lx1722 Microsemi Corporation, lx1722 Datasheet - Page 4

• Manufacturer Part Number: lx1722
• Description: Class-d Stereo Power Amplifier Controller
• Manufacturer: Microsemi Corporation

Copyright © 2001
Rev. 1.2a,2004-06-10
Unless otherwise specified, the following specifications apply over the operating ambient temperature -20°C < T
Test conditions: RPWM = 34.8k, CPWM = 100pF, VDD = PVDD = 15V
Evaluation Module (See LXE1721)
Supply Voltage
Power Supply Rejection Ratio
Output Power (Per Channel)
Efficiency
Total Harmonic Distortion Plus Noise
Signal-To-Noise Ratio
Oscillator Section
Oscillator Frequency
Charge Current
Discharge Current
Oscillator Peak Voltage
Oscillator Valley Voltage
Voltage Stability
Temperature Stability
Error Amplifier
Input Offset Voltage
DC Open Loop Gain
Unity Gain Bandwidth
High Output Voltage
Low Output Voltage
Input Bias Current
Input Amplifier
Stage Gain
Output Voltage, High
Output Voltage, Low
Input Impedance
Feedback Amplifier
Stage Gain
Input Impedance
I N T E G R A T E D
Parameter
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
LX1721
LX1722
LX1721
LX1722
LX1721
LX1722
P R O D U C T S
E L E C T R I C A L C H A R A C T E R I S T I C S
Symbol
THD+N
UGBW
PSRR
SNR
F
V
I
V
V
V
V
A
V
V
I
V
P
CHG
I
OSC
DIS
VAL
IN
DD
PK
OL
OH
OL
OH
OL
IO
O
Linfinity Microelectronics Division
Microsemi
V
to 20kHz
V
10Hz to 22kHz
V
10Hz to 22kHz
V
V
f
f
R
(varies with V
(varies with V
(varies with V
(varies with V
V
T
I
I
V
Set by Internal Resistors
I
I
Set by Internal Resistors
Set by Internal Resistors
IN
IN
OUT
OUT
OUT
OUT
A
IN
IN
IN
IN
IN
DD
IN
L
= 1kHz, P
= 20Hz to 20kHz, P
= 0
= 4Ω, P
= 15V, V
= 15V, R
= 25V, R
= 15V, f
= 15V, f
= 1V to 4V
= 8V to 25V
= -100µA
= +100µA
= -100µA
= +100µA
O
Test Conditions
C to 70
Class-D Stereo Power Amplifier Controller
O
IN
IN
RIPPLE
L
L
= 1W
O
=4Ω, THD+N=1%,
=4Ω, THD+N=1%,
= 1kHz, P
= 1kHz, P
DD
DD
DD
DD
= 1W
O
C
pin voltage)
pin voltage)
pin voltage)
pin voltage)
AudioMAX™
= 1V
O
RMS
O
O
= 1W
= 10W
= 20W
, 20Hz
P
RODUCTION
3.465
Min
3.85
3.5
7
7
89
56
LX1721 / 1722
Typ
-225
450
225
180
-70
.06
3.6
1.4
0.6
1.0
3.5
250
400
25
60
82
85
81
60
5
7
1
91
57
A
< 70°C (NOTE 2).
LX1721 / 1722
3.535
Max
100
1.3
15
25
.2
2
2
58
93
Units
‘MHz
‘mV/V
‘mV/V
kHz
dBr
‘mV
‘mV
V/V
‘kΩ
dB
µA
µA
dB
µA
W
%
%
%
%
kΩ
kΩ
V
V
V
V
V
V
Page 4