APA107 LED chip, the upgrade of APA102C, better and cheaper than APA102 SK9822

APA107 will be upgraded soon, the PMW can be 26-28kHz

Contact us

TEST RESULT

 Our customer's test result: "The logarithmic curve of the APA107 starts more logic in the beginning:

The APA102 gave nearly NO intensity in the very beginning. (This gave no nice display)Now there is some small brightness in the beginning of the APA107 curve. What is very good!!!! "

APA107 LED Product Overview
APA107 is a type ic for the three-color RGB Dimming control strip and string, This IC using the CMOS process to provide three-color RGB LED output driver to adjust the output with 256 grayscale and 32 brightness adjustment, APA107 with 2 signal output way , one is clock ,another is data, the clock and data is synchronizated ,so that the crystal cascade piece of output movement is sychronizated .

RGB APA107 LED Strip

White APA107 LED Strip

APA107 LED Feature
CMOS process,low voltage ,low consumption
Synchronization of two-lane
Choose positive output or negative RGB three-color LED output
8 bit(256 level) color set ,5bit(32 level) brightness adjustment
Build-20ma constant current output
With self-detection signal build in support for continuous oscillation PWM
output ,can be maintained static screen

APA107 LED Main Application Field:
● Full color LED string light, LED full color module, LED super hard and soft lights, LED guardrail tube, LED appearance/scene lighting
● LED point light, LED pixel screen, LED shaped screen, a variety of electronic products, electrical equipment etc..

APA107 LED Mechanical Product Size (unit mm):

APA107 LED PIN Description

APA107 LED Application Circuit:

APA107 LED Block diagram:

(Absolute Maximum Rating)

Supply voltage -------------- -0.3-6.0V

Input voltage---------------- VSS-0.3 to VDD +0.3V

Operating temperature---------------- -40 to +70℃

Storage temperature------------------- -50 to +125℃

Note: Stress above those listed may cause permanent damage to the

devices

APA107 LED Electrical Characteristic:

APA107 LED Function Description:

  (1) cascading data structure

       Tandem N-LED:

Global bit:5 bit (32 level) brightness setting,while controlling R,G,B three-color

constant current output value,if set the global bit for the 10000( 16/31 ) is the output

current is half again the original PWM settings

APA107 LED PWM input and output signals Relations

(2). The number of pixel per second sent to the CKI frequency (FCKI) minus the Start

Frame bit divided by the number 40 the number of LED Frame bit 32, if the CKI

frequency(FCKI) to 512KHZ. The pixel number (512000-40)/32=15998, if the 50

second update Views can be connected in series LED number 15998/50=319. To

increase the number of cascaded IC CKI frequency

(3).POLAR to empty ,R,G,B for the negative output;POLAR access VSS ,R,G,B is

positive output

(4).VEN: self-detection

DATA field to the middle of 3 bit is B,G,R in the MSB of the opposite

phase, otherwise regarded as invalid data. VEN close to the empty when the

self-detection; when VEN VSS then activated self-detection

(5).CSEL to empty when the CKO and CKI,RP:CSEL connected with VSS when the

CKO compared with CKI.

APA107 LED SMD:

Compare with APA102C SK9822,  the advantage of APA107,

1, Intelligent reverse connect protection, the power supply reverse connection does not damage the IC.

2, The control circuit and the LED share the only power source.

3, Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel point.

4, Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion not accumulate.

5, Built-in electric reset circuit and power lost reset circuit.

6, Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color display, and scan frequency not less than 400Hz/s.

7, Cascading port transmission signal by single line.

8, Any two point the distance more than 5m transmission signal without any increase circuit.

9, When the refresh rate is 30fps, cascade number are not less than1024 points.

10, Send data at speeds of 800Kbps. 

11,The color of the light were highly consistent, cost-effective.. 

Applications 

12, Full-color module, Full color soft lights a lamp strip.

13, LED decorative lighting, Indoor/outdoor LED video irregular screen. 

More details, pls contact us.

NEWSTAR LED CO., LIMITED

info@newstarleds.com

www.newstar-ledstrip.com

APA102/APA104 Compare With WS2812B/WS2811

NEW: APA107 (the upgraded chip of APA102)

APA107 will be upgraded soon, the PMW can be 26-28kHz.

Firstly you should know what is APA102 chip/APA107 chip, WS2812B chip, SK6812 chip more details, pls click below tag for reference

APA102 Chip     APA107 chip       WS2812B chip   SK6812 chip

APA102 led strip          
(price: info@newstarleds.com)

APA107 pixel led strip lights

WS2812B led strip 

(Left is WS2812B)

Below all analysis was got from our customer: 

"I contrast to the very timing-sensitive one-wire protocol of the WS2812,
the APA102 uses a stand two-wire fire SPI protocol – one clock line and one data line.
Each LED has two inputs and two outputs which can be daisy chained. At the first
sight, this may seem wasteful, but it has the advantage of being supported by standard
microcontroller periphery and it is insensitive to timing variations. Due to the critical
timing requirement, it is not possible to control the WS2812 from SOCs with
multitasking operating systems, such as the Raspberry Pi. This should not be an issue
with the APA102. Furthermore, the data can be transferred at an almost arbitrary
clock rate. I was able to control the LEDs with 4 MHz SPI clock without any hitch. It
appears that the maximum speed is mainly limited by the parasitics of the wiring. The
data format is shown below. NEWSTAR LED CO.,LIMITED

Dream Color APA102 LED Strip:http://www.newstar-ledstrip.com/productshow587.html

Each update consists of a start frame of 32 zeroes, 32 bits for every LED and an end
frame of 32 ones. I am not sure what the “End Frame” is good for, since its
encoding is indistinguishable from a LED set to maximum brightness and will simply
be forwarded to the next LED. In my experiments, omitting the end frame did not
have any impact.
One interesting addition is the “global” field for each LED, which allows to control
the brightness of the LED in 32 steps from 0 to 31. When trying different parameters,
I was quite surprised to observe that the LEDs did not show any visible

pulse-width-modulation (PWM) flicker at all when the global brightness was set to 31.This is quite different from the WS2812, which shows visible PWM flicker when
moving the LEDs.
Interestingly, the APA102 started to flicker once I set the global brightness to 30 or
below. To understand what was going on, I hooked up my scope to the power rails.
When the LEDs are turning on, they draw significantly higher current which leads to
a drop in voltage across the power rails. I previously used a similar method to
investigate the inner workings of candle flicker LEDs.
NEWSTAR LED CO.,LIMITED

The picture above shows the current modulation for RGB=255,255,255 and the
global brightness set to 16 (50%). The pulse width modulation is clearly visible in
the voltage signal at a frequency of 580 Hz, very similar to the 430 Hz of the

WS2812.

Next, I set the RGB value to 128,128,128 and kept the global brightness at 50%. The
result is shown above. Two PWM modulation schemes are superimposed in this
configuration. The global brightness is still modulated at ~582 Hz, while RGB value
is modulated at an approximately 32 times higher frequency, 19.2 kHz. This
frequency is significantly above the flicker fusion threshold, even when moving the
LED around, leading to an apparent constant brightness.
The very high PWM frequency is a pretty nice feature of these LEDs. In combination
with the higher update speed due to the SPI interface, they should be much better
suited for persistance-of-vision applications than the WS2812.
In summary, the APA102 show significant promise compared to the de-facto standard

WS2812:
       They can be controlled with a standard SPI interface. No critical timing
           required and much faster than the one wire protocol.
        They have an extremely high PWM frequency, allowing flicker-free POV
            applications.

        They are available in a special package with better heat sinking."

Posted by Jason Gong
http://www.newstar-ledstrip.com
Dream Color Pixel APA102 LED Chip diodes: http://www.newstar-ledstrip.com/productshow753.html