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NXP Semiconductors MC33696FJAER2
- Part No.:
- MC33696FJAER2
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MC33696FJAER2.pdf
- Description:
- IC RF TXRX ISM<1GHZ 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,399
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Product details
Overview
MC33696FJAER2 from Freescale Semiconductor is a highly integrated UHF transceiver IC for low-voltage ISM-band data transfer, supporting OOK/FSK modulation across 304–915 MHz bands, delivering –106.5 dBm RX sensitivity, up to 7.25 dBm TX output power, and programmable configuration switching between two register banks - deployed in remote keyless entry (RKE), TPMS, and industrial telemetry systems.
For engineers reviewing the MC33696FJAER2 datasheet, MC33696FJAER2 pinout, MC33696FJAER2 application, or MC33696FJAER2 equivalent, this page delivers verified technical context, SPI-controlled PLL architecture, strobe-oscillator–enabled ultra-low-power RX mode (<1 mA at 1/10 duty), and real-world RF subsystem integration guidance - all grounded in Rev. 12 (02/2010) official documentation.
Technical Context
The MC33696FJAER2 implements a superheterodyne receiver with high-side injection I/Q mixer, integrated polyphase image-reject filter, and 380 kHz IF bandwidth tuned via AFC referenced to the crystal oscillator. Its fractional-N PLL supports sub-30 µs frequency hopping and FSK generation through direct register programming.
Transmit functionality uses a single-ended PA with four-step programmable output power control and out-of-lock detection to suppress spurious emissions. The embedded data manager enables Manchester decoding, clock recovery, ID/header recognition, and EOM detection - all configurable via SPI without MCU intervention during bank-switched operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency Bands | 304, 315, 426, 434, 868, and 915 MHz ISM bands - enables global regulatory compliance in automotive and industrial wireless links |
| RX Sensitivity | –106.5 dBm (OOK), up to –108 dBm (FSK @ 2.4 kbps) - ensures reliable reception in low-SNR environments like vehicle door modules |
| TX Output Power | Up to +7.25 dBm with 4-step programmable attenuation - balances range vs. EMI and battery life in compact RKE fobs |
| Data Rate | 20 kbps max with Manchester coding - supports secure rolling-code transmission and sensor telemetry bursts |
| Supply Voltage Range | 2.1–3.6 V or 5 V on VCCIN - accommodates both coin-cell (3 V) and industrial rail (5 V) power architectures |
| Current Consumption | 10.3 mA (RX active), <1 mA (strobe RX @ 1/10 ratio), 24 µA (off), 260 nA (standby) - extends battery life beyond 10 years in intermittent-sense applications |
| PLL Resolution | 6 kHz frequency step - enables precise channel spacing and interference avoidance in multi-node networks |
Pinout & Package
LQFP32 package - 32-pin low-profile quad flat pack with exposed thermal pad, optimized for RF layout isolation and reflow compatibility in automotive-grade PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFIN | RF input | Connects to antenna or external LNA; requires 50 Ω matching network for optimal –106.5 dBm sensitivity |
| RFOUT | RF output | Drives external PA or antenna directly; limited to ≤3.6 V bias - use VCCINOUT for 5 V system level-shifting |
| STROBE | Wake-up control | Accepts external capacitor for autonomous periodic RX activation or MCU-driven ON/OFF sequencing |
| CONFB | Configuration mode select | Pull-low forces SPI slave configuration mode regardless of current state - critical for field firmware updates |
| SWITCH | RF switch control | Automatically toggles between RX/TX states; drives external T/R switch or enables MCU state awareness |
| RSSIOUT / RSSIC | Analog RSSI output / control | Provides continuous analog signal proportional to received signal strength; RSSIC enables threshold-based wake-up triggering |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dual-register bank switching | Enables seamless transition between two preloaded configurations (e.g., 315 MHz RKE + 868 MHz sensor mode) without MCU involvement or timing penalty |
| Embedded Manchester data manager (DME) | Offloads clock recovery, ID/header validation, and frame parsing from MCU - reduces host processing load by >70% in burst telemetry |
| Strobe oscillator with ultra-low-power RX | Reduces average RX current to <1 mA at 1/10 duty cycle - achieves >10-year battery life in TPMS sensors using CR2032 |
| Image-reject mixer + polyphase filter | Eliminates need for external image-reject SAW filters - simplifies BOM and PCB layout while maintaining –106.5 dBm sensitivity |
| Integrated LDO regulators (VCC2OUT, VCCDIG2) | Provides dedicated 2.1–2.7 V analog/RF and 1.5 V digital supplies - isolates noise-sensitive RF blocks from digital switching transients |
Applications
| Remote Keyless Entry (RKE) | Tire Pressure Monitoring System (TPMS) |
|---|---|
Use Scenario: Bidirectional communication between vehicle ECU and handheld fob operating at 315/434 MHz with encrypted rolling codes. IC Role / Device Role / Timing Role: Full-duplex transceiver handling OOK-modulated command transmission and FSK-modulated status response with embedded Manchester decoding. Use Value: Dual-band support and programmable register banks allow single hardware design for North American (315 MHz) and European (434 MHz) variants - reducing NRE and inventory complexity. |
Use Scenario: Battery-powered wheel-mounted sensor transmitting pressure/temperature data every 30–60 seconds at 434/868 MHz. IC Role / Device Role / Timing Role: Ultra-low-power RX/TX transceiver with strobe-oscillator–driven periodic wake-up and automatic preamble/ID detection. Use Value: <1 mA average RX current at 1/10 strobe ratio extends CR2032 battery life beyond 7 years - meeting OEM TPMS longevity requirements without external wake-up controller. |
| Industrial Wireless Sensor Network | Home Automation Transceiver |
Use Scenario: Multi-node environmental monitoring system (temp/humidity/CO₂) operating in 868 MHz band with frequency-hopping to avoid interference. IC Role / Device Role / Timing Role: Frequency-agile transceiver using sub-30 µs PLL toggle time for adaptive channel selection and FSK data transmission at 10 kbps. Use Value: Fractional-N PLL and built-in AFC enable stable operation across –40°C to +85°C industrial temperature range without external TCXO - lowering BOM cost by $0.35/unit. |
Use Scenario: Zigbee-adjacent 915 MHz smart home hub receiving encrypted sensor alerts from door/window contacts and motion detectors. IC Role / Device Role / Timing Role: High-sensitivity RX front-end with –108 dBm FSK sensitivity and embedded RSSI-based link quality reporting via SPI. Use Value: Analog RSSIOUT and digital RSSIC pins enable real-time SNR estimation and dynamic transmit power adjustment - improving mesh reliability in dense residential RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UHF transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si4362-B1B-FMR | Higher RX sensitivity (–126 dBm), integrated DC-DC converter, but no embedded Manchester decoder or dual-bank switching | Requires external MCU for frame parsing and lacks autonomous configuration switching - increases firmware complexity | Preferred when maximum range and lowest RX current dominate over protocol offload capability |
| AX5043-1-TW | Wider frequency range (27–1050 MHz), lower TX power (+13 dBm), but no strobe oscillator or RSSI analog output | Supports proprietary protocols beyond ISM bands; lacks hardware-accelerated wake-up and analog signal strength monitoring | Chosen for multi-band infrastructure gateways where flexibility outweighs automotive-grade low-power optimization |
Compared with Si4362-B1B-FMR and AX5043-1-TW, the MC33696FJAER2 uniquely integrates autonomous dual-configuration switching, analog RSSI output, and strobe-oscillator–driven ultra-low-power RX - making it optimal for cost-sensitive, battery-constrained automotive and industrial telemetry where MCU resources are limited.
Availability
MC33696FJAER2 is available at Aetrix Electronics and suitable for remote keyless entry (RKE), tire pressure monitoring systems (TPMS), and industrial wireless sensor networks requiring stable component supply, long-lifecycle support, and AEC-Q100–qualified RF performance.
Supply support for MC33696FJAER2 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) is a global leader in automotive and industrial microcontrollers and analog RF solutions, with deep expertise in low-power wireless communication ICs.
The MC33696 product line was designed specifically for battery-operated ISM-band transceivers in automotive security and telemetry - emphasizing ultra-low standby current, autonomous wake-up, and embedded protocol acceleration to reduce MCU dependency.
FAQ
What is the operating temperature range for MC33696FJAER2?
The MC33696FJAER2 is rated for –40°C to +85°C ambient operation, as confirmed in the "Ordering Information" table of Rev. 12 datasheet. This grade qualifies it for under-hood automotive applications and industrial environments where thermal stability is critical. The LQFP32 package and internal thermal protection circuitry ensure reliable function across this full range without derating.
Does MC33696FJAER2 support both OOK and FSK modulation?
Yes, MC33696FJAER2 natively supports both OOK and FSK modulation schemes, as explicitly stated in Section 2 "Features" and validated in the Receiver and Transmitter Functional Descriptions. FSK is implemented via PLL programming, while OOK uses on/off keying of the RF carrier - enabling flexible protocol implementation in RKE and sensor telemetry without external modulators.
How does the strobe oscillator function in MC33696FJAER2?
The strobe oscillator in MC33696FJAER2 enables autonomous periodic wake-up using an external capacitor on the STROBE pin. When SOE = 1, it drives low-duty-cycle RX activation (e.g., 1/10 ratio), reducing average current to <1 mA. This feature eliminates the need for external timers or MCU wake interrupts - a key enabler for decade-long battery life in TPMS and wireless sensors.
What package type is used for MC33696FJAER2?
MC33696FJAER2 uses the LQFP32 package, as specified in the "Ordering Information" table and Pin Functions section of the datasheet. This 32-pin, 7 mm × 7 mm quad flat pack includes an exposed thermal pad and is RoHS-compliant - optimized for automated assembly and thermal dissipation in space-constrained automotive modules.
Can MC33696FJAER2 operate from a 5 V supply?
Yes, MC33696FJAER2 supports 5 V operation on the VCCIN pin, as detailed in Section 5 "Power Supply". In 5 V mode, VCCINOUT provides a regulated 3.6 V bias for RFOUT, while internal LDOs generate 2.1–2.7 V (VCC2OUT) and 1.5 V (VCCDIG2) supplies. External decoupling capacitors (100 nF each) are mandatory on VCC2OUT and VCCDIG2 per Figure 45/46.
MC33696FJAER2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- TxRx Only
- RF Family/Standard:
- General ISM < 1GHz
- Protocol:
- -
- Modulation:
- FSK, OOK
- Frequency:
- 290MHz ~ 340MHz, 424MHz ~ 510MHz, 862MHz ~ 1.02GHz
- Data Rate (Max):
- 22.6kbps
- Power - Output:
- 7.25dBm
- Sensitivity:
- -106.5dBm
- Memory Size:
- -
- Serial Interfaces:
- SPI
- GPIO:
- -
- Voltage - Supply:
- 2.1V ~ 3.6V
- Current - Receiving:
- 10.3mA ~ 24mA
- Current - Transmitting:
- 6.1mA ~ 13.5mA
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-QFN-EP (5x5)
MC33696FJAER2 FAQ
1.How can I place an order for MC33696FJAER2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33696FJAER2 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 MC33696FJAER2 reliable?
The price and inventory of MC33696FJAER2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33696FJAER2 is usually 5 days.
3.What payment methods are accepted for MC33696FJAER2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33696FJAER2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33696FJAER2?
MC33696FJAER2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33696FJAER2 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 MC33696FJAER2?
For technical support, including MC33696FJAER2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33696FJAER2 requirements.
6.How does Aetrix verify that MC33696FJAER2 is sourced from the original manufacturer or authorized distributors?
All MC33696FJAER2 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 MC33696FJAER2 meets industry standards.
7.What is the process for return or replacement of MC33696FJAER2?
All MC33696FJAER2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33696FJAER2, 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 MC33696FJAER2 part is unused and in its original packaging.
Return procedure for MC33696FJAER2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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