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30–512 MHz Chip Tunable Filter
Frequency-agile RF filtering across three selectable bands with ≥2% relative bandwidth, ≥13 dBc rejection at F0 ±5%, ≥27 dBc at F0 ±10%, 10-bit parallel control and tuning in 5 µs or less.
One compact filter covering VHF through UHF.
The MTT3051X-7-J combines three digitally selectable frequency bands, ≥2% relative bandwidth, ≥13 dBc rejection at F0 ±5% and ≥27 dBc rejection at F0 ±10%, 8-bit in-band tuning and a shielded 17-pin package for integration into frequency-agile radios, receivers and RF test platforms.
Three selectable bands
Band-control inputs select 30–90 MHz, 90–225 MHz or 225–512 MHz operation.
10-bit parallel interface
A0–A7 set the in-band address while A8–A9 select the operating band, with CMOS and TTL-compatible logic levels.
Wide temperature operation
Specified from −40 °C to +85 °C, with storage capability from −55 °C to +105 °C.
Electrical specifications
Values below are reproduced from datasheet revision A-0 and apply over the stated −40 °C to +85 °C specification range.
| Parameter | Symbol | Specification |
|---|---|---|
| Frequency range | F | 30–90 MHz; 90–225 MHz; 225–512 MHz |
| Insertion loss | I.L | ≤ 7 dB |
| −1 dB bandwidth | BW−1 | ≥ 2% × F0 |
| Out-of-band rejection | Sel. | F0 ±5%: ≥ 13 dBc; F0 ±10%: ≥ 27 dBc |
| RF input power | P(−1 dB) | ≤ 35 dBm |
| Tuning time | Tv | ≤ 5 µs |
| VSWR | VSWR | ≤ 1.5 |
| Input / output impedance | Zin / Zout | 50 Ω |
| Supply voltage | Vs | +3.3 V to +12 V |
| Power consumption | P | ≤ 50 mW |
| Center-frequency drift | F0 drift | ≤ 80 ppm/°C |
| Operating temperature | To | −40 °C to +85 °C |
| Storage temperature | Ts | −55 °C to +105 °C |
| Weight | W | ≤ 20 g |
| Dimensions | — | 38.1 × 25.4 × 6 mm (±0.2 mm) |
F0 denotes the selected center frequency. Confirm final test conditions and revision status with MTT before design release.
Band selection and address control
The 10-bit parallel interface uses A0–A7 for in-band tuning and A8–A9 for frequency-band selection.
Address-code definition
10-bit parallel binary code A0–A9, compatible with CMOS and TTL logic levels.
Address calculation
Calculate the in-band address within the selected segment, then round any decimal result to the nearest integer.
- fx
- Desired intra-segment center frequency
- flow
- Lowest frequency in the selected segment
- fhigh
- Highest frequency in the selected segment
- 250
- Number of intra-segment steps stated in the datasheet
Pin assignment and package
Bottom-view pin naming is reproduced from the mechanical drawing. Verify orientation against the controlled drawing before PCB release.
17-pin definition
RF, band selection, tuning control, power and ground connections
Mechanical summary
Nominal data from datasheet revision A-0
Use the controlled mechanical drawing for PCB land-pattern design, pin orientation and manufacturing tolerances.
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Compact 17-pin modules
27-pin modules with higher-power option
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Download Datasheet →MTT3051X-7-J · 30–512 MHz Chip Tunable Filter · Datasheet Revision A-0 · Specifications are subject to confirmation at the time of order.