Key Specs
Quick summary (refer to the datasheet for complete test conditions, limits and option codes).
| Parameter | Specification |
|---|---|
| Package | 7.0×5.0×1.9 mm |
| Frequency range | 10–52 MHz (standard: 10 / 19.2 / 20 MHz) |
| Temperature stability | ±0.1 ppm (−40~+95 °C) or ±0.2 ppm (−40~+105 °C) |
| Output | Clipped-Sine (0.8 Vp-p) or CMOS |
| Supply voltage | 2.5 V / 3.3 V |
| VCTCXO control voltage | Vc 0.4–2.4 V |
| Pull range (VCTCXO) | ±5 ppm min (typ ±9 ppm) |
| Start-up time | ≤3 ms |
Key Features
- Package size: 7.0 × 5.0 × 1.9 mm
- Frequency range: 10–52 MHz (standard: 10 / 19.2 / 20 MHz)
- Output options: Clipped-Sine (0.8 Vp-p) or CMOS (VOH ≥ 0.8·Vcc, VOL ≤ 0.2·Vcc)
- Frequency stability options: ±0.1 ppm (−40~+95 °C) · ±0.2 ppm (−40~+105 °C)
- Frequency tolerance @25 °C: ±1.5 ppm
- Pull range (VCTCXO): ±5 ppm min (typ ±9 ppm)
- Phase noise (19.2 MHz): −130 dBc/Hz @100 Hz · −148 @1 kHz · −156 @10 kHz
- Start-up time: ≤3 ms
- Control voltage (Vc): 0.4 ~ 2.4 V
- Supply voltage: 2.5 V / 3.3 V
- Current consumption (typ): 5 mA (Clipped-Sine) / 8 mA (CMOS)
Background reading: Crystal-controlled vs MEMS oscillators · XTAL oscillator parameters.
Detailed Specifications
| Item | Value | Notes |
|---|---|---|
| Package | 7.0×5.0×1.9 mm | SMT, Tape & Reel supported |
| Frequency range | 10–52 MHz | Standard: 10 / 19.2 / 20 MHz |
| Stability | ±0.1 ppm / ±0.2 ppm | −40~+95 °C or −40~+105 °C (per option) |
| Output | Clipped-Sine (0.8 Vp-p) / CMOS | Select per interface/EMI/power goals |
| Supply voltage | 2.5 V / 3.3 V | Option dependent |
| Vc (VCTCXO) | 0.4–2.4 V | Support in-system trimming/disciplining |
| Pull range (VCTCXO) | ±5 ppm min (typ ±9 ppm) | Wider ranges may be available on request |
| Phase noise @19.2 MHz | −130 @100 Hz, −148 @1 kHz, −156 @10 kHz | Representative profile; see datasheet |
| Start-up time | ≤3 ms | Oscillation start; settling depends on system conditions |
For engineering context on stability budgets and oscillator selection, see TCXO vs OCXO — How to choose and TCXO/VCTCXO for sync GNSS & Satcom engineering guide.
Why Wide-Temperature Stability Matters
In outdoor and industrial networks, ambient swings (−40~+85 °C) and rapid thermal shocks can push a TCXO off-spec. FVT-7S-WT maintains ±0.1 ppm (−40~+95 °C) or ±0.2 ppm (−40~+105 °C) by combining:
- AT-cut crystal + polynomial temp-compensation: On-board sensor + LUT reduce the crystal’s parabolic drift vs. temperature.
- Aging management: Tight process controls and burn-in lower early-life drift, improving holdover behavior.
- VCTCXO fine trim: ±5 ppm min pull range (typ ±9 ppm) enables in-system calibration or disciplining.
Typical Applications
- Outdoor 5G small cells & radio in harsh climates — see TCXO for outdoor edge timing nodes and Outdoor timing: TCXO vs OCXO
- Microwave backhaul sync and radio PLL references — see TCXO family for outdoor edge timing
- IEEE 1588 PTP boundary/transparent clocks — refresh timing fundamentals
- GNSS-disciplined routers & embedded modules — read TCXO for GNSS Applications and TCXO for sync GNSS & Satcom timing
- Industrial automation / SCADA under wide temperature — see Industrial wireless & GNSS module selection guide
- Sync / communication nodes for GNSS & Satcom — see TCXO/VCTCXO family for communication sync and TCXO family for sync GNSS & Satcom
Model routing: Outdoor wide-temperature → FVT-7S-WT · Low-jitter/PLL reference → FVT-7S-HP · Balanced cost/performance → FVT-7S.
More on choosing a reference: TCXO vs OCXO — How to choose · Selecting timing crystals.
Indicative plot: compensates the AT-cut parabolic drift to remain within ±0.1 ppm over −40~+95 °C.
Typical pull range ±9 ppm around mid-control; min spec ±5 ppm.
Representative PN profile; refer to datasheet for complete offset table.
Selection Decision Tree — FVT-7S vs 7S-WT vs 7S-HP
- Outdoor / −40~+95 °C or +105 °C? → Yes: choose 7S-WT; No: go next.
- PLL/clock needs sub-ps jitter emphasis? → Yes: choose 7S-HP; No: go next.
- Cost-optimized, standard temp (−40~+85 °C)? → choose 7S.
- Still unsure? Compare series below and read TCXO vs OCXO.
Documents & Downloads
Datasheet
Download the official datasheet for option tables, limits, test conditions, reflow profile and handling guidance.
Package / Outline
FAQ
- What stability options does FVT-7S-WT offer?
- ±0.1 ppm over −40~+95 °C or ±0.2 ppm over −40~+105 °C. Choose per your ambient profile and holdover budget.
- Is it suitable for IEEE-1588 PTP boundary/transparent clocks?
- Yes. Its wide-temperature ppm stability and low phase noise help maintain TIE/MTIE in outdoor PTP nodes; pair with GNSS disciplining for best results. See TCXO for GNSS Applications and TCXO for outdoor edge timing nodes.
- How long to reach thermal stability after a −40 °C cold start?
- Oscillation starts within milliseconds; ppm-level settling depends on board thermal mass, airflow and enclosure. Typical designs stabilize quickly as the compensation loop equilibrates.
- What happens after a fast thermal shock (e.g., −20 → +60 °C)?
- The compensation loop brings frequency back into the ±ppm band as the sensor re-equilibrates. Recovery time scales with the shock rate and mechanics.
- Does Vc noise impact frequency in VCTCXO mode?
- Yes. Ripple on Vc can modulate the control element. Use a low-noise DAC/PLL filter and local RC filtering; decouple Vc to ground near the pin.
- What pull-range options are available?
- Standard is ±5 ppm minimum (typ ±9 ppm). Wider ranges may be available on request—contact us with your calibration strategy.
- CMOS vs Clipped-Sine—how do I choose?
- Clipped-Sine minimizes current and is ideal for RF/PLL references; CMOS simplifies digital interfacing. Match to your receiver/load and EMI goals.
- What about aging and long-term drift?
- Process controls and burn-in reduce early-life drift. Long-term aging is application-dependent; for disciplined systems, periodic calibration further improves accuracy.
- Reflow & MSL guidance?
- Reflow compatible to JEDEC J-STD-020; MSL level—see datasheet and your handling flow. Store/handle per J-STD-033 best practices.
- How does 7S-WT compare to 7S and 7S-HP?
- 7S-WT prioritizes wide-temperature ppm stability; 7S targets cost/standard temp; 7S-HP focuses on low-jitter PLL/LO references.
- Do you publish pricing online? How do I get a quotation?
- We do not publish prices online. Send an RFQ with quantity, frequency, output, supply voltage, temperature option and ship-to details, and we will reply with a formal quotation.
- What are typical MOQ, lead time and supply options?
- MOQ and lead time depend on frequency, output, stability option and volume. We support samples, pilot runs and mass production; contact us for the current schedule and availability.
- Can you customize frequency, stability, output or pull range?
- Yes. Custom frequency points, stability bins, output type and pull-range targets can be supported depending on requirements. Share your spec and we will confirm feasibility and deliverables.
- What packaging and documentation are available?
- Tape & Reel packaging is supported for SMT assembly. Datasheet and handling guidance are available; test reports and compliance documents can be provided on request.
Ordering Information
| Code | Option | Notes |
|---|---|---|
| VDD | 2.5 V / 3.3 V | Select supply voltage |
| OUT | CMOS / Clipped-Sine | Choose logic/output type |
| STAB | ±0.1 ppm / ±0.2 ppm | Choose temperature option below |
| TEMP | −40~+95 °C (±0.1 ppm) / −40~+105 °C (±0.2 ppm) | Operating temp per stability |
| FREQ | 10–52 MHz | Standard: 10 / 19.2 / 20 MHz |
Example part number: FVT7S-WT-33-C-01-Y-19.2M (example only; refer to official code rules).
Selection Path / Upgrade Options: FVT-7S (standard temp, balanced cost), FVT-7S-WT (wide temp, harsh outdoor), FVT-7S-HP (low-jitter reference).
See all Timing Devices or browse the TCXO Series.
Compliance & Reliability
- RoHS / REACH compliant; Halogen-free (optional)
- JEDEC J-STD-020 reflow compatible; MSL level: see datasheet
- JEDEC J-STD-002 solderability method (reference)
- 100% outgoing electrical tests; temperature cycling & aging sampling
- Packaging: Tape & Reel (7″/13″), SMT pick-and-place ready
Compare Other TCXO Models
| Model | Size (mm) | Freq. Range | Output | Power | Stability | Applications |
|---|---|---|---|---|---|---|
| FVT-2S | 2.5×2.0 | 10–52 MHz | Clipped-Sine | 1.5 mA | ±2.0 ppm | GPS, Mobile |
| FVT-3S | 3.2×2.5 | 10–52 MHz | Clipped-Sine | 1.5 mA | ±2.0 ppm | IoT, WLAN |
| FVT-5S | 5.0×3.2 | 10–52 MHz | Clipped-Sine / CMOS | 1.5–10 mA | ±2.0 ppm | Telecom, GPS |
| FVT-6S | 2.0×1.6 | 10–52 MHz | Clipped-Sine | 1.5 mA | ±2.0 ppm | Wearables, IoT |
| FVT-7S-WT | 7.0×5.0 | 10–52 MHz | Clipped-Sine / CMOS | 5–8 mA | ±0.1/±0.2 ppm | Outdoor, Industrial Wireless |
* See each product page for final specifications.
FVT-7S Family — Similarities & Differences
Common to all: 7.0×5.0×1.9 mm footprint; CMOS or Clipped-Sine outputs.
| Aspect | FVT-7S | FVT-7S-WT | FVT-7S-HP |
|---|---|---|---|
| Frequency range | 5–52 MHz | 10–52 MHz | 5–52 MHz |
| Standard frequencies | 10 / 12.8 / 13 / 16.8 / 19.2 / 20 / 26 / 30.72 / 38.4 / 40 / 52 MHz | 10 / 19.2 / 20 MHz | 10 / 12.8 / 16.384 / 19.2 / 19.44 / 20 / 25 / 26 MHz |
| Frequency stability over temperature | ±2.0 ppm (−30~+75 °C), ±2.5 ppm (−40~+85 °C) | ±0.1 ppm (−40~+95 °C), ±0.2 ppm (−40~+105 °C) | ±0.28 ppm (−40~+85 °C) · up to −40~+105 °C (±2.0 ppm) |
| Frequency tolerance @25 °C | ±2.0 ppm | ±1.5 ppm | ±2.0 ppm |
| Phase noise @19.2 MHz | −148 dBc/Hz @10 kHz | −130 @100 Hz, −148 @1 kHz, −156 @10 kHz | −130 @100 Hz, −145 @1 kHz, −154 @10 kHz |
| Supply current (typ) | 3.5 mA (CS) / 6 mA (CMOS) | 5 mA (CS) / 8 mA (CMOS) | 5 mA (CS) / 8 mA (CMOS) |
| Operating temperature | −40~+85 °C | −40~+95 / +105 °C (per stability) | −40~+85 °C (±0.28 ppm) · up to −40~+105 °C (±2.0 ppm) |
| Use cases | Base station, backhaul, radio | Outdoor / harsh environments; industrial wireless | Low-jitter PLL/LO refs; precision telecom/test |
| Product page | FVT-7S | FVT-7S-WT | FVT-7S-HP |
Numbers shown are typical/common values. For full options and test conditions, refer to each product’s datasheet.