FAN7033MPX Fairchild Semiconductor, FAN7033MPX Datasheet - Page 17

• Manufacturer Part Number: FAN7033MPX
• Description: Audio Amplifiers 2W CMOS Stereo Power Amplifier wtih Fixed
• Manufacturer: Fairchild Semiconductor

Specifications of FAN7033MPX

• Product: Class-AB
• Output Power: 1.9 W
• Thd Plus Noise: 0.6 %
• Operating Supply Voltage: 3 V, 5 V
• Maximum Power Dissipation: Internally Limited
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 8 Ohms
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Output Type: 2-Channel Stereo
• Package / Case: MLP-14
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 1.9x2@4OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.6@4Ohm@1W%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 68dB
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 14
• Package Type: MLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Single-Ended Input
For the case, a source does not provide the fully differential signal, the residual input must be well treated.
Case(A) : For this case, input is left alone without any treatment, that is, input pin is floating. Even the pin is float-
ing, the BTL amplifier works and drives load. However, this configuration might cause unwanted noise at the output
signal. Furthemore, floated configuration decreases PSRR(Power Supply Rejection Ratio) and increase POP
noise.
Case(B) : Case(B) is strongly recommended. This configuration increases PSRR and decreases POP noise as
well. Of cource, to get the best performance, CINP must be the same value with CINN.
THD+N(Total Harmonic Distortion plus Noise)
THD+N stands for linearity and output noise of the amplifier as well. The FAN7033MP has the circuit for enhancing
THD. In spite of that, to get low THD+N, users should follow the recommendation:
(1) Use fully differential input configuration : A fully differential input makes low THD at output. Thus, for a single-
ended input case, THD+N slightly increaes.
(2) Do not miss C
immunity from the supply line.
(3) Do not miss C
reduced to get low THD by connecting this capacitor between all VDD pins and the ground as closely as possible.
BYP
SUP
. C
. Voltage fluctuation in supply line increases THD. Thus, such voltage fluctuation must be
BYP
INPUT
INPUT
helps to increase PSRR. Thus, using this capacitor, it is possible to increase noise
FLOATING
C
C
C
INN
INN
INP
Case (A) : Residual Input Pin Floating
Case (B) : AC Coupling to Ground
15kΩ
15kΩ
90kΩ
90kΩ
15kΩ
15kΩ
15kΩ
15kΩ
15kΩ
15kΩ
VDD/2
VDD/2
90kΩ
90kΩ
AMP1
AMP1
AMP2
AMP2
90kΩ
90kΩ
90kΩ
90kΩ
OUTP
OUTN
OUTN
OUTP
FAN7033MP
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