NCP2809A ONSEMI [ON Semiconductor], NCP2809A Datasheet

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NCP2809A

Manufacturer Part Number
NCP2809A
Description
NOCAP 135 mW Stereo Headphone Power Amplifier
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet

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NCP2809ADMR2
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NCP2809 Series
NOCAPt 135 mW Stereo
Headphone Power Amplifier
capable of delivering 135 mW of continuous average power per
channel into 16 W loads.
provide high quality output power from low supply voltage,
requiring very few external components. Since NCP2809 does not
require bootstrap capacitors or snubber networks, it is optimally
suited for low−power portable systems. NCP2809A has an internal
gain of 0 dB while specific external gain can externally be set with
NCP2809B.
device can be connected to the middle point of the headset (Figure 1).
In such case, the two external heavy coupling capacitors typically
used can be removed. Otherwise, you can also use both outputs in
single ended mode with external coupling capacitors (Figure 43).
be directly connected to the battery, saving the use of an LDO.
Features
Typical Applications
November, 2004 − Rev. 7
The NCP2809 is a cost−effective stereo audio power amplifier
The NCP2809 audio power amplifier is specifically designed to
If the application allows it, the virtual ground provided by the
Due to its excellent Power Supply Rejection Ratio (PSRR), it can
than 0.01%
Pb−Free Package is Available
135 mW to a 16 W Load from a 5.0 V Power Supply
Excellent PSRR (85 dB Typical): Direct Connection to the Battery
“Pop and Click” Noise Protection Circuit
Ultra Low Current Shutdown Mode
2.2 V–5.5 V Operation
Outstanding Total Harmonics Distortion + Noise (THD+N): Less
External Turn−on and Turn−off Configuration Capability
Thermal Overload Protection Circuitry
Cellular Phone
Portable Stereo
MP3 Player
Personal and Notebook Computers
Semiconductor Components Industries, LLC, 2004
1
See detailed ordering and shipping information in the package
dimensions section on page 20 of this data sheet.
10
REF_I
IN_R
IN_L
BYP
1
SD
ORDERING INFORMATION
PIN CONNECTIONS
http://onsemi.com
1
2
3
4
5
X = E for NCP2809A
X =
A = Assembly Location
Y = Year
W = Work Week
DM SUFFIX
CASE 846B
Micro10
C for NCP2809B
Publication Order Number:
10
9
8
7
6
OUT_R
V
OUT_I
V
OUT_L
MARKING
DIAGRAM
M
P
NCP2809/D
AYW
MAx

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NCP2809A Summary of contents

Page 1

... Since NCP2809 does not require bootstrap capacitors or snubber networks optimally suited for low−power portable systems. NCP2809A has an internal gain while specific external gain can externally be set with NCP2809B. ...

Page 2

... I IN_L AUDIO INPUT 390 BYPASS IN_R AUDIO INPUT 20 kW 390 nF SHUTDOWN Figure 2. NCP2809A Typical Application Schematic with Output Coupling Capacitor TIP (LEFT) NCP2809 Series − OUT_L + V P BYPASS + OUT_I V MC − ...

Page 3

IN_L AUDIO INPUT 390 nF BYPASS bypass IN_R AUDIO INPUT 390 nF SHUTDOWN Figure 4. NCP2809B Typical Application Schematic without Output Coupling Capacitor C I ...

Page 4

... Machine Model, 200 pF discharged through all pins following specification JESD22/A115. 3. Maximum ratings per JEDEC standard JESD78. *This device contains 752 active transistors and 1740 MOS gates. NCP2809 Series Description (NCP2809A) or the external (NCP2809A) or the external Micro10 Human Body Model (HBM) (Note 1) Machine Model (MM) (Note 2) http://onsemi.com 4 (NCP2809B) ...

Page 5

... ELECTRICAL CHARACTERISTICS The following parameters are given for the NCP2809A and NCP2809B mounted externally with 0 dB gain, unless otherwise noted. (For typical values for min and max values T A Characteristic Symbol Supply Quiescent Current I Output Offset Voltage V Shutdown Current I Shutdown Voltage High (Note 5) ...

Page 6

... ELECTRICAL CHARACTERISTICS The following parameters are given for the NCP2809A and NCP2809B mounted externally with 0 dB gain, unless otherwise noted. (For typical values for min and max values T A Characteristic Symbol Positive Supply Rejection Ratio PSRR V+ Positive Supply Rejection Ratio ...

Page 7

FREQUENCY (Hz) Figure 6. THD+N vs. Frequency = 5 out 10 1 0.1 0.01 0.001 10 100 1000 FREQUENCY (Hz) Figure 8. THD+N ...

Page 8

OUTPUT POWER (mW) Figure 12. THD+N vs. Power Out = 16 W, 1.0 kHz 0.1 0.01 0.001 ...

Page 9

OUTPUT POWER (mW) Figure 18. THD+N vs. Power Out = 16 W, 1.0 kHz −40 −50 −60 −70 −80 10 100 1000 FREQUENCY (Hz) ...

Page 10

... Figure 29. PSRR − Input Grounded with http://onsemi.com 10 1000 10000 100000 FREQUENCY (Hz) Figure 25. Crosstalk = out NCP2809A 1000 10000 100000 FREQUENCY (Hz 200 mV pk−pk, R ripple L NCP2809A 1000 10000 100000 FREQUENCY (Hz 200 mV pk−pk, R ripple L ...

Page 11

... Figure 33. PSRR − Input Grounded with http://onsemi.com 11 NCP2809A 100 1000 10000 100000 FREQUENCY (Hz 200 mV pk−pk, R ripple L NCP2809A 100 1000 10000 100000 FREQUENCY (Hz 200 mV pk−pk, R ripple L ...

Page 12

NCP2809B −30 −40 −50 −60 −70 −80 −90 −100 −110 10 100 1000 FREQUENCY (Hz) Figure 34. PSRR − Input Grounded with 2 200 mV pk−pk ripple G = ...

Page 13

Figure 38. Turning–On Time/V p and F = 100 Hz Ch1 = OUT_R, Ch2 = VMC and Ch3 = Shutdown Figure 40. Turning–Off Time/V p and F = 100 Hz Ch1 = OUT_R, Ch2 = VMC and Ch3 = Shutdown ...

Page 14

... V) and 131 mW P power load (V = 5.0 V). P The structure of NCP2809 is basically composed of two identical internal power amplifiers; NCP2809A has a fixed internal gain and the gain can be set externally with the NCP2809B. Internal Power Amplifier The output P and N transistors of the amplifier are ...

Page 15

... It minimizes THD+N values and maximizes the signal−to−noise ratio, and the amplifier can still be used without running into the bandwidth limitations. TIME NCP2809A can be used when gain is required. Adjustable gain is available on NCP2809B p.R L http://onsemi.com ...

Page 16

NCP2809 Amplifier External Components Input Capacitor Selection ( The input coupling capacitor blocks the DC voltage at the amplifier input terminal. This capacitor creates a high−pass filter with the internal R internal the cut−off frequency of which is ...

Page 17

NCP2809 Series IN_L AUDIO INPUT 390 nF BYPASS V P BYPASS V MC BRIDGE bypass C I AUDIO IN_R INPUT 390 nF SHUTDOWN Figure 42. Typical Application Schematic Without ...

Page 18

DEMONSTRATION BOARD AND LAYOUT GUIDELINES VM1 C2 IN_R 1 390 BYPASS VM1 VM1 C4 IN_L 5 390 100 k SHUTDOWN 2 J1 VM1 V P ...

Page 19

NCP2809 Series TOP LAYER BOTTOM LAYER Figure 45. Demonstration Board for Micro10 Device – PCB Layers http://onsemi.com 19 ...

Page 20

... The most suitable place for this connection is directly on the pad of this middle point. ORDERING INFORMATION Device NCP2809ADMR2 NCP2809BDMR2 NCP2809BDMR2G †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. ...

Page 21

K D PIN 0.08 (0.003) 0.038 (0.0015) C −T− SEATING H PLANE 1.04 10X 0.041 8X *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and ...

Page 22

NOCAP is a trademark of Semiconductor Components Industries, LLC (SCILLC). ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, ...

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