參數(shù)資料
型號(hào)： LM4917MT
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻／視頻放大
英文描述： Ground-Referenced, 95mW Stereo Headphone Amplifier
中文描述： 0.095 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14
封裝： TSSOP-14
文件頁(yè)數(shù)： 4/18頁(yè)
文件大小： 1208K
代理商： LM4917MT
Absolute Maximum Ratings
(Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
4.0V
65C to +150C
-0.3V to V
DD
+ 0.3V
Internally Limited
2000V
200V
Junction Temperature
Thermal Resistance
θ
JC
(TSSOP)
θ
JA
(TSSOP)
150C
40C/W
109C/W
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage (V
DD
)
40C
≤
T
A
≤
85C
1.4V
≤
V
CC
≤
3.6V
Electrical Characteristics V
DD
= 3V
(Notes 1, 2)
The following specifications apply for V
DD
= 3V, A
V
= 1, and 16
load unless otherwise specified. Limits apply to T
A
= 25C.
Symbol
Parameter
Conditions
LM4917
Units
(Limits)
Typ
(Note 6)
Limit
(Notes 7,
8)
20
I
DD
Quiescent Power Supply Current
V
IN
= 0V, I
O
= 0A, both channels
enabled
V
IN
= 0V, I
O
= 0A, one channel
enabled
V
SD_LC
= V
SD_RC
= GND
R
L
= 32
THD+N = 1% (max); f = 1kHz, R
L
=
16
THD+N = 1% (max); f = 1kHz, R
L
=
32
11
mA (max)
9
mA
I
SD
V
OS
P
O
Shutdown Current
Output Offset Voltage
Output Power
0.01
1
95
1
10
50
μA (max)
mV (max)
mW (min)
82
mW
THD+N
Total Harmonic Distortion + Noise P
O
= 50mW, f = 1kHz, R
L
= 32
(A-weighted) single channel
V
RIPPLE
= 200mV sine p-p,
f = 1kHz
f = 20kHz
R
L
= 32
, P
OUT
= 20mW, f = 1kHz
0.02
%
PSRR
Power Supply Rejection Ratio
70
55
100
V
IH
=
dB
SNR
V
IH
Signal-to-Noise Ratio
Shutdown Input Voltage High
dB
0.7*CPV
DD
V
IL
=
0.3*CPV
DD
339
70
±
0.1
V (min)
V
IL
Shutdown Input Voltage Low
V (max)
T
WU
X
TALK
I
L
Wake Up Time From Shutdown
Crosstalk
Input Leakage Current
μs (max)
dB
nA
R
L
= 16
, P
O
= 1.6mW, f = 1kHz
Note 1:
All voltages are measured with respect to the GND pin unless otherwise specified.
Note 2:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions that
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given; however, the typical value is a good indication of device performance.
Note 3:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
,
θ
JA
, and the ambient temperature, T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
- T
A
) /
θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4917, see power
de-rating currents for more information.
Note 4:
Human body model, 100pF discharged through a 1.5k
resistor.
Note 5:
Machine Model, 220pF-240pF discharged through all pins.
Note 6:
Typicals are measured at 25C and represent the parametric norm.
Note 7:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9:
If the product is in shutdown mode and V
exceeds 3.6V (to a max of 4V V
) then most of the excess current will flow through the ESD protection circuits.
If the source impedance limits the current to a max of 10mA, then the part will be protected. If the part is enabled when V
DD
is above 4V circuit performance will
be curtailed or the part may be permanently damaged.
Note 10:
Human body model, 100pF discharged through a 1.5k
resistor.
L
www.national.com
4
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4917MT/NOPB 功能描述:音頻放大器 95mW St Headphone Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4917MTBD 功能描述:BOARD EVALUATION LM4917MT RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:-
LM4917MTX 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4917MTX/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4917SD 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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