參數資料
| 型號： | NCP2890AFCT2 |
| 廠商： | ON Semiconductor |
| 文件頁數： | 4/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO POWER 1W 9-FLIPCHIP |
| 產品變化通告： | Product Obsolescence 06/Oct/2006 |
| 標準包裝： | 3,000 |
| 類型： | AB 類 |
| 輸出類型： | 1-通道（單聲道） |
| 在某負載時最大輸出功率 x 通道數量： | 1.08W x 1 @ 8 歐姆 |
| 電源電壓： | 2.2 V ~ 5.5 V |
| 特點： | 消除爆音，差分輸入，短路和熱保護，關閉 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 9-覆晶 |
| 封裝/外殼： | 9-WFBGA，FCBGA |
| 包裝： | 帶卷 (TR) |
NCP2890, NCV2890
http://onsemi.com
12
GainSetting Resistor Selection (Rin and Rf)
Rin and Rf set the closedloop gain of the amplifier.
In order to optimize device and system performance, the
NCP2890 should be used in low gain configurations.
The low gain configuration minimizes THD + noise
values and maximizes the signal to noise ratio, and the
amplifier can still be used without running into the
bandwidth limitations.
A closed loop gain in the range from 2 to 5 is
recommended to optimize overall system performance.
An input resistor (Rin) value of 22 k
W is realistic in most
of applications, and doesn’t require the use of a too large
capacitor Cin.
Input Capacitor Selection (Cin)
The input coupling capacitor blocks the DC voltage at
the amplifier input terminal. This capacitor creates a
highpass filter with Rin, the cutoff frequency is given by
fc
+
1
2*
P *Rin *Cin
.
The size of the capacitor must be large enough to couple
in low frequencies without severe attenuation. However a
large input coupling capacitor requires more time to reach
its quiescent DC voltage (Vp/2) and can increase the
turnon pops.
An input capacitor value between 0.1
m and 0.39 mF
performs well in many applications (With Rin = 22 K
W).
Bypass Capacitor Selection (Cby)
The bypass capacitor Cby provides halfsupply filtering
and determines how fast the NCP2890 turns on.
This capacitor is a critical component to minimize the
turnon
pop.
A
1.0
mF bypass capacitor value
(Cin = < 0.39
mF) should produce clickless and popless
shutdown transitions. The amplifier is still functional with
a 0.1
mF capacitor value but is more susceptible to “pop and
click” noises.
Thus, a 1.0
mF bypassing capacitor is recommended.
Figure 37. Schematic of the Demonstration Board of the 9Pin FlipChip CSP Device
+
+
Vp
INM
Vp
300 k
W
300 k
W
8
W
OUTA
OUTB
20 k
W
20 k
W
INP
BYPASS
20 k
W
1
mF
390 nF
VM
VM_P
SHUTDOWN
CONTROL
C3
1
mFC1
SHUTDOWN
R2
C2
AUDIO
INPUT
Vp
R3
20 k
W
R4*
R1
100 k
W
C4*
* R4, C4: Not Mounted
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相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP2890AFCT2G | 功能描述:音頻放大器 1W Audio Power Industrial Temp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| NCP2890DMR2 | 功能描述:音頻放大器 1W Audio Power RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| NCP2890DMR2G | 功能描述:音頻放大器 1W Audio Power Industrial Temp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| NCP2890EVB | 功能描述:音頻 IC 開發(fā)工具 ANA EVAL BRD RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| NCP2890FCT1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1.0 Watt Audio Power Amplifier |
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