LM1971

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SNAS104B – FEBRUARY 1995 – REVISED APRIL 2013

Electrical Characteristics

(1) (2)

LM1971

Units

Symbol

Parameter

Conditions

(Limits)

Supply Current

Digital Inputs Tied to 6V

1.8

3

mA (max)

THD

Total Harmonic Distortion

0.0008

0.003

% (max)

Noise

Input is AC Grounded @

−12 dB

4.0

μV

Attenuation

DR

Dynamic Range

115

dB

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)

Analog Input Leakage Current

Input is AC Grounded

5.8

100

nA (max)

Frequency Response

20 Hz–100 kHz

±0.1

dB

AC Input Impedance

40

20

k

Ω (min)

60

k

Ω (max)

Input Current

1.0

100

nA (max)

Clock Frequency

3

2

MHz (max)

High-Level Input Voltage

@ Pins 4, 5, 6

2.0

V (min)

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.

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