LM4855 datasheet(4/24 Pages) NSC

4 / 24 page

Electrical Characteristics (Notes 3, 8) (Continued)

The following specifications apply for V

DD= 5.0V, TA= 25˚C unless otherwise specified.

Symbol

Parameter

Conditions

LM4855

Units

(Limits)

Typical

(Note 5)

Limits

(Note 6)

PSRR

Power Supply Rejection Ratio

SPKR

OUT

RIPPLE = 200mVPP; f = 217Hz, CB =

1.0µF

All audio inputs terminated into 50

Ω;

Output referred Gain (BTL) = 12dB

Output Mode 1, 3, 5, 7

dB (min)

Power Supply Rejection Ratio

OUTand LOUT

RIPPLE = 200mVPP; f = 217Hz, CB =

1.0µF

All audio inputs terminated into 50

Ω;

Output referred Maximum gain setting

Output Mode 2, 3

dB (min)

Output Mode 4, 5

dB (min)

Output Mode 6, 7

dB (min)

Logic High Input Voltage

1.4

V (min)

V (max)

Logic Low Input Voltage

0.4

GND

V (max)

V (min)

Digital Volume Range (R

IN and

IN)

Input referred minimum gain

-34.5

-35.1

-33.9

dB (min)

dB (max)

Input referred maximum gain

12.0

11.4

12.6

dB (min)

dB (max)

Digital Volume Stepsize

1.5

Digital Volume Stepsize Error

±0.1

±0.6

dB ( max)

Phone_In_IHF Volume

BTL gain from Phone_In _IHF to

SPKR

OUT

11.4

12.6

dB (min)

dB (max)

Phone _In_IHF Mute Attenuation

Output Mode 2, 4, 6

dB (min)

Phone_In_IHF Input Impedance

Ω (min)

Ω (max)

Phone_In_HS Input Impedance

Maximum gain setting

37.5

62.5

Ω (min)

Ω (max)

Mininum gain setting

100

125

Ω (min)

Ω (max)

IN and LIN Input Impedance

Maximum gain setting

33.5

Ω (min)

Ω (max)

Mininum gain setting

100

125

Ω (min)

Ω (max)

Thermal Shutdown Temperature

170

150

˚C (min)

Enable Setup Time (ENB)

ns (min)

Enable Hold Time (ENB)

ns (min)

Enable Low Time (ENB)

ns (min)

Data Setup Time (DATA)

ns (min)

Data Hold Time (DATA)

ns (min)

Clock Setup Time (CLK)

ns (min)

Clock Logic High Time (CLK)

ns (min)

Clock Logic Low Time (CLK)

ns (min)

CLK

Clock Frequency

(min)

MHz (max)

LM4855 Folha de dados(PDF) 4 Page - National Semiconductor (TI)

LM4855 Folha de dados(HTML) 4 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Folha de dados Download

Ligação URL