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LM1971MX Arkusz danych(PDF) 3 Page - Texas Instruments

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Numer części LM1971MX
Szczegółowy opis  LM1971 Overture Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

LM1971MX Arkusz danych(HTML) 3 Page - Texas Instruments

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LM1971
www.ti.com
SNAS104B – FEBRUARY 1995 – REVISED APRIL 2013
Electrical Characteristics
(1) (2)
The following specifications apply for VDD = +12V (VREFIN = +6V), VIN = 5.5 Vpk, and f = 1 kHz, unless otherwse specified.
Limits apply for TA = 25°C. Digital inputs are TTL and CMOS compatible.
LM1971
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)
IS
Supply Current
Digital Inputs Tied to 6V
1.8
3
mA (max)
THD
Total Harmonic Distortion
VIN = 0.5Vpk@ 0 dB Attenuation
0.0008
0.003
% (max)
eIN
Noise
Input is AC Grounded @
−12 dB
4.0
μV
Attenuation
A-Weighted(5)
DR
Dynamic Range
Referenced to Full Scale = +6 Vpk
115
dB
AM
Mute Attenuation
102
96
dB (min)
Attenuation Step Size Error
0 dB to
−62 dB
0.009
0.2
dB (max)
Absolute Attenuation
Attenuation @ 0 dB
0.1
0.5
dB (min)
Attenuation @
−20 dB
−20.3
−19.0
dB (min)
Attenuation @
−40 dB
−40.5
−38.0
dB (min)
Attenuation @
−60 dB
−60.6
−57.0
dB (min)
Attenuation @
−62 dB
−62.6
−59.0
dB (min)
ILEAK
Analog Input Leakage Current
Input is AC Grounded
5.8
100
nA (max)
Frequency Response
20 Hz–100 kHz
±0.1
dB
RIN
AC Input Impedance
Pin 8, VIN = 1.0 Vpk, f = 1 kHz
40
20
k
Ω (min)
60
k
Ω (max)
IIN
Input Current
@ Pins 4, 5, 6 @ 0V < VIN < 5V
1.0
100
nA (max)
fCLK
Clock Frequency
3
2
MHz (max)
VIH
High-Level Input Voltage
@ Pins 4, 5, 6
2.0
V (min)
VIL
Low-Level Input Voltage
@ Pins 4, 5, 6
0.8
V (max)
(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 specify specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(2)
All voltages are measured with respect to the GND pin (pin 3), unless otherwise specified.
(3)
Typicals are measured at 25°C and represent the parametric norm.
(4)
Limits are specifications that all parts are tested in production to meet the stated values.
(5)
Due to production test limitations, there is no limit for the Noise test. Please refer to Figure 5 and Figure 8 in Typical Performance
Characteristics.
Copyright © 1995–2013, Texas Instruments Incorporated
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