Ambient Light Sensor
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Identification and Background
The iPad is a tablet computer announced by Apple on January 27, 2010. It contains many of the same features as Apple's iPhone but is more than twice the size.
It features multi-touch interaction with print, video, photo, and audio multimedia, internet browsing, and runs most iPhone OS apps. The device has an LED-backlit 9.7-inch colour LCD display and uses a virtual keyboard for text input, although one of the optional accessories offered by Apple is an iPad keyboard dock.
Announce date: January 27, 2010
Discontinued: March 11, 2011
Colour display: 9.7 inches (25 cm) LED-backlit in-plane switching LCD, made by Innolux, a subsidiary of Foxconn
Processor: 1 GHz Apple A4 system-on-a-chip
Graphics: 1024×768 pixel (XGA resolution), 20cm × 15cm, 132ppi
Storage: 16, 32 or 64 GB flash memory
Wireless: Integrated 802.11n and Bluetooth 2.1 + EDR
Battery: Built-in lithium-polymer 25 W·h (10 h usage, 1 month standby)
Weight: 1.5 pounds (680 g), 1.6 pounds (730 g) (3G Model)
Dimensions: 9.56 inches (24.3 cm) x 7.47 inches (19.0 cm) x 0.5 inches (1.3 cm)
Construction Materials: Aluminum/Glass/Plastic
LCD Type: IPS
Logic Board: 28.2 grams
LCD: 151.9 grams
Case: 138.2 grams
Dock Connector Cable: 8.1 grams
Speaker Assembly: 16.6 grams
Ambient Light Sensor: 0.4 grams
Lower Antenna: 1.7 grams
Headphone Jack: 0.6 grams
Control Buttons: 1.3 grams
Battery: 147.8 grams
Antenna: 1.9 grams
Glass/Digitizer: 147 grams
Display Frame: 42.2 grams
Main processor: Apple A4
DRAM: Samsung K4X2 256MB
Flash memory: Samsung K9LCG08U1M 8 GB NAND
802.11n WiFi + Bluetooth 2.1: Broadcom BCM4329XKUBG
I/O controller: Broadcom BCM5973
Capacitive touchscreen controller: Broadcom BCM5974
Touchscreen line driver: Texas Instruments CD3240A1
- Track down a number of hardware problems using the iPad Troubleshooting page.
- Diagnose and repair screen backlight issues with our iDevice Backlight Troubleshooting Page.