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LM1972N Arkusz danych(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numer części LM1972N
Szczegółowy opis  Pot 2-Channel 78dB Audio Attenuator with Mute
Download  11 Pages
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1972N Arkusz danych(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Notes 2, 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
DD–VSS)
15V
Voltage at Any Pin
V
SS − 0.2V to VDD + 0.2V
Power Dissipation (Note 3)
150 mW
ESD SusceptabiIity (Note 4)
2000V
Junction Temperature
150˚C
Soldering Information
N Package (10 sec.)
+260˚C
Storage Temperature
−65˚C to +150˚C
Operating Ratings (Note 1) (Note 2)
T
MIN
T
A
T
MAX
Temperature Range
T
MIN ≤TA ≤TMAX
0˚C
≤T
A
≤ +70˚C
Supply Voltage (V
DD −VSS)
4.5V to 12V
Electrical Characteristics (Note 1) (Note 2)
The following specifications apply for all channels with V
DD = +6V, VSS = −6V, VIN = 5.5 Vpk, and f = 1 kHz, unless otherwise
specified. Limits apply for T
A = 25˚C. Digital inputs are TTL and CMOS compatible.
Symbol
Parameter
Conditions
LM1972
Units
(Limits)
Typical
Limit
(Note 5)
(Note 6)
I
S
Supply Current
Inputs are AC Grounded
2
4
mA (max)
THD+N
Total Harmonic Distortion plus Noise
V
IN = 0.5 Vpk @ 0dB Attenuation
0.0008
0.003
% (max)
XTalk
Crosstalk (Channel Separation)
0dB Attenuation for V
IN
110
100
dB (min)
V
CH measured @ −78dB
SNR
Signal-to-Noise Ratio
Inputs are AC Grounded
@ −12dB Attenuation
120
110
dB (min)
A-Weighted
A
M
Mute Attenuation
104
96
dB (min)
Attenuation Step Size Error
0dB to −47.5dB
±0.05
dB (max)
−48dB to −78dB
±0.25
dB (max)
Absolute Attenuation Error
Attenuation @ 0dB
0.03
0.5
dB (min)
Attenuation @ −20dB
19.8
19.0
dB (min)
Attenuation @ −40dB
39.5
39.0
dB (min)
Attenuation @ −60dB
59.3
57.5
dB (min)
Attenuation @ −78dB
76.3
74.5
dB (min)
Channel-to-Channel Attenuation
Attenuation @ 0dB, −20dB, −40dB, −60dB
±0.5
dB (max)
Tracking Error
Attenuation @ −78dB
±0.75
dB (max)
I
LEAK
Analog Input Leakage Current
Inputs are AC Grounded
10.0
100
nA (max)
R
IN
AC Input Impedance
Pins 4, 20, V
IN = 1.0 Vpk, f = 1 kHz
40
20
k
Ω (min)
60
k
Ω (max)
I
IN
Input Current
@ Pins 9, 10, 11 @ 0V < V
IN < 5V
1.0
±100
nA (max)
f
CLK
Clock Frequency
3
2
MHz (max)
V
IH
High-Level Input Voltage
@ Pins 9, 10, 11
2.0
V (min)
V
IL
Low-Level Input Voltage
@ Pins 9, 10, 11
0.8
V (max)
Data-Out Levels (Pin 12)
V
DD=6V, VSS=0V
0.1
V (max)
5.9
V (min)
Note 1: All voltages are measured with respect to GND pins (1, 3, 5, 6, 14, 16, 19), 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 func-
tional, but do not guarantee specific performance limits.
Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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 TJMAX, θJA, and the ambient temperature TA. The maximum
allowable power dissipation is PD = (TJMAX −TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM1972, TJMAX = +150˚C,
and the typical junction-to-ambient thermal resistance, when board mounted, is 65˚C/W.
Note 4: Human body model, 100 pF discharged through a 1.5 k
Ω resistor.
Note 5: Typicals are measured at 25˚C and represent the parametric norm.
Note 6: Limits are guaranteed to National’s AOQL (Average Output Quality Level).
www.national.com
2


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