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NANO-ERF® Series
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The NANO-POLE® Extended Range Series of tunable filters was developed to address applications needing an extremely small surface-mount package with low power consumption.  Wide tuning range is accomplished with careful design to minimize size and power consumption.

  • Specifications
  • Performance
  • Product Numbering Table
  • Interface And Control Notes
  • Mechanical Details
  • Pinout and Ratings
  • Datasheet
Frequency Coverage: 30 MHz to 520 MHz
Input/Output Impedance: 50 Ω
Inband Input/Output VSWR: 1.5: 1 typical, 2.2: 1 max
Insertion Loss: See Table 1 below
Percent Bandwidth: See Table 1 below
Ultimate Attenuation: 50 dB typical
Shape Factor (30 dB/3 dB): 6  ± 0.5 typical, 8 max
Inband RF Power Handling: +6 dBm (input, typical)
Out of Band RF Power Handling: +20 dBm @ +/- 15%
Inband Third Order Intercept Point: +16 dBm (input)
Tuning Control: Serial (SPI)
Tuning Speed: 25 µsec typical, 35 µsec max
DC Power: +3.3 VDC @ 15 mA typical
Operating Temperature Range: -40 to +85°C
Size (in. / mm.) 1.1 x 1.1 x .216 / 28 x 28 x 5.5

Table 1:

Part Number Frequency
Range (MHz)
Typical Selectivity @
fc +/- 15% (dBc)
Typ. 3 dB
BW(%)
Insertion Loss
Typ.  Max.
NN-30-520-6-S06  30-520 20 3.5 5.0 6.5
NN-30-520-10-S06 30-520 15 10.8 3.2 4.5


General Information

The NANO-ERF™ tunable filter requires a +3.3 VCD analog and digital supply.  This supply voltage must be adequately filtered as noise present on this pin will directly influence the RF signal purity.

Digital Interface Information

The digital interface format is SPI serial. All data input pins are data bus capable of 3.3V logic levels.


Figure 1: 30-89 MHz Measured Data

NANOERF-30-89-Performance.png

Figure 1: 89-219 MHz Measured Data

NANOERF-89-219-Performance.png

Figure 1: 220-520 MHz Measured Data

NANOERF-220-520-Performance.png

Series; Frequency (MHz) Bandwidth Package
 NN 30-520 6 S06
 NN 30-520 10 S06

Example 6% Part Number: NN-30-520-6-S06




General Information

The NANO-ERF™ tunable filter requires a +3.3 VCD analog and digital supply.  This supply voltage must be adequately filtered as noise present on this pin will directly influence the RF signal purity.

Digital Interface Information

The digital interface format is SPI serial. All data input pins are data bus capable of 3.3V logic levels.


NANOERF-Package
PIN # FUNCTION DESCRIPTION MAX RATING
1, 3, 5, 6, 10, 18, 19 N/C No Connect1 -
2 SCLK Serial Clock -0.5 to (Vcc + 0.5) V
4 /CS Chip Select -
7 /TUNE READY Tune Ready Output -
8 Vcc +3.3 V Power Supply Input -0.3 to 3.6 V
9 GND Power Supply Ground -
11, 13, 14, 16 GND RF Ground -
12, 15 RF I/O RF Input/Output +6 dBm, +20 dBm2
17 GND Digital Ground -
20 MOSI Master Output, Slave Input -

1Leave floating for unit to function properly

2First number indicates maximum in-band power levels and second number indicates maximum out-of-band RF power levels either in CW or composite average for multi-tones at the RF input only



NANO-ERF Downloadable Datasheet

NANO-ERF 1

1.0 Ordering Information

NANO-ERF 2

Note: Options may be limited to particular frequency bands and/or configurations. Consult Pole/Zero for your application.

Example product number: NN-30-520-10-S06

2.0 Block Diagram

NANO-ERF 3

3.0 Pinout and Functional Information

3.1 Pinout

NANO-ERF 4

3.2 Pin Description 

NANO-ERF 5

4.0 Specifications

4.1 Absolute Maximum Ratings3

Voltages are referenced to GND (ground = 0V). Operating at room temperature (unless otherwise noted).

NANO-ERF 6

4.2 Handling Ratings

NANO-ERF 7

4.3 Recommended Operating Conditions

NANO-ERF 8

4.4 Electrical Characteristics

Voltages are referenced to GND (ground = 0 V. All parameters: TA = +23ºC, VCC = +3.3V, RF Impedance = 50Ω).

NANO-ERF 9

4.5 Typical Characteristics

6% Filter: Captured at +6 dBm, 23ºC (s2p files available upon request).

NANO-ERF 10

Figure 4. 89.52-219 MHz Measured Data

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Figured 5. 220.204-520 MHz Measured Data

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4.6 6% Filter: Temperature Response Summary Data

Figure 6. Selectivity Over Temperature

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Figure 7. Insertion Loss Over Temperature

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Figure 8. Return Loss Over Temperature

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Figure 9. Percent Bandwidth Over Temperature

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4.7 Timing Requirements

4.7.1 SPI Interface Timing

The SPI tune interface is a standard SPI interface with Mode = 0 (CPOL = 0, CPHA = 0). There are always 16 data bits regardless of the band or tune command. Any bits that do not affect the frequency offset of the filter should always be set to 0. The interface receives the data most significant byte and most significant bit first.

NANO-ERF 17

Figure 10. Serial Timing Diagram

Table 3. SPI Timing Characteristics

Vcc = 3.3 V +/-5%, GND = 0 V

NANO-ERF 18

5.0 Functional Description

5.1 Tune Commands

The tune command is a two-byte load tune word. The first byte (MSB) is the band the filter should tune to. The second byte (LSB) is the frequency offset in the chosen band. The tune comman d is formatted the same for both SPI and parallel interface modes.

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6.0 Detailed Description

6.1 Digital Interface

NANO-ERF 21

6.2 Example Tune Commands

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6.3 Additional Interface Detail

NANO-ERF 23

7.0 Tune Time

Tune times include internal processing of the tune command data and the 90% settled RF amplitude response time of the filter. This time excludes the time required to load the tune command into the filter. Low level signal measurements were utilized to show the receive tune time that can be expected. 

In addition, RF power in excess of -10 dBm is considered to be "hot switching" of the filter. The data taken in "Table 9. Typical RF Tune Times" was taken with 0dBm input but this does not imply that tuning operation of the filter with that level can be done reliably. It is recommended that RF is less than -10 dBm during a tune event.

NANO-ERF 24

8.0 Application Information

8.1 Application Circuit

Figure 12. Serial Application Circuit

NANO-ERF 25

9.0 Package Information

9.1 Package Detail

NANO-ERF 26

9.2 Recommended Pad Layout

NANO-ERF 27

10.0 Safety Notes

10.1 Handling Information

NANO-ERF 28

NANO-ERF 29

NANO-ERF 30

11.0 Legal Information

11.1 Disclaimer

Limited warranty an liability - Information in this document is believed to be accurate and reliable. Pole/Zero and its suppliers disclaim all warranties, Whether express or implied, including implied warranties of mechantability, fitness for a particular purpose, and non-infringement. The entire risk arising out of use or performance of this information remains with Licensee. Pole/Zero and its suppliers do not make any representation regarding the results of the use of the information in this document.

To the maximum extent permitted by applicable law, in no event will Pole/Zero or its directors, employees, distributors, licensors, suppliers, agents or resellers or suppliers ("Pole/Zero parties") be liable for any indirect, special, incidental, consequential, or exemplary damages, even if such party has been advised of the possibility thereof. The Pole/Zero parties' entire liability will not exceed the sum of the replacement of defective product or provision of a reasonably similar product, at Pole/Zero's discretion. Some jurisdictions do not allow the exclusion or limitation of incidental, consequential or special damages, so this exclusion and limitation may not be applicable to Licensee. The Pole/Zero Parties will not be liable for any claims or damages arising out of content provided by Licensee.

11.2 Right to Make Changes

Pole/Zero Corporation reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof.

12.0 Learn More

For additional information, please visit /polezero 

13.0 Contact and Support

Pole Zero Corporate Office

5558 Union Centre Drive

West Chester, OH 45069

513-870-9060 (Phone)

513-870-9064 (Fax)

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