Haptic Drivers
Low-Power, High-Definition Haptic Drivers: the Buzz in Next Generation Human-Machine Interfaces
Dialog Semiconductor’s DA728x family High-Definition (HD) Haptic Driver provides drive capability at up to 1kHz to cover the broad range of human touch sensitivity. With market-leading idle current consumption (360nA), Linear Resonant Actuator (LRA) resonant frequency tracking capability, and low latency for tact button replacement applications, the DA728x family creates a buzz in smartphones, gaming platforms, wearables, and similar systems.
Powering the Next Generation of Haptic Experiences
触觉致动器和汽车是多元化rapid pace. Gone are the days of simple coin-cell type LRA motors and small ERM (Eccentric Rotating Mass) pager motors. Today’s haptic actuators offer different experiences for different markets. Whether it’s a small pancake LRA for a smart-watch or a large, or a multi-directional, LRA for gaming controllers, Dialog’s patented current drive outputs support all of these motors with up to 500mA of current.
Standalone Haptic Driver Portfolio
| Product | Description | 雷竞技安卓下载 |
|---|---|---|
| DA7280 | Low Power LRA/ERM Haptic Driver | Smartphones, Gaming, Wearables, Automotive, Personal Medical, Touch Displays, Industrial Human-Machine Interfaces |
| DA7281 | Low-power, high-definition haptic driver for multi-driver systems | Smartphone, Gaming, Wearables, Portable computing systems, Computing – all-in-ones (display), Notebook PC, Any display driven consumer product, Automotive, Industrial, Medical |
| DA7282 | Ultra-low standby current, high-definition haptic driver for wearables and related systems | Smartphone, Gaming, Wearables, Portable computing systems, Computing – all-in-ones (display), Notebook PC, Any display driven consumer product, Automotive, Industrial, Medical |
Stay connected
Get in touch with us directly through our worldwide sales offices, or contact one of our global distributors and representatives.
Inquiries Distributors and Representatives Register for newsletters
Back to results
5 months ago
DA7212 eval board configuration
Posted byerictpeters0 points 4 repliesI am trying to stream MIC1 and MIC2 single-ended audio over I2S using the DA7212 eval board. I'd like to be able to sample at 8, 11.025 and 16 kHz sample rates in PLL bypass mode.
As a starting point, I tried loading the "USB Record" automated sequence in SmartCanvas with jumpers in the default positions (USB_MCLK, PLL enabled, 48 kHz sample rate). However, I found that no audio stream is generated in slave mode. The SAM3 processor does not appear to be generating any clock outputs on BCLK or WCLK. If I switch to master mode, I get what sounds like white noise in Windows. I noticed that DAI_OFFSET is set to 0x01, so I changed it to 0x00 and the noise clears up. I am able to hear a sine wave tone injected into MICL_P or MICL_N, but I am also getting ~1 Hz periodic impulse noise (clicking/buzzing), only when the tone is present. I tried to eliminate the variable of the Windows driver by routing the input mixers to the output mixers and to headphone output port, and the noise is not present. I also notice that the tone frequency of the headphone output and USB output are not the same, indicating an improper sample rate. However, the measured WCLK and BCLK rates are 48 kHz and 1.536 MHz.
There is a demo script that came with the eval board files called "8kHz ultra low power mode 16bit I2S slave mode no pll". I tried running this with an external 12.288 MHz MCLK, but again, the SAM3 does not generate any clocking signals in slave mode. I get no audio in master mode, until I changed several input and sample rate settings, until eventually I get similar results to those above.
The comments in the script file suggest using an Audio Precision SYS-2722 with PSIA-2722 serial interface adapter. I do have a SYS-2722, but I do not have the PSIA-2722 adapter. I can try using a SPDIF connection to the SYS-2722, but the WM8804 transceiver on the eval board only supports sample rates down to 32 kHz.
Is it possible to configure the SAM3 as master? It is not critical for my application, I just want to see what effect it will have on the noise. Please let me know what configuration I should be using for my application.
5 months ago
Hi Eric, sorry for the delay. I thought this was a post from one of my colleauges (also called Eric Peters) - apologies. I'm going to have one of the US team reach out to you and go through this with you ASAP to get back on track. BR John
2 months ago
Can you get somewhere PSIA-2722 adapter? Belive me it is more easier as if you use SPDIF connection where WM8804 transceiver supports sample rates down to 32 kHz which can fail all work.
5 months ago
For reference, I am using DA7212 smartcanvas version 1.4.0.3.