The following specifications apply for 3V

≤ V

DD

DD

≤ 5V, unless otherwise specified. Limits apply for T

25˚C.

Symbol

Parameter

Conditions

LM4844

Units

(Limits)

Typical

(Note 6)

Limits (Notes

7, 8)

Mono Volume Control Range

maximum gain setting

12

11.5

12.5

dB (min)

dB (max)

minimum gain setting

-34.5

-35

-34

dB (min)

dB (max)

Volume Control Step Size

1.5

dB

Volume Control Step Size

Error

+/-0.2

+/-0.5

dB (max)

Stereo Channel to Channel

Gain Mismatch

0.3

dB

Mute Attenuation

Mode 12, V

Headphone

100

dB

L

maximum gain setting

33

25

42

k

Ω (min)

k

Ω (max)

minimum gain setting

100

75

125

k

Ω (min)

k

Ω (max)

M

maximum gain setting

20

15

25

k

Ω (min)

k

Ω (max)

minimum gain setting

96

73

123

k

Ω (min)

k

Ω (max)

The following specifications apply for 3V

≤ V

DD

DD

≤ 5V, unless otherwise specified. Limits apply for T

25˚C.

Symbol

Parameter

Conditions

LM4844

Units

(Limits)

Typical

(Note 6)

Limits (Notes

7, 8)

t

1

SCL period

2.5

µs (min)

t

2

SDA Set-up Time

100

ns (min)

t

3

SDA Stable Time

0

ns (min)

t

4

Start Condition Time

100

ns (min)

t

5

Stop Condition time

100

ns (min)

V

IH

Digital Input High Voltage

0.7 x I

V (min)

V

IL

Digital Input Low Voltage

0.3 x I

DD

V (max)

Note 1: All voltages are measured with respect to the GND pin 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 4: Human body model, 100pF discharged through a 1.5k

Ω resistor.

Note 5: Machine Model, 220pF-240pF discharged through all pins.

Note 6: Typicals are measured at +25˚C and represent the parametric norm.

Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Note 9: Shutdown current and supply current are measured in a normal room environment.

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