- 您现在的位置：买卖IC网 > Datasheet目录450 > ISL29029IROZ-T7 (Intersil)IC SENSOR LIGHT-PROXIMITY 8ODFN Datasheet资料下载
参数资料
| 型号： | ISL29029IROZ-T7 |
| 厂商： | Intersil |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC SENSOR LIGHT-PROXIMITY 8ODFN |
| 标准包装： | 3,000 |
| 带接近传感器： | 是 |
| 波长： | 530nm |
| 电源电压： | * |
| 输出类型： | I²C? |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
ISL29029
ALS
ACTIVE
ALS CONVERSION TIME =
100ms (FIXED)
SEVERAL μs BETWEEN
CONVERSIONS
100ms
100ms
100ms
100ms
100ms
TIME
0.54ms FOR PROX
PROX
CONVERSION
SENSOR
ACTIVE
TIME
SERIES OF
IRDR
(CURRENT
CURRENT PULSES
TOTALING 0.1ms
DRIVER)
TIME
SLEEP TIME
(PROX_SLP)
FIGURE 3. TIMING DIAGRAM FOR PROX/ALS EVENTS - NOT TO SCALE
The proximity sensor is an 8-bit ADC which operates in a similar
fashion. When proximity sensing is enabled, the IRDR pin will
drive a user-supplied infrared LED, the emitted IR reflects off an
object (i.e., a human head) back into the ISL29029, and a sensor
converts the reflected IR wave to a current signal in 0.54ms. The
ADC subtracts the IR reading before and after the LED is driven
(to remove ambient IR such as sunlight), and converts this value
to a digital count stored in Register 0x8.
The ISL29029 is designed to run two conversions concurrently: a
proximity conversion and an ALS (or IR) conversion. Please note that
Proximity Sensing
When proximity sensing is enabled (PROX_EN = 1), the external
IR LED is driven for 0.1ms by the built-in IR LED driver through
the IRDR pin. The amplitude of the IR LED current depends on
Register 1 bit 3: PROX_DR. If this bit is low, the load will see a
fixed 110mA current pulse. If this bit is high, the load on IRDR
will see a fixed 220mA current pulse as seen in Figure 4.
220mA
(PROX_DR = 1)
because of the conversion times, the user must let the ADCs perform
one full conversion first before reading from I 2 C Registers
PROX_DATA (wait 0.54ms) or ALSIR_DT1/2 (wait 100ms). The timing
between ALS and Prox conversions is arbitrary (as shown in Figure 3).
The ALS runs continuously with new data available every 100ms. The
110mA
(PROX_DR = 0)
PIN 8 - IRDR
T SLEEP
proximity sensor runs continuously with a time between conversions
decided by PROX_SLP (Register 1 Bits [6:4]).
Changes from ISL29028
The ISL29029 is identical to the ISL29028 with a few small
changes: the x29 photodiode structure has been improved for better
ALS linearity in high-IR conditions, and the x29’s PROX interrupt
scheme behaves as an out-of-window comparator (compared to the
x28’s PROX level-comparator with hysteresis). If the internal
registers are of concern to the customer, please contact Intersil for a
list of changes (internal register changes are independent of part
performance).
Ambient Light and IR Sensing
The ISL29029 is set for ambient light sensing when Register bit
ALSIR_MODE = 0 and ALR_EN = 1. The light-wavelength response of
the ALS appears as shown in Figure 6. ALS measuring mode (as
opposed to IR measuring mode) is set by default.
When the part is programmed for infrared (IR) sensing
(ALSIR_MODE = 1; ALS_EN = 1), infrared light is converted into a
current and digitized by the same ALS ADC. The result of an IR
conversion is strongly related to the amount of IR energy incident
on our sensor, but is unitless and is referred to in digital counts.
9
(IRDR IS HI-Z WHEN
NOT DRIVING)
FIGURE 4. CURRENT DRIVE MODE OPTIONS
When the IR from the LED reaches an object and gets reflected
back into the ISL29029, the reflected IR light is converted into
current as per the IR spectral response shown in Figure 7. One
entire proximity measurement takes 0.54ms for one conversion
(which includes 0.1ms spent driving the LED), and the period
between proximity measurements is decided by PROX_SLP
(sleep time) in Register 1 Bits 6:4.
Average LED driving current consumption is given by Equation 1.
I lRDR ; PEAK × 100 μ s (EQ. 1)
I lRDR ; AVE = -----------------------------------------------------
A typical IRDR scheme is 220mA amplitude pulses every 800ms,
which yields 28 μ A DC.
Total Current Consumption
Total current consumption is the sum of I DD and I IRDR . The IRDR
pin sinks current (as shown in Figure 4) and the average IRDR
current can be calculated using Equation 1. I DD depends on
FN7682.0
November 23, 2010
相关PDF资料 |
PDF描述 |
|---|---|
| ISL29033IROZ-T7 | IC PHOTO DETECTOR AMBIENT 6-ODFN |
| ISL29043IROMZ-T7 | IC SENSOR PROX/AMB LIGHT 10-ODFN |
| ISL29120IROZ-T7 | IC SENSOR LIGHT-DGTL I2C 6-ODFN |
| ISL5216EVAL1 | EVALUATION BOARD FOR ISL5216KI |
| ISL5217EVAL1 | EVALUATION BOARD FOR ISL5217KI |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL29030AIROZ-EVALZ | 功能描述:BOARD EVAL FOR ISL29030A RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| ISL29030AIROZ-T7 | 功能描述:IC PROXIMITY SENSOR AMB LT 8ODFN RoHS:是 类别:传感器，转换器 >> 多功能 系列:* 其它有关文件:Automotive Product Guide 标准包装:2,500 系列:- 传感器类型:光线和近程 输出类型:I²C? |
| ISL29030IROZ-EVALZ | 制造商:Intersil Corporation 功能描述: 制造商:Intersil Corporation 功能描述:ISL29030IROZ-EVALZ (PB-FREE ) EVALUATION BOARD - ROHS COMPLI - Bulk 制造商:Intersil Corporation 功能描述:ISL29030IROZ-EVALZ (PB-Free ) EVALUATION BOARD - ROHs Compli |
| ISL29030IROZ-T7 | 制造商:Intersil Corporation 功能描述:ISL29030IROZ PBFREE AUTONOMOUS LOW POWER ALS + PROXIMITY SEN - Tape and Reel 制造商:Intersil Corporation 功能描述:ISL29030IROZ PbFree Autonomous Low Power ALS + Proximity sen T/R |
| ISL29033IROZ-T7 | 功能描述:IC PHOTO DETECTOR AMBIENT 6-ODFN RoHS:是 类别:传感器，转换器 >> 光学 - 光电探测器 - 环境光传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 产品变化通告:Product Discontinuation 25/Jun/2012 标准包装:2,500 系列:- 带接近传感器:无 波长:- 电源电压:1.7 V ~ 2 V 电流 - 暗（标准）:- 电流 - 光（典型值）:- 输出类型:数字 - I²C 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UDFN 裸露焊盘 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。