LM4947TL/NOPB National Semiconductor, LM4947TL/NOPB Datasheet - Page 6

• Manufacturer Part Number: LM4947TL/NOPB
• Description: IC AUDIO SUBSYSTM 1.19W D 25USMD
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class Dr

Specifications of LM4947TL/NOPB

• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.19W x 1 @ 8 Ohm; 87mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, Depop, Differential Inputs, I²C, Mute, Shutdown, SPI, Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 25-MicroSMD
• Amplifier Class: D
• No. Of Channels: 3
• Output Power: 2.5W
• Supply Voltage Range: 2.7V To 5.5V
• Load Impedance: 32ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: SMD
• Rohs Compliant: Yes
• For Use With: LM4947TLEVAL - BOARD EVALUATION LM4947TL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4947TLTR

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PSRR
η
CMRR
XTALK
T
Symbol
WU
Power Supply Rejection Ratio
Loudspeaker out
Power Supply Rejection Ratio
R
Class D Efficiency
Common-Mode-Rejection Ratio
Crosstalk
Wake-Up Time from Shutdown
Volume Control Step Size Error
Digital Volume Range
Mute Attenuation
MONO_IN Input Impedance
R
OUT
IN
and L
and L
IN
OUT
Input Impedance
Parameter
V
R
All audio inputs terminated to GND;
output referred
BTL, Output Mode 1
BTL, Output Mode 3
BTL, Output Mode 5
BTL, Output Mode 7
V
R
All audio inputs terminated to GND;
output referred
SE, Output Mode 2
SE, Output Mode 4
SE, Output Mode 6
OCL, Output Mode 2
OCL, Output Mode 4
OCL, Output Mode 6
Output Mode 1, 3, 5
f = 217Hz, V
Mode 1, BTL, R
Headphone, P
f = 1kHz, OCL, Mode 4, R
Headphone, P
f = 1kHz, SE, Mode 4, R
C
C
Input referred maximum attenuation
Input referred maximum gain
Output Mode 1, 3, 5
Maximum gain setting
Maximum attenuation setting
RIPPLE
RIPPLE
L
L
B
B
= 8Ω, C
= 32Ω, C
= 2.2µF, OCL, R
= 2.2µF, SE, R
= 200mV
= 200mV
B
B
CM
= 2.2µF, BTL
= 2.2µF, BTL
O
O
= 1Vpp,
Conditions
L
= 12mW,
= 12mW,
PP
PP
= 8Ω
6
L
; f = 217Hz,
; f = 217Hz,
L
= 32Ω
= 32Ω
L
L
= 32Ω
= 32Ω
(Note 4)
Typical
-59.5
±0.2
–49
–58
–73
115
+18
100
79
78
79
80
78
71
71
83
74
74
86
90
87
12
LM4947
(Note 5)
Limits
–60.25
–58.75
17.25
18.75
125
14
75
8
dB (max)
dB (max)
kΩ (max)
kΩ (max)
dB (min)
dB (min)
dB (min)
kΩ (min)
kΩ (min)
(Limits)
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ms
ms
dB
%