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| TI 数码相机(DSC)解决方案 |
| 作者： 时间：2008-09-09 来源:eaw |
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尽管数码相机（DSCs）已经问世多年，但仅在最近几年随着技术的发展，其价格才为大多数消费者所接受。然而，分析家认为数码相机市场还将爆发新的革命。他们预言在2006年将售出9500万台以上的数码相机，而传统照相机的销售量将会下降。
下图为数码相机的方框图
数码相机组成元器件为：
MSP430F412/MSP430F413：微控制器
OPA358/OPA360/OPA361：针对便携式应用的最小型完整视频驱动器解决方案
TLV320AIC32/TLV320AIC31：低功耗、立体声音频编解码器
下面对各个元器件的性能和方框图进行描述：
Experience the ultimate system-on-a-chip (SoC) solution for low-power applications. MSP430F412/F413 features the combination of ultra-low power consumption and integrated high-performance analog peripherals—ideal for cost-, power- and space-sensitive applications.
Key Features
• Ultra-low power consumption of <1 A in standby mode at 2.2 V (typ) extends battery life
• 16-bit RISC architecture enables new applications at a fraction of the code size
• High-performance, integrated analog and digital peripherals including LCD driver, reduce system cost and speed time-to-market
• Integrated analog comparator is ideal for precise mixed-signal measurement
• On-board SVS combats brownout and lock-up conditions
• In-system programmable Flash permits last-minute code changes,field upgrades and data logging to Flash
• The MSP-FET430P410 offers a completely integrated development environment for only U.S. $99
• Packaging: 64-pin QFP
Applications
• Communications, Smart Card and human interface applications
• Basic encryption
• Thermal monitoring
• Small form factor integrated LCD driver for information displays
MSP430F412/F413方框图
Enhance your video output and decrease board space with these new 3-V video amplifiers. This family of video amplifiers provides high levels of feature/integration in the tiny SC-70 package. With integrated shutdown,6-dB gain, a 2-pole, low-pass filter and SAG correction, designers of video-enabled, low-power equipment can save both cost and board space while increasing video performance. SAG correction allows the reduction in output coupling cap size from one big 470-μF cap to two smaller caps, resulting in dramatic size and cost savings. 50-mV level shifter allows for DC-coupling of output without clipping, providing the best video performance in a 5 mm2 total solution size.
Key Features
• Excellent video performance:
• 0.5-db gain flatness: 35 MHz
• Diff gain: 0.02%, Diff phase: 0.05°
• Unity gain bandwidth: 75 MHz
• High slew rate: 100 V/s
• Input range includes ground
• Rail-to-rail output
• Low power: 6 mA enabled, 2.5 A shutdown
• Single-supply operating range: 2.7 V to 3.3 V
• Packaging: Microsize package SC-70
Applications
• Digital still cameras
• Video-enabled mobile phones
• Portable media players
• Set-top-box video filters
• Digital TVs
OPA360方框图
The TLV320AIC32/TLV320AIC31 are highly integrated, low-power stereo CODECs for use in a variety of portable audio equipment. The TLV320AIC32 includes six single-ended analog inputs. The TLV320AIC31 includes two single-ended analog inputs and two differential analog inputs. Both CODECs have six output drivers. They also include two line output drivers and four high-power amplifiers that can be configured as stereo headphone drivers or stereo speaker drivers.
Key Features
• Stereo DAC (100 dBA) and ADC (92 dBA) support rates up to 96 kSPS
• 14-mW power dissipation with stereo playback at 48 kSPS
• Stereo headphone drivers and 500-mW, 8-speaker driver
• Stereo microphone preamps and hardware automatic gain control
• Integrated PLL for flexible audio clock generation
• Programmable digital audio bass/treble/EQ with 3D effects
• Analog inputs are configurable as single-ended (AIC32/AIC31) or fully differential (AIC31 only)
• Up to six analog inputs, six output drivers for easy connectivity to multiple devices in a cellular telephony system
• Packaging: 5 5 mm 32-pin QFN
Applications
• Cellular and smart phones
• Digital still cameras, digital video cameras
• MP3 and portable media players
• PDAs
• Talking toys and toys with audio
TLV320AIC32方框图
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