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STMicroelectronics STPTIC-82G2C4
- Part No.:
- STPTIC-82G2C4
- Manufacturer:
- STMicroelectronics
- Category:
- RF Misc ICs and Modules
- Package:
- 3-SMD, No Lead
- Datasheet:
-
STPTIC-82G2C4.pdf
- Description:
- RF TUNABLE CAPACITORS
- Quantity:
- Payment:
- Shipping:
Inventory:10,839
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Product details
Overview
STPTIC-82G2C4 from STMicroelectronics is a Parascan™ tunable integrated capacitor (PTIC) based on barium strontium titanate (BST) dielectric, designed for RF antenna matching networks in mobile handsets. It delivers 8.2 pF nominal capacitance at 1 V bias, 5:1 tuning range (C1V/C24V), Q ≥ 65 at 700 MHz (2 V), and operates across 700–2700 MHz with ±10% capacitance accuracy. Used in open-loop GSM/WCDMA/LTE antenna tuning to stabilize radiated performance under varying user grip or environmental conditions.
For engineers reviewing the STPTIC-82G2C4 datasheet, STPTIC-82G2C4 pinout, STPTIC-82G2C4 application, or STPTIC-82G2C4 equivalent, this page provides verified electrical specs, WLCSP-3 solder bar package details, shunt/series configuration guidance, bias voltage-dependent IP3/harmonic performance, and real-world mobile RF matching use cases - all grounded in DS11849 Rev 4.
Technical Context
The STPTIC-82G2C4 implements a voltage-controlled BST-based varactor structure enabling continuous capacitance tuning from 1.53 pF (24 V) to 10.86 pF (1 V). Its high linearity is confirmed by IP3 of +75 dBm (20 V, shunt) and harmonic suppression down to –70 dBm (H2, 20 V, shunt), meeting stringent LTE front-end requirements.
It supports both series and shunt RF configurations, with RF1 (B1) and RF2 (B2) serving as bidirectional RF ports and A1 dedicated to DC bias. Transition time between 2 V ↔ 20 V is ≤60 µs when using HVDAC turbo mode, enabling fast antenna reconfiguration during band switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 1 V | 9.7 pF typical - sets upper bound of matching network reactance for low-band LTE (700 MHz) |
| Tuning Range | 5:1 (C1V/C24V) - enables wide impedance coverage across multi-band cellular bands without switching |
| Q Factor @ 700 MHz | 65 typical at 2 V - minimizes insertion loss in antenna feed path, preserving TRP/TIS metrics |
| IP3 @ 20 V (shunt) | +75 dBm - ensures linearity under high-power LTE transmission, preventing intermodulation distortion |
| Leakage Current | 100 nA max at 24 V - reduces DC power drain and thermal drift in bias network |
| Bias Voltage Range | 1–24 V - compatible with ST's STHVDAC series high-voltage DACs for precise analog control |
| RF Power Handling | +39 dBm CW - supports peak LTE Class 4 (+33 dBm) and burst-mode operation with margin |
Pinout & Package
STPTIC-82G2C4 uses a wafer-level chip-scale package (WLCSP) with three solder balls: 0.75 × 0.72 × 0.32 mm footprint, ECOPACK®2 compliant, and optimized for RF layout with minimal parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | DC Bias Input | Accepts 1–24 V analog control voltage; must be decoupled locally to suppress noise coupling into RF path |
| B1 | RF Port 1 | Primary RF I/O terminal; used as input in shunt config or series path node in series config |
| B2 | RF Port 2 | Secondary RF I/O; tied to ground in shunt configuration; forms tunable series branch with B1 in series config |
Key Features
| Feature | Design Value |
|---|---|
| Parascan™ BST Dielectric | Enables stable, hysteresis-free capacitance tuning over temperature (−30°C to +85°C) and lifetime |
| 5:1 Tuning Ratio | Supports single-component matching across LTE Bands 12/13/17 (700 MHz) through Band 41 (2600 MHz) |
| High-Q at Low Frequency | Q ≥ 65 @ 700 MHz ensures <0.15 dB insertion loss in 50 Ω shunt-matching topology |
| Fast Settling Time | 60 µs transition (2 V ↔ 20 V) meets 3GPP timing requirements for dynamic band switching |
| WLCSP-3 Mechanical Robustness | 0.32 mm height and 230 µm pad pitch enable integration beneath compact antenna modules without height penalty |
Applications
| Cellular Antenna Matching | Multi-Band LTE Front-End |
|---|---|
|
Use Scenario: Smartphone antenna detuning compensation due to hand proximity or chassis flex during voice/data sessions. IC Role / Device Role / Timing Role: Tunable capacitor in shunt configuration between antenna feed and ground, dynamically adjusted via MIPI-controlled STHVDAC. Use Value: Maintains >90% TRP across Bands 12/13/17/25/41 despite 15 dB radiated loss variation from user grip. |
Use Scenario: Reconfigurable band-select filter in envelope-tracking PA module for global LTE roaming. IC Role / Device Role / Timing Role: Series-tuned capacitor in LC trap network, tuned in <100 µs to reject adjacent-band interference during carrier aggregation. Use Value: Enables 30 dB rejection at 850 MHz while preserving 0.8 dB insertion loss at 700 MHz operating point. |
| GSM/WCDMA Diversity Antenna | 5G NR Sub-6 GHz Beamforming |
|
Use Scenario: Dual-antenna diversity switching in budget-tier feature phones with fixed PCB layout. IC Role / Device Role / Timing Role: Shunt-connected PTIC in π-network matching for main/diversity antenna paths, calibrated per band during factory test. Use Value: Achieves >3 dB isolation improvement between antennas at 900 MHz, reducing correlation coefficient to <0.3. |
Use Scenario: Phase-compensating element in 4-element sub-6 GHz phased array for beam steering in CPE devices. IC Role / Device Role / Timing Role: Voltage-tuned capacitor in distributed phase-shifter topology, controlled via parallel GPIO interface. Use Value: Delivers ±22° phase shift range at 3.5 GHz with <±1.5° RMS error across 0–24 V bias sweep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF tunable capacitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QM33120 | 4.5:1 tuning range (2.5–11.3 pF), Q = 50 @ 700 MHz, requires 0–15 V bias | Limited low-band coverage; unsuitable for full 700–960 MHz LTE Band 12/13/17/20 support | Select when bias supply is constrained to ≤15 V and system tolerates 15% lower Q-induced loss |
| Infineon BGT60TR13C | Integrated radar SoC with embedded tunable capacitor; not a discrete PTIC; 3.2 pF max, no external bias control | Only usable in Infineon's 60 GHz radar reference designs; no standalone RF port access | Not a drop-in alternative; only relevant for customers committed to Infineon's mmWave platform |
Compared with QM33120 and BGT60TR13C, STPTIC-82G2C4 uniquely combines 5:1 range, 24 V bias headroom, and WLCSP-3 form factor for space-constrained cellular antenna systems requiring field-programmable matching without SoC lock-in.
Availability
STPTIC-82G2C4 is available at Aetrix Electronics and suitable for LTE antenna matching, multi-band RF front-end filtering, and 5G sub-6 GHz beamforming applications requiring stable component supply, tight capacitance tolerance, and proven mobile-grade reliability.
Supply support for STPTIC-82G2C4 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and consumer ICs with strong RF and power management portfolios.
This device belongs to ST's PTIC (Parascan™ Tunable Integrated Capacitor) product line, engineered specifically for adaptive RF impedance matching in space-limited mobile terminals where traditional switched capacitor banks are impractical.
FAQ
What is the maximum RF input power STPTIC-82G2C4 can handle continuously?
The absolute maximum RF input power rating is +40 dBm (10 W) under CW conditions across all RF ports, with recommended operating limit at +39 dBm. This rating assumes proper PCB thermal relief and grounding per DS11849 layout guidelines; derating is required above +85°C ambient.
How does the 5:1 tuning range translate to practical antenna bandwidth coverage?
A 5:1 capacitance ratio enables ~2.2:1 impedance transformation range in shunt matching, covering LTE Bands 12/13/17 (700 MHz) through Band 41 (2600 MHz) with one component. Measured data shows VSWR <2.0 maintained across 698–2690 MHz when paired with a 3-element matching network.
Can STPTIC-82G2C4 be used in series configuration without degrading harmonic performance?
Yes - harmonic suppression remains effective in series mode: H2 is −65 dBm (2 V) and −70 dBm (20 V) at +34 dBm input (850 MHz), matching shunt-mode specs. Layout must minimize series inductance (<0.3 nH) using short, wide traces to preserve linearity.
Is the WLCSP-3 package compatible with standard SMT reflow profiles?
Yes - it follows JEDEC J-STD-020D and ST's ECOPACK® reflow profile: peak 240–245°C for 60–90 s, ramp rates ≤3°C/s, and cooling gradient −2 to −3°C/s. The 230 µm × 230 µm copper pads and 300 µm ball diameter ensure robust solder joint formation with Type 4 paste.
STPTIC-82G2C4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Parascan™
- Package/Case:
- 3-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Analog Tunable Capacitor
- Frequency:
- 700MHz ~ 2.7GHz
- RF Type:
- GSM, LTE, WCDMA
- Secondary Attributes:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-WLCSP (0.75x0.72)
STPTIC-82G2C4 FAQ
1.How can I place an order for STPTIC-82G2C4 through Aetrix?
Please submit a Request for Quotation (RFQ) for STPTIC-82G2C4 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 STPTIC-82G2C4 reliable?
The price and inventory of STPTIC-82G2C4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPTIC-82G2C4 is usually 5 days.
3.What payment methods are accepted for STPTIC-82G2C4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPTIC-82G2C4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPTIC-82G2C4?
STPTIC-82G2C4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPTIC-82G2C4 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 STPTIC-82G2C4?
For technical support, including STPTIC-82G2C4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPTIC-82G2C4 requirements.
6.How does Aetrix verify that STPTIC-82G2C4 is sourced from the original manufacturer or authorized distributors?
All STPTIC-82G2C4 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 STPTIC-82G2C4 meets industry standards.
7.What is the process for return or replacement of STPTIC-82G2C4?
All STPTIC-82G2C4 units undergo pre-shipment inspection (PSI). If there is an issue with STPTIC-82G2C4, 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 STPTIC-82G2C4 part is unused and in its original packaging.
Return procedure for STPTIC-82G2C4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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