NCP2993FCT2G [ONSEMI]
Audio Power Amplifier, 1.3 W, with Selectable Fast Turn-On Time;
| 型号： | NCP2993FCT2G |
| 厂家： | 
ONSEMI |
| 描述： | Audio Power Amplifier, 1.3 W, with Selectable Fast Turn-On Time 放大器 商用集成电路 |
| 文件： | 总13页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCP2993
Audio Power Amplifier, 1.3 W,
with Selectable Fast Turn-On
Time
The NCP2993 is an audio power amplifier designed for portable
communication device applications such as mobile phone
applications. The NCP2993 is capable of delivering 1.3 W of
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MARKING
DIAGRAM
continuous average power to an 8.0ꢀ ꢁ BTL load from a 5.0 V power
supply, and 1.1 W to a 4.0 ꢁ BTL load from a 3.6 V power supply.
The NCP2993 provides high quality audio while requiring few
external components and minimal power consumption. It features a low
−power consumption shutdown mode, which is achieved by driving the
SHUTDOWN pin with logic low.
WLCSP9
FC SUFFIX
CASE 499BM
2993
AYWW
G
The NCP2993 contains circuitry to prevent from “pop and click” noise
that would otherwise occur during turn−on and turn−off transitions. It is
a zero pop noise device when a single ended or a differential audio input
is used.
For maximum flexibility, the NCP2993 provides an externally
controlled gain (with resistors). In addition, it integrates 2 different
Turn On times (15 ms or 30 ms) adjustable with the TON pin.
Due to its superior PSRR, it can be directly connected to the
battery, saving the use of an LDO.
2993
A
Y
WW
G
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
This device is available in a 9−Pin Flip−Chip CSP package with a
0.4mm pitch (Lead−Free).
A1
A2
A3
INM
OUTA
INP
Features
B1
B2
B3
VP
• 1.3 W to an 8.0 ꢁ BTL Load from a 5.0 V Power Supply
VM
TON
• Best−in−Class PSRR: up to −88 dB, Direct Connection to the
C1
C2
C3
Battery
• Zero Pop Noise Signature with a Single Ended Audio Input
• Ultra Low Current Shutdown Mode: 10 nA
• 2.5 V−5.5 V Operation
BYPASS OUTB SHUTDOWN
(Top View)
• External Gain Configuration Capability
• External Turn−on Time Configuration Capability: 15 ms or 30 ms
• Thermal Overload Protection Circuitry
• This is a Pb−Free Device*
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Typical Applications
• Portable Electronic Devices
• PDAs
• Wireless Phones
*For additional information on our Pb−Free strategy and soldering details, please
downloadthe ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2011
1
Publication Order Number:
November, 2011 − Rev. 1
NCP2993/D
NCP2993
Rf
24 kꢁ
V
p
Cs
1 ꢂ F
Ci
Ri
INM
INP
V
p
AUDIO
INPUT
-
+
OUTA
100 nF 24 kꢁ
R1
20 kꢁ
V
p
8ꢁ
R2
20 kꢁ
-
+
BYPASS
OUTB
C
bypass
1 ꢂ F
SHUTDOWN
SHUTDOWN
CONTROL
TON
VM
Connect to V or GND
p
Figure 1. Typical Audio Amplifier Application Circuit with Single Ended Input
Rf
24 kꢁ
V
p
Ci
Ri
Cs
1 ꢂ F
+
100 nF 24 kꢁ
INM
INP
V
p
-
+
OUTA
AUDIO
INPUT
Ci
Ri
R1
20 kꢁ
V
p
−
8ꢁ
100 nF 24 kꢁ
24 kꢁ
R2
20 kꢁ
Rf
-
+
BYPASS
OUTB
C
bypass
1 ꢂ F
SHUTDOWN
TON
SHUTDOWN
CONTROL
VM
Connect to V or GND
p
Figure 2. Typical Audio Amplifier Application Circuit with a Differential Input
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NCP2993
PIN DESCRIPTION
Pin
Name
Type
Description
Negative input of the first amplifier, receives the audio input signal. Connected to the feedback
A1
INM
I
resistor R and to the input resistor R .
f
in
A2
A3
B1
B2
OUTA
INP
O
I
Negative output of the NCP2993. Connected to the load and to the feedback resistor Rf.
Positive input of the first amplifier, receives the common mode voltage.
Analog Ground.
VM
I
TON
I
TON pin selects 2 different Turn On times:
TON = GND −> 30 ms
TON = VP −> 15 ms
B3
C1
C2
C3
VP
I
I
Positive analog supply of the cell. Range: 2.5 V−5.5 V.
BYPASS
OUTB
Bypass capacitor pin which provides the common mode voltage (Vp/2).
Positive output of the NCP2993. Connected to the load.
O
I
SHUTDOWN
The device enters in shutdown mode when a low level is applied on this pin.
MAXIMUM RATINGS (Note 1)
Rating
Symbol
Value
Unit
Supply Voltage
V
6.0
V
−
p
Operating Supply Voltage
Input Voltage
Op Vp
2.5 to 5.5 V
V
in
−0.3 to V +0.3
V
CC
Power Dissipation (Note 2)
Operating Ambient Temperature
Max Junction Temperature
Storage Temperature Range
Pd
Internally Limited
−40 to +85
150
−
T
A
°C
°C
°C
°C/W
V
T
J
T
stg
−65 to +150
(Note 3)
Thermal Resistance Junction−to−Air
R
ꢃ
JA
ESD Protection
Human Body Model (HBM) (Note 4)
Machine Model (MM) (Note 5)
−
2000
200
Latchup Current @ T = 85°C (Note 6)
−
100
mA
A
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
RecommendedOperating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at T = +25°C.
A
2. The thermal shutdown set to 160°C (typical) avoids irreversible damage on the device due to power dissipation.
2
3. The R
is highly dependent of the PCB Heatsink area. For example, R
can equal 195°C/W with 50 mm total area and also 135°C/W with
ꢃ
ꢃ
JA
JA
2
500 mm . The bumps have the same thermal resistance and all need to be connected to optimize the power dissipation.
4. Human Body Model, 100 pF discharge through a 1.5 kꢁ resistor following specification JESD22/A114.
5. Machine Model, 200 pF discharged through all pins following specification JESD22/A115.
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NCP2993
ELECTRICAL CHARACTERISTICS Limits apply for T between −40°C to +85°C (Unless otherwise noted).
A
Min
Max
(Note 6)
(Note 6)
Characteristic
Symbol
Conditions
Typ
Unit
V = 2.5 V, No Load
V = 5.0 V, No Load
p
−
−
1.8
1.95
3.5
Supply Quiescent Current
I
dd
mA
p
V = 2.5 V, 8 ꢁ
V = 5.0 V, 8 ꢁ
p
−
−
1.8
1.95
3.5
p
Common Mode Voltage
Shutdown Current
V
−
−
−
V /2
−
0.5
−
V
ꢂ A
kꢁ
V
cm
p
I
0.02
300
−
SD
Shutdown Pull−Down
Shutdown Voltage High
Shutdown Voltage Low
Turn On Time (Note 8)
R
−
SD
V
SDIH
−
−
1.2
−
−
V
SDIL
−
0.4
−
V
T
WU
TON = GND
TON = VP
−
30
15
ms
Turn Off Time
T
−
−
−
−
1.0
8.5
2.3
−
−
ꢂ s
kꢁ
V
OFF
Output Impedance in Shutdown Mode
Output Swing
Z
SD
V
V = 2.5 V, R = 8.0 ꢁ
V = 5.0 V, R = 8.0 ꢁ (Note 7)
1.9
−
−
loadpeak
p
L
p
L
T = +25°C
3.8
4.6
0.5
A
RMS Output Power
P
O
V = 2.5 V, R = 4.0 ꢁ
−
−
−
W
p
L
THD + N < 1%
V = 2.5 V, R = 8.0 ꢁ
0.32
1.3
p
L
THD + N < 1%
−
V = 5.0 V, R = 8.0 ꢁ
p
L
THD + N < 1%
Maximum Power Dissipation (Note 8)
Output Offset Voltage
P
V = 5.0 V, R = 8.0 ꢁ
−
−
−
0.65
W
Dmax
p
L
V
V = 2.5 V
p
1.0
−
mV
OS
V = 5.0 V
p
Signal−to−Noise Ratio
SNR
V = 2.5 V, G = 2.0
20 Hz < F < 20 kHz
−
91
−
dB
dB
p
Positive Supply Rejection Ratio
PSRR V+
G = 2.0, R = 8.0 ꢁ
L
C
by
= 1.0 ꢂ F
Input Grounded
F = 217 Hz
V = 5.0 V
−
−
−
−88
−88
−88
−
−
−
p
V = 4.2 V
p
V = 3.0 V
p
F = 1.0 kHz
V = 5.0 V
−
−
−
−88
−88
−88
−
−
−
p
V = 4.2 V
p
V = 3.0 V
p
Efficiency
ꢄ
V = 2.5 V, P
V = 5.0 V, P
p
= 320 mW
−
−
70
60
−
−
%
p
orms
= 1.0 W
orms
Thermal Shutdown Temperature
Total Harmonic Distortion
T
−
160
−
°C
sd
THD
V = 2.5 V, F = 1.0 kHz
−
−
−
−
0.015
−
−
−
−
%
p
R = 4.0 ꢁ ꢅ A = 2.0
L
V
P
O
= 0.32 W
V = 5.0 V, F = 1.0 kHz
−
−
−
−
0.01
−
−
−
−
p
R = 8.0 ꢁ ꢅ A = 2.0
L
V
P
O
= 1.0 W
6. Min/Max limits are guaranteed by design, test or statistical analysis.
7. This parameter is guaranteed but not tested in production in case of a 5.0 V power supply.
8. See page 10 for a theoretical approach of this parameter.
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NCP2993
TYPICAL CHARACTERISTICS
1
1
THD+N
THD+N
V
P
= 2.5 V
V
= 3 V
P
P
= 100 mW
P = 250 mW
out
out
R = 8 ꢁ
L
R = 8 ꢁ
L
0.1
0.1
0.01
0.01
0.001
0.001
10
100
1,000
10,000
100,000
100,000
100,000
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 3. THD+N vs. Frequency,
Figure 4. THD+N vs. Frequency,
Single−Ended Input
Single−Ended Input
1
1
THD+N
THD+N
V
P
= 5 V
P
V
P
= 2.5 V
P
= 250 mW
out
= 100 mW
out
R = 8 ꢁ
L
R = 4 ꢁ
L
0.1
0.1
0.01
0.01
0.001
0.001
10
100
1,000
10,000
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 5. THD+N vs. Frequency,
Figure 6. THD+N vs. Frequency,
Single−Ended Input
Single−Ended Input
1
1
THD+N
THD+N
V
P
= 5 V
V
P
= 3 V
P
P
= 500 mW
= 250 mW
out
out
R = 4 ꢁ
L
R = 4 ꢁ
L
0.1
0.1
0.01
0.01
0.001
0.001
10
100
1,000
10,000
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 7. THD+N vs. Frequency,
Figure 8. THD+N vs. Frequency,
Single−Ended Input
Single−Ended Input
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NCP2993
TYPICAL CHARACTERISTICS
1
1
THD+N
THD+N
V
P
= 3 V
V
P
= 2.5 V
P
P
= 250 mW
= 100 mW
out
out
R = 8 ꢁ
L
R = 8 ꢁ
L
0.1
0.1
0.01
0.01
0.001
0.001
10
100
1,000
10,000
100,000
100,000
100,000
10
100
1,000
10,000
100,000
100,000
100,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 9. THD+N vs. Frequency,
Differential Input
Figure 10. THD+N vs. Frequency,
Differential Input
1
1
THD+N
THD+N
V
P
= 5 V
V
P
= 2.5 V
P
P
= 500 mW
= 100 mW
out
out
R = 8 ꢁ
L
R = 4 ꢁ
L
0.1
0.1
0.01
0.01
0.001
0.001
10
100
1,000
10,000
10
100
1,000
10,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 11. THD+N vs. Frequency,
Differential Input
Figure 12. THD+N vs. Frequency,
Differential Input
1
1
THD+N
THD+N
V
P
= 3 V
V
P
= 5 V
P
P
= 250 mW
= 500 mW
out
out
R = 4 ꢁ
L
R = 4 ꢁ
L
0.1
0.1
0.01
0.01
0.001
0.001
10
100
1,000
10,000
10
100
1,000
10,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 13. THD+N vs. Frequency,
Differential Input
Figure 14. THD+N vs. Frequency,
Differential Input
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NCP2993
TYPICAL CHARACTERISTICS
10
1
Vp = 2.5 V
3.6 V
4.2 V
5.5 V
5.0 V
3.0 V
2.7 V
0.1
0.01
0.001
THD+N
R = 8 ꢁ
L
Single−Ended Input
0
200
400
600
800
1000
1200
1400
1600
1800
P
out
(mW)
Figure 15. THD+N vs. Pout
10
1
Vp = 2.5 V
5.5 V
3.6 V
4.2 V
5.0 V
2.7 V
3.0 V
0.1
0.01
THD+N
R = 8 ꢁ
L
Differential Input
0
200
400
600
800
1000
1200
1400
1600
1800
P
out
(mW)
Figure 16. THD+N vs. Pout
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
PSRR
= 3 V
G = 2
Input Shorted
to GND
PSRR
= 3 V
G = 2
Input Shorted to GND
Differential Configuration
V
P
V
P
−20
−40
−60
−80
−100
−120
10
100
1000
10000
100000
10
100
1000
10000
100000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 17. PSRR vs. Frequency
Figure 18. PSRR vs. Frequency
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NCP2993
TYPICAL CHARACTERISTICS
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
PSRR
= 4.2 V
G = 2
Input Shorted
to GND
PSRR
= 4.2 V
G = 2
Input Shorted to GND
Differential Configuration
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
V
P
V
P
10
100
1000
10000
100000
10
100
1000
FREQUENCY (Hz)
10000
100000
FREQUENCY (Hz)
Figure 19. PSRR vs. Frequency
Figure 20. PSRR vs. Frequency
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
PSRR
= 5 V
G = 2
Input Shorted
to GND
PSRR
= 5 V
G = 2
Input Shorted to GND
Differential Configuration
V
P
V
P
10
100
1000
10000
100000
10
100
1000
FREQUENCY (Hz)
10000
100000
FREQUENCY (Hz)
Figure 21. PSRR vs. Frequency
Figure 22. PSRR vs. Frequency
900
800
700
600
500
400
300
200
5.5 V
5.0 V
4.2 V
3.6 V
3.0 V
100
0
2.7 V
400
Vp = 2.5 V
200
R = 8 ꢁ
L
0
600
800
1000
1200
1400
1600
1800
P
out
(mW)
Figure 23. Power Dissipation vs. Pout
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NCP2993
100
90
80
70
60
50
40
30
20
10
2000
1800
1600
1400
1200
1000
800
600
SNR
= 125 mW
R = 8 ꢁ
L
400
P
out
THD+N < 1%
R = 8 ꢁ
L
200
0
0
2.5
3.0
3.5
4.0
(V)
4.5
5.0
5.5
10
100
1000
10000
100000
FREQUENCY (Hz)
V
P
Figure 24. Maximum Output Power vs. VP
Figure 25. SNR vs. Frequency
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NCP2993
APPLICATION INFORMATION
Detailed Description
The NCP2993 audio amplifier can operate under 2.5 V
until 5.5 V power supply. With less than 1% THD + N, it
transistors are real−time controlled, and when one current
exceeds 1.1 A, the gate voltage of the MOS transistor is
clipped and no more current can be delivered.
can deliver up to 1.35 W RMS output power to an 8.0
ꢁ
Thermal Overload Protection
load (V = 5.0 V). If application allows to reach 10%
P
Internal amplifiers are switched off when the
temperature exceeds 160°C, and will be switched on again
only when the temperature decreases fewer than 140°C.
The NCP2993 is unity−gain stable and requires no
external components besides gain−setting resistors, an
input coupling capacitor and a proper bypassing capacitor
in the typical application.
THD + N, then 1.65 W can be provided using a 5.0 V
power supply.
The structure of the NCP2993 is basically composed of
two identical internal power amplifiers; the first one is
externally configurable with gain−setting resistors R and
in
R (the closed−loop gain is fixed by the ratios of these
f
resistors) and the second is internally fixed in an inverting
unity−gain configuration by two resistors of 20 kꢁ. So the
load is driven differentially through OUTA and OUTB
outputs. This configuration eliminates the need for an
output coupling capacitor.
The first amplifier is externally configurable (R and
f
R ), while the second is fixed in an inverting unity gain
in
configuration.
The differential−ended amplifier presents two major
advantages:
− The possible output power is four times larger (the
output swing is doubled) as compared to a single−ended
amplifier under the same conditions.
Internal Power Amplifier
The output PMOS and NMOS transistors of the amplifier
were designed to deliver the output power of the
specifications without clipping. The channel resistance
− Output pins (OUTA and OUTB) are biased at the same
(R ) of the NMOS and PMOS transistors does not exceed
potential V /2, this eliminates the need for an output
on
P
0.6ꢀ ꢁ when they drive current.
coupling capacitor required with a single−ended
amplifier configuration.
The differential closed loop−gain of the amplifier is
The structure of the internal power amplifier is
composed of three symmetrical gain stages, first and
medium gain stages are transconductance gain stages to
obtain maximum bandwidth and DC gain.
V
R
orms
V
inrms
f
given by A + 2 *
+
.
vd
R
in
Output power delivered to the load is given by
Turn−On and Turn−Off Transitions
When a shutdown low level is applied, the output level
is tied to Ground on each output after 10 ꢂ s.
2
(Vopeak)
P
+
(V
opeak
is the peak differential output
orms
2 * R
L
voltage).
With T = GND, turn on time is set to 30 ms. With T
ON
ON
When choosing gain configuration to obtain the desired
output power, check that the amplifier is not current limited
or clipped.
= V , turn on time is set to 15 ms. To avoid any pop and click
P
noises, R * C < 2.4 ms with T = GND and R * C
in
in
ON
in
in
< 1.2 ms with T = Vp. The electrical characteristics are
ON
The maximum current which can be delivered to the load
identical with the 2 configurations. This fast turn on time
added to a very low shutdown current saves battery life and
brings flexibility when designing the audio section of the
final application.
NCP2993 is a zero pop noise device when using a
single−ended or differential audio input configuration.
V
opeak
is 500 mA I
opeak
+
.
R
L
Gain−Setting Resistor Selection (Rin and Rf)
R
and R set the closed−loop gain of the amplifier.
in
f
In order to optimize device and system performance, the
NCP2993 should be used in low gain configurations.
The low gain configuration minimizes THD + noise
values and maximizes the signal to noise ratio, and the
amplifier can still be used without running into the
bandwidth limitations.
Shutdown Function
The device enters shutdown mode when shutdown signal
is low. During the shutdown mode, the DC quiescent
current of the circuit does not exceed 100 nA. In this
configuration, the output impedance is 8.5 kꢁ on each
output.
A closed loop gain in the range from 2 to 5 is
recommended to optimize overall system performance.
An input resistor (R ) value of 24 kꢁ is realistic in most
of applications, and doesn’t require the use of a too large
in
Current Limit Circuit
The maximum output power of the circuit (P
=
orms
capacitor C .
1.0 W, V = 5.0 V, R = 8.0 ꢁ) requires a peak current in
in
P
L
the load of 500 mA.
Input Capacitor Selection (Cin)
The input coupling capacitor blocks the DC voltage at
the amplifier input terminal. This capacitor creates a
In order to limit the excessive power dissipation in the
load when a short−circuit occurs, the current limit in the
load is fixed to 1.1 A. The current in the four output MOS
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NCP2993
high−pass filter with R , the cut−off frequency is given by
− up to 22 pF capacitor connected between each amplifier
output terminals and ground.
− Dedicated IEC filters such as ESD7.0 series from
ON Semiconductor.
In any case, the protection should be placed as close as
possible to the ESD stress entry point. Proper and carefull
layout is a key factor to ensure optimum protection level is
achieved. Designer should make sure the connection
impedance between protection and ground / protection and
NCP2993 is as low as possible.
in
1
fc +
.
2 * ꢆ * R * C
in in
The size of the capacitor must be large enough to couple
in low frequencies without severe attenuation.
IEC 61000-4-2 Level 4
In some particular applications, NCP2993 may need
extra ESD protection to pass IEC 61000-4-2 Level 4
qualification.
Depending on the test, user can consider different level
of protection:
ORDERING INFORMATION
Device
†
Package
9−Pin Flip−Chip
Shipping
NCP2993FCT2G
3000 / Tape & Reel
(Pb−Free)
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
WLCSP9, 1.22x1.22
CASE 499BM−01
ISSUE O
SCALE 4:1
DATE 27 SEP 2010
NOTES:
D
A
B
E
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
PIN A1
REFERENCE
2. CONTROLLING DIMENSION: MILLIMETERS.
3. COPLANARITY APPLIES TO SPHERICAL
CROWNS OF SOLDER BALLS.
MILLIMETERS
DIM
A
A1
A2
b
D
E
MIN
−−−
0.17
0.40 REF
0.24
1.22 BSC
1.22 BSC
0.40 BSC
MAX
0.66
0.24
2X
0.05
0.05
C
2X
C
0.29
TOP VIEW
SIDE VIEW
A2
e
0.05
C
GENERIC
MARKING DIAGRAM*
A
0.05
C
XXXX
AYWW
G
SEATING
PLANE
NOTE 3
C
A1
e
9X
b
XXXX = Specific Device Code
e
A
Y
WW
G
= Assembly Location
= Year
= Work Week
0.05
0.03
C
C
A
B
C
B
A
= Pb−Free Package
1
2
3
*This information is generic. Please refer
to device data sheet for actual part
marking.
BOTTOM VIEW
Pb−Free indicator, “G” or microdot “ G”,
may or may not be present.
RECOMMENDED
SOLDERING FOOTPRINT*
PACKAGE
OUTLINE
A1
9X0.25
0.40
PITCH
0.40
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
DOCUMENT NUMBER:
DESCRIPTION:
98AON53177E
WLCSP9, 1.22X1.22
PAGE 1 OF 1
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