參數(shù)資料
型號(hào)： LM4855
廠商： National Semiconductor Corporation
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： Boomer AUDIO POWER AMPLIFIER Integrated Audio Amplifier System
中文描述： Boomer音頻功率放大器集成音頻放大器系統(tǒng)
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 1116K
代理商： LM4855
Electrical Characteristics
(Notes 3, 8) (Continued)
The following specifications apply for V
DD
= 5.0V, T
A
= 25C unless otherwise specified.
Symbol
Parameter
Conditions
LM4855
Units
(Limits)
Typical
(Note 5)
Limits
(Note 6)
PSRR
Power Supply Rejection Ratio
SPKR
OUT
V
RIPPLE
= 200mV
PP
; f = 217Hz, C
B
=
1.0μF
All audio inputs terminated into 50
;
Output referred Gain (BTL) = 12dB
Output Mode 1, 3, 5, 7
V
RIPPLE
= 200mV
PP
; f = 217Hz, C
B
=
1.0μF
All audio inputs terminated into 50
;
Output referred Maximum gain setting
Output Mode 2, 3
Output Mode 4, 5
Output Mode 6, 7
57
54
dB (min)
Power Supply Rejection Ratio
R
OUT
and L
OUT
62
57
54
59
54
51
1.4
V
DD
0.4
GND
-35.1
-33.9
11.4
12.6
dB (min)
dB (min)
dB (min)
V (min)
V (max)
V (max)
V (min)
dB (min)
dB (max)
dB (min)
dB (max)
dB
dB ( max)
dB (min)
dB (max)
dB (min)
k
(min)
k
(max)
k
(min)
k
(max)
k
(min)
k
(max)
k
(min)
k
(max)
k
(min)
k
(max)
C (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
(min)
MHz (max)
V
IH
Logic High Input Voltage
V
IL
Logic Low Input Voltage
Digital Volume Range (R
IN
and
L
IN
)
Input referred minimum gain
-34.5
Input referred maximum gain
12.0
Digital Volume Stepsize
Digital Volume Stepsize Error
Phone_In_IHF Volume
1.5
±
0.1
12
±
0.6
11.4
12.6
72
15
25
37.5
62.5
75
125
25
42
75
125
150
20
20
30
20
20
20
50
50
DC
10
BTL gain from Phone_In _IHF to
SPKR
OUT
Output Mode 2, 4, 6
Phone _In_IHF Mute Attenuation
Phone_In_IHF Input Impedance
80
20
Phone_In_HS Input Impedance
Maximum gain setting
50
Mininum gain setting
100
R
IN
and L
IN
Input Impedance
Maximum gain setting
33.5
Mininum gain setting
100
t
SD
t
ES
t
EH
t
EL
t
DS
t
DH
t
CS
t
CH
t
CL
f
CLK
Thermal Shutdown Temperature
Enable Setup Time (ENB)
Enable Hold Time (ENB)
Enable Low Time (ENB)
Data Setup Time (DATA)
Data Hold Time (DATA)
Clock Setup Time (CLK)
Clock Logic High Time (CLK)
Clock Logic Low Time (CLK)
Clock Frequency
170
L
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