Integrated 1-pole switched-capacitor low-pass filter | Provides fixed 350 Hz (XY) / 150 Hz (Z) cutoff without external resistors or capacitors, reducing BOM count and layout area |
| Temperature-compensated sensing elements | Maintains <±0.02 mg/°C zero-g drift and stable sensitivity across industrial temperature range |
| Robust mechanical design | Withstands ±5000 g shock and 1.8 m concrete drop - suitable for handheld consumer devices subject to impact |
| Pb-free, environmentally preferred packaging | RoHS-compliant QFN-16 with NiPdAu finish; compatible with lead-free reflow profiles up to 260°C |
Applications
| Laptop Freefall Protection | HDD MP3 Player Freefall Detection |
|---|---|
Use Scenario: Detects sudden vertical acceleration loss during accidental drop to park HDD heads before impact. IC Role / Device Role / Timing Role: Three-axis analog accelerometer providing real-time g-force vector magnitude and direction for firmware-based freefall decision logic. Use Value: Enables sub-10 ms response to 2g+ transient events, meeting SATA/IDE head-parking safety requirements without external processing overhead. |
Use Scenario: Triggers protective shutdown of flash memory controller and audio playback when device is dropped. IC Role / Device Role / Timing Role: Low-power motion sensor delivering ratiometric analog outputs directly to microcontroller ADC inputs. Use Value: Sleep Mode current of 3 µA extends standby battery life to >1 year in always-ready portable audio players. |
| Smartphone Motion UI | Pedometer Activity Tracking |
Use Scenario: Enables text scrolling, motion dialing, and e-compass tilt compensation in mobile handsets. IC Role / Device Role / Timing Role: High-sensitivity (800 mV/g @ 1.5g) analog interface for detecting subtle wrist and device orientation changes. Use Value: 1.5g range and 4.7 mVrms noise floor support accurate gesture recognition down to 0.05g resolution in handheld use. |
Use Scenario: Counts steps by detecting vertical hip acceleration peaks during walking/running cycles. IC Role / Device Role / Timing Role: Low-drift, temperature-stable analog sensor feeding peak-detection algorithm in wearable MCU firmware. Use Value: Factory-trimmed zero-g offset (<±0.8 mV/°C) ensures consistent step-count accuracy across ambient temperatures from –10°C to +45°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-axis analog accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL335BCPZ | Wider supply range (1.8–3.6 V), higher noise (800 µg/√Hz), no g-Select or Sleep Mode; 3.3 mm × 3.3 mm LFCSP package | Lacks configurable sensitivity and ultra-low-power sleep state; better suited for space-constrained, always-on industrial sensors | Choose ADXL335BCPZ when board area is critical and power budget allows >350 µA continuous draw. |
| KXSC7-2050 | Digital I²C/SPI output, 2.18 V–3.6 V supply, 10 µA sleep current, ±2g/±4g/±8g ranges; 2 mm × 2 mm LGA package | Requires MCU with digital interface; eliminates analog filtering but adds firmware complexity for data parsing and self-test | Choose KXSC7-2050 when digital integration, lower sleep current, or smaller footprint outweighs need for analog simplicity. |
Compared with ADXL335BCPZ and KXSC7-2050, the MMA7260QT uniquely balances analog interface simplicity, four-range g-Select flexibility, and 3 µA sleep current in a cost-optimized QFN package-making it optimal for battery-powered consumer motion UI where analog ADC resources are available and layout space is moderate.
Availability
MMA7260QT is available at Aetrix Electronics and suitable for laptop freefall protection, smartphone motion UI, and pedometer activity tracking requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for MMA7260QT 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, analog, and sensor ICs, focused on automotive, industrial, and consumer applications.
The MMA7260QT belongs to Freescale's MEMS accelerometer product line, engineered specifically for low-cost, low-power motion sensing in battery-operated portable electronics such as laptops, mobile phones, and portable media players.
FAQ
What is the operating temperature range for the MMA7260QT?
The MMA7260QT is specified to operate from –40°C to +105°C. This industrial-grade range ensures reliable performance in demanding environments such as inside laptops under CPU thermal load or in automotive infotainment mounts exposed to cabin temperature extremes. All key parameters-including zero-g offset, sensitivity, and bandwidth-are guaranteed across this full range.
How does the g-Select feature work on the MMA7260QT?
The MMA7260QT uses two logic inputs-g-Select1 (pin 1) and g-Select2 (pin 2)-to configure its full-scale range among ±1.5g, ±2g, ±4g, or ±6g. With g-Select1=0/g-Select2=0, sensitivity is 800 mV/g; with both high (1/1), it drops to 200 mV/g. The pins can be left unconnected for default 1.5g operation due to internal pull-downs, simplifying designs needing only one range.
What is the purpose of the Sleep Mode on the MMA7260QT?
Sleep Mode on the MMA7260QT reduces supply current from 500 µA to 3 µA typical by disabling internal amplifiers and output drivers while retaining configuration state. Activated by pulling pin 12 (Sleep Mode) low, it enables extended battery life in motion-wake systems-such as laptop freefall detection-where the device spends most time idle but must respond rapidly to acceleration events.
Does the MMA7260QT require external components for basic operation?
No external components are required for core operation of the MMA7260QT: zero-g offset, full-scale span, and filter cutoff are factory-set. However, Freescale recommends a 1 kΩ resistor and 0.1 µF capacitor on each analog output (XOUT/YOUT/ZOUT) to suppress switched-capacitor filter noise, and a fast-rising VDD supply (<0.1 ms) to ensure reliable startup-both documented in the official datasheet Rev 5.
Is the MMA7260QT pin-compatible with other Freescale accelerometers like the MMA7261Q?
No, the MMA7260QT is not pin-compatible with the MMA7261Q. While both are QFN-16 accelerometers, the MMA7261Q features different pin assignments-including dedicated self-test and interrupt outputs-and lacks the g-Select configuration scheme of the MMA7260QT. Direct replacement would require PCB layout revision and firmware adaptation.
MMA7260QT 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, Z
- Acceleration Range:
- ±1.5g, 2g, 4g, 6g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 800 (±1.5g) ~ 200 (±6g)
- Bandwidth:
- 350Hz (X,Y), 150Hz (Z)
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.2V ~ 3.6V
- Features:
- Selectable Scale, Sleep Mode
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (6x6)
MMA7260QT FAQ
1.How can I place an order for MMA7260QT through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA7260QT 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 MMA7260QT reliable?
The price and inventory of MMA7260QT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA7260QT is usually 5 days.
3.What payment methods are accepted for MMA7260QT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA7260QT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA7260QT?
MMA7260QT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA7260QT 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 MMA7260QT?
For technical support, including MMA7260QT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA7260QT requirements.
6.How does Aetrix verify that MMA7260QT is sourced from the original manufacturer or authorized distributors?
All MMA7260QT 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 MMA7260QT meets industry standards.
7.What is the process for return or replacement of MMA7260QT?
All MMA7260QT units undergo pre-shipment inspection (PSI). If there is an issue with MMA7260QT, 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 MMA7260QT part is unused and in its original packaging.
Return procedure for MMA7260QT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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