LM4856LQBD National Semiconductor, LM4856LQBD Datasheet - Page 5

• Manufacturer Part Number: LM4856LQBD
• Description: BOARD EVALUATION LM4856LQ
• Manufacturer: National Semiconductor
• Series: Boomer®r

Specifications of LM4856LQBD

• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.5W x 1 @ 4 Ohm; 60mW x 2 @ 32 Ohm
• Voltage - Supply: 2.6 V ~ 5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: LM4856
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

I
I
V
P
THD+N
N
PSRR
V
V
DD
SD
Symbol
OS
O
OUT
IH
IL
Electrical Characteristics
The following specifications apply for V
Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Total Harmonic Distortion Plus
Noise
Output Noise
Power Supply Rejection Ratio
SPKR
Power Supply Rejection Ratio
R
Logic High Input Voltage
Logic Low Input Voltage
OUT
and L
OUT
OUT
Parameter
DD
= 3.0V, T
(Notes 2, 8)
Output modes 1, 2, 3, 4, 5, 6, 7
V
Output modes 1, 2, 3, 4, 5, 6, 7
V
Output mode 0
V
SPKR
THD+N = 1%; f = 1kHz, LM4856LQ
SPKR
THD+N = 1%; f = 1kHz
R
THD+N = 0.5%; f = 1kHz
SPKR
f = 20Hz to 20kHz
P
R
f = 20Hz to 20kHz
P
A-weighted (Note 10)
V
C
All audio inputs terminated into 50Ω;
Output referred Gain (BTL) = 12dB
Output Mode 1, 3, 5, 7
V
C
All audio inputs terminated into 50Ω;
Output referred Maximum gain setting
Output Mode 2, 3
Output Mode 4, 5
Output Mode 6, 7
IN
IN
IN
OUT
OUT
RIPPLE
RIPPLE
OUT
OUT
B
B
= 1.0µF
= 1.0µF
= 0V; No loads
= 0V; Loaded (Figure 1)
= 0V
= 150mW; R
= 10mW; R
A
OUT
OUT
and L
OUT
and L
= 25˚C unless otherwise specified.
= 200mV
= 200mV
; R
; R
OUT
OUT
L
L
= 4Ω
= 8Ω
Conditions
; R
L
PP
PP
5
L
L
= 32Ω
; f = 217Hz,
; f = 217Hz,
= 32Ω
= 8Ω
(Note 5)
Typical
430
340
6.5
0.1
5.0
0.5
0.5
22
29
58
68
60
56
7
LM4856
0.7 x V
(Notes 6,
Limits
GND
V
300
11)
2.0
0.4
10
11
40
18
55
60
55
52
DD
DD
www.national.com
mA (max)
mA (max)
mV (max)
mW (min)
mW (min)
µA (max)
dB (min)
dB (min)
dB (min)
dB (min)
(Limits)
V (max)
V (max)
V (min)
V (min)
Units
mW
µV
%
%