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參數(shù)資料
| 型號： | MAX4060EUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| 中文描述： | 1 CHANNEL, AUDIO PREAMPLIFIER, PDSO8 |
| 封裝： | MICRO MAX PACKAGE-8 |
| 文件頁數(shù)： | 11/17頁 |
| 文件大?。?/td> | 443K |
| 代理商： | MAX4060EUA |
M
Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown
______________________________________________________________________________________
11
MAX4061/MAX4062
The MAX4061/MAX4062 have a lower bias voltage and
low-impedance outputs (optimum electret bias resistor
can then be set externally). This gives a low-noise, flexi-
ble solution that can run from 2.4V to 5.5V, suitable for
hand-held devices such as PDAs that typically have
audio power supplies in the 3V region (see Figure 3).
In applications where the differential microphone is
placed some distance from the MAX4060/MAX4061/
MAX4062, using a remote differential bias scheme as
shown in Figure 4 can provide improved noise rejection.
Output
MAX4060/MAX4061 DC Bias
The output voltage has a DC-bias voltage independent
of the power supplies, resulting in superior PSRR per-
formance. The MAX4061 output is high impedance
when the part is in shutdown mode. AC-coupling the
output into the next audio stage (e.g., CODEC) is rec-
ommended.
Applications Information
Shutdown Mode
The MAX4061 features a low-power, complete shut-
down mode. When
SHDN
goes low, the supply current
drops to 0.3μA, the output enters a high-impedance
state, and the bias current to the microphone is
switched off. Driving
SHDN
high enables the amplifier.
SHDN
should not be left floating.
Power Supplies and Layout
The MAX4060 operates from a 4.5V to 5.5V single sup-
ply and the MAX4061/MAX4062 operate from a 2.4V to
5.5V single supply. Bypass the power supply with a
0.1μF capacitor to ground. In systems where analog
and digital grounds are available, the MAX4060/
MAX4061 should be connected to the analog ground.
IN-
IN+
6
5
4
V
CC
4.5V TO 5.5V
MAX4060
INT/AUX
1
OUT
2
GND
7
x10
V
BIAS
x10
BIAS
3
AUX_IN
MICROPHONE
INPUT
8
R
BIAS
Figure 2. MAX4060 Used for Biasing a Microphone
相關(guān)PDF資料 |
PDF描述 |
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| MAX4063 | 16-bit fixed point DSP with ROM 100-LQFP -40 to 125 |
| MAX4063ETE | Replaced by TMS320VC33 : Digital Signal Processor 132-BQFP 0 to 70 |
| MAX4063EUD | Replaced by TMS320VC33 : Digital Signal Processor 132-BQFP |
| MAX4066CEE | Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog Switches |
| MAX4066AEEE | Circular Connector; No. of Contacts:15; Series:MS27466; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MAX4061ETA | 制造商:Maxim Integrated Products 功能描述:DIFFERENTIAL MICROPHONE PREAMPLIFIERS WITH IN - Rail/Tube |
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