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图片源于供应商或网络,实物可能存在差异,请以实物为准

LM4550VH

数量

单价

总价

58+

¥ 43.053825

¥ 2497.12185

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购买数量

总价金额：￥ 2497.12185

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样品申购

详细描述：音频，AC '97 接口 18 b 串行 48-TQFP（7x7）

产品参数

产品属性	属性值
ADC、DAC 数	2 、 2
三角积分	是
供应商器件封装	48-TQFP（7x7）
信噪比，ADC、DAC (db)（典型值）	-
分辨率（位）	18 b
制造商	National Semiconductor
动态范围，ADC、DAC (db) 典型值	90 、 89
包装	散装
安装类型	表面贴装型
封装、外壳	48-LQFP
工作温度	-40°C ~ 85°C
数据接口	串行
电压 - 供电，数字	3V ~ 5.5V
电压 - 供电，模拟	4.2V ~ 5.5V
类型	音频，AC '97
系列	-
零件状态	在售

PDF描述：AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound AC '97版本2.1多声道音频编解码器与立体声耳机放大器，采样率转换和国家3D音效

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CONNECT:[ UseTime:0.000934s ] mysql:host=127.0.0.1;port=3306;dbname=ic72com;charset=utf8
SHOW FULL COLUMNS FROM `visit_log` [ RunTime:0.003377s ]
INSERT INTO `visit_log` SET `ip` = '216.73.216.133' , `useragent` = 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)' , `reffer` = '' , `host` = 'https://www.ic118.com/stock/detail_63836301.html' [ RunTime:0.002766s ]
SHOW FULL COLUMNS FROM `product_type` [ RunTime:0.002095s ]
SELECT `id`,`typeid`,`name`,`typestr` FROM `product_type` WHERE `id` NOT IN (11,12,13,14,15) AND `id` <= 750 [ RunTime:0.002594s ]
SHOW FULL COLUMNS FROM `o_cart` [ RunTime:0.001562s ]
SELECT COUNT(*) AS think_count FROM `o_cart` WHERE ( `userId` = 0 AND `visitIP` = '216.73.216.133' ) [ RunTime:0.004816s ]
SHOW FULL COLUMNS FROM `ad` [ RunTime:0.003599s ]
SELECT * FROM `ad` WHERE `isDisplay` = 1 [ RunTime:0.000554s ]
SHOW FULL COLUMNS FROM `stock` [ RunTime:0.001687s ]
SELECT `s`.*,`u`.`company`,`t`.`name` FROM `stock` `s` LEFT JOIN `user` `u` ON `u`.`id`=`s`.`userid` LEFT JOIN `product_type` `t` ON `t`.`id`=`s`.`categoryid` WHERE `s`.`id` = '63836301' LIMIT 1 [ RunTime:0.001118s ]
SHOW FULL COLUMNS FROM `stock_pra` [ RunTime:0.001323s ]
SELECT * FROM `stock_pra` WHERE `stockid` = 63836301 [ RunTime:0.000468s ]
SHOW FULL COLUMNS FROM `stock_price` [ RunTime:0.001133s ]
SELECT * FROM `stock_price` WHERE `stockid` = 63836301 ORDER BY `minOrder` ASC [ RunTime:0.002303s ]
SHOW FULL COLUMNS FROM `stock_unitquantity` [ RunTime:0.003615s ]
SELECT * FROM `stock_unitquantity` WHERE `stockid` = 63836301 ORDER BY `unit` DESC [ RunTime:0.000581s ]
SHOW FULL COLUMNS FROM `stock_warehousequantity` [ RunTime:0.001307s ]
SELECT * FROM `stock_warehousequantity` WHERE `stockid` = 63836301 [ RunTime:0.002025s ]
SELECT `name` FROM `product_type` WHERE `id` = 0 LIMIT 1 [ RunTime:0.002962s ]
SELECT * FROM `stock_price` WHERE `stockid` = 63836301 ORDER BY `minOrder` ASC [ RunTime:0.000234s ]
CONNECT:[ UseTime:0.000533s ] mysql:host=127.0.0.1;port=3306;dbname=ic72com_pdf;charset=utf8
select * from pdf where partno='LM4550VH' and brandshort='National Semiconductor' limit 1 [ RunTime:0.003470s ]
SHOW FULL COLUMNS FROM `stock_product_overview` [ RunTime:0.002221s ]
SELECT `memo` FROM `stock_product_overview` WHERE `icName` = 'LM4550VH' LIMIT 1 [ RunTime:0.000663s ]
SHOW FULL COLUMNS FROM `pdf` [ RunTime:0.001699s ]
SELECT `id`,`partno`,`note`,`note_cn` FROM `pdf` WHERE `partno` = 'LM4550VH' LIMIT 1 [ RunTime:0.000578s ]
SHOW FULL COLUMNS FROM `stock_pra_lib` [ RunTime:0.002305s ]
SELECT `pra` FROM `stock_pra_lib` WHERE ( ( `partno` = 'LM4550VH' OR `brand` LIKE 'National Semiconductor%' ) ) LIMIT 1 [ RunTime:0.025920s ]
SELECT `id` FROM `stock` WHERE `id` <> 63836301 AND `partno` = 'LM4550VH' AND `lockUser` = 0 AND ( LOWER(brand) LIKE '%national semiconductor%' ) [ RunTime:0.006613s ]
SELECT * FROM `stock_pra` WHERE `stockid` = 16078058 [ RunTime:0.006435s ]
SELECT `note` FROM `stock` WHERE `id` = 16078058 LIMIT 1 [ RunTime:0.005309s ]
SELECT `description` FROM `stock` WHERE `id` = 16078058 LIMIT 1 [ RunTime:0.008787s ]
SHOW FULL COLUMNS FROM `icreplace` [ RunTime:0.002869s ]
SELECT `r`.*,`b`.`brandshort`,`b`.`brandcn` FROM `icreplace` `r` LEFT JOIN `stock_brand` `b` ON `b`.`id`=`r`.`icbrandid` WHERE `r`.`partno` = 'LM4550VH' ORDER BY `r`.`id` DESC LIMIT 5 [ RunTime:0.007698s ]
SELECT `id`,`code`,`imgurl`,`minOrderPrice`,`partno`,`brand`,`package` FROM `stock` WHERE `categoryid` = 0 AND ( `partno` > 'LM4550VH' ) ORDER BY `partno` ASC LIMIT 8 [ RunTime:0.010720s ]
SELECT `id`,`code`,`imgurl`,`minOrderPrice`,`partno`,`brand`,`package` FROM `stock` WHERE `status` = 3 ORDER BY `partno` ASC LIMIT 8 [ RunTime:0.006806s ]

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