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LM4992 Datasheet(PDF) 4 Page - Texas Instruments

Part # LM4992
Description  420mW Stereo Cell Phone Audio Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM4992 Datasheet(HTML) 4 Page - Texas Instruments

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THS770012
SLOS669C
– FEBRUARY 2010 – REVISED JANUARY 2012
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Test conditions are at TA = +25°C, VS+ = +5V, VOCM = +2.5V, VOUT = 2VPP, RL = 400Ω differential, G = +12dB, differential input
and output, and input and output referenced to midsupply, unless otherwise noted. Measured using evaluation module as
discussed in Test Circuits section.
TEST
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
LEVEL(1)
f = 50MHz, 10MHz spacing
–97
dBc
C
Third-order intermodulation
f = 100MHz, 10MHz spacing
–100
dBc
C
distortion, Gain = +12dB, RL =
f = 150MHz, 10MHz spacing
–92
dBc
C
400
Ω, VOUT = 2VPP
f = 200MHz, 10MHz spacing
–81
dBc
C
RL = 20Ω
19.6
dBm
C
1dB compression point
f = 100MHz
RL = 400Ω
8.7
dBm
C
Output third-order intercept
At device outputs, RL = 400Ω, f = 100MHz
47
dBm
C
point
Input-referred voltage noise
f = 1MHz
1.5
nV/
√Hz
C
Ouput-referred voltage noise
f = 1MHz
6
nV/
√Hz
C
f = 50 MHz
9.5
dB
C
100
Ω differential
Noise figure
f = 100 MHz
10.7
dB
C
source
f = 200 MHz
12.3
dB
C
Overdrive recovery
Overdrive =
±0.5V
5
7.5
ns
B
Output balance error
f = 200MHz
-60
dB
C
Output impedance
f = 100MHz
4
Ω
C
DC PERFORMANCE
TA = +25°C, RL = 400Ω
11.65
11.9
12.15
dB
A
TA = +25°C, RL = 100Ω
11.4
11.6
11.85
dB
B
Gain (+12dB gain setting)
TA = –40°C to +85°C, RL = 400Ω
11.6
12.2
dB
B
TA = –40°C to +85°C, RL = 100Ω
11.6
12.2
dB
B
TA = +25°C
–20
±2
20
mV
A
Output offset
TA = –40°C to +85°C
–22.5
22.5
mV
B
TA = +25°C
36
60
dB
A
Common-mode rejection ratio
TA = –40°C to +85°C
35
dB
B
INPUT
Differential input resistance
85
100
115
Ω
A
Input common-mode range
Inputs shorted together, VOCM = 2.5V
2.25
2.75
V
A
OUTPUT
TA = +25°C
3.64
3.7
V
A
Each output with
Most positive output voltage
200
Ω to midsupply
TA = –40°C to +85°C
3.59
V
B
TA = +25°C
1.3
1.4
V
A
Each output with
Least positive output voltage
200
Ω to midsupply
TA = –40°C to +85°C
1.45
V
B
TA = +25°C
3.59
3.6
V
A
Each output with
Most positive output voltage
50
Ω to midsupply
TA = –40°C to +85°C
3.54
V
B
TA = +25°C
1.3
1.5
V
A
Each output with
Least positive output voltage
50
Ω to midsupply
TA = –40°C to +85°C
1.55
V
B
TA = +25°C, RL = 400Ω
4.4
4.8
VPP
B
Differential output voltage
TA = –40°C to +85°C, RL = 400Ω
4.2
VPP
B
TA = +25°C, RL = 10Ω
80
mA
B
Differential output current drive
TA = –40°C to +85°C, RL =10Ω
80
mA
B
4
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Copyright
© 2010–2012, Texas Instruments Incorporated
Product Folder Link(s): THS770012


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