LX1708 Datasheet, PDF (4/18 Pages) Microsemi Corporation – 15+15W Stereo Filterless Class-D Amplifier

LX1708
®
15+15W Stereo Filterless Class-D Amplifier
TM
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature -40°C < T_A < 85°C except where
otherwise noted and the following test conditions: P_VDD = 12V, P_VSS = A_VSS = 0V, V5V = 5V, R_OSC = 25KΩ
Parameter
` OSCILLATOR
Oscillator Frequency
Temperature Stability
POWER SUPPLY
Supply Voltage
UVLO
UVLO Hysteresis
+5V Supply
UVLO
UVLO Hysteresis
Stand-By Current
Operating Current
Stand-By Current
Operating Current
Power Supply Rejection Ratio
Reference Voltage¹
GAIN
Stage Gain @ 0dB Volume
Mute Gain @ minimum volume
OFFSET
Output DC Offset
INPUT STAGE
Input Resistance
Common Mode Voltage
OUTPUT STAGE
MOSFET On Resistance
THERMAL
Thermal Shut Off Junction
Temperature
Hystersis
MUTE / STBY / MASTER
MUTE Threshold
STBY Threshold
STBY To Output Enable
Power On Reset Delay
Note 1: Not ATE Tested
Symbol
Test Conditions
F_OSC
Varies with ROSC resistor value, value shown is
for default conditions. R = 25K
T_A = 0°C to 70°C
T_A = -40°C to 125°C
PVDD
PVDD
PVDD
V5V
V5V
V5V
I_QQ
I_QQ
I_QQ5V5
IQQ5V5
PSRR
VREF
Start-up Voltage
Start-up Voltage
For PVDD, STBY high
For PVDD, STBY low, Mute high
For 5V5, STBY high
For 5V5, STBY low, Mute high
For PVDD
C bypass = 1µF
G
G_MUTE
f = 1KHz
Mute active, Input shorted
V_OFF
Measured Differentially. OUT1- to OUT1+
OUT2- to OUT2+
R_IN
V_CM
LX1708
Units
Min Typ Max
300
KHz
5
%
8
%
5.0
12
15
V
4.50 4.90
V
500
mV
4.5
5.5
V
4.25 4.50
V
250
mV
10
50
µA
10
30
mA
10
µA
7
15
mA
55
dB
2.25
V
20
V/V
0.01
V/V
100
mV
22
KΩ
2.25
V
R_DSON
IDS = 200mA
Mute Mode
After Power on Reset Pulse, Not Quick Mode
280
mΩ
150
°C
25
°C
V5V 2
V
V5V 2
V
16384
Clocks
0.20 0.30 3.8
mS
Note: Functionality over the -40°C to +85°C operating range is assured by design characterization and correlation.
Caution: Power Up/Down Sequencing
Power-on: Apply V5V w/STBY=V5V. Then apply PVDD. Then bring STBY low.
Power-off: Bring STBY high such that STBY=V5V. Then shut off PVDD. Then shut off V5V.
Copyright © 2004
Rev.1.2, 2007-01-05
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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