MAX2160 ISDB-T应用参考设计
abstract: this reference design for the max2160 tuner plus demodulator ic demonstrates a compact daughter-board solution for the isdb-t standard (single-segment). this design converts uhf band signals (470mhz to 770mhz) to a mpeg-2 transport stream. the solution is intended for portable applications, such as cell-phone tvs and pdas.
figure 1. the reference design for the max2160 tuner plus demodulator.
figure 2. system block diagram.
lab measurements
figure 3. sensitivity measures better than -97dbm. the tradeoff in sensitivity is also shown when an optional wcdma or cdma2000® rejection filter is added at the rf input.
figure 4. a wcdma blocker rejection filter response. to implement on-board coexistence of isdb-t with a wcdma system, additional input filtering is required to reject the cellular transmit-band frequencies. the optional reference-design filtering is a combination of two filters, which provide approximately 47db of attenuation at the cellular transmit band (marker 4).
figure 5. cdma-2000 blocker rejection filter response. to implement on-board coexistence of isdb-t with a cdma2000 system in a handheld application, additional input filtering is required to reject the cellular transmit-band frequencies. the optional reference-design filter provides approximately 42db of attenuation at cdma2000 transmit frequencies (marker 4).
additional measurements
parameter conditions target measured units
maximum input uhf: ch. 13, ch. 33, ch. 52 0 8.9, 8.2, 7.3 dbm
adjacent channel selectivity
(desired: -70dbm) uhf: ch. 13, ch. 33, ch. 52 35 45, 47, 45 dbc
wcdma blocker performance uhf: ch. 13, ch. 33, ch. 52 24 23.5, 24, 24 dbm
cdma2000 blocker performance uhf: ch. 13, ch. 33, ch. 52 10 21, 21, 21 dbm
isdb-t frequency plan
figure 6. the isdb-t rf signal is broadcast in the uhf band, as shown above. the channel spacing is 6mhz.
detailed description
the max2160/max2160egb tuner ics are designed for use in japanese mobile digital-tv (isdb-t single-segment) applications. the devices directly convert uhf band signals to a low-if by using a broadband i/q downconverter. the operating frequency range extends from 470mhz to 770mhz.
the max2160/max2160ebg support both i/q low-if interfaces and single low-if interfaces. the devices are thus universal tuners for various digital demodulator implementations.
the max2160/max2160ebg integrate lna, rf and low-if variable-gain amplifiers (vgas), i and q downconverting mixers, and bandpass filters providing in excess of 42db of image rejection. the parts operate with either high-side or low-side local oscillator (lo) injection. the devices' vgas provide in excess of 100db of gain-control range.
the max2160/max2160ebg also have fully monolithic vcos and tank circuits, and a complete frequency synthesizer. a xtal oscillator and separate tcxo input buffer are also included. the devices operate with xtal/tcxo oscillators from 13mhz to 26mhz, which enable the shared use of a vc-tcxo in cellular handset applications. additionally, a divider is provided for the xtal/tcxo oscillator, thus allowing for a simple and low-cost interface to various channel decoders. cdma2000 is a registered trademark of telecommunications industry association.
等离子电浆抛光设备主要特点介绍
淘宝与华为合作将基于HarmonyOS NEXT启动鸿蒙原生应用开发
为拉回高通大客户，三星将对旗下5nm工艺进行升级
德州仪器推出具有MUX的零漂移可编程增益放大器，面向微处理器
臭氧气体检测仪都分为哪些类型？
MAX2160 ISDB-T应用参考设计
需要了解udev文件系统的使用和基本工作原理
IR推出iP1837和iP1827灵活型单输入电压DC-DC稳压器
at89s52管脚图引脚图
晶澳科技依托中国电信5G定制网打造智慧工厂新标杆
区块链技术的发展亟需一个怎样的制高点
红外接近感测：搭建模块，机械考量以及设计折中
西北工业大学航空学院研发出了两款消防灭火救援无人机
华灿光电获补贴资金1亿元
电容的工艺结构以及应用选型
基于GPS/MEMS组合芯片实现高精度定位解决方案
脑洞大开！联想投影电脑610S拆解
华为宣布2月26日开发布会 华为P10或将正式发布！
Wi-Fi 7贡献排名
热阻网络模型-DELPHI模型
figure 1. the reference design for the max2160 tuner plus demodulator.
figure 2. system block diagram.
lab measurements
figure 3. sensitivity measures better than -97dbm. the tradeoff in sensitivity is also shown when an optional wcdma or cdma2000® rejection filter is added at the rf input.
figure 4. a wcdma blocker rejection filter response. to implement on-board coexistence of isdb-t with a wcdma system, additional input filtering is required to reject the cellular transmit-band frequencies. the optional reference-design filtering is a combination of two filters, which provide approximately 47db of attenuation at the cellular transmit band (marker 4).
figure 5. cdma-2000 blocker rejection filter response. to implement on-board coexistence of isdb-t with a cdma2000 system in a handheld application, additional input filtering is required to reject the cellular transmit-band frequencies. the optional reference-design filter provides approximately 42db of attenuation at cdma2000 transmit frequencies (marker 4).
additional measurements
parameter conditions target measured units
maximum input uhf: ch. 13, ch. 33, ch. 52 0 8.9, 8.2, 7.3 dbm
adjacent channel selectivity
(desired: -70dbm) uhf: ch. 13, ch. 33, ch. 52 35 45, 47, 45 dbc
wcdma blocker performance uhf: ch. 13, ch. 33, ch. 52 24 23.5, 24, 24 dbm
cdma2000 blocker performance uhf: ch. 13, ch. 33, ch. 52 10 21, 21, 21 dbm
isdb-t frequency plan
figure 6. the isdb-t rf signal is broadcast in the uhf band, as shown above. the channel spacing is 6mhz.
detailed description
the max2160/max2160egb tuner ics are designed for use in japanese mobile digital-tv (isdb-t single-segment) applications. the devices directly convert uhf band signals to a low-if by using a broadband i/q downconverter. the operating frequency range extends from 470mhz to 770mhz.
the max2160/max2160ebg support both i/q low-if interfaces and single low-if interfaces. the devices are thus universal tuners for various digital demodulator implementations.
the max2160/max2160ebg integrate lna, rf and low-if variable-gain amplifiers (vgas), i and q downconverting mixers, and bandpass filters providing in excess of 42db of image rejection. the parts operate with either high-side or low-side local oscillator (lo) injection. the devices' vgas provide in excess of 100db of gain-control range.
the max2160/max2160ebg also have fully monolithic vcos and tank circuits, and a complete frequency synthesizer. a xtal oscillator and separate tcxo input buffer are also included. the devices operate with xtal/tcxo oscillators from 13mhz to 26mhz, which enable the shared use of a vc-tcxo in cellular handset applications. additionally, a divider is provided for the xtal/tcxo oscillator, thus allowing for a simple and low-cost interface to various channel decoders. cdma2000 is a registered trademark of telecommunications industry association.
等离子电浆抛光设备主要特点介绍
淘宝与华为合作将基于HarmonyOS NEXT启动鸿蒙原生应用开发
为拉回高通大客户，三星将对旗下5nm工艺进行升级
德州仪器推出具有MUX的零漂移可编程增益放大器，面向微处理器
臭氧气体检测仪都分为哪些类型？
MAX2160 ISDB-T应用参考设计
需要了解udev文件系统的使用和基本工作原理
IR推出iP1837和iP1827灵活型单输入电压DC-DC稳压器
at89s52管脚图引脚图
晶澳科技依托中国电信5G定制网打造智慧工厂新标杆
区块链技术的发展亟需一个怎样的制高点
红外接近感测：搭建模块，机械考量以及设计折中
西北工业大学航空学院研发出了两款消防灭火救援无人机
华灿光电获补贴资金1亿元
电容的工艺结构以及应用选型
基于GPS/MEMS组合芯片实现高精度定位解决方案
脑洞大开！联想投影电脑610S拆解
华为宣布2月26日开发布会 华为P10或将正式发布！
Wi-Fi 7贡献排名
热阻网络模型-DELPHI模型