Datasheet > DA7282

DA7282

更新时间： 2024-11-26 14:57:19

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
88页	1549K
描述
Ultra-Low Power, Wide-Bandwidth Haptic Driver

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DA7282 数据手册

DA7282

LRA/ERM Ultra-Low Power Haptic Driver with

Multiple Input Triggers and Integrated

Waveform Memory

General Description

DA7282 is a linear resonant actuator (LRA) and eccentric rotating mass (ERM) haptic driver offering

automatic closed-loop LRA resonant frequency tracking. The feature guarantees consistency across

LRA production tolerances, operating temperature, aging, and mechanical coupling. DA7282 offers

wideband operation that fully utilizes the capabilities of newer wideband and multi-directional LRAs.

The differential output drive architecture and continuous actuator motion sensing enable efficient,

calibration-free playback and minimize software complexity. Featuring wake-up on General Purpose

Input (GPI) sequence triggers and/or I²C activity, DA7282 automatically returns to a low quiescent

current state (typically 0.68 µA) between playbacks. In OFF mode the device consumes only 5 nA

making it suitable for low power applications.

To reduce system complexity, an integrated Waveform Memory allows haptic sequences to be pre-

loaded to DA7282. Independent sequences can be triggered, with low-latency (0.75 ms), by up to

three separate input pins without host interaction. Haptic sequences can also be streamed to

DA7282 from an external source via I²C or pulse width modulated (PWM) signals.

DA7282 actively monitors the back electromotive force (BEMF) while continuously driving and

applies closed-loop Active Acceleration and Rapid Stopping for sharper clicks and a higher fidelity

user experience. This offers significant advantages over existing solutions that need to move into a

high-impedance state during drive to measure the BEMF, which adds a considerable amount of

inactive time to the sequence and lowers the effective click strength for a given LRA.

Key Features

■

LRA or ERM drive capability

■

No software requirements with embedded

operation

Automatic LRA resonant frequency tracking

Wideband LRA support

I²C and PWM input streaming

Low latency (0.75 ms) I²C/GPI wake-up from

low power consumption IDLE state,

I_Q= 0.68 µA

■

Differential PWM output drive

Current driven system to deliver constant

actuator power

■

Automatic short circuit protection

Ultra-low power consumption, I_Q= 5 nA, when

device is disabled

■

Ultra-low latency (0.15 ms) wake-up from

STANDBY state, I_Q= 0.8 mA

■

Ultra-low power consumption, I_Q= 0.68 µA,

with state retention in IDLE state

Three GPI pins for triggering of up to six

independent haptic sequences

Supply monitoring, reporting, and automatic

output limiting

On-board Waveform Memory with amplitude,

time, and frequency control

■

Open- and closed-loop modes

Custom wave drive support

Active Acceleration and Rapid Stop

technology for high-fidelity haptic feedback

Small solution footprint requiring only one

decoupling capacitor in both WLCSP and QFN

■

Actuator diagnostics and fault handling

Configurable EMI suppression

Datasheet

Revision 3.1

10-Feb-2022

CFR0011-120-00

1 of 87

12 3 4 5 6 7...88

中文翻译

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与DA7282相关器件

型号	品牌	获取价格	描述	数据表
DA7283	RENESAS	获取价格	Ultra-Low-Power, Wide-Bandwidth Haptic Driver
DA7400	RENESAS	获取价格	Stereo HP CODEC for Consumer Applications Requiring Hi Res Audio and High Performance
DA7401	RENESAS	获取价格	High-performance, Ultra-low-power Mono Hi-fi Codec
DA7402	RENESAS	获取价格	High-performance, Ultra-low-power Stereo Hi-fi Codec With Wideband Digital ANC
DA7403	RENESAS	获取价格	Active Noise Cancellation and Beamforming CODEC
DA78L05	DCCOM	获取价格	TECHNICAL SPECIFICATIONS OF 3-TERMINAL POSITIVE VOLTAGE REGULATOR
DA78L05A	DCCOM	获取价格	TECHNICAL SPECIFICATIONS OF 3-TERMINAL POSITIVE VOLTAGE REGULATOR
DA78L06	DCCOM	获取价格	TECHNICAL SPECIFICATIONS OF 3-TERMINAL POSITIVE VOLTAGE REGULATOR
DA78L06A	DCCOM	获取价格	TECHNICAL SPECIFICATIONS OF 3-TERMINAL POSITIVE VOLTAGE REGULATOR
DA78L08	DCCOM	获取价格	TECHNICAL SPECIFICATIONS OF 3-TERMINAL POSITIVE VOLTAGE REGULATOR

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