LM4857ITLBD National Semiconductor, LM4857ITLBD Datasheet - Page 9

• Manufacturer Part Number: LM4857ITLBD
• Description: BOARD EVALUATION LM4857ITL
• Manufacturer: National Semiconductor
• Series: Boomer®r

Specifications of LM4857ITLBD

• Amplifier Type: Class AB
• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.6W x 2 @ 4 Ohm; 75mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: LM4857
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Xtalk
T
t
t
t
t
1
2
3
4
Symbol
Symbol
Symbol
WU
Audio Amplifier Electrical Characteristics V
The following specifications apply for V
Volume Control Electrical Characteristics
The following specifications apply for V
Control Interface Electrical Characteristics
The following specifications apply for V
apply for T
Crosstalk
Wake-up Time
Stereo Volume Control Range
Mono Volume Control Range
Volume Control Step Size
Volume Control Step Size
Error
Stereo Channel to Channel
Gain Mismatch
Mute Attenuation
L
M
SCL period
SDA Set-up Time
SDA Stable Time
Start Condition Time
IN
IN
A
and R
= 25˚C.
Input Impedance
IN
Parameter
Parameter
Parameter
Input Impedance
DD
DD
DD
LD5 = RD5 = 0
Loudspeaker; P
f = 1kHz
Headphone; P
f = 1kHz
CD5 = 0; C
CD5 = 1; C
maximum gain setting
minimum gain setting
maximum gain setting
minimum gain setting
Mode 12, V
Headphone
Line Out
maximum gain setting
minimum gain setting
maximum gain setting
minimum gain setting
= 3.0V, unless otherwise specified. Limits apply for T
= 5.0V and V
= 5V and V
B
B
in
DD
= 2.2µF
= 2.2µF
= 1V
DD
O
= 3V and 2.5V ≤ I
Conditions
Conditions
Conditions
O
= 10mW;
= 200mW;
= 3.0V, unless otherwise specified. Limits apply for T
RMS
9
(Notes 1, 2)
(Notes 1, 2)
DD
2
CV
= 3.0V
DD
≤ 5.5V, unless otherwise specified. Limits
(Note 6)
(Note 6)
(Note 6)
Typical
Typical
Typical
+/-0.2
(Notes 1, 2) (Continued)
-40.5
-34.5
33.5
140
100
1.5
0.3
82
82
80
12
85
85
20
98
6
LM4857
LM4857
LM4857
A
= 25˚C.
Limits (Notes
Limits (Notes
Limits (Notes
+/-0.5
7, 8)
7, 8)
7, 8)
11.5
12.5
125
123
100
100
-41
-40
-35
-34
5.5
6.5
2.5
25
42
75
15
25
73
0
A
= 25˚C.
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dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
kΩ (max)
kΩ (max)
kΩ (max)
kΩ (max)
dB (min)
dB (min)
dB (min)
dB (min)
kΩ (min)
kΩ (min)
kΩ (min)
kΩ (min)
(Limits)
(Limits)
(Limits)
µs (min)
ns (min)
ns (min)
ns (min)
Units
Units
Units
dB
dB
ms
ms
dB
dB
dB
dB