The following specifications apply fo" />
參數(shù)資料
型號： LM4855ITL/NOPB
廠商： National Semiconductor
文件頁數(shù)： 24/27頁
文件大小： 0K
描述： IC AMP AUDIO PWR 1.5W AB 18USMD
標準包裝： 1
系列： Boomer®
類型： AB 類
輸出類型： 1-通道（單聲道），帶立體聲耳機
在某負載時最大輸出功率 x 通道數(shù)量： 1.5W x 1 @ 4 歐姆; 115mW x 2 @ 32 歐姆
電源電壓： 2.6 V ~ 5 V
特點： 消除爆音，靜音，關(guān)機，SPI，熱保護，音量控制
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 18-uSMD
封裝/外殼： 18-WFBGA
包裝： 標準包裝
其它名稱： LM4855ITLDKR
SNAS164C – JUNE 2002 – REVISED MAY 2013
3V Electrical Characteristics
(1) (2)
The following specifications apply for VDD= 3.0V, TA= 25°C unless otherwise specified.
Symbol
Parameter
Conditions
LM4855
Units
(Limits)
Typical
Limits
(3)
(4)
Output mode 1
4.5
7
mA (max)
VIN = 0V; No loads
Output mode 1
5.0
8
mA (max)
VIN = 0V; Loaded (Fig.1)
IDD
Supply Current
Output modes 2, 3, 4, 5, 6, 7
6.5
10
mA (max)
VIN = 0V; No loads
Output modes 2, 3, 4, 5, 6, 7
7
11
mA (max)
VIN = 0V; Loaded (Fig. 1)
ISD
Shutdown Current
Output mode 0
0.1
2.0
A (max)
VOS
Output Offset Voltage
VIN = 0V
5.0
40
mV (max)
SPKROUT; RL = 4
430
mW
THD+N = 1%; f = 1kHz, LM4855LQ
SPKROUT; RL = 8
340
300
mW (min)
PO
Output Power
THD+N = 1%; f = 1kHz
ROUT and LOUT; RL = 32
25
20
mW (min)
THD+N = 0.5%; f = 1kHz
SPKROUT
0.5
%
f = 20Hz to 20kHZ
POUT = 250mW; RL = 8
THD+N
Total Harmonic Distortion Plus Noise
ROUT and LOUT
0.5
%
f = 20Hz to 20kHZ
POUT = 20mW; RL = 32
NOUT
Output Noise
A-weighted(5)
29
V
VRIPPLE = 200mVPP; f = 217Hz, CB = 1.0F
58
55
dB (min)
Power Supply Rejection Ratio
All audio inputs terminated into 50
;
SPKROUT
Output referred Gain (BTL) = 12dB
Output Mode 1, 3, 5, 7
VRIPPLE = 200mVPP; f = 217Hz, CB = 1.0F
Power Supply Rejection Ratio
PSRR
All audio inputs terminated into 50
;
ROUTand LOUT
Output referred Maximum gain setting
Output Mode 2, 3
63
60
dB (min)
Output Mode 4, 5
58
55
dB (min)
Output Mode 6, 7
55
52
dB (min)
VIH
Logic High Input Voltage
1.4
V (min)
VDD
V (max)
VIL
Logic Low Input Voltage
0.4
V (max)
GND
V (min)
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
(2)
All voltages are measured with respect to the ground pin, unless otherwise specified.
(3)
Typical specifications are specified at +25°C and represent the most likely parametric norm.
(4)
Tested limits are ensured to AOQL (Average Outgoing Quality Level).
(5)
Please refer to the Output Noise vs Output Mode table in the Typical Performance Characteristics section for more details.
6
Copyright 2002–2013, Texas Instruments Incorporated
Product Folder Links: LM4855
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