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

ESD Susceptibility (Note 5)

2000V

pin 3

750V

ESD Susceptibility (Note 6)

200V

pin 3

100V

Junction Temperature

150˚C

Soldering Information

TQFP 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.

θ

74˚C/W

Operating Ratings

Temperature Range

T

−40˚C

≤ T

Analog Supply Range

4.2V

≤ AV

Digital Supply Range

3.0V

≤ DV

The following specifications apply for AV

Limits apply for T

Symbol

Parameter

Conditions

LM4549

Units

(Limits)

Typical

(Note 7)

Limit

(Note 8)

AV

DD

Analog Supply Range

4.2

V (min)

5.5

V (max)

DV

DD

Digital Supply Range

3.0

V (min)

5.5

V (max)

D

IDD

Digital Quiescent Power Supply

Current

D

43

mA

D

20

mA

A

IDD

Analog Quiescent Power Supply

Current

53

mA

I

DSD

Digital Shutdown Current

500

µA

I

ASD

Analog Shutdown Current

30

µA

V

REF

Reference Voltage

2.23

V

PSRR

Power Supply Rejection Ratio

40

dB

Analog Loopthru Mode

Dynamic Range (Note 2)

CD Input to Line Output, -60dB Input

THD+N, A-Weighted

97

90

dB (min)

THD

Total Harmonic Distortion

V

0.01

0.02

% (max)

Analog Input Section

V

IN

Line Input Voltage

1

Vrms

Mic Input with 20dB Gain

0.1

Vrms

Mic Input with 0dB Gain

1

Vrms

Xtalk

Crosstalk

CD Left to Right

-95

dB

Z

IN

Input Impedance(Note 2)

40

10

k

Ω (min)

C

IN

Input Capacitance

15

pF

Interchannel Gain Mismatch

CD Left to Right

0.01

dB

Record Gain Amplifier - A/D

A

S

Step Size

0dB to 22.5dB

1.5

dB

Mixer Section

A

S

Step Size

+12dB to -34.5dB

1.5

dB

A

M

Mute Attenuation

86

dB

Analog to Digital Converters

Resolution

18

Bits

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