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參數(shù)資料
| 型號： | MAX4060ETA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/15頁 |
| 文件大小： | 0K |
| 描述： | IC PREAMP AUDIO STER AB 8TDFN |
| 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： | AB 類 |
| 輸出類型： | 2 通道（立體聲） |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 特點(diǎn)： | 差分輸入，麥克風(fēng) |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 8-TDFN-EP（3x3） |
| 封裝/外殼： | 8-WDFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
MAX4060/MAX4061/MAX4062
Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown
10
______________________________________________________________________________________
AUX_IN
9
4
IN-
IN+
7
6
5
VCC
2.4V TO 5.5V
MAX4062
2
GND
8
VBIAS
G2
G1
BIAS
RBIAS
CBIAS
100k
Ω
OUT 3
INT/AUX
10
1
x10
Figure 1. MAX4062 with Auxiliary Input Configuration
ential inputs and to set the lower 3dB point (fCUT) of the
amplifier by sizing the output capacitor appropriately.
The input impedance matching on the differential input
is typically 1%, allowing input capacitor matching to be
effective at improving low-frequency PSRR.
Common-Mode Rejection Ratio
The common-mode rejection ratio (CMRR) refers to the
amount of rejection that the amplifier is capable of pro-
viding to any signal applied equally to the IN+ and IN-
inputs. In the case of amplifying low-level microphone
signals in noisy digital environments, it is a key figure of
merit. In audio circuits, this is generally measured for
VIN as an AC signal:
CMRR(dB) = ADM / ACM
where ADM is the differential gain, ACM is the common-
mode gain.
Input voltages are sufficiently small such that the output
is not clipped in either differential or common-mode
application. The topology used in the MAX4061/
MAX4062 means that the CMRR actually improves at
higher differential gains—another advantage of using
differential sensing.
Auxiliary Input
The auxiliary input is a single-ended input intended to
be used with a jack-socket-type microphone input
(Figure 1). Internal DC-bias components (as on the
main inputs) allow the input signal to be AC-coupled.
Mechanically switched jack sockets can be used in
conjunction with the INT/AUX select pin, allowing the
auxiliary microphone input to be automatically selected
when a jack socket is inserted.
Microphone Bias Voltage
MAX4060
The MAX4060 has a microphone bias voltage designed
to comply with the Microsoft/Intel PC99/2001 audio
standard. It features source impedance of greater than
2k
Ω, and delivers more than 2V of bias when loaded
with a current of 800μA. This limits operation of this part
to supplies between 4.5V to 5.5V (see Figure 2).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4060EUA | 制造商:Maxim Integrated Products 功能描述:DIFFERENTIAL MICROPHONE PREAMPLIFIERS WITH IN - Rail/Tube |
| MAX4060EVKIT | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit for the MAX4060 |
| MAX4060-MAX4062 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| MAX4061 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| MAX4061EGA | 制造商:Maxim Integrated Products 功能描述:DIFFERENTIAL MICROPHONE PREAMPLIFIERS WITH IN - Rail/Tube |
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