My Inquiry
My Account
Qorvo RFSA3043TR7
- Part No.:
- RFSA3043TR7
- Manufacturer:
- Qorvo
- Category:
- Attenuators
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
RFSA3043TR7.pdf
- Description:
- CATV VOLTAGE CONTROLLED ATTENUAT
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RFSA3043TR7 from Qorvo is a monolithic 75 Ω voltage-controlled attenuator (VCA) operating from 5 MHz to 3000 MHz, delivering 30 dB attenuation range, +50 dBm input IP3, +80 dBm input IP2, and <2 mA supply current at 3–5 V. It serves as a high-linearity RF power control element in CATV signal paths with temperature-compensated linear-in-dB control.
For engineers reviewing the RFSA3043TR7 datasheet, pinout, applications, or equivalent options, key selection criteria include broadband 5–3000 MHz operation, 75 Ω impedance match without external components, dual-slope voltage control (MODE-selectable), low distortion (−80 dBc CSO), and QFN-16 3.0 × 3.0 mm packaging for space-constrained cable infrastructure designs.
Technical Context
The RFSA3043TR7 implements a proprietary monolithic analog VCA architecture enabling simultaneous high linearity (+50 dBm IP3), wide dynamic range (30 dB attenuation), and temperature-stable linear-in-dB gain control. Its on-chip DC conditioning circuitry eliminates external bias networks while supporting selectable positive/negative attenuation slope via the MODE pin.
It operates across −40 °C to +105 °C with 10 µs settling time for 1 dB attenuation steps, 1.5–2.0 dB minimum insertion loss, and 15 dB RF port return loss - all specified over full frequency and control voltage (0–5 V) ranges. The device requires no external matching components due to integrated 75 Ω port termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 5 MHz to 3000 MHz - supports full DOCSIS 3.1/4.0 upstream/downstream bands and legacy CATV spectrum. |
| Attenuation Range | 30 dB typical - enables precise RF power leveling across multi-channel cable modem and node amplifier stages. |
| Input IP3 | +50 dBm typical - ensures minimal intermodulation distortion in dense 132-channel 38 dBmV input environments. |
| Supply Current | 2 mA typical - allows integration into low-power-consumption active nodes and embedded amplifiers. |
| Control Voltage Range | 0–5 V with MODE-selectable slope - provides flexible interface to DACs or microcontroller GPIOs without level-shifting. |
| Package | QFN-16, 3.0 × 3.0 × 0.85 mm - surface-mount compatible with automated assembly and thermal pad grounding for stability. |
| Impedance Match | 75 Ω matched RF ports - eliminates need for external matching networks in CATV infrastructure designs. |
Pinout & Package
RFSA3043TR7 is housed in a thermally enhanced 16-pin QFN package (3.0 mm × 3.0 mm × 0.85 mm) with exposed thermal pad. All ground pins (Pins 1, 2, 4–9, 11–13) must be soldered to PCB ground plane for optimal RF performance and thermal dissipation. Pin 14 is VC (control voltage), Pin 15 is VDD (3–5 V supply), and Pin 16 is MODE (logic-level slope select).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4–9, 11–13 | GND | RF and DC ground reference; multiple pins minimize inductance and ensure stable linearity and thermal resistance. |
| 3 | RF IN | 75 Ω RF input port requiring external DC blocking capacitor; primary signal entry point for linearity-critical path. |
| 10 | RF OUT | 75 Ω RF output port requiring external DC blocking capacitor; designed for direct connection to downstream amplifiers or filters. |
| 14 | VC | Analog control voltage input (0–5 V); sets attenuation level with linear-in-dB response and <37 µA input current. |
| 15 | VDD | Positive supply (3–5.5 V); powers internal bias and control circuitry; decoupling required per layout guidelines. |
| 16 | MODE | Digital logic input (0.4 V low / 1 V high); selects attenuation slope polarity - critical for system-level control loop design. |
Key Features
| Feature | Design Value |
|---|---|
| Broadband 5–3000 MHz operation | Covers entire DOCSIS 3.1/4.0 spectrum including upstream (5–204 MHz) and downstream (250–3000 MHz) bands without band switching. |
| Temperature-compensated linear-in-dB control | Maintains ≤1.5 dB peak-to-peak gain variation over −40 °C to +105 °C - eliminates need for calibration in outdoor node deployments. |
| High linearity: +50 dBm IP3, −80 dBc CSO | Enables clean multi-carrier transmission in 132-channel systems at +38 dBmV input - meets SCTE 40 and ITU-T J.113 requirements. |
| Low 2 mA supply current | Reduces thermal load and power supply burden in cascaded amplifier modules and compact active splitters. |
| 75 Ω matched ports, no external components | Eliminates discrete matching networks and associated parasitics - simplifies layout and improves repeatability in high-volume CATV production. |
Applications
| Cable Modem Upstream Path | CATV Node Amplifier |
|---|---|
|
Use Scenario: Precise upstream transmit power control in DOCSIS 3.1/4.0 cable modems under varying channel loading and temperature conditions. IC Role / Device Role / Timing Role: Voltage-controlled RF attenuator placed between upstream driver amplifier and diplexer to maintain constant launch power per channel. Use Value: Maintains compliance with DOCSIS spectral mask and upstream SNR targets using only 2 mA quiescent current and no external matching. |
Use Scenario: Automatic gain control (AGC) in two-way optical node RF amplifiers to compensate for fiber link loss variations and temperature drift. IC Role / Device Role / Timing Role: High-linearity VCA inserted in the RF signal path before the final stage amplifier to dynamically adjust output power. Use Value: Achieves <−80 dBc CSO and +50 dBm IP3 across −40 °C to +105 °C, ensuring consistent CNR and CTB performance in outdoor cabinets. |
| Headend Signal Conditioning | Active Distribution Splitter |
|
Use Scenario: Flat-tilt compensation and level setting of multi-band signals prior to optical transmission in CATV headend facilities. IC Role / Device Role / Timing Role: Programmable attenuator in RF combiner/leveling modules to equalize amplitude across 5–3000 MHz spectrum. Use Value: Delivers 30 dB range with linear-in-dB response and <1.5 dB tempco - replaces mechanical or switched attenuators with higher reliability and speed. |
Use Scenario: Power balancing across output ports of active coaxial splitters used in MDU (multi-dwelling unit) distribution networks. IC Role / Device Role / Timing Role: Per-port VCA enabling independent downstream level adjustment to compensate for cable length differences and connector losses. Use Value: Enables remote software-based level tuning via MODE/VC interface while maintaining 75 Ω match and low distortion across all ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-controlled attenuator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RFSA2623TR7 | 5–2700 MHz range, 25 dB attenuation range, +48 dBm IP3, QFN-16 3×3 mm | Narrower bandwidth and lower IP3; suitable for legacy DOCSIS 3.0 systems but not full DOCSIS 4.0 spectrum. | Choose when cost sensitivity outweighs need for 3000 MHz coverage and highest linearity. |
| ADL5240ACPZ-R7 | 700–2700 MHz, 30 dB range, +42 dBm IP3, 50 Ω impedance, LFCSP-16 | 50 Ω system interface, narrower low-end frequency limit, lower IP3; requires external matching for 75 Ω CATV use. | Prefer for 50 Ω wireless infrastructure; avoid for CATV unless redesigning impedance interface and accepting higher distortion. |
Compared with RFSA2623TR7 and ADL5240ACPZ-R7, the RFSA3043TR7 uniquely combines 5–3000 MHz coverage, 75 Ω native match, +50 dBm IP3, and temperature-stable linear-in-dB control - making it the only drop-in solution for next-generation DOCSIS 4.0 node and modem designs requiring zero external matching and minimal calibration.
Availability
RFSA3043TR7 is available at Aetrix Electronics and suitable for cable modem upstream control, CATV node amplifier AGC, and headend signal conditioning requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free manufacturing.
Supply support for RFSA3043TR7 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
Qorvo is a U.S.-based semiconductor company specializing in RF solutions for infrastructure, mobile, and defense applications, with leadership in high-performance analog RF front-end components.
The RFSA3043TR7 belongs to Qorvo's CATV and broadband infrastructure product line, engineered specifically for high-linearity, temperature-stable RF power control in 75 Ω cable network equipment operating up to 3000 MHz.
FAQ
What is the recommended operating voltage range for RFSA3043TR7?
The RFSA3043TR7 operates from 3 V to 5.5 V DC on the VDD pin (Pin 15). Typical performance is specified at 5 V, but full functionality-including 30 dB attenuation range and +50 dBm IP3-is maintained down to 3 V. Supply current remains at 2 mA typical across this range, enabling compatibility with both 3.3 V and 5 V system rails in CATV hardware designs.
Does RFSA3043TR7 require external matching components for 75 Ω systems?
No, the RFSA3043TR7 is internally matched to 75 Ω at both RF IN (Pin 3) and RF OUT (Pin 10) across its full 5–3000 MHz range. No external baluns, transformers, or discrete matching networks are needed-only DC blocking capacitors are required on both RF ports. This eliminates insertion loss, layout complexity, and tolerance-related performance variation in production.
How does the MODE pin affect RFSA3043TR7 operation?
The MODE pin (Pin 16) selects attenuation slope polarity: logic HIGH (≥1 V) enables positive slope (higher VC = lower attenuation), while logic LOW (≤0.4 V) enables negative slope (higher VC = higher attenuation). This allows seamless integration with existing control architectures-whether using DAC outputs or microcontroller PWM-filtered voltages-without external inversion circuitry.
What is the thermal performance of RFSA3043TR7 in continuous operation?
The RFSA3043TR7 has a junction-to-board thermal resistance of 46 °C/W when mounted per Qorvo's recommended footprint (exposed pad soldered to solid ground plane). At maximum rated RF input power (27 dBm @ +85 °C), junction temperature rise remains within safe limits under standard PCB thermal design, supporting reliable operation in sealed outdoor node enclosures up to +105 °C ambient.
Is RFSA3043TR7 suitable for DOCSIS 4.0 compliant equipment?
Yes, the RFSA3043TR7 supports the full DOCSIS 4.0 frequency range (5–3000 MHz), delivers −80 dBc CSO and −75 dBc CTB at 132-channel +38 dBmV input, and maintains stable 30 dB attenuation range across temperature-meeting SCTE 40, ITU-T J.113, and CableLabs® specifications for next-generation cable infrastructure where RFSA3043TR7 is deployed as a core linearity-critical component.
RFSA3043TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Qorvo
- Package/Case:
- 16-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Attenuation Value:
- 0dB
- Frequency Range:
- 5 MHz ~ 3 GHz
- Power (Watts):
- 500mW
- Impedance:
- 75 Ohms
- Grade:
- -
- Qualification:
- -
RFSA3043TR7 FAQ
1.How can I place an order for RFSA3043TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RFSA3043TR7 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 RFSA3043TR7 reliable?
The price and inventory of RFSA3043TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RFSA3043TR7 is usually 5 days.
3.What payment methods are accepted for RFSA3043TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RFSA3043TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RFSA3043TR7?
RFSA3043TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RFSA3043TR7 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 RFSA3043TR7?
For technical support, including RFSA3043TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RFSA3043TR7 requirements.
6.How does Aetrix verify that RFSA3043TR7 is sourced from the original manufacturer or authorized distributors?
All RFSA3043TR7 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 RFSA3043TR7 meets industry standards.
7.What is the process for return or replacement of RFSA3043TR7?
All RFSA3043TR7 units undergo pre-shipment inspection (PSI). If there is an issue with RFSA3043TR7, 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 RFSA3043TR7 part is unused and in its original packaging.
Return procedure for RFSA3043TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RFSA3043TR7 Tags
-
PAT0510S-C-3DB-T10
Susumu
-
PAT0510S-C-10DB-T10
Susumu
-
PAT0510S-C-2DB-T10
Susumu
-
PAT1220-C-10DB-T5
Susumu
-
PAT1220-C-6DB-T5
Susumu
-
PAT1220-C-0DB-T5
Susumu
-
PAT1220-C-3DB-T5
Susumu
-
PAT1220-C-5DB-T5
Susumu
-
PAT1220-C-8DB-T5
Susumu
-
MAADSS0008TR-3000
MACOM Technology Solutions
-
MAATSS0018TR-3000
MACOM Technology Solutions
-
PE43205B-Z
pSemi
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
