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PDF PT5326 Data sheet ( Hoja de datos )
| Número de pieza | PT5326 | |
| Descripción | Filter-free Class-D Audio Power Amplifier | |
| Fabricantes | Powtech | |
| Logotipo |  |
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PT5326
2.0 W/CH Stereo
Filter-free Class-D Audio Power Amplifier
GENERAL DESCRIPTION
The PT5326 is a dual 2.0W high efficiency filterless
class D audio power amplifier in a 4mm×4mm QFN-16
and SMD-16 or SOP16 package that requires only five
external components.
The PT5326 uses Class D architecture, the device
delivers up to 2.0W while offering up to 80%
efficiency.
The PT5326 offers a spread-spectrum PWM
modulation scheme that reduces EMI-radiated
emissions due to the modulation frequency. The device
utilizes a fully differential architecture, a full bridged
output, and comprehensive click-and-pop suppression.
The PT5326 features high 60dB PSRR, low 0.11%
THD+N. Thermal-overload protection prevents the
device from being damaged during a fault condition.
The PT5326 is ideal for cellular handsets and PDA
applications.
FEATURES
z 2.0 W/Ch into 4 Ω at 5 V , THD<10%
z Selectable Gain of 6, 12, 18, and 24 dB
z 6mA Quiescent Current
z 0.5µA Shutdown Current
z Spread-Spectrum PWM Modulation
z Only Five External Components
z Thermal Protection
z Space Saving Packages: SMD16 QFN16,SOP16
APPLICATIONS
z Wireless or Cellular Handsets
z Portable DVD
z Notebook PC
z Portable Radio
z Portable Gaming
z Educational Toys
z USB Speakers
ORDERING INFORMATION
PACKAGE
QFN16
TEMPERATURE
RANGE
-40 oC to 85 oC
ORDERING PART
NUMBER
PT5326EQFN
SOP16
-40 oC to 85 oC
PT5326ESOP
Note:
xxxxxX
Assembly Factory Code
Lot Number
TRANSPORMEDIA
Tape and Reel
5000units
Tape and Reel
2500units
MARKING
PT5326
xxxxxX
PT5326
xxxxxX
TYPICAL APPLICATION CIRCUIT
INL
C INL1
C INL2
INR
C INR1
C INR2
IN L +
IN L -
PVDD
AVDD
PGND
AGND
INR+
IN R -
PT5326
OUTL+
OUTL-
OUTR+
OULR-
To Battery
CS
10uF
note4
S hutdow n
Control
G ain
C o n tro l
PIN ASSIGNMEN
U1
1 AGND
2 AVDD
3
INR+
4
G0
5 INR-
6 INL-
7 INL+
8 G1
SDR
OUTR+
OUTR-
PGND
PVDD
OUTL-
OUTL+
SDL
16
15
14
13
12
11
10
9
SOP16 (Top View)
China Resources Powtech (Shanghai) Limited
PT5326_DS Rev EN_1.4
WWW.CRPOWTECH.COM
Page 1
1 page  
PT5326
2.0 W/CH Stereo
Filter-free Class-D Audio Power Amplifier
ELECTRICAL CHARACTERISTICS (continued)
SYMBOL PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
fSW
Switching frequency
VDD = 2.5V to 5.5V
G0, G1 = 0.35V
400 500 600 kHz
5.5 6 6.5
Closed-loop voltage
gain
G0 = VDD, G1 = 0.35V
G0 = 0.35V, G1 = VDD
11.5 12 12.5 dB
17.5 18 18.5
G0, G1 = VDD
23.5 24 24.5
Output power
PO (per channel)
RL = 8Ω
RL = 4Ω
VDD = 5.0V, f = 1kHz,
THD = 10%
VDD = 3.6V, f = 1kHz,
THD = 10%
VDD = 5.0V, f = 1kHz,
THD = 10%
1.5
0.8
2.0
W
THD+N
Total harmonic
distortion plus noise
PO = 1W, VDD = 5V, AV = 6dB,
f = 1kHz
PO = 0.5W, VDD = 5V, AV = 6dB,
f = 1kHz
0.14
%
0.11
%
Xtalk
PSRR
CMRR
Channel crosstalk
Supply ripple
rejection ratio
Common mode
rejection ratio
PO = 0.5 W, f = 1 kHz
VDD = 5V, AV = 6dB, f = 217Hz
VDD = 3.6V, AV = 6dB, f = 217Hz
VDD = 3.6V, VIC = 1Vpp,
f = 217Hz
-70 dB
-60 dB
-60
-60 dB
Av = 6dB
28.2
Input impedance
Av = 12dB
Av = 18dB
17.76
11.15
kΩ
Av = 24dB
5.89
Start-up time from
shutdown
VDD = 3.6V
1.5 ms
SNR
Signal to Noise Ratio
VDD = 5V, PO = 1W
VDD = 3.6V, f =
20 to 20 kHz, No weighting
90 dB
80
en Output voltage noise Inputs are ac
µV
grounded, AV = A weighting
6dB
50
Note 6: Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Range. Specifications are
not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device
performance.
Note 7: Bypass capacitor Cs can’t be smaller than 10uF and closes to the chip to prevent the vdd’s glitch from
exceeding 6.5V. Selecting 0805 or larger volume package type’s capacitor is preferable.
China Resources Powtech (Shanghai) Limited
PT5326_DS Rev EN_1.4
WWW.CRPOWTECH.COM
Page 5
5 Page 
PT5326
2.0 W/CH Stereo
Filter-free Class-D Audio Power Amplifier
THD+N vs Output Power
20
10 VDD = 5 V
5
RL = 8 ohm
f = 1k Hz
AV = 24 dB
1
THD+N vs Output Power
20
10 VDD = 2.5 V
5
RL = 4 ohm
f = 1k Hz
AV = 6 dB
1
0.1 0.1
0.011.5
6.25 14 25 39 100 156 6241400
Output Power (mW)
THD+N vs Output Power
20
10 VDD = 2.5 V
5
RL = 8 ohm
f = 1k Hz
AV = 6 dB
1
0.015
20 45 80 125 245 500
Output Power (mW)
THD+N vs Output Power
20
10
5
VDD = 2.5 V
RL = 4 ohm
f = 1k Hz
AV = 24 dB
1
0.1 0.1
0.012.5
10 22.5 40 62.5122.5 250
Output Power (mW)
THD+N vs Output Power
20
10
5
VDD = 2.5 V
RL = 8 ohm
f = 1k Hz
AV = 24 dB
1
0.01 3
12.5 28 50 78
312
Output Power (mW)
THD+N vs Output Power
20
10
5
VDD = 3.6 V
RL = 4 ohm
f = 1k Hz
AV = 6 dB
1
0.1 0.1
0.011.5
6.25 14 25 39
156
Output Power (mW)
624
0.015
20 45 80 125 500
Output Power (mW)
2000
China Resources Powtech (Shanghai) Limited
PT5326_DS Rev EN_1.4
WWW.CRPOWTECH.COM
Page 11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet PT5326.PDF ] | |
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