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參數(shù)資料
| 型號： | LM1971N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | LM1971 Overture⑩ Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator with/Mute |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大小： | 248K |
| 代理商： | LM1971N |
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage, V
DD
Voltage at any pin
ESD Susceptibility (Note 4)
Soldering Information
N Package (10s)
M Package
Vapor Phase (60s)
Infrared (15s)
Power Dissipation (Note 3)
15V
(GND 0.2V) to (V
DD
+0.2V)
3000V
260C
215C
220C
150 mW
Junction Temperature
Storage Temperature
150C
65C to +150C
Operating Ratings
(Notes 1, 2)
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Thermal Resistance
M08A Package,
θ
JA
N08E Package,
θ
JA
Supply Voltage
20C
≤
T
A
≤
+85C
167C/W
102C/W
4.5V to 12V
Electrical Characteristics
(Notes 1, 2)
The following specifications apply for V
= +12V (V
IN = +6V), V
= 5.5 V
pk
, and f = 1 kHz, unless otherwse specified.
Limits apply for T
A
= 25C. Digital inputs are TTL and CMOS compatible.
Symbol
Parameter
Conditions
LM1971
Units
(Limits)
Typical
(Note 5)
1.8
0.0008
4.0
Limit
(Note 6)
3
0.003
I
S
THD
e
IN
Supply Current
Total Harmonic Distortion
Noise
Digital Inputs Tied to 6V
V
IN
= 0.5V
pk
@
0 dB Attenuation
Input is AC Grounded
@
12 dB Attenuation
A-Weighted (Note 7)
Referenced to Full Scale = +6 V
pk
mA (max)
% (max)
μV
DR
A
M
Dynamic Range
Mute Attenuation
Attenuation Step Size Error
Absolute Attenuation
115
102
0.009
0.1
20.3
40.5
60.6
62.6
5.8
±
0.1
40
dB
96
0.2
0.5
19.0
38.0
57.0
59.0
100
dB (min)
dB (max)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
nA (max)
dB
k
(min)
k
(max)
nA (max)
MHz (max)
V (min)
V (max)
0 dB to 62 dB
Attenuation
@
0 dB
Attenuation
@
20 dB
Attenuation
@
40 dB
Attenuation
@
60 dB
Attenuation
@
62 dB
Input is AC Grounded
20 Hz–100 kHz
Pin 8, V
IN
= 1.0 V
pk
, f = 1 kHz
I
LEAK
Analog Input Leakage Current
Frequency Response
AC Input Impedance
R
IN
20
60
100
2
2.0
0.8
I
IN
f
CLK
V
IH
V
IL
Input Current
Clock Frequency
High-Level Input Voltage
Low-Level Input Voltage
@
Pins 4, 5, 6
@
0V
<
V
IN
<
5V
1.0
3
@
Pins 4, 5, 6
@
Pins 4, 5, 6
Note 1:
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 which
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 2:
All voltages are measured with respect to the GND pin (pin 3), unless otherwise specified.
Note 3:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
,
θ
, and the ambient temperature T
. The maximum
allowable power dissipation is P
= (T
– T
)/
θ
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM1971N and LM1971M,
T
JMAX
= +150C, and the typical junction-to-ambient thermal resistance,
θ
JA
, when board mounted is 102 C/W and 167 C/W, respectively.
Note 4:
Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5:
Typicals are measured at 25C and represent the parametric norm.
Note 6:
Limits are guarantees that all parts are tested in production to meet the stated values.
Note 7:
Due to production test limitations, there is no limit for the Noise test. Please refer to the noise measurements in the Typical Performance Characteristics sec-
tion.
www.national.com
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| LM1971N/NOPB | 功能描述:IC ATTENUATOR AUDIO W/MUTE 8-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:Overture™ 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| LM1972 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Pot 2-Channel 78dB Audio Attenuator with Mute |
| LM1972M | 功能描述:衰減器 -IC RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰減:18 dB 容差: 阻抗: 功率額定值:30 dBm 安裝風(fēng)格:SMD/SMT 工作溫度范圍:- 40 C to + 85 C |
| LM1972M/NOPB | 功能描述:有源衰減器 RoHS:否 制造商:TriQuint Semiconductor 通道數(shù)量: 最大頻率: 阻抗: 最大 VSWR: 位數(shù): 最大工作溫度: 最小工作溫度: |
| LM1972MX | 功能描述:衰減器 -IC RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰減:18 dB 容差: 阻抗: 功率額定值:30 dBm 安裝風(fēng)格:SMD/SMT 工作溫度范圍:- 40 C to + 85 C |
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