lm4985tmx National Semiconductor Corporation, lm4985tmx Datasheet - Page 5

• Manufacturer Part Number: lm4985tmx
• Description: Stereo 135mw Low Noise Headphone Amplifier With Selectable Capacitively Coupled Or Output Capacitor-less Ocl Output And Digitally Controlled I2c V
• Manufacturer: National Semiconductor Corporation

I
I
V
V
P
THD+N
V
PSRR
Xtalk
DD
SD
SDIH
SDIL
O
ON
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics V
The following specifications apply for R
25˚C.
Supply Voltage (V
Storage Temperature
Input Voltage (IN1, IN2, OUT1,
OUT2, BYPASS, CNTGND, GND
pins relative to the V
Input Voltage (ADR, SDA, SCL
pins, relative to the I
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
Symbol
Quiescent Power Supply Current
Shutdown Current
Logic Voltage Input High
Logic Voltage Input Low
Output Power
Total Harmonic Distortion + Noise
Output Noise Voltage
Power Supply Rejection Ratio
Channel-to-channel Crosstalk
DD
2
, I
DD
CV
2
CV
pin)
DD
DD
pin)
Parameter
)
-0.3V to I
-0.3V to V
L
= 16Ω, f = 1kHz, and C
Internally Limited
−65˚C to +150˚C
2
DD
CV
(Notes 1, 2)
DD
DD
= 5V
+ 0.3V
+ 0.3V
2000V
V
Single-Channel no load OCL
Single-Channel no load C-CUPL
Dual-Channel no load OCL
Dual-Channel no load C-CUPL
V
THD ≤ 1%; f
R
R
R
R
R
R
R
R
V
V
f
f
P
P
IN
IN
6.0V
IN
SHUTDOWN
IN
RIPPLE
out
out
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
OCL
C-CUPL
OCL
C-CUPL
R
R
R
R
= 217Hz sinewave
= 1kHz sinewave
LOAD
LOAD
LOAD
LOAD
= 0V, I
= AC GND, A
= 40mW. OCL
= 50mW. C-CUPL
(Notes 1, 2)
= 16Ω OCL
= 16Ω C-CUPL
= 32Ω OCL
= 32Ω C-CUPL
= 16Ω OCL, P
= 16Ω C-CUPL, P
= 32Ω OCL, P
= 32Ω C-CUPL, P
= 200mVp-p (Note 9)
= 32Ω
= 32Ω
= 16Ω
= 16Ω
5
OUT
B
IN
= GND
= 4.7µF unless otherwise specified. Limits apply to T
Operating Ratings
Conditions
ESD Susceptibility (Note 5)
Junction Temperature
Thermal Resistance
Temperature Range
Supply Voltage
= 1kHz
= 0A
θ
T
V
I
V
2
JA
MIN
DD
CV
= 0dB, A-weighted
O
O
DD
≤ T
= 100mW
= 60mW
O
O
A
= 100mW
= 70mW
≤ T
MAX
(Note 6)
0.08
0.02
0.04
0.01
Typ
135
135
1.5
2.3
0.1
79
80
15
77
65
77
65
51
56
58
68
2
3
LM4985
1.7V ≤ I
−40˚C ≤ T
(Notes 7,
2.3V ≤ V
Limit
115
4.9
3.8
1.0
3.5
1.5
70
57
60
8)
2
CV
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CC
DD
109˚C/W
A
mA (max)
mW (min)
µA (max)
≤ 85˚C
dB (min)
≤ 5.5V
≤ 5.5V
(Limits)
V (max)
A
V (min)
150˚C
200V
Units
=
µV
dB
dB
%