- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16786 > MAX9738EVKIT+ (Maxim Integrated Products)KIT EVALUATION FOR MAX9738 PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX9738EVKIT+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 13/14頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | KIT EVALUATION FOR MAX9738 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類型： | G 類 |
| 輸出類型： | 1-通道（單聲道） |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -45°C ~ 85°C |
| 板類型： | 完全填充 |
| 已用 IC / 零件： | MAX9738 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | MAX9738EWP+TG45-ND - IC AMP AUDIO PWR MONO G 20WLP |
第1頁(yè)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)當(dāng)前第13頁(yè)第14頁(yè)
MAX9738
16VP-P Class G Amplifier with
Inverting Boost Converter
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
A1, A2
VBAT
Battery Connection. Bypass to GND with a 10μF ceramic capacitor.
A3
SHDN
Active-Low Shutdown. Connect to VDD for normal operation.
A4
FB-
Negative Polarity Amplifier Feedback
A5
IN-
Negative Polarity Amplifier Input
B1, B2
LX
Inverting-Boost Inductor Connection. Connect a 1.5μH to 2.2μH inductor between LX and GND.
B4
FB+
Positive Polarity Amplifier Feedback
B5
IN+
Positive Polarity Amplifier Input
C1
BST
Boost Flying Capacitor Connection. Connect a 0.1μF capacitor between BST and LX.
C2, C4
VSS
Class G Amplifier Negative Power-Supply Input. Connect to inverting boost converter output
node. Bypass VBAT with a 10μF ceramic capacitor.
C5
ISET
Boost Current Set. Connect a 100k
Ω resistor from ISET to GND.
D1, D5
VDD
Power-Supply Input. Connect to VBAT.
D2
OUT-
Negative Polarity Amplifier Output
D3
GND
Ground
D4
OUT+
Positive Polarity Amplifier Output
Detailed Description
The MAX9738 Class G power amplifier with inverting
boost converter is the latest in linear amplifier technolo-
gy. The Class G output stage offers improved perfor-
mance over a Class AB amplifier while increasing
efficiency to extend battery life. The integrated inverting
boost converter generates a negative supply capable
of delivering up to 400mA. The negative supply is only
used when the output signal requires a larger supply
voltage differential. As the battery voltage drops, the
boost converter output becomes more negative to
maintain amplifier output swing all the way down to
VBAT = 2.7V.
The Class G output stage and the inverting boost con-
verter allow the MAX9738 to deliver a 16VP-P voltage
swing, up to four times greater than a Class AB amplifier.
Class G Operation
The MAX9738 Class G amplifier is a linear amplifier that
operates within a low (VDD to GND) and high (VDD to
VSS) supply range. Figure 1 illustrates the transition
from the low to high supply range. For small signals,
the device operates within the lower (VDD to GND) sup-
ply range. In this range, the operation of the device is
identical to a traditional single-supply Class AB amplifi-
er where:
ILOAD = IN1
As the output signal increases so a wider supply is
needed, the device begins its transition to the higher
supply range (VDD to VSS) for the large signals. To
ensure a seamless transition between the low and high
supply ranges, both of the lower transistors are on so
that:
ILOAD = IN1+IN2
As the output signal continues to increase, the transi-
tion to the high supply is complete. The device then
operates from the higher supply range, where the oper-
ation of the device is identical to a traditional dual-sup-
ply Class AB amplifier where:
ILOAD = IN2
During operation, the output common-mode voltage of
the MAX9738 adjusts dynamically as the device transi-
tions between supply ranges.
Utilizing a Class G output stage with an inverting boost
converter allows the MAX9738 to realize a 17.5VP-P
output swing with a 5V supply. A traditional Class AB
amplifier would need to be powered with a ±5V supply
to generate the same output swing at half the efficiency
of the Class G.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 1641-181K | COIL .18UH MOLDED SHIELDED |
| MC1403BD | IC VREF SERIES PREC 2.5V 8-SOICN |
| EEC26DRYN-S734 | CONN EDGECARD 52POS DIP .100 SLD |
| GCC18DRYI | CONN EDGECARD 36POS DIP .100 SLD |
| V300B12E150BG3 | CONVERTER MOD DC/DC 12V 150W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9738EVKIT+ | 功能描述:放大器 IC 開發(fā)工具 MAX9738 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| MAX9738EWP+T | 制造商:Maxim Integrated Products 功能描述:16VP-P CLASS G AMPLIFIER WITH INVER - Tape and Reel |
| MAX9738EWP+TG45 | 功能描述:音頻放大器 16VP-P Class G Amplifier 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 |
| MAX973C/D | 功能描述:校驗(yàn)器 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX973CPA | 功能描述:校驗(yàn)器 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。