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參數(shù)資料
| 型號(hào)： | MAX4060 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| 中文描述： | 差分麥克風(fēng)前置放大器，內(nèi)部偏置并可完全關(guān)斷 |
| 文件頁(yè)數(shù)： | 11/17頁(yè) |
| 文件大?。?/td> | 443K |
| 代理商： | MAX4060 |
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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 |
|---|---|
| MAX4060-MAX4062 | Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| MAX4061EUA | Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| MAX4060ETA | 16-Bit Fixed-Point DSP with ROM 64-TQFP -40 to 85 |
| MAX4061ETA | 16-Bit Fixed-Point DSP with ROM 64-TQFP -40 to 125 |
| MAX4062EUB | 16-bit fixed point DSP with ROM 100-LQFP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4060_05 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| MAX4060_11 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown |
| MAX40-60CA | 制造商:MDE 制造商全稱(chēng):MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE STAND-OFF VOLTAGE 12 TO 150 Volts 40000 Watt Peak Pulse Power |
| MAX4060ETA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4060ETA+T | 功能描述:傳聲器前置放大器 Differential Mic Preamplifier RoHS:否 制造商:Texas Instruments 可用增益調(diào)整:Digital control, 65 dB to 0 dB 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 最大輸入電阻:9200 Ohms 最大工作溫度:+ 85 C 封裝 / 箱體:SSOP-28 封裝:Tube |
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