Absolute Maximum Ratings (Note 1)

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 2)

2000V

pin 3

750V

ESD Susceptibility (Note 3)

200V

pin 3

100V

Junction Temperature

150˚C

Soldering Information

LQFP Package

Vapor Phase (60 sec.)

215˚C

Infrared (15 sec.)

220˚C

θ

74˚C/W

Operating Ratings

Temperature Range

T

MIN

≤ T

A

≤ T

MAX (Note 4)

−40˚C

≤ T

A

≤ 85˚C

Analog Supply Range

4.2V

≤ AV

DD

≤ 5.5V

Digital Supply Range

3.0V

≤ DV

DD

≤ 5.5V

Sampling Frequency (Fs) = 48 kHz, single codec configuration, (primary mode) unless otherwise noted. Limits apply for T

25˚C. The reference for 0 dB is 1 Vrms unless otherwise specified.

Symbol

Parameter

Conditions

LM4546B

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

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

DV

34

mA

DV

19

mA

A

IDD

Analog Quiescent Power Supply

Current

53

mA

I

DSD

Digital Shutdown Current

PR543210 = 111111

19

µA

I

ASD

Analog Shutdown Current

PR543210 = 111111

70

µA

V

REF

Reference Voltage

No pullup resistor

2.16

V

PSRR

Power Supply Rejection Ratio

40

dB

Analog Loopthrough Mode (Note 8)

Dynamic Range (Note 9)

CD Input to Line Output, -60 dB Input

THD+N

97

90

dB (min)

THD

Total Harmonic Distortion

V

Ω

0.013

0.02

% (max)

Analog Input Section

V

IN

Line Input Voltage

LINE_IN, AUX, CD, VIDEO, PC_BEEP,

PHONE

1

Vrms

V

IN

Mic Input with 20 dB Gain

0.1

Vrms

V

IN

Mic Input with 0 dB Gain

1

Vrms

Xtalk

Crosstalk

CD Left to Right

-95

dB

Z

IN

Input Impedance (Note 9)

All Analog Inputs

40

10

k

Ω (min)

C

IN

Input Capacitance(Note 9)

3.7

7

pF

Interchannel Gain Mismatch

CD Left to Right

0.1

dB

Record Gain Amplifier - ADC

A

S

Step Size

0 dB to 22.5 dB

1.5

dB

A

M

Mute Attenuation (Note 9)

86

dB

Mixer Section

A

S

Step Size

+12 dB to -34.5 dB

1.5

dB

A

M

Mute Attenuation

86

dB

www.national.com

3