參數(shù)資料
型號(hào)： MAX9773ETG+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 15/21頁(yè)
文件大?。?/td> 0K
描述： IC AMP AUDIO PWR 1.8W D 24TQFN
標(biāo)準(zhǔn)包裝： 2,500
類(lèi)型： D 類(lèi)
輸出類(lèi)型： 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： 1.8W x 2 @ 4 歐姆
電源電壓： 2.6 V ~ 5.5 V
特點(diǎn)： 消除爆音，差分輸入，短路和熱保護(hù)，關(guān)閉
安裝類(lèi)型： 表面貼裝
供應(yīng)商設(shè)備封裝： 24-TQFN-EP（4x4）
封裝/外殼： 24-WFQFN 裸露焊盤(pán)
包裝： 帶卷 (TR)
MAX9773
1.8W, Filterless, Ultra-Low EMI,
Stereo Class D Audio Power Amplifier
_______________________________________________________________________________________
3
Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 4
, L = 33H.
For RL = 8
, L = 68H.
Note 3: When driving speakers below 4
with large signals, exercise care to avoid violating the absolute maximum rating for continuous
output current.
Note 4: Testing performed with 8
resistive load in series with 68H inductive load connected across the BTL output. Mode transi-
tions are controlled by SHDN. KCP level is calculated as: 20 x log[(peak voltage during mode transition, no input signal)].
Units are expressed in dBV.
ELECTRICAL CHARACTERISTICS (continued)
(VDD = VPVDD = VSHDN = 3.3V, VGND = VPGND = 0V, SYNC = 0V (FFM), gain = 12dB (GAIN1 = 1, GAIN2 = 1), RL connected between
OUT+ and OUT-, RL =
∞, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SYNC_OUT Capacitance Drive
CSYNC_OUT
100
pF
Bridge-tied capacitance
200
Capacitive Drive
CL
Single ended
400
pF
Into shutdown
-50
Click-and-Pop Level
KCP
Peak reading, A-weighted,
32 samples per second
(Note 4)
Out of
shutdown
-50
dBV
Efficiency
η
POUT = 600mW per channel,
fIN = 1kHz, RL = 8
85
%
GAIN1 = 0, GAIN2 = 0
10
16
GAIN1 = 1, GAIN2 = 0
30
GAIN1 = 0, GAIN2 = 1
45
Input Resistance
RIN
GAIN1 = 1, GAIN2 = 1
60
k
GAIN1 = 0, GAIN2 = 0
26
GAIN1 = 1, GAIN2 = 0
20
GAIN1 = 0, GAIN2 = 1
15.6
Gain
AV
GAIN1 = 1, GAIN2 = 1
12
dB
Channel-to-Channel Gain
Tracking
1%
Crosstalk
L to R, R to L, f = 10kHz, RL = 8
,
POUT = 300mW
80
dB
DIGITAL INPUTS (
SHDN, SYNC, GAIN1, GAIN2)
Input-Voltage High
VINH
2V
Input-Voltage Low
VINL
0.8
V
Input Leakage Current
(SHDN, GAIN1, GAIN2)
±1A
VSYNC = GND, normal operation
-15
-7
Input Leakage Current (SYNC)
VSYNC = VDD, normal operation
12
25
A
DIGITAL OUTPUTS (SYNC_OUT)
Output-Voltage High
VOH
IOH = 3mA, VDD = 3.3V
2.4
V
Output-Voltage Low
VOL
IOL = 3mA
0.4
V
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