Ngwa elektrọnik dị iche iche nke Semicon Original kacha mma STC AVR 8254 Microcontroller MCU IC TL2844BDR-8 SOP
Usoro TL284xB na TL384xB dakọtara na ọkọlọtọ TL284x na TL384x yana nkwalite ndị a.A kọwapụtara mmalite mmalite ugbu a ka ọ bụrụ 0.5mA (max), ebe a na-ebelata mwepu oscillator ka ọ bụrụ 8.3 mA (ụdị).Tụkwasị na nke ahụ, n'oge ọnọdụ mkpọchi n'okpuru voltaji, mmepụta nwere oke saturation voltaji nke 1.2 V ka ị na-emikpu 10 mA (VCC = 5 V).Nnukwu ọdịiche dị n'etiti ndị otu usoro a bụ ọnụ ụzọ UVLO na oke okirikiri ọrụ.Ọnụ ụzọ UVLO ahụkarị nke 16 V (na) na 10 V (gbanyụọ) na ngwaọrụ TLx842B na TLx844B na-eme ka ha dabara nke ọma na ngwa ndị na-anọghị n'ịntanetị.Ọnụ ụzọ ndị dabara adaba maka ngwaọrụ TLx843B na TLx845B bụ 8.4 V (na) na 7.6 V (gbanyụọ).Ngwa TLx842B na TLx843B nwere ike ịrụ ọrụ na okirikiri ọrụ na-eru nso 100%.A ọrụ-okirikiri nso nke 0% ka 50% na-enwetara site TLx844B na TLx845B site na mgbakwunye na nke esịtidem toggle flip-flop, nke blanks mmepụta anya ọ bụla ọzọ elekere okirikiri.The TL284xB-usoro ngwaọrụ e ji arụ ọrụ si - 40°C ruo 85°C.The TL384xB-usoro ngwaọrụ e ji arụ ọrụ site na 0°C ruo 70°C.
Njirimara ngwaahịa
| Ụdị | Nkọwa |
| Otu | Sekit jikọtara ọnụ (ICs) Interface - CODEC |
| Mfr | Ngwa Texas |
| Usoro | - |
| ngwugwu | teepu & Reel (TR) Mpempe akwụkwọ (CT) Digi-Reel® |
| SPQ | 250T&R |
| Ọnọdụ ngwaahịa | Na-arụ ọrụ |
| Ụdị | Audio stereo |
| Data Interface | PCM Audio Interface |
| Mkpebi (Bits) | 24 b |
| Ọnụọgụ nke ADC/DAC | 2/2 |
| Sigma Delta | Ee |
| Oke S/N, ADCs/DAC (db) Ụdị | 92/102 |
| Oke dị ike, ADCs/DAC (db) Ụdị | 93/97 |
| Voltaji - ọkọnọ, Analog | 2.7V ~ 3.6V |
| Voltaji - Ntinye, dijitalụ | 1.65V ~ 1.95V |
| Okpomọkụ na-arụ ọrụ | -40°C ~ 85°C |
| Ụdị nkwụnye | Ugwu elu |
| Ngwungwu / Akpa | Mpempe akwụkwọ ekpughere 32-VFQFN |
| Ngwungwu ngwaọrụ ndị na-eweta ihe | 32-VQFN (5x5) |
| Nọmba ngwaahịa ntọala | TLV320 |
Onye njikwa PWM
Modulation Width Pulse (PWM) na-ezo aka n'iji mmepụta dijitalụ nke microprocessor na-ejikwa sekit analọgụ na bụ usoro nke iji nọmba ọnụọgụ nọmba nke akara ngosi analog.Ịchịkwa sekit analọg n'ụzọ dijitalụ nwere ike ibelata ọnụ ahịa na oriri ike nke sistemụ.Ọtụtụ microcontrollers nwere PWM njikwa n'ime ha.
Ụkpụrụ
Nkọwa dị nkenke nke ụkpụrụ nke onye njikwa PWM
Ụkpụrụ bụ isi nke njikwa PWM dabere n'eziokwu ahụ bụ na ụda dị warara nke oke mkpali nha na ụdị dị iche iche nwere otu mmetụta ahụ mgbe agbakwunyere na njikọ na inertia.Enwere ụzọ dị iche iche iji chịkwaa obosara pulse, dị ka unipolar na bipolar, synchronous na asynchronous, rectangular ife modulation, na sine ife modulation.Usoro nchịkwa PWM nke unipolar pụtara na a na-agbanwe ebili mmiri na-ebu naanị n'otu ntụziaka na ọkara okirikiri, na PWM waveform na-agbanwekwa naanị n'otu ntụziaka, ebe usoro nchịkwa PWM bipolar na-agbanwe ụgbọ mmiri na-ebufe n'akụkụ abụọ na ọkara okirikiri. , na PWM ebili mmiri na-agbanwekwa na ụzọ abụọ.Dabere na mgbama ụgbọelu emekọrịtara na mgbama modulating, enwere ike kewaa njikwa PWM ka ọ bụrụ modulation synchronous na asynchronous modulation.Akụkụ anọ waveform usu obosara modulation e ji mmepụta usu obosara kọlụm ịbụ hà obosara, na ike na-achịkwa a ụfọdụ ọnụ ọgụgụ nke harmonics;Sine waveform pulse obosara modulation na-eji kọlụm obosara nke mmepụta ihe, ọ bụghị nha nha nha, obosara na-agbanwe dị ka iwu sine si dị, mmepụta waveform dị nso na sine waveform.Sine wave pulse obosara modulation ka a na-akpọkwa SPWM.ịmepụta obosara usu dị ka akara akara bụ isi ihe na usoro a.Usoro ntụnyere ebili mmiri triangular, usoro ntụnyere loop hysteresis na usoro vector oghere ka a na-ejikarị.
Ndị na-ahụ maka PWM
Ndị na-ahụ maka PWM bụ ndị nrụpụta ama ama.
Ndị a ma ama bụ Texas Instruments, Motorola, Feifei Semiconductor, Unitrode, Micro Linear, Silicon General Semiconductor, Siemens, STMicroelectronics, na Royal Philips Semiconductor na Netherlands, wdg.
Banyere ngwaahịa
Usoro sekit agbakwunyere njikwa TL284xB na TL384xB na-enye atụmatụ ndị dị mkpa iji mejuputa atumatu njikwa n'ịntanetị ma ọ bụ dc-to-dc, yana ọnụ ọgụgụ kacha nta nke ihe mpụga.Sekit etinyere n'ime ime gụnyere mgbachi dị n'okpuru voltaji (UVLO) yana nrụtụ aka ziri ezi nke edoziri maka izi ezi na ntinye amplifier njehie.Sekit ndị ọzọ dị n'ime gụnyere mgbagha iji hụ na arụrụ arụrụ arụ, ihe nrụmọrụ pulse-width modulation (PWM) nke na-enyekwa njikwa oke dị ugbu a, yana ọkwa nrụpụta totem-pole emebere iji wepụta ma ọ bụ mebie ihe dị elu ugbu a.Usoro mmepụta, dabara adaba maka ịnya ụgbọ ala N-channel MOSFET, dị ala mgbe ọ nọ na mpụga steeti.
Usoro TL284xB na TL384xB dakọtara na ọkọlọtọ TL284x na TL384x yana nkwalite ndị a.A kọwapụtara mmalite mmalite ugbu a ka ọ bụrụ 0.5mA (max), ebe a na-ebelata mwepu oscillator ka ọ bụrụ 8.3 mA (ụdị).Tụkwasị na nke ahụ, n'oge ọnọdụ mkpọchi n'okpuru voltaji, mmepụta nwere oke saturation voltaji nke 1.2 V ka ị na-emikpu 10 mA (VCC = 5 V).
Nnukwu ọdịiche dị n'etiti ndị otu usoro a bụ ọnụ ụzọ UVLO na oke okirikiri ọrụ.Ọnụ ụzọ UVLO ahụkarị nke 16 V (na) na 10 V (gbanyụọ) na ngwaọrụ TLx842B na TLx844B na-eme ka ha dabara nke ọma na ngwa ndị na-anọghị n'ịntanetị.Ọnụ ụzọ ndị dabara adaba maka ngwaọrụ TLx843B na TLx845B bụ 8.4 V (na) na 7.6 V (gbanyụọ).Ngwa TLx842B na TLx843B nwere ike ịrụ ọrụ na okirikiri ọrụ na-eru nso 100%.A ọrụ okirikiri nso nke 0% ka 50% na-enwetara site TLx844B na TLx845B site na mgbakwunye na nke esịtidem toggle flip-flop, nke blanks mmepụta anya ọ bụla ọzọ elekere cycle.The TL284xB-usoro ngwaọrụ e ji arụ ọrụ si - 40°C ruo 85°C.The TL384xB-usoro ngwaọrụ e ji arụ ọrụ site na 0°C ruo 70°C.
