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Texas Instruments TRF1122IRTMR
- Part No.:
- TRF1122IRTMR
- Manufacturer:
- Texas Instruments
- Category:
- RF Mixers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TRF1122IRTMR.pdf
- Description:
- IC MIXER 2.1-2.7GHZ UP 32VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TRF1122IRTMR from Texas Instruments is a 2.5-GHz integrated up-converter IC for wireless infrastructure, performing RF up-conversion from 325-MHz IF to 2100–2700-MHz RF band with 20 dB gain, +14 dBm P-1 dB output, and +24 dBm OIP3. It integrates IF amplifier, double-balanced mixer, LO buffer, and RF amplifier in a single VQFN-32 package, supporting MDS/MMDS/WCS base stations.
For engineers reviewing the TRF1122IRTMR datasheet, TRF1122IRTMR pinout, TRF1122IRTMR application, or TRF1122IRTMR equivalent, key selection criteria include its differential 100-Ω IF/LO impedance, TTL-controlled 16-dB switched attenuator, dual ±5-V supply operation, and requirement for external image-reject BPF with ≤2-dB insertion loss.
Technical Context
The TRF1122IRTMR implements a direct-conversion up-conversion architecture with internal balun between mixer output (MXRO) and RF amplifier input (RFI), enabling single-ended RF output (RFO) while accepting differential IF (IFIN/IFIP) and LO (LOP/LON) inputs. Its gain path splits into IF-stage (1 dB gain to MXRO) and RF-stage (19 dB gain from RFI to RFO), with independent bias control via VDDIFP/VDDIFN/VDDLO/VDD1/VDD2 and VNEG.
Power management is implemented via TTL-compatible UCEN (enable/disable IF+RF amplifiers) and UCATTN (high-gain/low-gain mode), with thermal performance dependent on grounding the metal base via 16 thermal vias per TI's recommended PCB layout. The device operates across –40°C to +85°C with total IDD of 185 mA at 5 V and INEG of ±6 mA at –5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 2100–2700 MHz - supports full WCS/MDS band without tuning; requires external BPF for image rejection. |
| IF Input Frequency | 325 MHz - fixed IF center; differential 100-Ω input with DC-coupled bias (1.2 V typical). |
| Gain | 20 dB typical - achieved with UCATTN high; includes 1 dB mixer-to-RF-path gain and 19 dB RF amplifier gain. |
| OIP3 | +24 dBm typical - enables linear operation with high-order QAM/OFDM modulation schemes. |
| P-1 dB Output | +14 dBm typical - sufficient to drive power amplifier stages in 2.5-GHz radio front-ends. |
| LO Drive Level | 0 dBm typical - low LO power requirement reduces need for LO buffer gain staging. |
| Supply Voltages | +5 V (VDD1/VDD2/VDDIFP/VDDIFN/VDDLO) and –5 V (VNEG) - dual-rail operation enables high-linearity active devices. |
Pinout & Package
TRF1122IRTMR is housed in a 5 mm × 5 mm, 32-pin VQFN (RTM) package with exposed thermal pad requiring grounding via ≥16 thermal vias. Pin 1 is marked by dot; backside metal base must be soldered to ground plane for thermal dissipation (θJC = 9.01°C/W) and RF stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IADJ (1) | Analog bias adjustment | Unused in normal operation; floating or open - grounding degrades RF amplifier linearity. |
| VDD2 (2) | Power supply | +5 V bias for RF amplifier stage 2; decoupling required near pin. |
| GND (3,5,9,11,15,16,21,28–30,32) | Ground reference | Multiple dedicated GND pins ensure low-impedance return paths for RF, IF, LO, and digital sections. |
| UCATTN (4) | Digital control input | TTL-level gain control: high = 20 dB gain, low = 4 dB gain (16 dB attenuation applied). |
| RFO (6) | RF output | Single-ended 50-Ω RF output; matches standard PA input impedance; requires 50-Ω trace routing. |
| VNEG (8) | Negative power supply | –5 V rail for enable circuitry; if unused, tie high via UCEN and ground VNEG to disable negative bias dependency. |
| LOP/LON (12,13) | Differential LO input | AC-coupled 100-Ω differential LO port; accepts 0 dBm drive; return loss >10 dB across band. |
| VDDLO (14) | LO amplifier supply | +5 V for internal LO buffer; separate from RF/IF supplies to minimize supply coupling. |
| IFIP/IFIN (19,20) | Differential IF input | DC-coupled 100-Ω differential IF port; common-mode voltage = 1.2 V; requires matched trace lengths. |
| MXRO (22) | Mixer output | Differential 50-Ω output post-balun; connects internally to RFI; accessible for external filtering or monitoring. |
| UCEN (23) | Digital enable input | TTL-level master enable: high = IF+RF amplifiers active, low = full shutdown for TDD power saving. |
| MXRADJ (24) | Analog bias adjustment | Must be grounded via 0 Ω jumper; floating or biased causes mixer conversion loss degradation. |
| VDDIF (26) | IF bias supply | +5 V for IF amplifier bias circuitry; distinct from VDDIFP/VDDIFN which power active IF core. |
| RFI (27) | RF amplifier input | 50-Ω single-ended input from MXRO; AC-coupled; sensitive to layout parasitics due to high gain. |
| VDD1 (31) | RF amplifier supply | +5 V bias for RF amplifier stage 1; decoupling critical to suppress supply noise coupling into RF path. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IF amplifier + mixer + LO buffer + RF amplifier | Reduces bill-of-materials and board area vs. discrete up-converter solutions; eliminates inter-stage matching networks. |
| TTL-switched 16-dB attenuator (UCATTN) | Enables fast, digital gain control without analog voltage DACs or external attenuators - ideal for AGC loops. |
| TTL-controlled amplifier shutdown (UCEN) | Supports time-division duplex (TDD) operation with <1 µs enable/disable transition; cuts total current from 185 mA to <1 mA. |
| Differential 100-Ω IF and LO interfaces | Improves noise immunity and common-mode rejection; simplifies interface to baseband transceivers with differential outputs. |
| External BPF signal path support | Provides dedicated pins (MXRO → external filter → RFI) to insert image-reject or channel-select BPF without modifying IC routing. |
Applications
| WCS Base Station Transmitter | MDS/MMDS Subscriber Unit |
|---|---|
Use Scenario: Up-converting 325-MHz IF signals to 2500-MHz WCS band for outdoor point-to-multipoint links. IC Role / Device Role / Timing Role: Final-stage up-converter delivering +14 dBm RF output to driver amplifier; handles QPSK/16-QAM modulation. Use Value: 20 dB gain and +24 dBm OIP3 ensure EVM compliance under multi-carrier loading; UCEN enables burst-mode transmit power gating. | Use Scenario: Compact indoor CPE unit converting baseband IF to 2.5-GHz MDS downlink band with minimal external components. IC Role / Device Role / Timing Role: Single-chip IF-to-RF up-converter with integrated LO buffer; replaces discrete mixer + amplifier + filter chain. Use Value: Differential IF/LO ports simplify connection to ADI/Maxim transceivers; 5 mm × 5 mm VQFN eases thermal design in space-constrained enclosures. |
| Wireless Backhaul Radio | Fixed Wireless Access Node |
Use Scenario: Medium-capacity 2.5-GHz licensed backhaul link operating in 2100–2700 MHz spectrum with OFDM modulation. IC Role / Device Role / Timing Role: High-linearity up-converter stage preceding PA; accepts 0 dBm LO drive to reduce local oscillator complexity. Use Value: +14 dBm P-1 dB output drives Class AB PAs directly; 0.2 dB gain flatness over 6 MHz ensures channel uniformity in wideband OFDM. | Use Scenario: Fixed wireless access node serving rural broadband using 2.5-GHz spectrum with TDD-based air interface. IC Role / Device Role / Timing Role: Dual-function up-converter with programmable gain and rapid enable/disable for TDD frame alignment. Use Value: UCATTN and UCEN pins synchronized to TDD timing controller reduce system power by >70% during receive slots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar up-converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX2029ETE+ | 3.3-V single-supply operation; 2.3–2.7 GHz RF range; 17 dB gain; no integrated LO buffer. | Requires external LO amplifier; lower supply voltage simplifies power tree but reduces OIP3 (+20 dBm). | Select when 3.3-V system integration and smaller footprint (4×4 mm TQFN) outweigh need for higher linearity. |
| ADL5375-05 | Wideband IQ modulator (70–1000 MHz IF); 2.7–3.8 GHz RF; +19.5 dBm P-1 dB; requires external LO. | Supports complex modulation via I/Q inputs; not pin-compatible; needs baseband DAC and LO synthesis. | Select for software-defined radio or multi-band systems where flexible IF bandwidth and IQ architecture justify redesign. |
Compared with MAX2029ETE+ and ADL5375-05, the TRF1122IRTMR delivers higher OIP3 and integrated LO buffering at the cost of dual ±5-V supplies and fixed 325-MHz IF - making it optimal for cost-sensitive, high-linearity 2.5-GHz fixed infrastructure where IF architecture is standardized.
Availability
TRF1122IRTMR is available at Aetrix Electronics and suitable for WCS base station transmitters, MDS subscriber units, wireless backhaul radios, and fixed wireless access nodes requiring stable component supply through extended product lifecycles.
Supply support for TRF1122IRTMR 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, specializing in analog, embedded processing, and wireless connectivity solutions for industrial, automotive, and communications markets.
The TRF1122IRTMR belongs to TI's RF up-converter product line, designed specifically for 2.5-GHz wireless infrastructure applications including MDS, MMDS, and WCS systems requiring high linearity, integrated functionality, and simplified RF front-end design.
FAQ
What is the recommended power supply configuration for TRF1122IRTMR?
The TRF1122IRTMR requires dual-rail supplies: +5 V (VDD1, VDD2, VDDIFP, VDDIFN, VDDLO, VDDIF) and –5 V (VNEG). All positive rails must be independently decoupled with 100 pF and 0.01 µF capacitors close to each pin. VNEG may be grounded only if UCEN is held high to disable negative-bias dependency - otherwise, –5 V must be supplied to maintain specified linearity and gain.
Does TRF1122IRTMR support DC-coupled IF input?
Yes, TRF1122IRTMR supports DC-coupled differential IF input on pins IFIN and IFIP, with a nominal common-mode voltage of 1.2 V. This allows direct interface to baseband transceivers without AC-coupling capacitors, reducing component count and phase skew. However, external DC blocking is required if the source does not match this bias point.
What is the function of the MXRO pin on TRF1122IRTMR?
The MXRO pin on TRF1122IRTMR provides the differential output of the internal mixer after the on-chip balun, presenting a 50-Ω impedance with high-impedance DC ground. It is intended for connection to an external band-pass filter before feeding the RF amplifier input (RFI), enabling precise image rejection outside the 2100–2700 MHz band.
Can TRF1122IRTMR operate with a single 5-V supply?
No, TRF1122IRTMR cannot operate with a single 5-V supply. Its internal amplifier stages require both +5 V and –5 V rails for proper biasing and linearity. Attempting to run with only +5 V (and grounded VNEG) will result in failure to meet specified OIP3, gain, and P-1 dB performance - as confirmed by TI's absolute maximum ratings and electrical characteristics tables.
Is TRF1122IRTMR suitable for new designs?
No, TRF1122IRTMR is marked "Not Recommended For New Designs" and is in LIFEBUY status per TI's packaging addendum. While fully functional and supported for existing production, TI advises new designs to consider newer-generation up-converters such as the TRF3705 or AFE7xxx family for improved integration, efficiency, and long-term availability.
TRF1122IRTMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TRF1122
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- MDS, MMDS, WCS
- Frequency:
- 2.1GHz ~ 2.7GHz
- Number of Mixers:
- 1
- Gain:
- 20dB
- Noise Figure:
- -
- Secondary Attributes:
- Up Converter
- Current - Supply:
- 185mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
TRF1122IRTMR FAQ
1.How can I place an order for TRF1122IRTMR through Aetrix?
Please submit a Request for Quotation (RFQ) for TRF1122IRTMR 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 TRF1122IRTMR reliable?
The price and inventory of TRF1122IRTMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TRF1122IRTMR is usually 5 days.
3.What payment methods are accepted for TRF1122IRTMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TRF1122IRTMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TRF1122IRTMR?
TRF1122IRTMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TRF1122IRTMR 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 TRF1122IRTMR?
For technical support, including TRF1122IRTMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TRF1122IRTMR requirements.
6.How does Aetrix verify that TRF1122IRTMR is sourced from the original manufacturer or authorized distributors?
All TRF1122IRTMR 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 TRF1122IRTMR meets industry standards.
7.What is the process for return or replacement of TRF1122IRTMR?
All TRF1122IRTMR units undergo pre-shipment inspection (PSI). If there is an issue with TRF1122IRTMR, 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 TRF1122IRTMR part is unused and in its original packaging.
Return procedure for TRF1122IRTMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TRF1122IRTMR Tags
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