LM4855LQBD National Semiconductor, LM4855LQBD Datasheet - Page 4

• Manufacturer Part Number: LM4855LQBD
• Description: BOARD EVALUATION LM4855LQ
• Manufacturer: National Semiconductor
• Series: Boomer®r

Specifications of LM4855LQBD

• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.5W x 1 @ 4 Ohms; 115mW x 2 @ 32 Ohms
• Voltage - Supply: 2.6 V ~ 5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: LM4855
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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PSRR
V
V
t
t
t
t
t
t
t
t
t
f
SD
ES
EH
EL
DS
DH
CS
CH
CL
CLK
Symbol
IH
IL
Electrical Characteristics
The following specifications apply for V
Power Supply Rejection Ratio
SPKR
Power Supply Rejection Ratio
R
Logic High Input Voltage
Logic Low Input Voltage
Digital Volume Range (R
L
Digital Volume Stepsize
Digital Volume Stepsize Error
Phone_In_IHF Volume
Phone _In_IHF Mute Attenuation
Phone_In_IHF Input Impedance
Phone_In_HS Input Impedance
R
Thermal Shutdown Temperature
Enable Setup Time (ENB)
Enable Hold Time (ENB)
Enable Low Time (ENB)
Data Setup Time (DATA)
Data Hold Time (DATA)
Clock Setup Time (CLK)
Clock Logic High Time (CLK)
Clock Logic Low Time (CLK)
Clock Frequency
IN
OUT
IN
)
and L
and L
OUT
IN
OUT
Parameter
Input Impedance
IN
and
DD
= 5.0V, T
(Notes 3, 8) (Continued)
V
1.0µF
All audio inputs terminated into 50Ω;
Output referred Gain (BTL) = 12dB
Output Mode 1, 3, 5, 7
V
1.0µF
All audio inputs terminated into 50Ω;
Output referred Maximum gain setting
Output Mode 2, 3
Output Mode 4, 5
Output Mode 6, 7
Input referred minimum gain
Input referred maximum gain
BTL gain from Phone_In _IHF to
SPKR
Output Mode 2, 4, 6
Maximum gain setting
Mininum gain setting
Maximum gain setting
Mininum gain setting
RIPPLE
RIPPLE
OUT
A
= 25˚C unless otherwise specified.
= 200mV
= 200mV
Conditions
PP
PP
4
; f = 217Hz, C
; f = 217Hz, C
B
B
=
=
(Note 5)
Typical
-34.5
±
12.0
33.5
100
100
170
1.5
57
62
57
54
12
80
20
50
0.1
LM4855
(Note 6)
Limits
GND
-35.1
-33.9
11.4
12.6
±
11.4
12.6
37.5
62.5
V
125
125
150
1.4
0.4
DC
54
59
54
51
72
15
25
75
25
42
75
20
20
30
20
20
20
50
50
10
0.6
DD
MHz (max)
dB ( max)
dB (max)
dB (max)
dB (max)
kΩ (max)
kΩ (max)
kΩ (max)
kΩ (max)
kΩ (max)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
kΩ (min)
kΩ (min)
kΩ (min)
kΩ (min)
kΩ (min)
(Limits)
˚C (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
V (max)
V (max)
V (min)
V (min)
Units
(min)
dB