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PDF NCP2820 Data sheet ( Hoja de datos )
| Número de pieza | NCP2820 | |
| Descripción | 2.65W Filterless Class-D Audio Power Amplifier | |
| Fabricantes | ON Semiconductor | |
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NCP2820 Series
2.65 W Filterless Class-D
Audio Power Amplifier
The NCP2820 is a cost−effective mono Class−D audio power
amplifier capable of delivering 2.65 W of continuous average power
to 4.0 W from a 5.0 V supply in a Bridge Tied Load (BTL)
configuration. Under the same conditions, the output power stage can
provide 1.4 W to a 8.0 W BTL load with less than 1% THD+N. For
cellular handsets or PDAs it offers space and cost savings because no
output filter is required when using inductive tranducers. With more
than 90% efficiency and very low shutdown current, it increases the
lifetime of your battery and drastically lowers the junction
temperature.
The NCP2820 processes analog inputs with a pulse width
modulation technique that lowers output noise and THD when
compared to a conventional sigma−delta modulator. The device allows
independent gain while summing signals from various audio sources.
Thus, in cellular handsets, the earpiece, the loudspeaker and even the
melody ringer can be driven with a single NCP2820. Due to its low
42 mV noise floor, A−weighted, a clean listening is guaranteed no
matter the load sensitivity. With zero pop and click noise performance
NCP2820A turns on within 1 ms versus 9 ms for NCP2820 version.
Features
• Optimized PWM Output Stage: Filterless Capability
• Efficiency up to 90%
Low 2.5 mA Typical Quiescent Current
• Large Output Power Capability: 1.4 W with 8.0 W Load (CSP) and
THD + N < 1%
• Ultra Fast Start−up Time: 1 ms for NCP2820A Version
• High Performance, THD+N of 0.03% @ Vp = 5.0 V,
RL = 8.0 W, Pout = 100 mW
• Excellent PSRR (−65 dB): No Need for Voltage Regulation
• Surface Mounted Package 9−Pin Flip−Chip CSPand UDFN8
• Fully Differential Design. Eliminates Two Input Coupling Capacitors
• Very Fast Turn On/Off Times with Advanced Rising and Falling
Gain Technique
• External Gain Configuration Capability
• Internally Generated 250 kHz Switching Frequency
• “Pop and Click” Noise Protection Circuitry
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These are Pb−Free Devices
Applications
• Cellular Phone
• Portable Electronic Devices
• PDAs and Smart Phones
• Portable Computer
http://onsemi.com
MARKING
DIAGRAMS
1
9−PIN FLIP−CHIP CSP
FC SUFFIX
CASE 499AL
A1
C1
xx = AQ for NCP2820
= BD for NCP2820A
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
A3
8
1
8 PIN UDFN 2x2.2
MU SUFFIX
CASE 506AV
1
xx MG
xx = ZB for NCP2820
= AT for NCV2820
M = Date Code
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information on page 19 of
this data sheet.
Audio
Input
from
DAC
Ri
Ri
Input from
Microcontroller
Ri
1.6 mm
Ri
VP
INP
INM
SD
Cs
OUTM
OUTP
GND
Cs
3.7 mm
© Semiconductor Components Industries, LLC, 2013
December, 2013 − Rev. 8
1
Publication Order Number:
NCP2820/D
1 page  
NCP2820 Series
ELECTRICAL CHARACTERISTICS (Limits apply for TA = +25°C unless otherwise noted) (NCP2820FCT1G & NCP2820FCT2G)
Characteristic
Symbol
Conditions
Min Typ Max Unit
Efficiency
−
Total Harmonic Distortion + Noise
THD+N
RL = 8.0 W, f = 1.0 kHz
Vp = 5.0 V, Pout = 1.2 W
Vp = 3.6 V, Pout = 0.6 W
VRpL==54.0.0VW, ,Pfo=ut
1.0 kHz
= 2.0 W
Vp = 3.6 V, Pout = 1.0 W
Vp = 5.0 V, RL = 8.0 W,
f = 1.0 kHz, Pout = 0.25 W
Vp = 3.6 V, RL = 8.0 W,
f = 1.0 kHz, Pout = 0.25 W
− 91 −
− 90 −
− 82 −
− 81 −
− 0.05 −
− 0.09 −
%
%
Common Mode Rejection Ratio
CMRR
Vp from 2.5 V to 5.5 V
Vic = 0.5 V to Vp − 0.8 V
Vp = 3.6 V, Vic = 1.0 Vpp
f = 217 Hz
f = 1.0 kHz
− −62 −
− −56 −
− −57 −
dB
Power Supply Rejection Ratio
PSRR
Vp_ripple_pk−pk = 200 mV, RL = 8.0 W,
Inputs AC Grounded
Vp = 3.6 V
f = 217 kHz
f = 1.0 kHz
− −62 −
− −65 −
dB
ELECTRICAL CHARACTERISTICS (Limits apply for TA = +25°C unless otherwise noted) (NCP2820MUTBG & NCV2820MUTBG)
Characteristic
Symbol
Conditions
Min Typ Max Unit
Operating Supply Voltage
Supply Quiescent Current
Shutdown Current
Vp
Idd
Isd
Shutdown Voltage High
Shutdown Voltage Low
Switching Frequency
Gain
Output Impedance in Shutdown Mode
Resistance from SD to GND
Vsdih
Vsdil
Fsw
G
ZSD
Rs
TA = −40°C to +85°C
Vp = 3.6 V, RL = 8.0 W
Vp = 5.5 V, No Load
Vp from 2.5 V to 5.5 V, No Load
TA = −40°C to +85°C
Vp = 4.2 V
TA = +25°C
TA = +85°C
Vp = 5.5 V
TA = +25°C
TA = +85°C
-
-
Vp from 2.5 V to 5.5 V
TA = −40°C to +85°C
RL = 8.0 W
-
−
2.5 − 5.5
− 2.15 −
− 2.61 −
V
mA
− − 3.8
mA
− 0.42 0.8
− 0.45 2.0
mA
− 0.8 1.5
− 0.9 −
1.2 − − V
− − 0.4 V
180 240 300 kHz
285 kW
Ri
−
−
300 kW
Ri
20
300
315 kW
Ri
−
−
V
V
kW
kW
Output Offset Voltage
Turn On Time
Turn Off Time
Thermal Shutdown Temperature
Vos
Ton
Toff
Tsd
Vp = 5.5 V
Vp from 2.5 V to 5.5 V
Vp from 2.5 V to 5.5 V
−
− 6.0 − mV
− 1.0 − ms
− 1.0 − ms
− 160 −
°C
Output Noise Voltage
Vn Vp = 3.6 V, f = 20 Hz to 20 kHz
mVrms
no weighting filter
− 65 −
with A weighting filter
− 42 −
http://onsemi.com
5
5 Page 
NCP2820 Series
TYPICAL CHARACTERISTICS
2.0
RL = 8 W
f = 1 kHz
1.5
NCP2820 mDFN
THD+N = 10%
NCP2820 CSP
1.0 THD+N = 10%
3.0
RL = 4 W
2.5 f = 1 kHz
2.0 THD+N = 10%
1.5
0.5
0
2.5
NCP2820 CSP
THD+N = 1%
NCP2820 mDFN
THD+N = 3%
3.0 3.5 4.0 4.5
POWER SUPPLY (V)
5.0
1.0
0.5
0
2.5
THD+N = 1%
3.0 3.5 4.0 4.5
POWER SUPPLY (V)
5.0
Figure 21. Output Power vs. Power Supply
RL = 8 W @ f = 1 kHz
10
Figure 22. Output Power vs. Power Supply
RL = 4 W @ f = 1 kHz
10
1.0
Vp = 2.5 V
0.1 Vp = 3.6 V
Vp = 5 V
1.0
Vp = 2.5 V
Vp = 3.6 V
0.1
Vp = 5 V
0.0110
−20
100
1000
10000
FREQUENCY (Hz)
100000 0.0110
Figure 23. THD+N vs. Frequency
RL = 8 W, Pout = 250 mW @ f = 1 kHz
−20
100
1000
10000
FREQUENCY (Hz)
100000
Figure 24. THD+N vs. Frequency
RL = 4 W, Pout = 250 mW @ f = 1 kHz
−30 −30
−40
−50 Vp = 5 V
−40
−50 Vp = 5 V
−60 Vp = 3.6 V
−60 Vp = 3.6 V
−70
−8010
Inputs to GND
RL = 8 W
100
1000
10000
FREQUENCY (Hz)
100000
Figure 25. PSRR vs. Frequency
Inputs Grounded, RL = 8 W, Vripple = 200 mvpkpk
−70
−8010
Inputs to GND
RL = 4 W
100
1000
10000
FREQUENCY (Hz)
100000
Figure 26. PSRR vs. Frequency
Inputs grounded, RL = 4 W, Vripple = 200 mVpkpk
http://onsemi.com
11
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet NCP2820.PDF ] | |
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