Datasheet Diodes PAM8965 — 数据表

制造商	Diodes
系列	PAM8965

具有同步升压、Ssm 和外部音频反馈的 12W 立体声 D 类音频放大器 PAM8965 是一款具有集成同步升压转换器的极高效率 D 类立体声音频功率放大器。 PAM8965 可以驱动两个通道，每个通道 12W 到 4Ω 扬声器。集成放大器可实现 92% 的系统效率（在 VBAT = 7.4V 时）。该器件消耗极低的静态电流（VBAT = 7.4V 时为 10mA）和极低的停机电流 (0.7μA)。集成的电流模式升压转换器为功能丰富的 D 类立体声放大器提供稳压电源。其中包括：用于 EMI 抑制（音频和增强）的扩频调制 (SSM)，它允许使用廉价的铁氧体磁珠滤波器。非削波功率限制，采用 41 级自动增益控制。热折返，随着芯片升温而降低输出功率。外部音频反馈引脚，允许通过使用反馈网络设计自定义声音。或者，这些引脚可用于与扬声器端子的开尔文连接。 GAIN 引脚以 0.5dB 的步长设置音频增益，这样就不需要外部电阻来调整增益，这会导致增益误差。升压转换器的音频输出切换，可最大限度地减少来自电路板上组件的可听噪声。保护功能包括 VBAT 欠压和过压保护、PVDD 过压保护、所有音频输出短路保护、升压转换器的逐周期电流限制、整个系统的热关断、直流保护扬声器和提供故障标志的 FLT 引脚。

数据表

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PDF, 1.8 Mb, 语言: en, 文件上传: Oct 18, 2021, 页数: 25
12W STEREO CLASS-D AUDIO AMPLIFIER WITH SYNCHRONOUS BOOST, SSM AND EXTERNAL AUDIO FEEDBACK

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PAM8965
12W STEREO CLASS-D AUDIO AMPLIFIER
WITH SYNCHRONOUS BOOST, SSM AND EXTERNAL AUDIO FEEDBACK Pin Assignments The PAM8965 is an extremely high-efficiency Class-D stereo audio
power amplifier with an integrated synchronous boost converter. The
PAM8965 can drive two channels with 12W each into 4Ω speakers. ROUTP RBSTP RPVDD RBSTN ROUTN RFBN PGND RFBP 35 34 33 32 31 FLT 30 EN 2 29 VBAT2 RINP 3 28 PVDD RINN 4 27 PVDD LINN 5 26 BST LINP 6 25 SW SSM 7 24 SW VDD 8 23 PGND GND 9 22 PGND GND 10 21 GAIN PAM8965
YYWWXX 14 15 16 17 18 19 VBAT1 20 PGND 13 LFBN 12 LOUTN PLIM 11 GAIN pin to program audio gain at 0.5dB steps such that external
resistors are not required to adjust gain, which can result in gain error. 36 LBSTN External audio feedback pins, which allow for customization of sound
by using feedback network design. Alternatively, these pins can be
used for Kelvin connection to speaker terminals. 37 LBSTP Thermal foldback, which reduces output power as the chip heats up. 38 LPVDD Non-clipping power limit, which uses 41-step automatic gain control. 39 LFBP Spread spectrum modulation (SSM) for EMI suppression (audio and
boost), which enables the use of inexpensive ferrite bead filters. 40
1 PGND The integrated current-mode boost converter provides regulated power
to a feature-laden Class-D stereo amplifier. These include: PGND The integrated amplifier can achieve system efficiency of 92%
(at VBAT = 7.4V). The device consumes exceptionally low quiescent
current (10mA at VBAT = 7.4V) and very low shutdown current (0.7μA). GND (Top View) LOUTP Description W-QFN5050-40 (Type US) Out-of-audio switching for the boost converter, which minimizes
audible noise coming from components on the board.
Protection features include under-voltage and over-voltage protection
on VBAT, over-voltage protection on PVDD, short circuit protection on
all audio outputs, cycle-by-cycle current limit on boost converter,
thermal shutdown of the entire system, DC protection for speakers, and
an FLT pin that provides a fault flag. Features Applications Operates from 2.8V to 8.5V Supply
2  12W (10% THD+N) into 4Ω Load with VBAT = 7.4V (2SxP)
2  8W (10% THD+N) into 6Ω Load with VBAT = 3.7V (1SxP)
Auto Gain Control Responds to: …

价格

打包

	PAM8965ZLA40-13
N	1
Package	W-QFN5050-40 (Type US)

参数化

Parameters / Models	PAM8965ZLA40-13
AEC Qualified	No
Class-D or AB	D
Compliance (Only Automotive supports PPAP)	Standard
Efficiency (%)	90 %
Gain Max	26 dB
Gain Min	6 dB
IQ (mA)	10 mA
Maximum VDD (V)	8.5 V
Minimum VDD (V)	2.8
Mono or Stereo	Stereo
PSRR	67 dB
Power Limit	Yes
Power/CH (W) @ THD=1%	9.5
Power/CH (W) @ THD=10%	11.5
SNR	100 dB
Special Feature	Boost Converter Built-in Audio Feedback
Volume/ Gain	Gain Pin Adjustable

模型线

系列: PAM8965 (1)

PAM8965ZLA40-13

制造商分类

Analog > Audio