Audio Amplifier Electrical Characteristics AV

2) (Continued)

The following specifications apply for the circuit shown in Figure 1 with all programmable gain set at 0dB, unless otherwise

specified. Limits apply for T

Symbol

Parameter

Conditions

LM4934

Units

(Limits)

Typical

(Note 6)

Limits

(Notes

7, 8)

Xtalk

Crosstalk

Loudspeaker; P

f = 1kHz

–84

dB

Headphone; P

f = 1kHz; SE

–85

dB

Headphone; P

f = 1kHz; OCL

–60

dB

T

WU

Wake-Up Time

C

35

ms

C

85

ms

Audio Amplifier Electrical Characteristics AV

2)

The following specifications apply for the circuit shown in Figure 1 with all programmable gain set at 0dB, unless otherwise

specified. Limits apply for T

Symbol

Parameter

Conditions

LM4934

Units

(Limits)

Typical

(Note 6)

Limits

(Notes

7, 8)

I

DD

Supply Current

V

All Amps On - DAC

24

mA (max)

Headphone Mode Only

5.8

mA

Stereo Speaker Mode Only

17

mA

Mono Speaker Mode Only

7

mA

DAC Off, All Amps On

19

mA

I

SD

Shutdown Current

1.6

µA

P

O

Output Power

Speaker; THD = 1%;

f = 1kHz, 8

Ω BTL

1.2

W

Headphone; THD = 1%;

f = 1kHz, 32

Ω SE

80

mW

Earpiece; THD = 1%;

f = 1kHz, 32

Ω BTL

175

mW

V

FS DAC

Full Scale DAC Output

2.4

Vpp

THD+N

Total Harmonic Distortion

Speaker; P

f = 1kHz, 8

Ω BTL

0.03

%

Headphone; P

f = 1kHz, 32

Ω SE

0.01

%

Earpiece; P

f = 1kHz, 32

Ω BTL; CD4 = 0

0.04

%

Line Out; V

Ω SE

0.003

%

V

OS

Offset Voltage

Speaker

8

mV

Earpiece

8

mV

HP (OCL)

8

mV

∈

O

Output Noise

A = weighted; 0dB gain;

See Table 1

Table 1

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