NXP i.MX 8M family of applications processors

NXP i.MX 8M family of applications processors

Outstanding audio, voice and video processing

The i.MX 8M family of applications processors based on Arm® Cortex®-A53 and Cortex-M4 cores provide industry-leading audio, voice and video processing for applications that scale from consumer home audio to industrial building automation and mobile computers.


Key Features

High-Performance: 4x Cortex-A53 up to 1.5 GHz & Cortex-M4 @ 266MHz
Video quality with full 4K UltraHD resolution and HDR(Dolby Vision, HDR10, and HLG)
Audio pro fidelity with more than 20 audio channels each 32-bit @ 384kHz
3D Graphics Acceleration
Optimized for fanless operation, low thermal system cost,and long battery life
Flexible high speed memory options: DDR4, LPDDR4 and DDR3L up to 3200 MTS
The newest high-speed interfaces for flexible connectivity: USB 3.0, Gb Ethernet and PCIe 2.0
The newest high-speed interfaces for flexible connectivity: USB 3.0, Gb Ethernet and PCIe 2.0.Fully supported by NXP’s 10 and 15-years Longevity Program

Related Videos

Video: i.MX 8M introduction
Video: Solutions for Secure, Connected Industrial Designs enabled by i.MX 8M Applications Processorn

Evaluation Kit for MCIMX8M i.MX 8M Processor

The NXP i.MX 8MQuad Evaluation Kit (EVK) provides a platform for rapid evaluation of the i.MX 8MQuad, i.MX 8MDual and i.MX 8QuadLite Applications Processors.


Short on MLCCs? Choose Panasonic Polymer Series!

Short on MLCCs?
Choose Panasonic Polymer Series!

2 EASY STEPS TO IDENTIFY YOUR RIGHT FIT…

1. VOLTAGE NO DERATING REQUIRED…

2. SMOOTHING CIRCUITS DEPENDENT UP ON…


*Only infotainment or non-safety critical circuits

Panasonic has expanded the CS, CT, and CX SP-Cap series to include higher voltage caps with range up to 35V. The newest additions to the SP-Cap product line features high voltage, low profile, high-temperature reflow, and unique electrode materials for high withstanding voltages. The higher voltage SP-Caps are used with DC/DC converters, output signal stabilization, and filtering. Panasonic’s SP-Cap Polymer Organic Aluminum Capacitor is a surface mount aluminum electrolytic capacitor that uses a conductive polymer as its electrolyte in layered aluminum construction. The SP-Cap product line from Panasonic consists of multiple series that offer capacitance range up to 560µF, voltage range from 2VDC to 35VDC, and the lowest ESR/impedance in the industry, achieving very good noise suppression and transient response. Unlike MLCCs, SP-Caps are free from temperature drift and DC/AC bias characteristics. In addition, voltage deration is not needed in SP-Caps, as in tantalum capacitors, due to their safety features. SP-Caps are the perfect solution for input and output capacitor for various DC/DC converters.

POSCAP utilizes sintered Tantalum as an anode sytem and highly conductive polymer created with Panasonic’s unique method as a cathode system. This enabled POSCAP to be thin, small and at the same time have low ESR (Equivalent Series Resistance) and superior high frequency characteristics. These features make POSCAP one of the best candidates for digital/high frequency applications. POSCAP also has high reliability and heat resistance.

OS-CON is an aluminum solid capacitor with high conductive polymer. OS-CON acquires low Equivalent Series Resistance (ESR), excellent noise reduction capability and frequency characteristics. In addition, OS-CON has a long life span and its ESR has little change even at low temperatures since the electrolyte is solid.

View whitepaper on polymer capacitors as a replacement for MLCCs

Newark element14’s Expanded Inventory

Newark element14 Have Expanded Their Inventory…

Newark element14 has expanded their inventory of cables, cable assemblies, and single wire products! With items from the industry’s top suppliers in stock and ready to ship today, they have exactly what you need to get your project on the right track.

Browse Newark element14’s Wire & Cable Products

Featured Products

Variable Frequency Drive (VFD) Cable

Designed to overcome the challenges of high voltage spikes, high noise levels, and adverse environmental conditions, the VFD cable was built to last and demonstrates superior performance and reliability

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ÖLFLEX Flexible Power & Control Cable

A multi-conductor cable with a highly oil-, coolant-, and solvent-resistant thermoplastic polymer jacket suitable for control and power applications, and designed for dry, damp, and wet conditions

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ThermoThin Hook-Up Wire

ThermoThin is versatile and useful for various applications where space is at a premium and extreme temperatures must be withstood with its thinner walls and ability to run long continuous lengths.

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NXP’s MMA8451QR1

Accelerometer ahoi!

Process computer designs usually start out with an accelerometer. As reliability problems creep in, making the switch to a more “professional” solution is beneficial.

Accelerometers are based on the MEMS principle: instead of being a purely solid-state affair, the inside of the chip contains a micromechanical motion sensor along with a small mass. In addition to that, a set of transducer circuits are provided, leading to the block diagram shown in figure one.

Accelerometers can be pretty complex

…Accelerometers can be pretty complex

Adding the part to an application circuit, also, is not difficult. Figure two shows the I2C interface along with a few decoupling capacitors – if all of this is in place, the circuit is ready to rumble.

Tug along a few capacitors, and be happy with your accelerometer…

Tug along a few capacitors, and be happy with your accelerometer

Sadly, the MMA8451QR1 is yet another 3V6-limited part, and can not live in a 5V domain. This is problematic, as the LDO voltage regulators tended to be responsible for most of the component failures yours truly saw when importing breakout boards from China.

Advanced features

NXP is among the most experienced designers of accelerometer circuits. The I2C interface lets you define all kinds of interrupts, which get fired off even if the main CPU is not monitoring the data stream transmitted via the I2C. Of course, four different G levels can be programmed into the chip, thereby letting you choose between higher accuracy and a larger measurement range.

Processor load is minimised via two nifty design features. First of all, the 14bit resolution can be artificially reduced to 8 bits per channel, thereby cutting bus congestion in half. If that is not enough, a 32 value FIFO buffer allows your CPU to reuse the bus temporarily.

Sadly, the very difficult-to-prototype part does not play well with others. It supports but two I2C addresses, thereby making the deployment of large sensor networks difficult.

Is it worth it?

If your system finds itself in a high reliability environment, designing a custom board is a sure-fire way to eliminate accelerometer-borne troubles. However, the money issue remains.

Even if you let OEMSecrets minimise your parts cost, be aware that the competitor from China is fierce and hungry. Projections showed that a 20% failure rate still leaves China in front – if you have the time and capacity to perform thorough burn-in tests to weed out unreliable voltage regulators.

Texas Instruments’ PGA20 x series

One, Two, Gain!

Test equipment and sensors both profit from amplifiers which change their gain on the fly. One of Texas Instruments evergreens recently saw quite a bit of additional attention.

From a technical point of view, the part is extremely simple. As shown in the figure, the part – in essence – is an operational amplifier which subtracts the two inputs and emits the result after multiplying it with a specified gain factor. The really interesting aspect is the set of digital inputs which allow users to pick the wanted voltage level comfortably.

PGA20 x parts are easy to use

…PGA20 x parts are easy to use

Texas Instruments provides two different part families, which differ by the gain levels implemented. Figure two shows the available amplifier levels – simply order the one ideally suited to your application.

Texas Instruments provide two amplification classes…

Texas Instruments provide two amplification classes

While the parts power supply demands – it can work from a dual 6V supply but works best with +/-15V – are handle-able, be aware that the PGA family’s full gain bandwidth is limited to a few ten Kilohertz at best. This, clearly, is not a part intended to handle high-speed signals.

A question of performance

Being a development by Burr Brown, the PGA20 x family comes with a group of nifty tweaks not found in other opamp families. For example, output sensing is not done inside of the chip – instead, a dedicated pin lets you “slide in” amplifiers as shown in figure three.

The power booster’s gain error is eliminated via the feedback circuit…

The power booster’s gain error is eliminated via the feedback circuit

The part can even be cascaded in a “family group”. If one PGA20 2 and one PGA20 3 are ganged up, the amount of selectable amplification levels increases greatly.

Conclusion

While the PGA20 2 / PGA20 3 family definitely is not the newest part on the market, it is a well-proven design which saw use in more than one piece of high-value test equipment. If your circuit can live with the relatively moderate speed and the large DIP housing, definitely to give the part a chance!

Using NXP’s NXQ1TXH5 Qi Charging Circuit

QIck charging

Adding wireless charging to furniture and other consumer goods is a nice way to add some oomph to an otherwise boring product. NXP’s NXQ1TXH5 provides an interesting, albeit difficult-to-prototype way around the problem.

Creating a Qi-compatible is as easy as assembling the example circuit shown in figure one. From a technical point of view, the diagram is full of decoupling capacitors but does not require much in terms of complexity. The main issues are a) finding a correct coil and b) prototyping the device – NXP uses a 5 mm x 5 mm, 32-pin HVQFN package which is not really suited to non-reflow soldering processes.

some people would call this circuit a capacitor’s grave

…some people would call this circuit a capacitor’s grave

Advanced functionality

While most charging ICs limit themselves to simply providing the oscillating field needed for transferring power, NXP adds a few extremely nifty features to its chip. First of all, the NXQ1TXH5 is able to monitor and restrict the amount of power supplied to its clients. This way, multiple chips can power themselves from a single USB wallwart. Sadly, this process does not have unlimited efficiency – look at figure two to see a power derating curve.

QI’s already-bad efficiency becomes terrible if but small amounts of power are to be transferred

…QI’s already-bad efficiency becomes terrible if but small amounts of power are to be transferred

User convenience is enhanced by the presence of LED and buzzer outputs: emitting a satisfying beep as charging starts makes handling the charger so much more pleasant. Finally, the part also has an I2C interface, which is not documented.

Power consumption is reduced via a dedicated pinging circuit. When no device is present, NXPs chip hibernates the main Qi charging system and emits special waveforms to detect hardware – this way, standby can be accomplished with minimal power consumption.

Sadly, the public datasheet of the part is short and tardy – developers who want to use the chip in anger should ask their local NXP office for further information and/or a more detailed set of documents.

BAV99 and BAS16 – Smart Diodes

Smart diodes

Two-terminal diodes are among the best-known components in electrical engineering: electronics 101 cannot be passed without them – BAV99 and BAS16. Combining multiple diodes reduces part count and assembly cost.

Candidate number one is the BAS16: a classic diode with 100V of reverse voltage capability and a decently fast switching time of about 4nS. It I s interesting mainly due to the VV and VY families, whose configuration is shown in the image:

With the BAS16, it takes three to tango (Source: NEXPERIA)

With the BAS16, it takes three to tango

This arrangement makes the parts ideally suited to attenuators: if a series of similar elements must be protected from reverse voltages, a BAS16VV reduces the number of components the pick and place machine must touch.

Sadly, the BAS16 family is extremely wide: in addition to the three diode parts, single diodes can also be had (albeit in the larger SOT23 form factor). Keep an eye when ordering, as mess-ups lead to production delays.

Tango to Two…

Classic four diode bridges usually come as four diodes or a dedicated rectifier pack. Vishay’s BAV99 combines two diodes in series and provides an additional middle tap output as shown in figure two.

BAV99 - the middle tap makes good use of SOT23 housing’s three pins

…the middle tap makes good use of SOT23 housing’s three pins

Obviously, two BAV99s make for a great rectifier – a job hampered by their relatively low reverse voltage resistance which is in the area of 70V. Another interesting application involves separating “areas of concern” – if a process computer pulls an attenuator down, adding a diode chain provides a small additional buffer for other recipients.

Nexperia’s version of the BAV99 is even more advanced – as shown in figure three, they even offer a housing with two of these diode assemblies combined.

The BAV99S contains four diodes…

The BAV99 S contains four diodes

Should we tango?

From an economic point of view, simplifying boards almost always makes sense. When deciding for and against these diodes, do not limit yourself to price and space factor-based models. While the two parts mentioned in this story are quite available and have been on the market for some time, always keep in mind the incre

AD9833 from Analog Devices

Waveform-a-gogo!

While arbitrary waveform generators are among the most helpful tools in the laboratory, they tend to spend most of their time outputting sines, triangles, and rectangles intended to stimulate sensors or actors. Analog Devices AD9833 is a compact IC dedicated to precise waveform emission.

From a technical point of view, the part – its outline is shown in figure one – is but a simple implementation of the DDS principle.

the analog part of the AD9833 is pretty standardized

…the analog part of the AD9833 is pretty standardized

The part has an internal pulldown resistor of 200 Ohms, and supplies a 0.6V pp output signal. Its 10 bit resolution is used fully, as the sinewave lookup table consists of 12bit wide quines. This leads to limited spectral purity – if you need an extremely clean sine, the AD9833 is not your part.

As for input voltages, levels from 2.3 to 5.5 volts pose no problems for the chip. Bringing the part up is not particularily difficult: an external clock frequency must be provided by the host circuit. Other than that, Analog Devices recommends heavy decoupling as the part can work at speeds of up to 25 MhZ.

Digital intelligence

Output frequency and desired waveform are set using an SPI interface. Two 16 bit words are needed for a complete parametrization, the datasheet provides further information on the actual word format. In theory, the part can change the desired frequency quite fast – a latency of between seven and eight MCLK ticks is required until new settings take effect.
Due to advancements in TMI, an AD9833-based function generator is unlikely to find many a buyer outside of education. The part should, instead, be used for sensor and TDR applications: if a detector works best with sines or triangles, Analog Devices saves you the effort of performing DDS.

Finally, let us give an honorable mention to the datasheet by clicking here. It provides a decently thorough discussion of the design, and might be interesting for process computer jockeys.

Is it worth it?

If your application needs sines or triangles with variable frequency (and can live with the limited resolution of the steps), the AD9833 definitely is a good choice. Using it purely as a squarewave oscillator, on the other hand, must be assessed carefully – a digital counter based solution can be cheaper.

Latest Solutions from CUI & Digi-Key

Latest Solutions from CUI & Digi-Key

Power Solutions

Metal Case AC-DC Power Supplies

Offering power ratings from 35 W to 350 W, CUI’s VGS-B series features low 30 mm profiles and packages as small as 99 mm x 82 mm x 30 mm. Delivering no-load power consumption as low as 0.3 W and an operating temperature range of -20°C to +70°C, these rugged, metal-enclosed power modules are ideal for reducing standby power usage and optimizing available space in commercial and industrial applications.

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Multi-Stage Peltier Modules

With two modules mechanically stacked for improved heat-pumping capabilities, CUI’s multi-stage Peltier modules feature high temperature differentials up to 105°C, reliable solid-state construction, and precise temperature control. Several high performance multi-stage Peltier modules are also offered with CUI’s arcTEC™ structure, which delivers longer thermal cycle life and improved thermal performance.

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Audio Solutions

Waterproof Micro Speakers

CUI’s CMS series of waterproof micro speakers with Ingress Protection (IP) ratings of IP67 are housed in compact packages as small as 15 mm x 11 mm. These rectangular models feature sound pressure levels (SPLs) ranging from 90 dB to 93 dB at 0.1 meters, nominal inputs of 0.7 W, resonance frequencies from 550 HZ to 800 Hz, and impedance ratings of 6 ohms or 8 ohms.

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Waterproof Electret Condenser Microphones

Housed in compact packages with diameters as small as 4 mm and depths as low as 1.5 mm, CUI’s waterproof electret condenser microphones are ideally suited for a variety of industrial and outdoor applications where moisture and environmental contaminants are present. The omnidirectional microphones feature ingress protection (IP) ratings up to IP67, sensitivity ratings as low as ‑42 dB, and signal to noise ratios from 57 dBA up to 70 dBA.

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Motions Solutions

AMT Modular Encoders

Utilizing capacitive sensing technology, CUI’s incremental, absolute and commutation AMT modular encoders offer a highly ruggedized solution without sacrificing accuracy. With up to 22 programmable resolutions, 9 different shaft sizes, and an operating temperature range up to -40°C to 125°C, the AMT kits deliver increased flexibility during prototyping and the ability to simplify the BOM during production.

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Stepper Servo Motors

CUI’s NEMA-AMT112S series of stepper servo motors combines an AMT11 incremental encoder and compact stepper motor into one highly reliable, convenient package. Featuring a range of NEMA frame options, shaft diameters from 4 mm to 6.35 mm, and a fully programmable encoder preset to 4096 PPR, these motors provide closed-loop feedback when paired with a controller for a complete servo system.

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About CUI

Supporting Engineers from Start to Finish

CUI is an electronic components manufacturer with an unwavering commitment to design engineers. The company specializes in a diverse range of product technologies, including power, interconnect, audio, motion control, and thermal management.

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