Monolithic optical proximity sensor + ambient light sensor IC | New product new technology

Monolithic optical proximity sensor + ambient light sensor IC

Overview

ROHM ICs meet market needs for greener, more user-friendly sensing devices that provide greater interactivity with lower power consumption. In particular, ROHM's monolithic optical proximity sensor + ambient light sensor IC is ideally suited for portable products of all types.

Typical Features
Shutdown, measurement interval, and proximity detection sensitivity set via I²C Compact 2.8×2.8×0.9mm package: WLGA010V28 <Proximity sensor block> Digital 8bit output (I²C) Detection distance: 10 - 100mm (set via I²C) IrLED current driver built in Sunlight cancelling circuit built in Measurement interval range: 10ms - 2000ms <ALS> Digital 16bit output Reduced sensitivity variation (±15%) Measurement interval can be set between 100ms and 2000ms

Key Feature 1 : Integrated ambient light sensor block suitable for backlight dimming

ROHM's ambient light sensor reduces power consumption in portable devices and mobile phones equipped with an LCD in a variety of environments by controlling the backlight brightness based on ambient conditions. In addition, in order to prevent malfunctions during conversation or key operation (i.e. when the user's face/a finger is nearby) a proximity sensor is integrated that detects objects and prevents certain operations. Also, the backlights are turned OFF during this time, further reducing power consumption. Only ROHM provides both dimming and malfunction prevention capability on a single chip.

Key Feature 2 : Spectrum sensitivity close to the human eye

The BH1772GLC's ambient light sensor features spectral sensitivity characteristics close to the human eye, resuting in stable sensitivity, regardless of light source (i.e. incandescent, fluorescent, sunlight). The result is optimum performance and visibility in a variety of environments.

Key Feature 3 : Brightness and proximity sensors feature intermittent operation for lower power consumption

Mobile phones and portable devices are normally battery-driven. In order to incrase operation time, the internal components must bring added functionality. The BH1772GLC's ambient light sensor and proximity sensor blocks feature intermittent operation that further reduces power consumption.

Intermittent Operation Setting	Brightness Sensor Function :	100ms to 2000ms
Intermittent Operation Setting	Proximity Sensor Function :	10ms to 2000ms

Brightness and proximity sensors feature intermittent operation for lower power consumption

Lineup

Part No.	Proximity Sensor Function	Ambient Light Sensor Function	Input / Output I/F	Power Supply Voltage (V)	Brightness Measurement Range (lx)	Proximity Detection Range (µW/cm²)	Operating Temperature Range (ºC)	Package
NEW BH1772GLC	○	○	I²C BUS	2.3 to 3.6	0 to 65,000	1 to 100,000	-40 to +85	WLGA010V28

■Ambient Light Sensor ICs

Part No.	Type	Output Type	Power Supply Voltage (V)	Sensitivity Variations (%)	Brightness Measurement Range (lx)	Package
☆ BH1680FVC	High sensitivity, Infrared rays shutout	Analog output (Current source)	2.4 to 5.5	±15	0 to 65,000	WSOF5
BH1721FVC	High accuracy	Digital output (I²C)	2.4 to 3.6	±15	0 to 65,000	WSOF5
NEW BH1730FVC	High sensitivity	Digital output (I²C)	2.4 to 3.6	±15	0 to 65,000	WSOF6
NEW BH1751FVI	High accuracy, Infrared rays shutout	Digital output (I²C)	2.4 to 3.6	±20	0 to 65,000	WSOF6I