TI公司的THS7319是集成了濾波器的非常低功耗的單電源(2.6V-5V)三路視頻放大器.THS7319集成了三路增強(qiáng)分辨率(ED)的濾波器,具有三階Butterworth特性.可用作DAC重建濾波器或ADC抗混淆濾波器.THS7319在3.3V時(shí)的總靜態(tài)電流僅為3.4mA,非常適合以電池為能源的應(yīng)用,如PMP,數(shù)碼相機(jī),手機(jī)視頻輸出緩沖和USB/手提低功耗視頻緩沖.本文介紹了THS7319主要特性,方框圖,標(biāo)準(zhǔn)測試電路以及多種應(yīng)用電路,包括單電源DC耦合輸入/DC耦合輸出視頻線路驅(qū)動
TI公司的THS7319是集成了
濾波器的非常低功耗的單
電源(2.6V-5V)三路視頻放大器.THS7319集成了三路增強(qiáng)分辨率(ED)的濾波器,具有三階Butterworth特性.可用作
DAC重建濾波器或
ADC抗混淆濾波器.THS7319在3.3V時(shí)的總靜態(tài)
電流僅為3.4mA,非常適合以
電池為能源的應(yīng)用,如
PMP,數(shù)碼相機(jī),
手機(jī)視頻輸出緩沖和USB/手提低功耗視頻緩沖.本文介紹了THS7319主要特性,方框圖, 標(biāo)準(zhǔn)測試電路以及
多種應(yīng)用電路,包括單電源DC耦合輸入/DC耦合輸出視頻線路驅(qū)動器,DC耦合編碼器/DAC和DC耦合線路驅(qū)動器的THS7319系統(tǒng), 驅(qū)動AC耦合視頻線路的DC輸入系統(tǒng).此外還介紹了THS7319 EVM評估板電路圖和評估板材料清單.
Fabricated using the revolutionary, complementary Silicon-Germanium (SiGe) BiCom3X process, the THS7319 is a very low-
power, 2.6-V to 5-V single-supply, three-channel, integrated filter video buffer. This device is ideal for battery-powered applications where size and power are critical parameters. Total quiescent current is only 3.4 mA at 3.3 V and can be reduced to 0.15 µA while disabled.
The THS7319 incorporates three enhanced definition (ED) filter channels with third-order Butterworth characteristics. These filters are useful
asdigital-to-analog converter (DAC) reconstruction filters or as analog-to-digital converter (ADC) anti-aliasing filters supporting 480p/576p YP
BP
Rand RGB video. The THS7319 is also ideal for oversampled systems that produce standard-definition (SD) signals including CVBS, S-Video, 480i/576i YP
BP
R, YUV, and RGB.
The THS7319 is designed for dc-coupled inputs. To mitigate any DAC/encoder termination interaction, the input impedance is a very high 2.4 M. The 150-mV output level shift allows for a full sync dynamic range at the output with a 0-V input that prevents sync crushing. The rail-to-rail output stage supports both ac and dc line driving.
The THS7319 is offered in a RoHS-compliant ultra-small 9-ball MicrostarCSP package that measures 1.5-mm × 1.5-mm × 0.35-mm.
THS7319主要特性:
Very Low Total Quiescent Current: 3.4 mA at 3.3 V
0.15-µA Total Disabled Supply Current
Third-Order Butterworth Low-Pass Filters:
-1
dBat 17 MHz
-3 dB at 20 MHz
21-dB Attenuation at 43 MHz
Supports 480p/576p YP
BP
Ror RGB Video
