LM4834MS datasheet(2/12 Pages) NSC

2 / 12 page

Absolute Maximum Ratings (Note 2)

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 4)

2000V

Pin 5

1500V

ESD Susceptibility (Note 5)

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.

JC (typ) — MSA028CB

29˚C/W

JA (typ) — MSA028CB

95˚C/W

Operating Ratings

Temperature Range

MIN ≤ TA ≤TMAX

−40˚C

≤TA ≤ 85˚C

Supply Voltage

4.5

≤ V

DD ≤ 5.5V

Electrical Characteristics for Entire IC

(Notes 1, 2)

The following specifications apply for V

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

Symbol

Parameter

Conditions

LM4834

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

Supply Voltage

4.5

V (min)

5.5

V (max)

Quiescent Power Supply Current

IN = 0V, IO= 0A

17.5

mA (max)

Shutdown Current

pin13 =VDD

0.6

2.0

µA (max)

Electrical Characteristics for Volume Attenuators

(Notes 1, 2)

The following specifications apply for V

DD = 5V. Limits apply for TA = 25˚C.

Symbol

Parameter

Conditions

LM4834

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

RANGE

Attenuator Range

Gain with V

pin 22 = 5V

2.6

3.65

dB (max)

Attenuation with V

pin 22 = 0V

-75

-88

dB (min)

Mute Attenuation

pin 15 = 5V, Sum Out

-92

-105

dB (max)

pin 15 = 5V, Line Out/Headphone

Amp

-92

-105

dB (max)

Electrical Characteristics for Microphone Preamp and Power Supply

(Notes 1, 2)

The following specifications apply forV

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

Symbol

Parameter

Conditions

LM4834

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

Offset Voltage

IN = 0V

0.9

SNR

Signal to Noise Ratio

DD = 5V, RL =1k,f=1 kHz, VOUT =

4.7V, A-Wtd Filter

123

SWING

Output Voltage Swing

f = 1 kHz, THD < 1.0%,R

L =1kΩ

4.72

Input Referred Noise

A-Weighted Filter

1.2

µV

PSRR

Power Supply Rejection Ratio

f = 120 Hz, V

RIPPLE= 200 mVrms,

B=1µF

Mic Power Supply

L =1kΩ, Bias In = 2.5V

2.5

V (min)

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