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参数资料
| 型号： | 5962-9452702M2C |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | DAC |
| 英文描述： | QUAD, SERIAL INPUT LOADING, 8-BIT DAC, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 2/13页 |
| 文件大小： | 337K |
| 代理商： | 5962-9452702M2C |
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
10
______________________________________________________________________________________
Supply Bypassing, Layout,
and Grounding
Proper layout and grounding are essential for optimum
performance. Use large traces for the power-supply
inputs and amplifier outputs to minimize losses due to
parasitic trace resistance. Large traces also aid in moving
heat away from the package. Proper grounding improves
audio performance, minimizes crosstalk between chan-
nels, and prevents any switching noise from coupling into
the audio signal. Route ground return paths that carry
switching transients to power ground (PGND). Keep high-
current return paths that connect to PGND short and
route them away from analog ground (GND) and any
traces or components in the audio input signal path. Use
a star connection to connect GND and PGND together at
one point on the PC board.
Bypass each PVDD with a 0.1μF capacitor to PGND.
Bypass VDD to GND with a 0.1μF capacitor. Place a bulk
capacitor between VDD and PGND. Place the bypass
capacitors as close to the MAX9715 as possible.
Use large, low-resistance output traces. Current drawn
from the output increases as load impedance decreases.
High-output-trace resistance decreases the power deliv-
ered to the load. For example, when compared to a 0
Ω
trace, a 100m
Ω trace reduces the power delivered to a
4
Ω load from 2.1W to 2.0W. Large output, supply, and
GND traces decrease the thermal impedance of the cir-
cuit and allow more heat to be radiated from the MAX9715
to the air.
The MAX9715 thin QFN-EP package features an
exposed thermal pad on its underside. This pad lowers
the package’s thermal impedance by providing a direct-
heat conduction path from the die to the PC board.
Connect the exposed thermal pad to an electrically iso-
lated pad of copper. A bigger pad area provides better
thermal performance. Connect EP to GND if PC board
layout rules do not allow for isolated pads of copper. If
EP is connected to GND, ensure that high-current return
paths do not flow through EP.
Biamp Configuration
The
Typical Application Circuit shows the MAX9715
configured as a mid-/high-frequency amplifier and the
MAX9713 is configured as a mono bass amplifier.
Capacitors C1 and C2 set the highpass cutoff frequen-
cy according to the following equation:
where RIN is the input resistance of the MAX9715 and
C1 = C2. The 10μF capacitors on the output of the
MAX9715 ensure a two-pole roll-off with the 5
Ω load
shown.
The stereo signal is summed to a mono signal and then
sent to a two-pole lowpass filter. The filtered signal is
then amplified by the MAX9713. The passband gain of
the lowpass filter, for coherent left and right signals is
(-2 x R3) / R1, where R1 = R2. The cutoff frequency of
the lowpass filter is set by the following equation:
f
CC
R
=×
××
×
1
2
1
3
434
π
f
RC
IN
=
××
1
21
π
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 5962-9452702MEA | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| 5962-9453001M2A | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| 5962-9453001MEA | 制造商:Texas Instruments 功能描述:Current Mode PWM Controller 1.5A 16-Pin CDIP Tube 制造商:Texas Instruments 功能描述:CURRENT MODE PWM CNTRLR 1.5A 16CDIP - Rail/Tube |
| 5962-9453001Q2A | 制造商:Texas Instruments 功能描述:ADV CUR MODE PWM, UC1856L20883B, 20 PIN - Rail/Tube |
| 5962-9453201MXA | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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