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Absolute Maximum Ratings (Note 10)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
6.0V
Storage Temperature
-65C to +150C
Input Voltage
0.3V to V
DD +0.3V
Power Dissipation (Note 11)
Internally limited
ESD Susceptibility (Note 12)
All pins except Pin 28
2500V
Pin 28
6500V
ESD Susceptibility (Note 13)
200V
Junction Temperature
150C
Soldering Information
Vapor Phase (60 sec.)
215C
Infrared (15 sec.)
220C
See AN-450 “Surface Mounting and their Effects on
Product Reliability” for other methods of soldering surface
mount devices.
θ
JC (typ) — LQA028A
3C/W
θ
JA (typ) — LQA028A
42C/W
θ
JC (typ) — MTC28
20C/W
θ
JA (typ) — MTC28
80C/W
θ
JC (typ) — MXA28A
2C/W
θ
JA (typ) — MXA28A (exposed
DAP) (Note 4)
41C/W
θ
JA (typ) — MXA28A (exposed
DAP) (Note 3)
54C/W
θ
JA (typ) — MXA28A (exposed
DAP) (Note 5)
59C/W
θ
JA (typ) — MXA28A (exposed
DAP) (Note 6)
93C/W
Operating Ratings
Temperature Range
T
MIN
≤ T
A
≤T
MAX
40C
≤TA ≤ 85C
Supply Voltage
2.7V
≤ V
DD
≤ 5.5V
Electrical Characteristics for Entire IC (Notes 7, 10)
The following specifications apply for V
DD = 5V and TA = 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4842
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
V
DD
Supply Voltage
2.7
V (min)
5.5
V (max)
I
DD
Quiescent Power Supply Current
V
IN = 0V, IO = 0A
15
30
mA (max)
I
SD
Shutdown Current
V
Shutdown = GND
0.7
2.0
A (max)
V
IH
VIN High on all Logic Inputs
0.8 x V
DD
V (min)
V
IL
VIN Low on all Logic Inputs
0.2 x V
DD
V (max)
TH
um
Un-Mute Threshold Voltage
V
Shutdown =VDD,
Gain 1st Stage = 1
22
10
40
mV
RMS
mV
RMS
Electrical Characteristics for Volume Attenuators (Notes 7, 10)
The following specifications apply for V
DD = 5V and TA = 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4842
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
C
RANGE
Attenuator Range
Gain with V
DCVol = 5.0V, No Load
±0.75
dB (max)
C
RANGE
Attenuator Range
Attenuation with V
DCVol = 0V (BM &
SE)
-75
dB (min)
A
M
Mute Attenuation
V
mute = 5V, Bridged Mode (BM)
-78
dB (min)
V
mute = 5V, Single-Ended Mode (SE)
-78
dB (min)
Electrical Characteristics for Single-Ended Mode Operation (Notes 7, 10)
The following specifications apply for V
DD = 5V and TA = 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4842
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
P
O
Output Power
THD+N = 1.0%; f = 1kHz; R
L =32
85
mW
THD+N = 10%;f=1 kHz; R
L =32
95
mW
LM4842
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