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NCP4896 1.0 Watt Audio Power Amplifier with Earpiece Driving Capability
The NCP4896 is an audio power amplifier designed for portable communication device applications such as mobile phones. This part is capable of delivering 1.0 W of continuous average power to an 8.0 W BTL load from a 5.0 V power supply and, 250 mW to a 4.0 W BTL from 2.6 V power supply. It also provides the control of driving a single-ended earpiece and delivers 90 mW from a 5.0 V power supply to a 32 W load. This device 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. The NCP4896 contains circuitry to prevent from "pop and click" noise that would otherwise occur during turn-on and turn-off transitions. It is also efficient when switching modes from BTL to SE and SE to BTL. For maximum flexibility, the part provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with bypass capacitor). Due to its excellent PSRR, it can be directly connected to the battery, saving the use of an LDO.
Features http://onsemi.com MARKING DIAGRAM
1 9-PIN FLIP-CHIP FC SUFFIX CASE 499AL XXX A Y WW
A3
XXX AYWW A1
C1
= Specific Device Code = Assembly Location = Year = Work Week
PIN CONNECTIONS
9-PIN FLIP-CHIP CSP
A1 SE/BTL B1 VP C1 INM
A2 BYP B2 NC C2 SD (Top View)
A3 OUTB B3 VM C3 OUTA
* * * * * * * * * * *
Single-Ended or Differential Control 1.0 W to an 8.0 W BTL Load from a 5.0 V Power Supply Excellent PSRR: Direct Connection to the Battery Ultra Low Current Shutdown Mode 2.2 V-5.5 V Operation External Gain Configuration Capability External Turn-on Time Configuration Capability Thermal Overload Protection Circuitry Up to 1.0 nF Capacitive Load Driving Capability "Pop and Click" Noise Protection Circuit This is a Pb-Free Device
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 15 of this data sheet.
Typical Applications
* Portable Electronic Devices * PDAs * Mobile Phones
(c) Semiconductor Components Industries, LLC, 2005
1
March, 2005 - Rev. 3
Publication Order Number: NCP4896/D
NCP4896
RF 20 kW VP Cs Cin Rin VP BYPASS VP BYPASS Audio Input Cb 1 mF VMC BRIDGE R1 20 kW 8.0 W LOUD SPEAKER SHUTDOWN CONTROL 20 kW BYPASS VM - + R2 16 W or 32 W EARPIECE - + OUTA 1 mF
INM
Co 47 mF
MONO JACK
390 nF 20 kW
VIH SE VIL D
SHUTDOWN
SE/BTL
OUTB
Figure 1. Typical NCP4896 Application Circuit with Single-Ended Input PIN DESCRIPTION
Pin A1 A2 A3 B1 B2 B3 C1 C2 C3 I I I O Type I I O I Symbol SE/BTL BYP OUTB VP NC VM INM SD OUTA Description When this pin is Low , the audio amplifier is in differential mode. If a High level is applied, the configuration is in Single-Ended Mode Bypass capacitor pin which provides the common mode voltage (VP/2). Positive output of the amplifier. In high impedance state when the device is in Single-Ended mode. Positive analog supply of the cell. Not connected. Ground. Audio Input Signal. The device enters in shutdown mode when a low level is applied to this pin. Negative output of the amplifier. This is the active output dedicated to a SE load when this configuration is activated.
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NCP4896
MAXIMUM RATINGS (Note 1)
Rating Supply Voltage Operating Supply Voltage Input Voltage Max Output Current Power Dissipation (Note 2) Operating Ambient Temperature Max Junction Temperature Storage Temperature Range Thermal Resistance Junction-to-Air ESD Protection Human Body Model (HBM) (Note 4) Machine Model (MM) (Note 5) Symbol VP Op VP Vin Iout Pd TA TJ Tstg RqJA - - Value 6.0 2.2 to 5.5 V -0.3 to Vcc +0.3 500 Internally Limited -40 to +85 150 -65 to +150 90 (Note 3) > 2000 > 200 100 mA Unit V - V mA - C C C C/W V -
Latch Up Current at TA = 85C (Note 6)
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at TA = +25C. 2. The thermal shutdown set to 160C (typical) avoids irreversible damage on the device due to power dissipation. 3. For the 9-Pin Flip-Chip CSP package, the RqJA is highly dependent of the PCB Heatsink area. For example, RqJA can equal 195C/W with 50 mm2 total area and also 135C/W with a 500 mm2 area. 4. Human Body Model, 100 pF discharge through a 1.5 kW resistor following specification JESD22/A114. 5. Machine Model, 200 pF discharged through all pins following specification JESD22/A115. 6. Maximum ratings per JEDEC Standard JESD78.
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NCP4896
ELECTRICAL CHARACTERISTICS Limits apply for TA between -40C to +85C (Unless otherwise noted).
Characteristic Supply Quiescent Current Symbol Idd Conditions VP = 3.0 V, No Load VP = 5.0 V, No Load BTL VP = 3.0 V, 8.0 W, BTL VP = 5.0 V, 8.0 W, BTL VP = 5.0 V, No Load, SE VP = 5.0 V, 32 W, SE Common Mode Voltage Shutdown Current Vcm ISD - For VP Between 2.2 V to 5.5 V SD = Low TA = +25C TA = -40C to +85C - - - - Cby = 1.0 mF - VP = 3.0 V, 8.0 W, BTL VP = 5.0 V, 8.0 W, BTL VP = 5.0 V, 32 W, SE Rms Output Power PO VP = 5.0 V, 32 W, SE THD + N < 0.1% VP = 5.0 V, 16 W, SE THD + N < 0.1% VP = 5.0 V, 8.0 W, BTL THD + N < 0.1% For VP between 2.2 V to 5.5 V BTL and SE RF = Ri = 20 kW VPripple_pp = 200 mV Cby = 1.0 mF Input Terminated with 10 W f = 217 Hz to 1.0 khz VP = 5.0 V, 8.0 W, BTL VP = 3.0 V, 8.0 W, BTL VP = 5.0 V, 32 W, SE VP = 3.0 V, 32 W, SE Efficiency h VP = 3.0 V, 8.0 W, BTL Porms = 380 mW VP = 5.0 V, 8.0 W, BTL Porms = 1.0 W - RF = Ri = 20 kW VP = 3.6 V, f = 1.0 kHz Pout = 400 mW, 8.0 W, BTL Pout = 40 mW, 16 W, BTL Pout = 40 mW, 32 W, SE - - - - - - - -66 -67 -69 -70 64 63 160 - - - - % - - - - - - C % - - - 0.02 0.01 0.003 - - - 1.4 - 1.4 - - - 2.3 - - - - - -30 Min (Note 7) - - - - - - Typ 1.7 1.8 1.8 2.0 1.0 1.1 VP/2 - 20 - - - - - 140 20 2.57 4.3 4.9 92 176 1080 1.0 Max (Note 7) - - 4.0 2.5 - - - 600 2.0 - 0.4 - 0.4 - - - - - - - - 30 mV dB mA V Unit mA
nA mA V V V V ms ms V V mW
Shutdown Voltage High Shutdown Voltage Low SE Select DE Select Turning On Time (Note 8) Turning Off Time (Note 8) Output Swing
VSDIH VSDIL VBTL/SE VSE/BTL TWU TSD Vloadpeak
Output Offset Voltage Power Supply Rejection Ratio
Vos PSRR V+
Thermal Shutdown Temperature Total Harmonic Distortion
Tsd THD + N
7. Min/Max limits are guaranteed by design, test or statistical analysis. 8. See section "Application Information" for a theoretical approach of this parameter.
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NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
10 VP = 5.0 V RF = Ri = 20 kW BTL Mode RL = 8 W f = 1.0 kHz 10 VP = 3.0 V RF = Ri = 20 kW BTL Mode RL = 8 W f = 1.0 kHz
1 THD + N (%)
1 THD + N (%)
0.1
0.1
0.01
0.01
0.001 0 200 400 600 800 1000 1200 Pout, POWER OUT (mW)
0.001 0 100 200 300 400 500 Pout, POWER OUT (mW)
Figure 2. THD + N vs. Power Out (BTL Mode)
10 VP = 2.6 V RF = Ri = 20 kW BTL Mode RL = 4 W f = 1.0 kHz 1
Figure 3. THD + N vs. Power Out (BTL Mode)
THD + N (%)
THD + N (%)
1
0.1
VP = 5.0 V RF = Ri = 20 kW BTL Mode RL = 8 W Pout = 250 mW
0.1
0.01
0.01 0 100 200 300 400 500 Pout, POWER OUT (mW)
0.001 10 100 1000 FREQUENCY (Hz) 10,000 100,000
Figure 4. THD + N vs. Power Out (BTL Mode)
Figure 5. THD + N vs. Frequency (BTL Mode)
1 VP = 3.0 V RF = Ri = 20 kW BTL Mode RL = 8 W Pout = 250 mW VP = 2.6 V RF = Ri = 20 kW BTL Mode RL = 8 W Pout = 100 mW
THD + N (%)
0.01
THD + N (%) 10,000 100,000
0.1
0.1
0.01
0.001 10 100 1000 FREQUENCY (Hz)
0.001 10 100 1000 FREQUENCY (Hz) 10,000 100,000
Figure 6. THD + N vs. Frequency (BTL Mode)
Figure 7. THD + N vs. Frequency (BTL Mode)
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NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
10.000 VP = 5.0 V RF = Ri = 20 kW SE Mode RL = 32 W f = 1.0 kHz 10.000 VP = 3.0 V RF = Ri = 20 kW SE Mode RL = 32 W f = 1.0 kHz
1.000 THD + N (%)
1.000 THD + N (%) 60 80 100
0.100
0.100
0.010
0.010
0.001 0
20
40
0.001 0
10
20 OUTPUT POWER (mW)
30
40
OUTPUT POWER (mW)
Figure 8. THD + N vs. Output Power (SE Mode)
10.000 VP = 2.6 V RF = Ri = 20 kW SE Mode RL = 32 W f = 1.0 kHz 1.000
Figure 9. THD + N vs. Output Power (SE Mode)
1.000 THD + N (%)
0.100
THD + N (%)
0.100
VP = 4.2 V RF = Ri = 20 kW SE Mode RL = 32 W Pout = 50 mW
0.010
0.010
0.001 0
5.0
10
15
20
25
30
0.001 10
100
1000 FREQUENCY (Hz)
10000
100000
OUTPUT POWER (mW)
Figure 10. THD + N vs. Output Power (SE Mode)
0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 VP = 2.6 V RF = Ri = 20 kW, Cb = 1.0 mF BTL Mode RL = 8 W Vripple = 200 mV pk-pk 0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10
Figure 11. THD + N vs. Frequency (SE Mode)
VP = 3.6 V RF = Ri = 20 kW, Cb = 1.0 mF BTL Mode RL = 8 W Vripple = 200 mV pk-pk
100
1000 FREQUENCY (Hz)
10000
100000
Figure 12. PSRR (BTL Mode) @ VP = 2.6 V
Figure 13. PSRR (BTL Mode) @ VP = 3.6 V
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NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 VP = 5.0 V RF = Ri = 20 kW, Cb = 1.0 mF BTL Mode RL = 8 W Vripple = 200 mV pk-pk 0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 Cb=1.0 mF -100 10 100 Cb= 4.7 mF VP = 3.6 V RF = Ri = 20 kW BTL Mode RL = 8 W Vripple = 200 mV pk-pk Cb=0.47 mF
1000 FREQUENCY (Hz)
10000
100000
Figure 14. PSRR (BTL Mode) @ VP = 5.0 V
Figure 15. PSRR vs. Cb (BTL Mode) @ VP = 3.6 V
0
0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 GAIN = 1 VP = 3.6 V RF = Ri = 20 kW and RF = Ri = 100 kW BTL Mode RL = 8 W Vripple = 200 mV pk-pk GAIN = 5
-10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10
VP = 2.6 V RF = Ri = 20 kW, Cb = 1.0 mF SE Mode RL = 32 W Vripple = 200 mV pk-pk
100
1000 FREQUENCY (Hz)
10000
100000
Figure 16. PSRR vs. Gain (BTL Mode) @ VP = 3.6 V
Figure 17. PSRR (SE Mode) @ VP = 2.6 V
0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 VP = 3.6 V RF = Ri = 20 kW, Cb = 1.0 mF SE Mode RL = 32 W Vripple = 200 mV pk-pk
0 -10 -20 -30 PSRR (dB)R -40 -50 -60 -70 -80 -90 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 VP = 5.0 V RF = Ri = 20 kW, Cb = 1.0 mF SE Mode RL = 32 W Vripple = 200 mV pk-pk
Figure 18. PSRR (SE Mode) @ VP = 3.6 V
Figure 19. PSRR (SE Mode) @ VP = 5.0 V
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NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 Cb=1.0 mF -100 10 100 Cb= 4.7 mF 1000 FREQUENCY (Hz) 10000 100000 VP = 3.6 V RF = Ri = 20 kW SE Mode RL = 32 W Vripple = 200 mV pk-pk Cb=0.47 mF 0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 GAIN = 1 VP = 3.6 V RF = Ri = 20 kW and RF = Ri = 100 kW SE Mode RL = 8 W Vripple = 200 mV pk-pk GAIN = 5
Figure 20. PSRR vs. Cb (SE Mode) @ VP = 3.6 V
Figure 21. PSRR vs. Gain (SE Mode) @ VP = 3.6 V
50 OUTPUT NOISE VOLTAGE (mVrms) OUTPUT NOISE VOLTAGE (mVrms) NCP4896 ON 40
50 VP = 3.6 V RF = Ri = 20 kW SE Mode RL = 32 W
40
30
20
VP = 3.6 V RF = Ri = 20 kW BTL Mode RL = 8 W
30
20
NCP4896 ON
10 NCP4896 OFF 0 10 100 1000 10000
10 NCP4896 OFF 0 10 100 1000 10000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 22. Output Noise Voltage (BTL Mode) @ VP = 3.6 V
3.2 3.0 VP = 5.5 V 2.8 Idd, (mA) 2.6 VP = 3.0 V 2.4 2.2 2.0 -40 VP = 2.2 V RF = Ri = 20 W BTL MODE RL = 8 W VP = 5.0 V Idd, (mA) 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 85 1.0 -40
Figure 23. Output Noise Voltage (SE Mode) @ VP = 3.6 V
VP = 5.0 V
VP = 5.5 V
VP = 3.0 V VP = 2.2 V RF = Ri = 20 W SE MODE RL =32 W 35 60 85
-15
10
35
60
-15
10
TEMPERATURE (C)
TEMPERATURE (C)
Figure 24. Quiescent Current (BTL Mode) vs. VP
Figure 25. Quiescent Current (SE Mode) vs. VP
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NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
VP = 3.6 V RF = Ri = 20 kW, Cb = 1.0 mF BTL Mode RL = 8 W
Figure 26. Turn On Sequence (BTL Mode) @ VP = 3.6 V
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NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
0.7 PD, POWER DISSIPATION (W) 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1 1.2 Pout, OUTPUT POWER (W) VP = 5 V RL = 8 W F = 1 kHz THD + N < 0.1% PD, POWER DISSIPATION (W) 0.3 0.25 0.2 0.15 0.1 0.05 0 0 0.1 0.2 0.3 0.4 0.5 Pout, OUTPUT POWER (W) VP = 3.3 V RL = 8 W F = 1 kHz THD + N < 0.1%
Figure 27. Power Dissipation vs. Output Power
Figure 28. Power Dissipation vs. Output Power
0.25 PD, POWER DISSIPATION (W) PD, POWER DISSIPATION (W)
0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 0.1 0.2 0.3 0.4 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 Pout, OUTPUT POWER (W) Pout, OUTPUT POWER (W) VP = 2.6 V F = 1 kHz THD + N < 0.1% RL = 8 W RL = 4 W
0.2
0.15 VP = 3 V RL = 8 W F = 1 kHz THD + N < 0.1%
0.1
0.05 0
Figure 29. Power Dissipation vs. Output Power
Figure 30. Power Dissipation vs. Output Power
700 PD, POWER DISSIPATION (mW) 600 200 mm2 500 50 mm2 400 300 200 100 0 0 PDmax = 633 mW for VP = 5 V, RL = 8 W 20 40 60 80 100 120 140 160 500 mm2 PCB Heatsink Area DIE TEMPERATURE (C) @ AMBIENT TEMPERATURE 25C
180 Maximum Die Temperature 150C 160 140 120 VP = 4.2 V 100 80 60 40 VP = 2.6 V 50 100 150 200 250 300 PCB HEATSINK AREA (mm2) VP = 3.3 V VP = 5 V
TA, AMBIENT TEMPERATURE (C)
Figure 31. Power Derating - 9-Pin Flip-Chip CSP
Figure 32. Maximum Die Temperature vs. PCB Heatsink Area
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NCP4896
APPLICATION INFORMATION
Detailed Description Shutdown Function
The NCP4896 audio amplifier can operate from 2.2 V until 5.5 V power supply. It delivers 320 mW rms output power to 4.0 W load (VP = 2.6 V) and 1.0 W rms output power to 8.0 W load (VP = 5.0 V). The structure of the NCP4896 is basically composed of two identical internal power amplifiers. Both are externally configurable with gain-setting resistors Rin and RF (the closed-loop gain is fixed by the ratios of these resistors). So the load is driven differentially through OUTA and OUTB outputs. This configuration eliminates the need for an output coupling capacitor.
Internal Power Amplifier
The device enters shutdown mode when the shutdown signal is low. During the shutdown mode, the Dc quiescent current of the circuit is typically 10 nA.
Current Limit Circuit
The output Pmos and Nmos transistors of the amplifier were designed to deliver the output power of the specifications without clipping. The channel resistance (Ron) of the Nmos and Pmos transistors does not exceed 0.6 W when they drive current. 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.
Turn-On and Turn-Off Transitions
The maximum output power of the circuit (Porms = 1.0 W, VP = 5.0 V, RL = 8.0 W) requires a peak current in the load of 500 mA. 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 800 mA. The current in the four output MOS transistors are real-time controlled, and when one current exceeds 800 mA, the gate voltage of the MOS transistor is clipped and no more current can be delivered.
Single-Ended Operation
In SE mode, the load is driven from the primary amplifier output (OUTA). The gain is set by the ration between RF and Ri.
SE Gain + - Rf Ri
A cycle with a turn-on and turn-off transition is illustrated with plots that show both single ended signals on the previous page. In order to eliminate "pop and click" noises during transitions, output power in the load must be slowly established or cut. When logic high is applied to the shutdown pin, the bypass voltage begins to rise exponentially and once the output DC level is around the common mode voltage, the gain is established slowly (20 ms). This way to turn-on the device is optimized in terms of rejection of "pop and click" noises. A theoretical value of turn-on time at 25C is given by the following formula. Cby: bypass capacitor R: internal 150 k resistor with a 25% accuracy Ton = 0.95 * R * Cby The device has the same behavior when it is turned-off by a logic low on the shutdown pin. During the shutdown mode, amplifier outputs are connected to the ground. However, to cut totally the output audio signal, you only need to wait for 20 ms.
In this SE mode, an output capacitor (Co) is required to block the common mode voltage at the output of the amplifier, thus avoiding DC currents in the load. As for the high pass filter due to the input capacitor and the Ri resistor, the load gives with Co another first order high pass filter, the cut-off frequency of which is given by:
Fc + SE/BTL Operation 1 2pRL @ Co
Due to the internal control of each amplifier through SE/BTL pin, the NCP4896 allows a cost saving for application which requires to drive a example an 8.0 W BTL and a 32 W Single-Ended load. The internal circuitry avoids "pop and click" noises that could occur in both BTL and Singled-Ended loads during transitions from SE to BTL and BTL to SE.
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NCP4896
Thermal Overload Protection Gain-Setting Resistor Selection (Rin and RF)
Internal amplifiers are switched off when the temperature exceeds 160C, and will be switched on again only when the temperature decreases below 140C. The NCP4896 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. Both internal amplifiers are externally configurable (RF and Rin) with gain 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. - Output pins (OUTA and OUTB) are biased at the same potential VP/2, this eliminates the need for an output coupling capacitor required with a single-ended amplifier configuration. The differential closed loop-gain of the amplifier is given by Avd + *
V Rf + orms . Vorms is the rms value of Rin Vinrms
Rin and RF set the closed-loop gain of both amplifier. In order to optimize device and system performance, the NCP4896 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. A closed loop gain in the range from 2 to 5 is recommended to optimize overall system performance. An input resistor (Rin) value of 22 kW is realistic in most of applications, and doesn't require the use of a too large capacitor Cin.
Input Capacitor Selection (Cin)
The input coupling capacitor blocks the DC voltage at the amplifier input terminal. This capacitor creates a high-pass filter with Rin, the cut-off frequency is given by
fc + 1 . 2 * P * Rin * Cin
the voltage seen by the load and Vinrms is the rms value of the input differential signal. Output power delivered to the load is given by
Porms + (Vopeak)2 (Vopeak is the peak differential 2 * RL
The value of the capacitor must be high enough to ensure good coupling at low frequencies without attenuation. However a large input coupling capacitor requires more time to reach its quiescent DC voltage (VP/2) and can increase the turn-on pops. An input capacitor value between 0.1 m and 0.39 mF performs well in many applications (With Rin = 22 kW).
Bypass Capacitor Selection (Cby)
output voltage). When choosing gain configuration to obtain the desired output power, check that the amplifier is not current limited or clipped. The maximum current which can be delivered to the load is 500 mA Iopeak +
Vopeak . RL
The bypass capacitor Cby provides half-supply filtering and determines how fast the NCP4896 turns on. This capacitor is a critical component to minimize the turn-on pop. A 1.0 mF bypass capacitor value (Cin = < 0.39 mF) should produce clickless and popless shutdown transitions. The amplifier is still functional with a 0.1 mF capacitor value but is more susceptible to "pop and click" noises. Thus, a 1.0 mF bypassing capacitor is recommended.
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NCP4896
J1 VP R1 20 kW
GND
VP Cs 1 mF TP3 VP INM BYPASS VP BYPASS C4 1 mF VMC BRIDGE 20 kW - + OUTA Co 47 mF R5 1 kW J5 TP5
J18 C2 Audio Input 1 mF 20 kW R2
U1
Audio Input J9 100 kW R4
VP J13 SHUTDOWN J6 BIAS CONTROL J20 SE/BTL 20 kW TP4 RL 8W
J12
16 W or 32 W EARPIECE IN U2 OR J5
Shutdown Input
U2
J8
J10
J11 VP J19 BYPASS - +
OUTB
SE/BTL Input VM C5 100 nF R7 R6 VP 100 kW 100 kW
Figure 33. Typical NCP4896 Application Circuit with Single-Ended Input
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NCP4896
Silkscreen Layer
Top Layer
Bottom Layer
Figure 34. Demonstration Board for 9-Pin Flip-Chip CSP Device - PCB Layers
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NCP4896
BILL OF MATERIAL
Item 1 2 3 4 5 6 7 8 9 10 11 12 13 Part Description NCP4896 Audio Amplifier 3.5 mm PCB Jack Connector SMD Resistor 20 kW SMD Resistor 100 kW SMD Resistor 1.0 kW Ceramic Capacitor 1.0 mF, 16 V, X7R Tantalum Capacitor 47 mF, 6.3 V Ceramic Capcitor 100 nF, 50 V, X7R Jumper Header Vertical Mount, 2*1, 100 mils Jumper Connector, 400 mils I/O Connector. It Can be Plugged by BLZ5.08/2 (Weidmuller Reference) SMB Connector Test Point Ref U1 U2 R1, R2 R4, R6, R7 R5 C1, C2, C4 C3 C5 J10, J11, J12, J13, J19, J20 J18 J1, J5, J6 J4, J8, J9 TP3, TP4, TP5 Weidmuller Radiall Keystone SL5.08/2/90B R114665000 5000 0805 0805 0805 0805 B Size 0805 Decelect-Forgos (Eurosab) Vishnay-Draloric Vishnay-Draloric Vishnay-Draloric Murata AVX Murata PCB Footprint Manufacturer Manufacturer Reference NCP4896 IEM101-3 CRCW0805 CRCW0805 CRCW0805 GRM21 Series GRM21BR71C105KA01L TPS Series GRM21 Series GRM21BR71H104KA01L
ORDERING INFORMATION
Device NCP4896FCT1G Marking MAM Package 9-Pin Flip-Chip (Pb-Free) Shipping 3000/T ape and Reel
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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NCP4896
PACKAGE DIMENSIONS
9-PIN FLIP-CHIP FC SUFFIX CASE 499AL-01 ISSUE O
4X
-A- D -B- E
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. COPLANARITY APPLIES TO SPHERICAL CROWNS OF SOLDER BALLS. MILLIMETERS MIN MAX 0.540 0.660 0.210 0.270 0.330 0.390 1.450 BSC 1.450 BSC 0.290 0.340 0.500 BSC 1.000 BSC 1.000 BSC
0.10 C
TOP VIEW 0.10 C 0.05 C -C-
SEATING PLANE
A
A2 A1 SIDE VIEW D1 e
C B
DIM A A1 A2 D E b e D1 E1
e
A 9X
E1
SOLDERING FOOTPRINT*
1 2 3
b
0.05 C A B 0.03 C BOTTOM VIEW
0.50 0.0197
0.50 0.0197
0.265 0.01
SCALE 20:1
mm inches
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
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NCP4896/D

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