參數(shù)資料
型號(hào)： LM4835MTE/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻控制
英文描述： 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28
封裝： TSSOP-28
文件頁(yè)數(shù)： 23/28頁(yè)
文件大小： 917K
代理商： LM4835MTE/NOPB
Electrical Characteristics for Single-Ended Mode Operation (Continued)
(Notes 8, 12) The following specifications apply for V
DD = 5V. Limits apply for TA = 25C.
Symbol
Parameter
Conditions
LM4835
Units
(Limits)
Typical
Limit
SNR
Signal to Noise Ratio
P
OUT =75 mW, R L =32
, A-Wtd
Filter
102
dB
X
talk
Channel Separation
f=1kHz, C
B = 1.0 F
65
dB
Electrical Characteristics for Bridged Mode Operation
(Notes 8, 12) The following specifications apply for V
DD = 5V, unless otherwise noted. Limits apply for TA = 25C.
Symbol
Parameter
Conditions
LM4835
Units
(Limits)
Typical
Limit
V
OS
Output Offset Voltage
V
IN = 0V
5
30
mV (max)
P
O
Output Power
THD+N= 1.0%; f=1kHz; R
L =3
(Notes 9, 11)
2.2
W
THD+N= 1.0%; f=1kHz; R
L =4
(Notes 10, 11)
2W
THD = 0.5% (max);f = 1 kHz;
R
L =8
1.1
1.0
W (min)
THD+N = 10%;f = 1 kHz; R
L =8
1.5
W
THD+N
Total Harmonic Distortion+Noise
P
O = 1W, 20 Hz< f < 20 kHz,
R
L =8
,A
VD =2
0.3
%
P
O = 340 mW, RL =32
1.0
%
PSRR
Power Supply Rejection Ratio
C
B = 1.0 F, f = 120 Hz,
V
RIPPLE = 200 mVrms; RL =8
74
dB
SNR
Signal to Noise Ratio
V
DD = 5V, POUT = 1.1W, RL =8
,
A-Wtd Filter
93
dB
X
talk
Channel Separation
f=1kHz, C
B = 1.0 F
70
dB
Note 3: The
θJA given is for an MXA28A package whose exposed-DAP is soldered to an exposed 2in 2 piece of 1 ounce printed circuit board copper.
Note 4: The
θJA given is for an MXA28A package whose exposed-DAP is soldered to a 2in2 piece of 1 ounce printed circuit board copper on a bottom side layer
through 21 8mil vias.
Note 5: The
θJA given is for an MXA28A package whose exposed-DAP is soldered to an exposed 1in 2 piece of 1 ounce printed circuit board copper.
Note 6: The
θJA given is for an MXA28A package whose exposed-DAP is not soldered to any copper.
Note 7: The given
θJA is for an LM4835 packaged in an LQA24A with the exposed-DAP soldered to an exposed 2in 2 area of 1oz printed circuit board copper.
Note 8: All voltages are measured with respect to the ground pins, unless otherwise specified. All specifications are tested using the typical application as shown
Note 9: When driving 3
loads and operating on a 5V supply, the LM4835MTE must be mounted to the circuit board and forced-air cooled.
Note 10: When driving 4
loads and operating on a 5V supply, the LM4835MTE must be mounted to the circuit board.
Note 11: When driving a 3
or 4 loads and operating on a 5V supply, the LM4835LQ must be mounted to the circuit board that has a minimum of 2.5in 2 of
exposed, uninterrupted copper area connected to the LLP package’s exposed DAP.
Note 12: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 13: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θ JA, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX TA )/θJA. For the LM4835LQ and LM4835MT, TJMAX = 150C, and the typical junction-to-ambient thermal
resistance, when board mounted, is 80C/W for the MTC28 package and 42C/W for the LM4835LQ package.
Note 14: Human body model, 100pF discharged through a 1.5k
resistor.
Note 15: Machine Model, 220pF–240pF discharged through all pins.
Note 16: Typicals are measured at 25C and represent the parametric norm.
Note 17: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
LM4835
www.national.com
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