LM4840 datasheet(3/19 Pages) NSC

3 / 19 page

Absolute Maximum Ratings (Note 10)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

6.0V

Storage Temperature

-65˚C to +150˚C

Input Voltage

−0.3V to V

DD +0.3V

Power Dissipation

Internally limited

ESD Susceptibility (Note 12)

2000V

ESD Susceptibility (Note 13)

200V

Junction Temperature

150˚C

Soldering Information

Small Outline Package

Vapor Phase (60 sec.)

215˚C

Infrared (15 sec.)

220˚C

See AN-450 “Surface Mounting and their Effects on

Product Reliability” for other methods of soldering

surface mount devices.

See AN-1187 “Leadless Leadframe Package” for

detailed information on usage of LLP devices.

JC (typ) — LQA028A (Note

16)

3˚C/W

JA (typ) — LQA028A (Note

16)

42˚C/W

JC (typ) — MTC28

20˚C/W

JA (typ) — MTC28

80˚C/W

JC (typ) — MXA28A

2˚C/W

JA (typ) — MXA28A (Note 4)

41˚C/W

JA (typ) — MXA28A (Note 3)

54˚C/W

JA (typ) — MXA28A (Note 5)

59˚C/W

JA (typ) — MXA28A (Note 6)

93˚C/W

Operating Ratings

Temperature Range

MIN ≤ TA ≤TMAX

−40˚C

≤TA ≤ 85˚C

Supply Voltage

2.7V

≤ V

DD ≤ 5.5V

Electrical Characteristics for Entire IC

(Notes 7, 10)

The following specifications apply for V

DD = 5V unless otherwise noted. Limits apply for TA = 25˚C.

Symbol

Parameter

Conditions

LM4840

Units

(Limits)

Typical

(Note 14)

Limit

(Note 15)

Supply Voltage

2.7

V (min)

5.5

V (max)

Quiescent Power Supply Current

IN = 0V, IO = 0A

mA (max)

Shutdown Current

SHUTDOWN =VDD

0.7

2.0

µA (max)

Headphone Sense High Input Voltage

V (min)

Headphone Sense Low Input Voltage

0.8

V (max)

Electrical Characteristics for Volume Attenuators

(Notes 7, 10)

The following specifications apply for V

DD = 5V. Limits apply for TA = 25˚C.

Symbol

Parameter

Conditions

LM4840

Units

(Limits)

Typical

(Note 14)

Limit

(Note 15)

RANGE

Attenuator Range

Gain with Digital Volume Max

±0.5

dB (max)

Attenuation with Digital Volume Min

-81

-75

dB (min)

Mute Attenuation

MUTE =VDD, Bridged Mode

-88

-78

dB (min)

MUTE =VDD, Single-Ended Mode

-88

-78

dB (min)

Electrical Characteristics for Single-Ended Mode Operation

(Notes 7, 10)

The following specifications apply for V

DD = 5V. Limits apply for TA = 25˚C.

Symbol

Parameter

Conditions

LM4840

Units

(Limits)

Typical

(Note 14)

Limit

(Note 15)

Output Power

THD = 1.0%; f = 1kHz; R

L =32Ω

THD=10%;f=1 kHz; R

L =32Ω

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