Q&A - Recent Threads

Issue about ADRF6780-EVALZ control through ACE

Matt1012 — Tue, 23 Jun 2026 02:11:43 GMT

Hl,

I have bought a ADRF 6780-EVALZ board, There's ADRF 6780-EVALZ 042654 revB. printed on the PCBA,

1)　However, when I try to control ADRF6780-EVALZ control through ACE, there's only ADRF 6780-EVALZ 042654 revA I　can choose, [ACE 1.30.3369.1491)

so there is message which shows state=unavailable. (ACE)

2) When I try to install ADRF6780EvaluationBoardUSEDriver, cannot finish [ it stops at 15%]

Please advise, thanks.

Matt

Noise at LO Frequency Range in ADRV9008-1

mukunthan — Thu, 11 Jun 2026 05:38:45 GMT

Hi danmois

1. During testing with an LO of 175 MHz and an RF input power of approximately -20 dBm, I observed several spurious tones in the FFT. Would an external preselector/bandpass filter help reduce these spurs, or are there recommended ADRV9008-1 configuration, calibration, clocking, or software settings to mitigate them?,

How to debug?

2.I am using the ADRV9008-1 with a 200 MHz RX bandwidth. The datasheet specifies a tunable LO range of 75 MHz to 6 GHz.

If I set the LO to 75 MHz, can signals below 75 MHz (e.g., 10 MHz, 20 MHz, or 30 MHz) still be received and downconverted, since they fall within the receiver bandwidth around the LO? Or does the 75 MHz lower limit prevent reception of RF signals below 75 MHz?

Below attached image testcase configuration:

LO : 175MHz

Bandwidth : 200MHz

Applied frequency : 75 MHz

Thank you.

Import EVAL-ADF7242-PMDZ.brd to Altium

JennyCao — Wed, 11 Mar 2026 10:34:30 GMT

Dear support,

I’m trying to import your "EVAL-ADF7242-PMDZ Layout.brd" file into Altium Designer. I think it is Allegro Design Files. I have an unlicensed Cadence\OrCADX_24.1 installed in my computer, The Altium gave me the following error:

Unable to convert Allegro binary EVAL-ADF7242-PMDZ Layout.brd to intermediate ASCII format.

BRD file version:[Allegro V16.X]

Allegro version:[Allegro V24.1}

Make sure the Path variable includes the location for extracta.exe

Can you help me so that I can import it to Altium?

Thanks!

Jenny

ADF7021 Daughter board ADF7021DBZ5

RoggerOA — Tue, 03 Feb 2026 21:03:06 GMT

Hi,

I have this daughter board (ADF7021DBZ5) which i will stream to 144 MHz, then my question is, which components I need on this board to transmit at the desired frequency?, Since this board does not come with the necessary components to transmit.

In the application note AN-859 there are a components of the band 140-150 MHz, but on page 10 is the use of an XTAL of 11.0592 MHZ and ADF7021DBZ5 board comes already connected to 19.680 MHz XTAL.

So my question is: which components they need connect on this card to transmit a 144 MHz to 19,680 MHz XTAL?

The ADF7023 the AES encryption and decryption functions configuration Issue

paul.wu — Tue, 03 Feb 2026 21:02:39 GMT

First of all, my experiment is described as follows:

with single-chip SPI and GPIO, MOSI, MISO, SCLK, CSN, and IRQ_GP3 pick heel ADF7023 connection.

firmware running on a single-chip-based "http://www.analog.com/static/imported-files/eval_boards/ADF7023_DeviceDrivers.zip" an official example, single-chip can read "Status Word" may interpret the IRQ and state of the ADF7023.

c to the Advance Encryption Standard (AES) - By Kalim Khan (RFG Cork), pdf description file, "rom_ram_7023_2_2_RS_AES.dat module two files, to proceed with the implementation and testing of the AES encryption and decryption functions.

Then, my question are as follows:

1 implementation of AES encryption and decryption procedures to before CMD_CONFIG_DEV issued or after it?

2 file "patch RAM" is the ADF7023 information manual "program RAM"? If so, wishing loading of modules required to fill in the address is not 0x1000 (binary 1000000000000)? If so, you need to command value 0x1E with 0x1000 together?

Following documentation the 0x18 command value to populate the packet RAM ", and with the information booklet on the memory map section to control, not the encryption and decryption of payload only up to 70 bytes? Or is it every time you encrypt or decrypt the payload is only 16 bytes?

4 after the command wait 10 milliseconds, is a fixed period? Or a single chip to determine the "Status Word" the "FW_STATE" field is "Busy"? Or there will be a different approach?

Implementation of AES encryption and decryption procedures will with official sample configuration set conflict? I need to follow to modify PACKET_LENGTH_MAX, TX_BASE_ADR, or RX_BASE_ADR register it? If yes, the value of the register how to modify it?

If you need only use the AES ECB mode, you can not fill value to the initialization vector block? Or special value must be filled?

7. Perform AES encryption and decryption process, can normally send and receive packets?

8 to perform AES encryption process can simultaneously AES decryption ?

ADF7242 Max. Input power.

paul.wu — Tue, 03 Feb 2026 21:02:33 GMT

I want to use ADF7242 for long range communication. Could you tell me how many max input power for ADF7242 , if I will add LNA in RF front end ? Thank you.

How can I get the ADRadioNet for ADF7023?

cklooi3 — Tue, 03 Feb 2026 21:02:31 GMT

Is the protocol developed by ADI available for ADF7023?

How can I download it?

ADF7023 is IEEE 802.15.4g compliant?

GM7 — Tue, 03 Feb 2026 21:02:26 GMT

I'm wondering if ADF7023 is effectively 4g compliant.

Looking to the packet format reported in the datasheet, it seems different from the packet format

specified in the 4g standard ( i.e. PHR in 4g is 2 bytes, Payload is up 2047 bytes)

This is also reftected in the Evaluation Software of the Eval-ADF7023DBxZ.

Thanks for feedbacks

adf7021-N

vardhan0806 — Tue, 03 Feb 2026 21:02:21 GMT

what exactly are the output pins mix_i and mix_q and fil i and fil q for?

image rejection how do i know the signal i'm getting is lower one or higher one with respect to reference signal

ADF7242 and frequency hopping in GFSK/FSK mode

Joffrey — Tue, 03 Feb 2026 21:02:15 GMT

Hello,

I am looking at using the ADF7242 for a proprietary Frequency Hopping radio link.

I would like to determine the blanking interval, i.e. how long it will take to hop between frequencies.

Referring to the datasheet, Section "Receiver Calibration in GFSK/FSK Mode" on page 60, the Frequency Synthesizer will need 18us+ 52us + 80us to start-up and calibrate the Frequency Synthesizer .

However, Figure 94 also shows an Offset Correction Loop (OCL) static and dynamic calibration.

The total calibration time is then 664us.

A blanking interval of 664us is too slow for any resonably Fast Frequency Hopping Spread (FHSS) scheme.

1) Is OCL calibration required before using a new frequency?

2) Is there any way of reducing calibration time (i.e. by using stored calibrated data)?

3) Please confirm what the lowest achievable blanking period time can be.

Any guidance would be welcomed.

Many thanks,

Joffrey

Problem with AGC on ADF7021-N

dvar — Tue, 03 Feb 2026 21:02:14 GMT

Hello,

I am facing a strange issue with AGC on the ADF7021-N chip.

I am using an external oscillator at 14,7456 MHz, listening to a transmitter sending analog audio at 324,0875 MHz and my register settings looks like this:

reg0: 0x095f8c80

reg1: 0x037ad021

reg2: 0x009610a2

reg3: 0x3e4c0493

reg4: 0x80a73694

reg5: 0x000024f5

reg6: 0x0a07ebb6

reg9: 0x000231e9

reg10: 0x0896355a

reg14: 0x0000001e

reg15: 0x0000000f

I observe the following:

If I program the chip after turning the transmitter on, audio is fine and I can read an RSSI value from register 7 that makes sense.
If I program the chip and THEN turn the transmitter on, audio quality is really bad and the RSSI value is low even though the filter gain and LNA Gain are set at maximum (2 and 2).
When I have proper audio quality and degrade the signal such that AGC sets the Filter and LNA Gain to maximum, then it doesn't reduce the gain again when I restore a good signal quality, and the RSSI value read back is still extremely low.
When I end up in situation 2. or 3., reprogramming the chip (All the above mentioned registers, in the way it is advised to in the datasheet), good audio quality is restored and RSSI reading makes sense again.

So, my question is simple: what can be the reason for that? I haven't found any article describing any similar problem in this forum so I guess there's nothing wrong with the chip in the first place.

Thanks for your help!

Best regards,

Damien.

adf7021-N

vardhan0806 — Tue, 03 Feb 2026 21:02:11 GMT

is there a buffer inside a adf7021-N for sending data it received from transmitter to a micro controller if then what is its size

adf7021-N

vardhan0806 — Tue, 03 Feb 2026 21:02:05 GMT

hi everyone;

my name is harsha ;i wanted to program adf7021-N eval board with msp430F5438A experimental board . the interface part is the problem the header jacks are not identical so can anyone suggest me how to connect them reliable what the way and what kind of connectors do i need and carry on .i'm attaching msp430 experimental board datasheet

hoping reply soon

adf7021-N

vardhan0806 — Tue, 03 Feb 2026 21:01:45 GMT

which is the best protocol to interface adf7021-N with a microcontroller and why

Software drivers for ADF7023-J

Sandplum — Tue, 03 Feb 2026 21:01:40 GMT

I have a design using the ADF7023-J xceiver and was trying to pull in software to initialize & configure it with my Atmel micro. I downloaded the adf7023.c and adf7023.h files which appear to have the required functions but they reference include.h which I couldn't find and so I'm getting compile errors. Where can I find that file and are there any others that I need to pull in as well? I'm using the packet mode (SPI).

ADF7012 RF output impedance

hhjjj — Tue, 03 Feb 2026 21:01:32 GMT

Dear,

Can anyone kindly provide us RF output impedance of ADF7012 around 145MHz?

We'd really appreciate if anyone has data on this as we're not equipped with load-pull measurements.

Thank you in advance!

hojun

ADF7021 vs ADF7021-N register differences

ak1000 — Tue, 03 Feb 2026 21:01:14 GMT

Hello,

Beyond the Register 1 changes required based on the output frequency, are there any other register differences between the ADF7021 and ADF7021-N? I am trying to use the same register settings to support both the ADF7021 and ADF7021-N parts. Is there an application note highlighting any differences. I saw two differences between the datasheets (Register 3 and Register 14), but these look like clerical errors in the ADF7021 datasheet.

Thanks,

Ali

ADF7021-N,RSSI level always 0.Where is my error?

Diegotrex — Tue, 03 Feb 2026 21:01:11 GMT

Hi to everybody in this forum,

thanks in advance just for reading this

My firmware is not able to read RSSI level on ADF7021-N mounted on a specific board

The board itself can be connected to the Eval board,and in this case RSSI can be read,

It is pretty correct,i.e -60dBm RSSI vs -59 dBm on a very good spectrum analyzer.

So i can guess that my hardware works fine.

If i control the ADF7021 by means of a uC i can succesfully set the Tx frequency,i have correct readback of VDD,Product Id(0x2111),external ADC IN but RSSI remains 0x500..

To have something different i have to let ADC disabled in register 8:I this case i have RSSI=0x52F ,changing signal level has not effect.

I use the EVB as a Tx,generating a modulated signal,say 100MHz at2,4Kbps 1010 GFSK.

The Rx is my bord,

i set at 170Mhz Rx mode(synth dividers calculated 100KHz lower,169.90 Mhz), MUXOUT set to digital lock,i wait for it going high(in Tx it works)

then i perform the readback in the following steps

1)ADC Enable setting bit 8 of register 8 (0x108)

2)Setting value to write in Readback setup register :Readback for ADC out and ADC converting RSSI,Readback enabled

3)I write the above value(0x147) in Register 7 ,Readback Setup Register

4)I set register 0 to have RSSI_Ready signalled on MUX_OUT ,

5)I wait until RSS_ Ready is high,but it it looks always high,..why?

6)I perform the Readback in 18 clock cycles

7)I turn off ADC

Thanks again for your attention

Diego

Can the ADF7023 demodulate GSM

PDA01 — Tue, 03 Feb 2026 21:01:10 GMT

As the ADF7023 have a baud rate of 300 kbs, can it demodulate a GSM burst ? As i can see, it can be configurated with very flexible preambule and sync

Hi, I have a question about adf7023 connecting

mankyu — Tue, 03 Feb 2026 21:01:07 GMT

Hi, I'm mankyu and using adf7023, but i'm really new with this product.

I'm doing many kinds of tests with

A few days ago, I connected one of UART pins(tx pin) to DT pin of ADF7xxx mb3Z directly as I attach the picture below.

The thing is that after hacking two pins, ADF7023 software can't connect the hardware.

Even though I disconnected the two pins, the software hasn't worked.

Please let me know why it's not working and how I can solve this problem.

Thank you in advance.

adf7021-N

vardhan0806 — Tue, 03 Feb 2026 21:00:54 GMT

my name is harsha ;communications subsystem team member of parikshit student satellite team ;manipal. i have gone through your feedback .these are the errors what i'm going through .so could you kindly go through the report and give us a valuable feedback

design note values:

for matching components-

c1=12pf

c2=18pf

c3=10pf

l1=100nH

l2=200nH

l4=150nH

c23=15pf

for loop filter:

C13=470 PF

c12=15000 PF

C11=1000 PF

R1=1000 OHM

R2=390 OHM

LOOP FILTER BANDWIDTH-60KHZ

SOFTWARE VALUES-

FOR MATCHING FILTER:

THE VALUES COMING SAME

FOR LOOP FILTER

C13=820PF

C12=10nF

C11=330PF

R1=750 OHM

R2= 1.5KOHM

LOOPFILTER BANDWIDTH-61.6KHZ

LEXT =19.9nH but where as the graph value in AN 859 is more than 25nH

so can you tell me which one is correct or am i wrong some where in my analysis

adf7021-N

vardhan0806 — Tue, 03 Feb 2026 21:00:53 GMT

hi;

can u suggest me from where i can get adf7021-N hil software codes for the working of adftransceiver

adf7021-v

vardhan — Tue, 03 Feb 2026 21:00:41 GMT

hi guys i was using adisrd design studio for adf7021-v at 145MHZ.actually i was simulating the results without using external components and paramater values of the lbw can i use those values or it is software mistake

EVAL-ADF7021-NDB9Z

salviador — Tue, 03 Feb 2026 21:00:34 GMT

Hi , I need schematic and component list of EVAL-ADF7021-NDB9Z this evolution board is ADF7021-N transceiver work 169Mhz.

GFSK transceiver multi carrier frequence & multi baud rate

yassinefugi — Tue, 03 Feb 2026 21:00:28 GMT

Hello,

I am looking for a tranceiver multi carrier frequence & multi baud rate for the ISM band 868 MHz, I have seen the component ADF7023

http://www.analog.com/static/imported-files/data_sheets/ADF7023.pdf

Application for smart meter , 802.15.4g

Thanks in advance for your help.