NCP2990FCT2GEVB ON Semiconductor, NCP2990FCT2GEVB Datasheet - Page 10

• Manufacturer Part Number: NCP2990FCT2GEVB
• Description: EVAL BOARD FOR NCP2990FCT2G
• Manufacturer: ON Semiconductor

Specifications of NCP2990FCT2GEVB

• Design Resources: NCP2990 EVB BOM NCP2990FCT2GEVB Gerber Files NCP2990 EVB Schematic
• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.35W x 1 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Operating Temperature: -10°C ~ 75°C
• Board Type: Fully Populated
• Utilized Ic / Part: NCP2990
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NCP2990FCT2G
• Other names: NCP2990FCT2GEVBOS

Gain−Setting Resistor Selection (R
NCP2990 should be used in low gain configurations.
values and maximizes the signal to noise ratio, and the
amplifier can still be used without running into the
bandwidth limitations.
recommended to optimize overall system performance.
of applications, and doesn’t require the use of a too large
capacitor C
Input Capacitor Selection (C
the amplifier input terminal. This capacitor creates a
TP1*
R
In order to optimize device and system performance, the
The low gain configuration minimizes THD + noise
A closed loop gain in the range from 2 to 5 is
An input resistor (R
The input coupling capacitor blocks the DC voltage at
in
V
p
and R
OUTA
TP2*
in
f
set the closed−loop gain of the amplifier.
.
OUTB
TP3*
AUDIO
INPUT
in
J6
J8
J3*
) value of 22 kW is realistic in most
V
p
in
Figure 25. Schematic of the NCP2990 Demonstration Board
150 kW
J12
)
100 nF
C1
C2*
in
and R
20 kW
R3
R1
C3
f
)
1 mF
R2
20 kW
http://onsemi.com
*C2, TP1, TP2, and TP3: Not Mounted
BYPASS
SHUTDOWN
INM
INP
NCP2990
VM_P
10
high−pass filter with R
in low frequencies without severe attenuation.
performs well in many applications (With R
Bypass Capacitor Selection (Cby)
and determines how fast the NCP2990 turns on. With a
single−ended audio input, the amplifier will be a zero pop
noise device no matter the bypass capacitor.
fc
The size of the capacitor must be large enough to couple
An input capacitor value between 33 nF and 220 nF
The bypass capacitor Cby provides half−supply filtering
+
V
p
2 * P * R in * C in
1 mF
SHUTDOWN
CONTROL
−
+
−
+
1
C4
V
p
.
in
20 kW
20 kW
, the cut−off frequency is given by
VM
OUTB
OUTA
J11
J5
in
J7
= 22 KW).
8W