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PDF LM4890 Data sheet ( Hoja de datos )
| Número de pieza | LM4890 | |
| Descripción | 0.8W Mono Class AB Audio Amplifier | |
| Fabricantes | ETC | |
| Logotipo |  |
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CM4890/LM4890
0.8W Mono Class AB Audio Amplifier
General Description: CM4890 is an audio amplifier of class AB，when connected to a
4.5V ，THD+N less than 10%，will deliver0.8W to 4Ω load or 0.5W to a 8Ω load .
The CM4890 is unity-gain stable and can be configured by external gain-setting
resistors, It features a low-power consumption shutdown mode with very low shutdown
current, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and
pops” during device turn-on and turn-off.
Features:
1. Power output at 4.2V , 4Ω load, THD+N<10%，is 0.8W.
2. Power out ut at 4.2V , 8Ω load, THD+N<10%，is 0.5W.
3. Operating supply voltage: VDD =2.7V~4.5V。
4. Typical shutdown current: 0.8uA。
5. Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions
6.MSOP8 packages.
Electrical Characteristics:
Symbol
Parameter
Conditions
Typical
Limit
Units
Quiescent power
IDD VIN=0V,IO=0A,No Load
supply current
ISD
VSDIH
VSDIL
Shutdown current
Shutdown voltage
input high
Shutdown voltage
input low
VSD= VDD
VDD=4.2V
VDD=4.2 V
VOS Output offset voltage
VIN=0V, No Load
Output power (8 Ω
load)
THD+N=10%(max);
PO Output power (4 Ω
f=1kHz
load)
TW U
THD+N
PSRR
Wake-up time
Total harmonic
distortion + noise
Power supply rejection
ratio
PO=0.5Wrms;f=1kHz
V ripple=200mV
2.5
0.2
2.5
2.0
30
0.5
0.8
100
0.1
-63 (217Hz)
-77 (1kHz)
15
4.0
50
1.0
-55
mA
µA
V
V
mV
W
ms
%
dB
Free Datasheet http://www.Datasheet4U.com
1 page | ||
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| PDF Descargar | [ Datasheet LM4890.PDF ] | |
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