LM4832 datasheet(3/22 Pages) NSC

3 / 22 page

Electrical Characteristics for Entire IC(Notes 1, 2) (Continued)

The following specifications apply for V

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

Symbol

Parameter

Conditions

LM4832

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

AUDIO PATH

Output Power

THD = 1.0% (max),f=1 kHz, All

controls at 0dB

L =8Ω

250

mW (min)

L =32Ω

mW (min)

THD+N

Total Harmonic Distortion+Noise

All Controls at 0 dB, THD = 10%,f=1

kHz

L =8Ω

350

O = 200 mW, RL =8Ω

0.15

O = 75 mW, RL =32Ω

0.11

O = 1 Vrms, RL =10Ω

0.08

PSRR

Power Supply Rejection Ratio

B = 1 µF, f = 100 Hz, VRIPPLE = 100

mVrms, All Controls at 0 dB Setting

Mute Attenuation

f = 1 kHz, V

IN = 1V

−75

TALK

Cross Talk

O = 200 mW, RL =8Ω,

All controls at 0 dB setting,

f=1kHz

Left to Right

−85

Right to Left

−72

MICROPHONE PREAMP AND VOLUME CONTROL

Preamp Gain

0 dB Gain

−1, 1

+20 dB Gain

19, 21

+30 dB Gain

29, 31

Attenuator Range

Gain at +18 dB Setting

dB (max)

Attenuation at −42 dB Setting

−43

dB (min)

Step Size

0 dB to −42 dB

Step Size Error

0.4

dB (max)

SWING

Output Voltage Swing

f = 1 kHz, THD < 1.0%,R

L =1kΩ

1.7

rms

Input Referred Noise

A-Weighted, Attenuator at 0 dB

µV (min)

PSRR

Power Supply Rejection Ratio

f = 100 Hz, V

RIPPLE = 100 mVrms,

B =1µF

Mute Attenuation

−90

TALK

Cross Talk

Power Amp P

O =200 mW,f=1kHz

−90

THD+N

Total Harmonic Distortion Plus Noise

All controls at 0 dB,f=1 kHz, V

O =1V

0 dB Setting

0.03

+20 dB Gain

0.03

+30 dB Gain

0.04

2C BUS TIMING

MAX

Maximum Bus Frequency

400

kHz

START:HOLD

Start Signal: Hold Time before

Clock/Data Transitions

0.6

µs

D;SETUP

Data Setup Time

0.1

µs

C;HIGH

Minimum High Clock Duration

0.6

µs

C;LOW

Minimum Low Clock Duration

1.3

µs

STOP;SETUP

Stop Signal: Setup Time before

Clock/Data Transitions

0.6

µs

2C BUS INPUT AND OUTPUT

Input Low Voltage

1.5

V (max)

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