The RH6331 is digitally tunable filter operating from 30 MHz to 88MHz. Parallel interface is used for tuning. The module can be installed either in receiving or transmitting tract. RH6331 has low insertion losses, high RF power handling, wide operating temperature range and fast tuning speed. The module can work in frequency-hopping spread spectrum mode. |
RH6331
Specification: |
||||
Frequency Coverage | 30 to 88 MHz | ||||
Input/Output Impedance: | 50 Ω | ||||
In-band Input/Output VSWR | 2:1 | ||||
In-band RF Power Handling | 20 Watt (input) | ||||
Out-band RF Power Handling | Up to 50 Watt | ||||
In-band Second Order Intercept Point | +100 dBm (input) | ||||
In-band Third Order Intercept Point | +50 dBm (input) | ||||
Center Frequency Drift: | ±80 PPM/ºC | ||||
Tuning Control | Parallel | ||||
Tuning Speed | 25 µS | ||||
DC Power Consumption (Static) | 5V @ 2A | ||||
Shape Factor (30 dB/ 3 dB) | 7 typical | ||||
Operating TemperatureRange | -40°C to +65°C | ||||
Size: | 102x76x65 mm | ||||
Weight: | 460 g | ||||
RF Connection | SMA |
RH6331 specification
# | Bandwidth (3 dB), % | Insertion Loss, dB | Shape factor (30 dB) | ||
Overall | Low Side | High Side | |||
4 | 3.5/4.5 | 2.9/3.6 | 6.1/6.5 | 6.8/7.2 | 5.1/5.6 |
6 | 5.5/6.5 | 1.4/1.7 | 6.5/6.8 | 7.25/7.65 | 5.35/5.8 |
Note: table values are shown as average/maximum.
Frequency response functions and VSWR functions
Some frequency response functions and VSWR functions are shown below:
f0: 30 MHz; Bandwidth: 5.97%; VSWR: 1.06; OIL: –1.33 dB; OIL–20%: –29.96 dB; OIL+20%: –33.60dB. |
f0: 50.18 MHz; Bandwidth: 5.82%; VSWR: 1.08; OIL: –1.49 dB; OIL–20%: –28.56 dB; OIL+20%: –34.46dB. |
f0: 70.13 MHz; Bandwidth: 5.7%; VSWR: 1.09; OIL: –1.26 dB; OIL–20%: –29.18 dB; OIL+20%: –35.98dB. |
f0: 88 MHz; Bandwidth: 5.76%; VSWR: 1.33; OIL: –1.23 dB; OIL–20%: –30.02 dB; OIL+20%: –36.58dB. |
Note: f0 — tuning frequency;VSWR — VSWR at f0 frequency;OIL — insertion loss at f0;
OIL–20% — insertion loss at 0,8f0;OIL+20% — insertion loss at 1,2f0.
RH6331 performance
The following diagrams show value of Insertion Loss at f0, Insertion Loss at 0.8f0, Insertion Loss at 1.2f0 and VSWR at each tuning frequency.
Insertion Loss at f0 |
VSWR |
Insertion Loss at 1.2f0 |
Insertion Loss at 0.8f0 |
Pinout & Ratings
PIN # | Reference designator | Description | Notes |
1 | A2 | Tune Bit 2 | Active: 5V; Inactive: 0V |
2 | A3 | Tune Bit 3 | Active: 5V; Inactive: 0V |
3 | A4 | Tune Bit 4 | Active: 5V; Inactive: 0V |
4 | A5 | Tune Bit 5 | Active: 5V; Inactive: 0V |
5 | A6 | Tune Bit 6 | Active: 5V; Inactive: 0V |
6 | A7 | Tune Bit 7 | Active: 5V; Inactive: 0V |
7, 9, 11, 12 | GND | Digital/RF Ground | — |
8 | VCC | +5V Power Supply Input | 4.75 to 5.25V @ 800mA |
10 | N/C | No Connect | — |
13 | STB | Strobe | Active: 0V; Inactive: +5V |
14 | A0 | Tune Bit 0 | Active: 5V; Inactive: 0V |
15 | A1 | Tune Bit 1 | Active: 5V; Inactive: 0V |
Parallel interface description
Serial interface consists of 9 signals: A0-A7 (tuning frequency code) and STB (strobe). Tuning frequency code is calculated by X10 conversion into binary code. X10 is calculated by the formula:
f0 — tuning frequency; fl — low frequency of the band; fh — high frequency of the band.If you wish to tune to 62.48 MHz, the tune word is:
Time carts are shown below.
Mechanical Outline
Note:sizes are shown in millimeters.