BassMax, I2C, Volume and Gain Control
參數(shù)資料
型號(hào): MAX9726BETP+T
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 21/24頁(yè)
文件大?。?/td> 0K
描述: IC AMP AUDIO .124W STER 20TQFN
標(biāo)準(zhǔn)包裝: 2,500
系列: DirectDrive®
類(lèi)型: AB 類(lèi)
輸出類(lèi)型: 耳機(jī),2-通道(立體聲)
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量: 124mW x 2 @ 16 歐姆
電源電壓: 2.7 V ~ 5.5 V
特點(diǎn): 低音增強(qiáng)模式,消除爆音,I²C,靜音,短路和熱保護(hù),關(guān)機(jī),音量控制
安裝類(lèi)型: 表面貼裝
供應(yīng)商設(shè)備封裝: 20-TQFN-EP(4x4)
封裝/外殼: 20-WFQFN 裸露焊盤(pán)
包裝: 帶卷 (TR)
MAX9726
DirectDrive, Headphone Amplifier with
BassMax, I2C, Volume and Gain Control
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = SHDN = 5V, PGND = SGND = 0V, C1 = C2 = 1F, CPREG = CNREG = 1F, BM_ = 0V, RIN = 10kΩ, RF = 10kΩ, maximum vol-
ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and PGND where specified. Outputs in phase, both
channels loaded. TA = +25°C, unless otherwise noted.) (See the Functional Diagram/Typical Operating Circuit)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
FREQUENCY (Hz)
THD+N
(%)
MAX9726
toc08
10
100
1k
10k
100k
0.001
0.01
0.1
1
10
VCC = 5V
RL = 32
Ω
OUTPUT POWER = 80mW
OUTPUT POWER = 40mW
POWER DISSIPATION
vs. OUTPUT POWER
MAX9726
toc09
TOTAL OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
160
120
80
40
100
200
300
400
500
600
0
0200
VDD = 3.3V
fIN = 1kHz
POUT = POUTR + POUTL
RL = 32
Ω
RL = 16
Ω
POWER DISSIPATION
vs. OUTPUT POWER
MAX9726
toc10
TOTAL OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
200
160
120
80
40
100
200
300
400
500
600
700
800
900
1000
0
0240
VDD = 5V
fIN = 1kHz
POUT = POUTR + POUTL
RL = 16
Ω
RL = 32
Ω
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9726
toc11
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
100
20
40
60
80
100
120
0
10
1000
VDD = 3.3V, fIN = 1kHz
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9726
toc12
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
100
30
60
90
120
150
180
210
0
10
1000
VDD = 5V, fIN = 1kHz
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9726
toc13
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(mW)
5.0
4.5
4.0
3.5
3.0
20
40
60
80
100
120
140
160
180
0
2.5
5.5
RL = 16
Ω
fIN = 1kHz
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9726
toc14
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(mW)
20
40
60
80
100
120
140
160
0
5.0
4.5
4.0
3.5
3.0
2.5
5.5
THD+N = 10%
THD+N = 1%
RL = 32
Ω
fIN = 1kHz
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