Electrical Characteristics DV

The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for T

Symbol

Parameter

Conditions

LM4921

Units

(Limits)

Typical

Limit

(Note 6)

(Notes 7, 9)

DV

DD

Digital Power Supply Voltage

Note 8

3.0

V

AV

DD

Analog Power Supply Voltage

Note 8

3.0

V

DI

DD

Digital Power Supply Quiescent

Current

R

3.5

7.5

mA (max)

AI

DD

Analog Power Supply Quiescent

Current

R

5

9.0

mA (max)

I

SD

Total Shutdown Power Supply

Current

SHUTDOWN SPI bits1&2set to

logic 0,

SPI, M

1

uA(max)

I

SB

Standby Current

Analog and Digital together

All clocks off

15

uA

V

FS

Full-Scale Output Voltage

Gain set at max

2.6

V

P-P

THD+N

Total Harmonic Distortion + Noise

f

(Vol Cont = 11011, I

get 12mW at output)

0.05

%

P

O

Headphone Amplifier Output Power THD = (0.5%), f

26

mW (min)

PSRR

Power Supply Rejection Ratio

AV

V

52

dB (min)

SNR

Signal-to-Noise Ratio

f

A-weighted-f

79

dB

DR

Dynamic Range

f

A-weighted

81

dB

∆A

CH-CH

Channel-to-Channel Gain Mismatch f

0.06

dB

X

TALK

Channel-to-Channel Crosstalk

f

f

72

dB

Volume Control Range

Minimum Attenuation

Maximum Attenuation

0

-43.5

dB

dB

Volume Control Control Step Size

1.5

dB

Mute Attenuation

-100

dB

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