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Qorvo QPC1008SR
- Part No.:
- QPC1008SR
- Manufacturer:
- Qorvo
- Category:
- Attenuators
- Package:
- -
- Datasheet:
-
QPC1008SR.pdf
- Description:
- DC-20GHZ 5-BIT DIGITAL ATTENUATO
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
QPC1008SR from Qorvo is a GaAs MMIC 5-bit digital step attenuator with integrated 1 dB voltage-variable attenuator (VVA), operating from DC to 20 GHz in a 3.9 × 3.9 mm leadless surface-mount package. It delivers 32 dB total attenuation (31 dB digital + 1 dB analog), 5.5 dB typical insertion loss at 10 GHz, and 50 Ω RF port matching - enabling direct integration into high-frequency test instrumentation and phased-array front-ends.
For engineers reviewing the QPC1008SR datasheet, pinout, applications, or equivalent options, key selection criteria include its -5 V digital/analog control interface, 24 ns rise time, ±0.3 dB digital accuracy (1–8 dB states), 12 dB input/output return loss, and MSL Level 1 handling compliance.
Technical Context
The QPC1008SR implements a negative-voltage-controlled architecture: five digital bits (P1–P5) accept 0 V / -5 V logic for 1–16 dB steps, while P0 accepts 0 to -5 V for fine 1 dB analog adjustment. Bias is supplied via Vee (-5 V), and all RF ports are DC-coupled and internally matched to 50 Ω.
It operates across -40 °C to +85 °C with absolute maximum ratings including -8 V control voltage tolerance, +27 dBm CW RF input power, and 131.3 °C/W thermal resistance (θJC). Switching speed is characterized as 24 ns rise / 6 ns fall, with tOn/tOff of 33/21 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC – 20 GHz: supports broadband RF signal conditioning from baseband through K-band. |
| Total Attenuation Range | 32 dB (31 dB digital + 1 dB analog): enables precise gain control in dynamic range management systems. |
| Insertion Loss (Ref. State) | 5.5 dB at 10 GHz: low baseline loss preserves system noise figure and signal integrity. |
| Digital Control Voltage | -5 V / 0 V logic: compatible with standard negative-voltage RF control interfaces. |
| Analog Control Voltage | 0 to -5 V on P0: provides continuous 1 dB fine-tuning without digital switching artifacts. |
| Input/Output Return Loss | ≥12 dB across band: eliminates need for external impedance matching networks. |
| Switching Speed (tRise/tFall) | 24 ns / 6 ns: supports fast AGC and beam-steering timing in radar and EW systems. |
Pinout & Package
QPC1008SR is housed in a 3.9 × 3.9 × 0.9 mm leadless surface-mount package with exposed backside ground. Pin layout follows a 24-pin configuration with dedicated RF I/O, bias, digital control, and analog control terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF In / RF Out (Pins 3, 16) | DC-coupled 50 Ω RF ports | Enable bidirectional signal flow with no external DC blocking or matching required. |
| Vee (Pin 18) | Negative bias supply | Provides -5 V reference for all control circuitry; must be stable and low-noise. |
| P1–P5 (Pins 19–23) | Digital control inputs | Each controls 1/2/4/8/16 dB bit; logic high = -5 V, logic low = 0 V. |
| P0 (Pin 24) | Analog control input | 0 to -5 V sweep yields continuous 1 dB attenuation variation. |
| GND (Pins 2, 4, 15, 17, Backside) | RF/DC ground reference | Multiple ground connections minimize inductance and thermal resistance. |
| N/C (Pins 1, 5–14) | No internal connection | May be tied to ground for mechanical stability or EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| 5-bit + 1 dB VVA architecture | Enables 32 discrete attenuation states with sub-dB resolution for precision RF leveling. |
| DC–20 GHz bandwidth | Supports wideband applications including Ka-band radar and multi-octave test equipment. |
| 50 Ω matched RF ports | Eliminates external matching components, reducing PCB area and insertion loss uncertainty. |
| ±0.3 dB digital accuracy (1–8 dB) | Ensures repeatable gain control in closed-loop automatic test systems. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking or special handling. |
Applications
| Radar Front-Ends | Electronic Warfare (EW) Jammers |
|---|---|
|
Use Scenario: Dynamic RF power control in T/R modules of active electronically scanned arrays (AESA). IC Role / Device Role / Timing Role: Digitally programmable attenuator for transmit gain calibration and receive AGC. Use Value: 32 dB range and 24 ns switching enable rapid beam nulling and adaptive interference suppression. |
Use Scenario: Wideband amplitude modulation in channelized jammer exciters. IC Role / Device Role / Timing Role: High-speed RF attenuation element in frequency-agile threat simulation systems. Use Value: DC–20 GHz coverage and 12 dB return loss ensure flat response across multiple threat bands without retuning. |
| Automated Test Equipment (ATE) | Phased Array Calibration Systems |
|
Use Scenario: Signal level conditioning in vector network analyzer (VNA) receiver paths and stimulus sources. IC Role / Device Role / Timing Role: Precision step attenuator for reference path leveling and dynamic range extension. Use Value: ±0.3 dB digital accuracy and 5.5 dB insertion loss maintain measurement traceability and SNR. |
Use Scenario: Per-element gain trimming during factory calibration of antenna array modules. IC Role / Device Role / Timing Role: Programmable RF trim component for compensating manufacturing tolerances in MMIC-based arrays. Use Value: 1 dB analog fine-tuning (P0) allows sub-step correction without requiring additional DACs or external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband digital attenuator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC624LP4E (Analog Devices) | 4-bit, 0–15 dB range; 0/+5 V CMOS control; 0.5–8 GHz bandwidth. | Limited to sub-8 GHz; lacks analog fine-tuning and DC coupling. | Select when cost-sensitive, lower-frequency, or positive-voltage control is required. |
| PE43711 (Pasternack / pSemi) | 7-bit, 0–31.75 dB; SPI interface; 9 kHz–8 GHz; requires external VDD and level-shifting. | Lower frequency ceiling and serial interface increase latency and board complexity. | Choose for SPI-configurable systems needing higher resolution below 8 GHz. |
Compared with HMC624LP4E and PE43711, the QPC1008SR offers unique DC–20 GHz operation, integrated 1 dB VVA for analog trimming, and native -5 V control compatibility - making it optimal for Ka-band radar, EW, and broadband ATE where wideband linearity and fine-grained attenuation are critical.
Availability
QPC1008SR is available at Aetrix Electronics and suitable for radar front-ends, electronic warfare jammers, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for QPC1008SR 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 RF semiconductor company specializing in high-performance RF solutions for defense, infrastructure, and mobile applications.
The QPC1008SR belongs to Qorvo's high-frequency GaAs MMIC attenuator product line, engineered for wideband electronic warfare, radar, and test instrumentation where precision, speed, and broadband performance are essential.
FAQ
What is the control voltage polarity requirement for QPC1008SR?
The QPC1008SR requires negative-voltage control: digital bits (P1–P5) operate at 0 V (low) or -5 V (high), while the analog control input (P0) sweeps from 0 V to -5 V. Vee bias must be -5 V. Positive-voltage control signals are incompatible and may damage the device.
Does QPC1008SR require external impedance matching networks?
No. The QPC1008SR features internally matched 50 Ω RF input and output ports across DC–20 GHz, eliminating the need for external matching components. This simplifies layout, reduces insertion loss uncertainty, and improves repeatability in high-frequency designs.
What is the maximum RF input power rating for QPC1008SR?
The QPC1008SR has an absolute maximum CW RF input power rating of +27 dBm at 25 °C. Its P0.1dB compression point is typically +22 dBm at 10 GHz, ensuring linear operation under most high-dynamic-range test and radar conditions.
How does the analog control (P0) interact with the digital attenuation states in QPC1008SR?
The P0 analog control adds up to 1 dB of continuous attenuation on top of any selected digital state (e.g., 16 dB digital + 0.7 dB analog = 16.7 dB total). It does not replace digital bits but provides fine-grained adjustment within each 1 dB step, enabling sub-dB resolution without switching transients.
Is QPC1008SR compatible with lead-free reflow processes?
Yes. The QPC1008SR is qualified for lead-free soldering with a peak reflow temperature of 260 °C and uses ENEPIG contact plating. It is rated MSL Level 1 per JEDEC J-STD-020, permitting unlimited floor life and standard SMT assembly without pre-baking.
QPC1008SR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Qorvo
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Attenuation Value:
- -
- Frequency Range:
- -
- Power (Watts):
- -
- Impedance:
- -
- Grade:
- -
- Qualification:
- -
QPC1008SR FAQ
1.How can I place an order for QPC1008SR through Aetrix?
Please submit a Request for Quotation (RFQ) for QPC1008SR 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 QPC1008SR reliable?
The price and inventory of QPC1008SR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QPC1008SR is usually 5 days.
3.What payment methods are accepted for QPC1008SR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QPC1008SR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QPC1008SR?
QPC1008SR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QPC1008SR 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 QPC1008SR?
For technical support, including QPC1008SR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QPC1008SR requirements.
6.How does Aetrix verify that QPC1008SR is sourced from the original manufacturer or authorized distributors?
All QPC1008SR 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 QPC1008SR meets industry standards.
7.What is the process for return or replacement of QPC1008SR?
All QPC1008SR units undergo pre-shipment inspection (PSI). If there is an issue with QPC1008SR, 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 QPC1008SR part is unused and in its original packaging.
Return procedure for QPC1008SR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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