max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 5

• Manufacturer Part Number: max9791
• Description: Windows Vista-compliant Class D Speaker Amplifiers With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS (continued)
(V
wise specified. R
unless otherwise noted. Typical values are at T
Amplifiers with DirectDrive Headphone Amplifiers
COM Input Range
Common-Mode Rejection Ratio
Slew Rate
Charge-Pump Frequency
BEEP INPUT (LDO_EN = 1)
Beep Signal Minimum Frequency
Amplifier Turn-On Time
Amplifier Hold Time
LOW-DROPOUT LINEAR REGULATOR
Regulator Input Voltage Range
LDO Ground Current
Output Current
Current Limit
Crosstalk
Output-Voltage Accuracy
Dropout Voltage
Startup Time
Line Regulation
Load Regulation
Ripple Rejection
Output-Voltage Noise
DIGITAL INPUTS (SPKR_EN, HP_EN, LDO_EN, BEEP)
Input-Voltage High
Input-Voltage Low
Input Bias Current
AVDD
= V
PARAMETER
PVDD
IN1
= V
Windows Vista-Compliant Class D Speaker
= 20kΩ (A
_______________________________________________________________________________________
HPVDD
= 5V, V
VSPKR
GND
t
SYMBOL
= 12dB), R
HOLDBEEP
t
ONBEEP
CMRR
V
V
f
f
V
V
I
I
V
BEEP
= V
OSC
AVDD
I
COM
SR
LDO
OUT
LIM
INH
INL
DO
PGND
A
= +25°C.) (Note 3)
IN2
Inferred from CMRR test
-300mV < V
Four-cycle count
Inferred from line regulation,
V
Inferred from load regulation
Speaker to LDO, V
f =1kHz, I
= 1.2W, R
V
V
V
T
V
5.5V,
I
V
120mA
V
V
I
20Hz to 20kHz, C
I
= V
LDO_OUT
LDO_OUT
LDO_OUT
A
LDO_OUT
LDO_OUT
LDO_OUT
LDO_OUT
AVDD
LDO_OUT
RIPPLE
LDO_OUT
= 40.2kΩ (A
= +25°C (Note 7)
CPGND
= 4.5V to
= 200mV
LDO_OUT
L
= 1mA
= 10mA
= 120mA
= 4.75V
= 4.75V
= 3.3V
= 4.75V,
= 4.75V, 1mA < I
= 4.75V
= 0, I
= 8Ω
COM
VHP
CONDITIONS
LDO_OUT
< +300mV
P-P
LDO_OUT
LDO_OUT
= 10mA, speaker P
= 0dB), C
,
V
V
LDO_OUT
LDO_OUT
I
I
f = 1kHz
f = 10kHz
OUT
OUT
= 0, C
= 2 x 1µF,
LDO_OUT
= 4.75V,
IN1
= 50mA
= 120mA
= 470nF, C
LDO
= 4.75V
= 3.3V
<
= 2µF, C1 = C2 = 1µF. R
OUT
IN2
-300
215
221
-4.8
= C
MIN
4.5
-4
-1
2
COM
= 1µF, T
0.25
0.22
TYP
0.38
400
246
300
106
130
530
-80
1.5
0.2
46
30
56
40
60
L
= ∞, unless other-
A
+300
MAX
±1.5
±1.5
+4.8
271
120
5.5
0.4
0.4
+4
+1
= T
MIN
to T
mV/mA
µV
UNITS
mV/V
V/µs
kHz
mV
mA
mA
mA
mV
ms
dB
dB
dB
Hz
µA
µs
µs
%
V
RMS
V
V
MAX
5
,