MAX9724BETC+ Maxim Integrated Products, MAX9724BETC+ Datasheet - Page 3

• Manufacturer Part Number: MAX9724BETC+
• Description: IC AMP AUDIO .045W STER 12TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9724BETC+

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 63mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 12-TQFN Exposed Pad
• Product: General Purpose Audio Amplifiers
• Output Power: 42 mW
• Thd Plus Noise: 0.02 %
• Supply Current: 3.5 mA
• Maximum Power Dissipation: 1333 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 16 Ohms
• Minimum Operating Temperature: - 40 C
• Amplifier Class: AB
• No. Of Channels: 2
• Supply Voltage Range: 2.7V To 5.5V
• Load Impedance: 16ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• For Use With: MAX9724AEVKIT+ - EVALUATION KIT FOR MAX9724A/BMAX9724DEVKIT+ - KIT EVAL FOR MAX9724D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
(R
are at T
ELECTRICAL CHARACTERISTICS
(V
(R
are at T
Note 3: All specifications are 100% tested at T
Note 4: The amplifier inputs are AC-coupled to GND.
Note 5: Gain for the MAX9724A is adjustable.
Note 6: Measurement bandwidth is 22Hz to 22kHz.
Note 7: Test performed with a 32Ω resistive load connected to GND. Mode transitions are controlled by SHDN. K
Slew Rate
Capacitive Drive
Crosstalk
Charge-Pump Oscillator
Frequency
Click-and-Pop Level
DIGITAL INPUTS (SHDN)
Input-Voltage High
Input-Voltage Low
Input-Voltage High
Input-Voltage Low
Input Leakage Current
Quiescent Current
Shutdown Current
Power-Supply Rejection Ratio
(Note 4)
Output Power (TQFN)
Output Power (UCSP)
Total Harmonic Distortion Plus
Noise (TQFN) (Note 6)
Total Harmonic Distortion Plus
Noise (UCSP) (Note 6)
DD
IN
DD
IN
60mW, DirectDrive, Stereo Headphone Amplifier
= 20kΩ, R
= 20kΩ, R
= 5V, PGND = SGND, SHDN = 5V, C1 = C2 = 1µF, R
= 3V, PGND = SGND, SHDN = 3V, C1 = C2 = 1µF, R
A
A
as 20log[(peak voltage during mode transition, no input signal)/(peak voltage under normal operation at rated power level)].
Units are expressed in dB.
= +25°C, unless otherwise noted.) (Note 3)
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER
PARAMETER
F
F
= 30kΩ); for MAX9724B gain = -1.5V/V (internally set), T
= 30kΩ); for MAX9724B gain = -1.5V/V (internally set), T
with Low RF Susceptibility and Shutdown
_______________________________________________________________________________________
SYMBOL
SYMBOL
THD+N
THD+N
I
PSRR
P
P
SHDN
f
V
V
V
V
I
K
OSC
OUT
OUT
CC
SR
C
INH
INH
INL
INL
CP
L
A
= +25°C; temperature limits are guaranteed by design.
No sustained oscillations
L to R, R to L, f = 10kHz, R
P
R
A-weighted, 32 samples per
second (Notes 4, 7)
(TQFN only)
(TQFN only)
(UCSP only)
(UCSP only)
SHDN = SGND = PGND
f = 1kHz, 100mV
f = 20kHz, 100mV
R
R
R
R
R
R
R
R
R
R
OUT
L
L
L
L
L
L
L
L
L
L
L
= 32Ω, peak voltage,
= 32Ω, THD+N = 1%
= 16Ω, THD+N = 1%
= 32Ω, THD+N = 1%
= 16Ω, THD+N = 1%
= 1kΩ, V
= 32Ω, P
= 16Ω, P
= 1kΩ, V
= 32Ω, P
= 16Ω, P
= 15mW
L
L
OUT
OUT
OUT
OUT
OUT
OUT
= ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V
= ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V
CONDITIONS
CONDITIONS
P-P
= 2V
= 15mW, f
= 10mW, f
= 2V
= 15mW, f
= 10mW, f
P-P
RMS
RMS
A
A
, f
, f
= -40°C to +85°C, unless otherwise noted. Typical values
= -40°C to +85°C, unless otherwise noted. Typical values
L
IN
IN
IN
IN
IN
IN
= 16Ω,
= 1kHz
= 1kHz
= 1kHz
= 1kHz
= 1kHz
= 1kHz
Into shutdown
Out of
shutdown
MIN
MIN
190
1.4
2
0.003
TYP
TYP
0.05
0.03
0.06
0.04
0.06
100
270
-70
-67
-64
0.5
3.0
0.1
80
65
20
14
17
12
CP
level is calculated
MAX
MAX
400
0.8
0.9
±1
UNITS
UNITS
V/µs
kHz
mW
mW
mA
pF
dB
dB
µA
dB
µA
%
%
V
V
V
V
3