LM1972M/NOPB National Semiconductor, LM1972M/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM1972M/NOPB
• Description: IC AUDIO ATTENUATR W/MUTE 20SOIC
• Manufacturer: National Semiconductor
• Type: Audio Attenuatorr

Specifications of LM1972M/NOPB

• Applications: Consoles, MIDI
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Attenuator Step Size: 0.5/1dB
• Number Of Bits: 16
• Number Of Channels: 2
• Power Dissipation: 150mW
• Supply Current: 4mA
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Package Type: SOIC W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM1972M; *LM1972M/NOPB; LM1972M

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I
THD+N
XTalk
SNR
A
I
R
I
f
V
V
S
LEAK
IN
CLK
Symbol
M
IH
IL
IN
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
The following specifications apply for all channels with V
specified. Limits apply for T
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
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 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is PD = (T
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 kΩ 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).
Supply Voltage (V
Voltage at Any Pin
Power Dissipation (Note 3)
ESD SusceptabiIity (Note 4)
Junction Temperature
Supply Current
Total Harmonic Distortion plus Noise
Crosstalk (Channel Separation)
Signal-to-Noise Ratio
Mute Attenuation
Attenuation Step Size Error
Absolute Attenuation Error
Channel-to-Channel Attenuation
Tracking Error
Analog Input Leakage Current
AC Input Impedance
Input Current
Clock Frequency
High-Level Input Voltage
Low-Level Input Voltage
Data-Out Levels (Pin 12)
DD
–V
Parameter
SS
)
A
= 25°C. Digital inputs are TTL and CMOS compatible.
JMAX
V
− T
SS
A
)/θ
− 0.2V to V
JA
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM1972, T
(Notes 1, 2)
(Notes 2, 1)
Inputs are AC Grounded
V
0dB Attenuation for V
V
Inputs are AC Grounded
@ −12dB Attenuation
A-Weighted
0dB to −47.5dB
−48dB to −78dB
Attenuation @ 0dB
Attenuation @ −20dB
Attenuation @ −40dB
Attenuation @ −60dB
Attenuation @ −78dB
Attenuation @ 0dB, −20dB, −40dB, −60dB
Attenuation @ −78dB
Inputs are AC Grounded
Pins 4, 20, V
@ Pins 9, 10, 11 @ 0V < V
@ Pins 9, 10, 11
@ Pins 9, 10, 11
V
DD
150 mW
IN
CH
DD
+ 0.2V
2000V
150°C
= 0.5 Vpk @ 0dB Attenuation
=6V, V
measured @ −78dB
15V
DD
= +6V, V
SS
IN
=0V
2
= 1.0 Vpk, f = 1 kHz
Conditions
Operating Ratings
SS
Soldering Information
Storage Temperature
Temperature Range
T
Supply Voltage (V
MIN
= −6V, V
N Package (10 sec.)
IN
≤
T
IN
A
≤
< 5V
IN
T
= 5.5 Vpk, and f = 1 kHz, unless otherwise
MAX
JMAX
, θ
DD
JA
, and the ambient temperature T
− V
SS
)
(Note 5)
Typical
0.0008
0.03
19.8
39.5
59.3
76.3
10.0
110
120
104
1.0
40
T
0°C
2
3
(Notes 1, 2)
MIN
LM1972
≤
T
T
(Note 6)
A
0.003
±0.05
±0.25
±0.75
A
Limit
±100
19.0
38.5
57.5
74.5
±0.5
100
110
100
0.5
2.0
0.8
0.1
5.9
96
20
60
−65°C to +150°C
4
2
≤
A
4.5V to 12V
. The maximum
T
+70°C
MAX
JMAX
MHz (max)
mA (max)
dB (max)
dB (max)
dB (max)
dB (max)
nA (max)
kΩ (max)
nA (max)
+260°C
% (max)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
kΩ (min)
(Limits)
V (max)
V (max)
V (min)
V (min)
Units
= +150°