鏅傞枔锛�2025/5/6 18:10:16
闁辫畝锛�23
PCM2912A 鏄竴娆剧敱 Texas Instruments 鎺ㄥ嚭鐨勯珮鎬ц兘绔嬮珨鑱查煶闋荤法瑙ｇ⒓鍣� (Codec)锛岄泦鎴愪簡妯℃暩(sh霉)杞�(zhu菐n)鎻涘櫒 (ADC) 鍜屾暩(sh霉)妯¤綁(zhu菐n)鎻涘櫒 (DAC)锛屽苟鏀寔澶氱ó闊抽牷鎺ュ彛妯″紡銆傚畠閬╃敤浜庨渶瑕侀珮璩�(zh矛)閲忛煶闋昏檿鐞嗙殑娑堣不椤為浕瀛愯ō鍌�锛屼緥濡備究鏀滃紡闊抽牷鎾斁鍣ㄣ�乁SB 闊抽牷閬╅厤鍣ㄤ互鍙婇寗闊宠ō鍌欑瓑銆�
銆�銆�PCM2912A 鐨勮ō瑷堟敞閲嶄綆鍔熻�楀拰楂橀煶璩�(zh矛)锛岄仼鍚堝湪 USB 闊抽牷鎳夌敤涓綔鐐烘牳蹇冮煶闋昏檿鐞嗚姱鐗�銆傞�氶亷闈堟椿鐨勯厤缃伕闋咃紝瑭茶姱鐗囪兘澶犳豢瓒充笉鍚屽牬鏅笅鐨勯煶闋婚渶姹�銆�
宸ヤ綔闆诲锛�3.3V 卤5%
銆�銆�淇″櫔姣� (SNR)锛�100dB锛堝吀鍨嬪�硷級
銆�銆�绺借娉㈠け鐪熷姞鍣伈 (THD+N)锛�-90dB锛堝吀鍨嬪�硷級
銆�銆�閲囨ǎ鐜囪寖鍦嶏細8kHz 鑷� 96kHz
銆�銆�鏁�(sh霉)鎿�(j霉)鎺ュ彛锛欼2S銆佸乏灏嶉綂銆佸彸灏嶉綂銆乀DM
銆�銆�渚涢浕闆绘祦锛氬皬浜� 40mA锛堝吀鍨嬪�硷級
銆�銆�灏佽褰㈠紡锛歋SOP-28
PCM2912A 鎻愪緵浜嗗崜瓒婄殑闊抽牷鎬ц兘锛屽苟涓斿収(n猫i)缃簡澶氱ó瀵︾敤鍔熻兘浠ョ啊鍖栫郴绲�(t菕ng)瑷▓銆傚叾涓昏鐗规�у寘鎷細
銆�銆�1. 楂樻�ц兘 ADC 鍜� DAC 妯″锛岀⒑淇濆嚭鑹茬殑闊宠唱(zh矛)銆�
銆�銆�2. 鏀寔澶氱ó闊抽牷鎺ュ彛鍗�(xi茅)璀�锛屾柟渚胯垏涓嶅悓椤炲瀷鐨勮檿鐞嗗櫒鎴栨帶鍒跺櫒閫ｆ帴銆�
銆�銆�3. 鍏�(n猫i)缃噰妯ｇ巼杞�(zhu菐n)鎻涘櫒 (SRC)锛屽彲瀵︾従(xi脿n)闈堟椿鐨勬檪閻橀厤缃��
銆�銆�4. 鍙法绋嬪鐩婃斁澶у櫒 (PGA)锛岀敤浜庡劒(y艒u)鍖栬几鍏ヤ俊铏熼浕骞�銆�
銆�銆�5. 闈堟椿鐨勯浕婧愮鐞嗘ā寮忥紝鏈夊姪浜庨檷浣庡姛鑰�銆�
銆�銆�6. 鍏煎 USB 闊抽牷 Class 1.0 妯欐簴锛屼究浜庡嵆鎻掑嵆鐢ㄦ搷浣�銆�
銆�銆�7. 鎻愪緵澶氱ó涓柗鍜岀媭鎱�(t脿i)鎸囩ず鍔熻兘锛屽寮风郴绲�(t菕ng)鐨勫彲鎺ф��銆�
PCM2912A 寤ｆ硾鎳夌敤浜庡悇绋渶瑕侀珮鍝佽唱(zh矛)闊抽牷铏曠悊鐨勫牬鏅紝涓昏鍖呮嫭锛�
銆�銆�1. USB 闊抽牷閬╅厤鍣ㄥ拰澶栫疆鑱插崱銆�
銆�銆�2. 渚挎敎寮忛煶妯傛挱鏀惧櫒鍜岄寗闊宠ō鍌欍��
銆�銆�3. 瀹跺涵褰遍櫌绯荤当(t菕ng)鍜屽濯掗珨涓績銆�
銆�銆�4. 绛嗚鏈浕鑵﹀拰鑷哄紡姗熺殑澶栭儴闊抽牷鎿村睍銆�
銆�銆�5. 宸ユキ(y猫)绱氳獮闊宠閷勫拰鍥炴斁瑷倷銆�
銆�銆�鐢变簬鍏堕珮闆嗘垚搴﹀拰闈堟椿鎬�锛孭CM2912A 鎴愮偤鐪惧闊抽牷鐢�(ch菐n)鍝侀枊鐧�(f膩)鐨勭悊鎯抽伕鎿囥��
PCM2902A, PCM2910A
