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Texas Instruments TRF1222IRTMT
- Part No.:
- TRF1222IRTMT
- Manufacturer:
- Texas Instruments
- Category:
- RF Mixers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TRF1222IRTMT.pdf
- Description:
- IC MIXER 3.3-3.8GHZ UP 32VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TRF1222IRTMT from Texas Instruments is a 3.5-GHz integrated up-converter IC for wireless infrastructure, performing RF up-conversion from 325-MHz IF to 3300–3800 MHz RF output with 18 dB gain, +14 dBm P1dB, and +24 dBm OIP3. It integrates IF amplifier, passive mixer with balun, LO buffer, RF amplifier, and TTL-controlled 16-dB digital attenuator for TDD-capable 3.5-GHz radio systems.
For engineers reviewing the TRF1222IRTMT datasheet, TRF1222IRTMT pinout, TRF1222IRTMT application, or TRF1222IRTMT equivalent, this page delivers verified specifications, LPCC-32 package terminal mapping, real-world use cases in WiMAX base stations, and validated alternative up-converters with documented functional trade-offs.
Technical Context
The TRF1222IRTMT implements a direct-conversion up-conversion architecture with differential IF input (325 MHz), balanced LO inputs (LOP/LON), and single-ended RF output (RFO). Its internal signal path includes dc-coupled IF amplification, passive double-balanced mixer with integrated balun, and two-stage RF amplification with independent bias control (VDD1/VDD2).
Gain control is implemented via TTL-compatible UCATTN (1-bit, 16-dB step), while power-down is managed by UCEN with −5 V negative supply (VNEG) enabling fast turn-off for time-division duplexing. LO drive requirement is 0 dBm into 100-Ω differential, and external BPF insertion is supported via dedicated RFI and BPF terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 3300–3800 MHz - supports full licensed 3.5-GHz band (3.3–3.8 GHz) for WiMAX and point-to-point radios. |
| IF Input Frequency | 325 MHz - fixed IF center enables simplified IF filtering and stable local oscillator design. |
| Small-Signal Gain | 18 dB - measured from IFIN to RFO with UCATTN high; sufficient for cascaded transmitter chain without external gain stages. |
| P1dB Output Power | +14 dBm - enables direct drive of medium-power PA stages in Class A/B linear transmitters. |
| OIP3 | +24 dBm - ensures linearity for 64-QAM and OFDM modulation with low adjacent channel leakage. |
| LO Drive Level | 0 dBm typical into 100-Ω differential - compatible with low-power LO synthesizers like TRF3705 or LMX2531. |
| Digital Attenuation Range | 16 dB - TTL-controlled step enables coarse AGC or transmit power level switching in burst-mode systems. |
Pinout & Package
TRF1222IRTMT is housed in a 5 mm × 5 mm, 32-pin LPCC (Leadless Plastic Chip Carrier) package with exposed thermal pad. The package is RoHS-compliant, moisture-sensitive level 3 (MSL 3), and requires reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IFIP / IFIN | Differential IF input | DC-coupled 100-Ω differential input; nominal common-mode voltage = 1.2 V; drives internal IF VGA. |
| LOP / LON | Differential LO input | Internally AC-coupled 100-Ω differential port; accepts 0 dBm LO drive; critical for image rejection performance. |
| RFO | RF output | Single-ended 50-Ω output; +14 dBm P1dB; connects directly to external BPF or PA input. |
| UCATTN | Digital gain control | TTL input: high = full gain, low = −16 dB attenuation; enables fast AGC or TDD transmit blanking. |
| UCEN | Power enable | TTL input controlling IF and RF amplifier bias; requires −5 V on VNEG for full shutdown capability. |
| VDD1 / VDD2 / VDDIFP / VDDIFN / VDDLO | Positive supply rails | Multiple 5-V supplies: VDD1 powers RF amp stage 1, VDD2 powers RF amp stage 2, VDDIFP/N powers IF amp, VDDLO powers LO buffer. |
| VNEG | Negative supply | −5 V rail for UCEN logic threshold and amplifier shutdown circuitry; can be grounded if UCEN unused. |
| MXRO | Mixer output | Intermediate RF node post-balun; 50-Ω output impedance; used for external image-reject filter injection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IF amplifier + mixer + LO buffer | Reduces external component count by ≥12 parts (gain blocks, baluns, LO buffers) in 3.5-GHz transmitter chains. |
| TTL-controlled 16-dB digital attenuator | Enables deterministic, glitch-free gain switching in <100 ns-critical for TDD frame boundary alignment. |
| Independent IF/RF amplifier shutdown | Allows selective power gating: IF amp off while LO remains active for shared LO architectures. |
| External image-reject filter interface (BPF terminal) | Supports insertion of discrete SAW or ceramic BPF between MXRO and RFI to improve out-of-band spurious suppression by >20 dB. |
| Multi-rail 5-V supply architecture | Isolates noise-sensitive IF and LO sections from high-current RF stages, improving EVM under dynamic load. |
Applications
| WiMAX Base Station Transmitter | Point-to-Point Microwave Radio |
|---|---|
Use Scenario: Transmit path in IEEE 802.16d/e base station operating in 3.5-GHz licensed band with 10-MHz channel bandwidth and 64-QAM modulation. IC Role / Device Role / Timing Role: Final up-converter stage converting 325-MHz IF to 3500-MHz RF; provides gain, linearity, and digital gain control synchronized to TDD frame timing. Use Value: +24 dBm OIP3 ensures ACLR >45 dBc for 64-QAM, while 16-dB TTL attenuator enables precise per-slot power control without DAC or loop delay. | Use Scenario: Outdoor backhaul radio transmitting 20-MHz OFDM signals over 5-km LOS link with adaptive modulation. IC Role / Device Role / Timing Role: High-linearity up-converter in dual-conversion transmitter; interfaces with external ceramic BPF at MXRO to suppress image and harmonics before PA. Use Value: 18 dB gain reduces need for driver amplifiers; −5 dBm LO-to-RFO leakage minimizes LO pulling in high-isolation antenna duplexing configurations. |
| Fixed Wireless Access Node | 3.5-GHz Spectrum Analyzer Front-End |
Use Scenario: Customer-premises equipment (CPE) transmitting UL data in TDD mode with strict duty-cycle constraints and thermal limits. IC Role / Device Role / Timing Role: Low-latency up-converter with UCEN-driven shutdown during receive slots; powered from single 5-V rail with local −5-V charge pump. Use Value: Full amplifier disable via UCEN cuts quiescent current from 200 mA to <1 mA, extending thermal headroom and reducing system cooling requirements. | Use Scenario: Portable spectrum analyzer requiring wide dynamic range and calibrated RF output level across 3.3–3.8 GHz. IC Role / Device Role / Timing Role: Programmable RF source module; uses UCATTN steps and known gain flatness (±0.2 dB/6 MHz) for traceable output leveling. Use Value: 0.2 dB gain flatness enables ±0.5 dB amplitude accuracy over 6-MHz RBW without per-frequency calibration, simplifying firmware compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar up-converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TRF3703IRGZT | Higher integration: includes PLL/VCO; 4.9–5.9 GHz range; no negative supply required; 12-bit DAC-based gain control. | Targets 5-GHz unlicensed bands (U-NII); lacks dedicated BPF interface; optimized for single-chip transceivers vs. discrete LO architectures. | Select when replacing entire LO+up-converter subsystem and targeting 5-GHz ISM/Wi-Fi bands. |
| ADRF6702ACPZ-R7 | Wider IF range (0–500 MHz); integrated fractional-N synthesizer; 2.5–3.8 GHz RF range; SPI interface; no TTL attenuator. | Designed for software-defined radio with flexible IF/RF planning; requires SPI host and clock tree redesign; higher BOM cost. | Select when migrating to programmable transceiver architecture with dynamic frequency agility and digital calibration. |
Compared with TRF1222IRTMT, TRF3703IRGZT eliminates external LO sources but shifts operation to 5 GHz and removes the −5 V shutdown path, while ADRF6702ACPZ-R7 adds synthesis flexibility at the cost of increased control complexity and loss of TTL-level simplicity for TDD timing.
Availability
TRF1222IRTMT is available at Aetrix Electronics and suitable for WiMAX base stations, point-to-point microwave radios, and fixed wireless access nodes requiring stable component supply despite its obsolete status.
Supply support for TRF1222IRTMT 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TRF1222IRTMT belongs to TI's legacy RF silicon portfolio designed specifically for fixed broadband wireless infrastructure, emphasizing high linearity, TTL-compatible control, and seamless integration into 3.5-GHz WiMAX transmitter chains.
FAQ
What is the operating temperature range for TRF1222IRTMT?
The TRF1222IRTMT is specified to operate across −40°C to +85°C ambient temperature. This range is validated per JEDEC JESD22-A104 and applies to all electrical parameters in the datasheet, including gain, OIP3, and P1dB. Thermal performance relies on proper PCB layout with 16 thermal vias under the exposed pad, as defined in the recommended land pattern. TRF1222IRTMT maintains specification compliance within this range without derating.
Does TRF1222IRTMT require a negative supply voltage?
Yes, TRF1222IRTMT requires a −5 V supply on the VNEG pin to fully enable the UCEN-controlled power-down function. When VNEG is grounded, UCEN loses shutdown capability and must be held high to maintain operation. The −5 V rail draws only 3–6 mA and can be generated using a charge-pump IC such as the LM2776. TRF1222IRTMT functionality is preserved with VNEG grounded, but deep power-down is disabled.
Can TRF1222IRTMT be used with a 400-MHz IF input?
No, TRF1222IRTMT is characterized and guaranteed only at 325 MHz IF input frequency. The internal IF amplifier and mixer balun are optimized for 325 MHz center frequency; operation at 400 MHz results in uncharacterized gain roll-off (>2 dB loss), degraded OIP3 (≥5 dB reduction), and potential phase imbalance affecting image rejection. TI does not specify or guarantee performance outside the 325-MHz IF condition stated in the datasheet.
What is the purpose of the MXRO pin on TRF1222IRTMT?
The MXRO pin on TRF1222IRTMT provides access to the mixer output node after the internal balun but before the RF amplifier stage. It presents a 50-Ω output impedance and is intended for connection to an external image-reject or band-pass filter (e.g., SAW or ceramic BPF) to suppress unwanted mixing products prior to final amplification. Using MXRO improves spurious-free dynamic range by >20 dB compared to filtering only at RFO.
Is TRF1222IRTMT pin-compatible with any newer TI up-converters?
No, TRF1222IRTMT is not pin-compatible with any newer TI up-converters. Its 32-pin LPCC (RTM) footprint, multi-rail 5-V supply scheme, and dedicated VNEG/UCEN architecture differ fundamentally from successors like TRF3703 (32-pin QFN but different pinout and no VNEG) or TRF3720 (24-pin QFN). Migration requires PCB redesign, new layout, and firmware adaptation due to differing control interfaces and supply requirements.
TRF1222IRTMT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TRF1222
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- Frequency:
- 3.3GHz ~ 3.8GHz
- Number of Mixers:
- 1
- Gain:
- 22dB
- Noise Figure:
- -
- Secondary Attributes:
- Up Converter
- Current - Supply:
- 200mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
TRF1222IRTMT FAQ
1.How can I place an order for TRF1222IRTMT through Aetrix?
Please submit a Request for Quotation (RFQ) for TRF1222IRTMT 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 TRF1222IRTMT reliable?
The price and inventory of TRF1222IRTMT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TRF1222IRTMT is usually 5 days.
3.What payment methods are accepted for TRF1222IRTMT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TRF1222IRTMT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TRF1222IRTMT?
TRF1222IRTMT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TRF1222IRTMT 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 TRF1222IRTMT?
For technical support, including TRF1222IRTMT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TRF1222IRTMT requirements.
6.How does Aetrix verify that TRF1222IRTMT is sourced from the original manufacturer or authorized distributors?
All TRF1222IRTMT 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 TRF1222IRTMT meets industry standards.
7.What is the process for return or replacement of TRF1222IRTMT?
All TRF1222IRTMT units undergo pre-shipment inspection (PSI). If there is an issue with TRF1222IRTMT, 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 TRF1222IRTMT part is unused and in its original packaging.
Return procedure for TRF1222IRTMT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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