- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10339 > MAX4295EEE+T (Maxim Integrated Products)IC AMP AUDIO PWR 2W MONO 16QSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX4295EEE+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 2/15頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 2W MONO 16QSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | D 類 |
| 輸出類型： | 1-通道（單聲道） |
| 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： | 2W x 1 @ 4 歐姆 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 特點(diǎn)： | 消除爆音，短路保護(hù)和熱保護(hù)，關(guān)閉 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 16-QSOP |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 包裝： | 帶卷 (TR) |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)
Soft-Start (Clickless Startup)
The H-bridge is disabled under any of the following
conditions:
SHDN low
H-bridge current exceeds the 1A current limit
Thermal overload
Undervoltage lockout
The circuit re-enters normal operation if none of the
above conditions are present. A soft-start function pre-
vents an audible pop on restart. An external capacitor
connected to SS is charged by an internal 1.2A cur-
rent source and controls the soft-start rate. VSS is held
low while the H-bridge is disabled and allowed to ramp
up to begin a soft-start. Until VSS reaches 0.3 VCC,
the H-bridge output is limited to a 50% duty cycle,
independent of the input voltage. The H-bridge duty
cycle is then gradually allowed to track the input signal
at a rate determined by the ramp on SS. The soft-start
cycle is complete after VSS reaches 0.6 VCC. If the
soft-start capacitor is omitted, the device starts up in
approximately 100s.
Input Filter
High-fidelity audio applications require gain flatness
between 20Hz to 20kHz. Set the low-frequency cutoff
point with an AC-coupling capacitor in series with the
input resistor of the amplifier, creating a highpass filter
(Figure 3). Assuming the input node of the amplifier is a
virtual ground, the -3dB point of the highpass filter is
determined by: fLO = 1/(2
π RIN CIN), where RIN is
the input resistor, and CIN is the AC-coupling capaci-
tor. Choose RIN as described in the Gain Setting sec-
tion. Choose CIN such that the corner frequency is
below 20Hz.
Frequency Selection
The MAX4295 has an internal logic-programmable
oscillator controlled by FS1 and FS2 (Table 1). The
oscillator can be programmed to frequencies of
125kHz, 250kHz, 500kHz, and 1MHz. The frequency
should be chosen to best fit the application. As a rule of
thumb, choose fOSC to be 10 times the audio band-
width. A lower switching frequency offers higher ampli-
fier efficiency and lower THD but requires larger
external filter components. A higher switching frequen-
cy reduces the size and cost of the filter components at
the expense of THD and efficiency. In most applica-
tions, the optimal fOSC is 250kHz.
MAX4295
Mono, 2W, Switch-Mode (Class D)
Audio Power Amplifier
10
______________________________________________________________________________________
INPUT
CIN
RIN
RF
AOUT
IN
VCM
FS1
FS2
FREQUENCY (Hz)
11
1M
01
500k
10
250k
00
125k
Table 1. Frequency Select Logic
Figure 3. Input Amplifier Configuration
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27497E14A5P | CONN RCPT 5POS WALL MNT W/PINS |
| D38999/20JJ61PNLC | CONN HSG RCPT 61POS WALL MT PINS |
| LTC1197IMS8#TR | IC ADC 10BIT 500KHZ SHTDWN 8MSOP |
| LTC2305IMS#TRPBF | IC ADC 12-BIT 2CHN 12-MSOP |
| LTC2305IDE#TRPBF | IC ADC 12-BIT 2CHN 12-DFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4295ESE | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX4295ESE+ | 功能描述:音頻放大器 Mono 2W Switch Mode (Class D) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX4295ESE+T | 功能描述:音頻放大器 Mono 2W Switch Mode (Class D) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX4295ESE-T | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX4295EVKIT | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR THE MAX4295 - Bulk |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。