19-2386; Rev 2; 10/02
80mW, DirectDrive Stereo Headphone Driver
with Shutdown
General Description
The MAX4410 stereo headphone driver is designed for
portable equipment where board space is at a
premium. The MAX4410 uses a unique, patented,
DirectDrive architecture to produce a ground-refer-
enced output from a single supply, eliminating the need
for large DC-blocking capacitors, saving cost, board
space, and component height.
The MAX4410 delivers up to 80mW per channel into a
16Ω load and has low 0.003% THD + N. A high power-
supply rejection ratio (90dB at 1kHz) allows this device to
operate from noisy digital supplies without an additional
linear regulator. The MAX4410 includes
±8kV
ESD pro-
tection on the headphone outputs. Comprehensive click-
and-pop circuitry suppresses audible clicks and pops on
startup and shutdown. Independent left/right, low-power
shutdown controls make it possible to optimize power
savings in mixed mode, mono/stereo applications.
The MAX4410 operates from a single 1.8V to 3.6V supply,
consumes only 7mA of supply current, has short-circuit
and thermal overload protection, and is specified over the
extended -40°C to +85°C temperature range. The
MAX4410 is available in a tiny (2mm x 2mm x 0.6mm),
16-bump chip-scale package (UCSP™) and a 14-pin
TSSOP package.
Features
o
No Bulky DC-Blocking Capacitors Required
o
Ground-Referenced Outputs Eliminate DC-Bias
Voltages on Headphone Ground Pin
o
No Degradation of Low-Frequency Response Due
to Output Capacitors
o
80mW Per Channel into 16Ω
o
Low 0.003% THD + N
o
High PSRR (90dB at 1kHz)
o
Integrated Click-and-Pop Suppression
o
1.8V to 3.6V Single-Supply Operation
o
Low Quiescent Current
o
Independent Left/Right, Low-Power
Shutdown Controls
o
Short-Circuit and Thermal Overload Protection
o
±8kV
ESD-Protected Amplifier Outputs
o
Available in Space-Saving Packages
16-Bump UCSP (2mm x 2mm x 0.6mm)
14-Pin TSSOP
MAX4410
Ordering Information
PART
MAX4410EBE-T*
MAX4410EUD
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN/BUMP-
PACKAGE
16 UCSP-16
14 TSSOP
Applications
Notebooks
Cellular Phones
PDAs
MP3 Players
Web Pads
Portable Audio Equipment
*Future
product—contact factory for availability.
Functional Diagram
LEFT
AUDIO
INPUT
MAX4410
SHDNL
SHDNR
RIGHT
AUDIO
INPUT
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configurations and Typical Application Circuit appear
at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
80mW, DirectDrive Stereo Headphone Driver
with Shutdown
MAX4410
ABSOLUTE MAXIMUM RATINGS
PGND to SGND .....................................................-0.3V to +0.3V
PV
DD
to SV
DD .................................................................
-0.3V to +0.3V
PV
SS
to SV
SS
.........................................................-0.3V to +0.3V
PV
DD
and SV
DD
to PGND or SGND .........................-0.3V to +4V
PV
SS
and SV
SS
to PGND or SGND ..........................-4V to +0.3V
IN_ to SGND ..........................................................-0.3V to +0.3V
SHDN_
to SGND........................(SGND - 0.3V) to (SV
DD
+ 0.3V)
OUT_ to SGND ............................(SV
SS
- 0.3V) to (SV
DD
+ 0.3V)
C1P to PGND.............................(PGND - 0.3V) to (PV
DD
+ 0.3V)
C1N to PGND .............................(PV
SS
- 0.3V) to (PGND + 0.3V)
Output Short Circuit to GND or V
DD
...........................Continuous
Continuous Power Dissipation (T
A
= +70°C)
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ..........727mW
16-Bump UCSP (derate 15.2mW/°C above +70°C)....1212mW
Junction Temperature ......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Bump Temperature (soldering) (Note 1)
Infrared (15s) ...............................................................+220°C
Vapor Phase (60s) .......................................................+215°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device
can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recom-
mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow.
Preheating is required. Hand or wave soldering is not allowed.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(PV
DD
= SV
DD
= 3V, PGND = SGND = 0,
SHDNL
=
SHDNR
= SV
DD
, C1 = C2 = 2.2µF, R
IN
= R
F
= 10kΩ, R
L
=
∞,
T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
Supply Voltage Range
Quiescent Supply Current
Shutdown Supply Current
SYMBOL
V
DD
I
DD
I
SHDN
CONDITIONS
Guaranteed by PSRR test
One channel enabled
Two channels enabled
SHDNL
=
SHDNR
= GND
V
IH
SHDN_
Thresholds
V
IL
SHDN_
Input Leakage Current
SHDN_
to Full Operation
CHARGE PUMP
Oscillator Frequency
AMPLIFIERS
Input Offset Voltage
Input Bias Current
Power-Supply Rejection Ratio
V
OS
I
BIAS
1.8V
≤
V
DD
≤
3.6V
PSRR
200mV
P-P
ripple
THD + N = 1%
DC
f
RIPPLE
= 1kHz
f
RIPPLE
= 20kHz
R
L
= 32Ω
R
L
= 16Ω
40
Input AC-coupled, R
L
= 32Ω
-100
75
90
90
55
65
80
mW
dB
0.5
2.4
+100
mV
nA
f
OSC
272
320
368
kHz
t
SON
-1
175
0.7 x
SV
DD
0.3 x
SV
DD
+1
µA
µs
MIN
1.8
4
7
6
11.5
10
TYP
MAX
3.6
UNITS
V
mA
µA
V
Output Power
P
OUT
2
_______________________________________________________________________________________
80mW, DirectDrive Stereo Headphone Driver
with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(PV
DD
= SV
DD
= 3V, PGND = SGND = 0,
SHDNL
=
SHDNR
= SV
DD
, C1 = C2 = 2.2µF, R
IN
= R
F
= 10kΩ, R
L
=
∞,
T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Slew Rate
Maximum Capacitive Load
Crosstalk
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
ESD Protection
Human body model (OUTR, OUTL)
SYMBOL
CONDITIONS
R
L
= 32Ω,
P
OUT
= 25mW
R
L
= 16Ω,
P
OUT
= 50mW
MIN
TYP
0.003
%
0.003
95
0.8
No sustained oscillations
R
L
= 16Ω, P
OUT
= 1.6mW, f
IN
= 10kHz
300
70
140
15
±8
dB
V/µs
pF
dB
°C
°C
kV
MAX
UNITS
MAX4410
THD + N
f
IN
= 1kHz
SNR
SR
C
L
R
L
= 32Ω, P
OUT
= 20mW, f
IN
= 1kHz
Note 2:
All specifications are 100% tested at T
A
= +25°C; temperature limits are guaranteed by design.
Typical Operating Characteristics
(
C1 = C2 = 2.2µF, THD + N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.
)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
V
DD
= 3V
A
V
= -1V/V
R
L
= 16Ω
0.1
THD + N (%)
THD + N (%)
P
OUT
= 25mW
P
OUT
= 50mW
P
OUT
= 10mW
0.1
MAX4410 toc01
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
V
DD
= 3V
A
V
= -2V/V
R
L
= 16Ω
P
OUT
= 10mW
THD + N (%)
0.01
MAX4410 toc02
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
V
DD
= 3V
A
V
= -1V/V
R
L
= 32Ω
MAX4410 toc03
1
0.1
P
OUT
= 5mW
P
OUT
= 10mW
P
OUT
= 25mW
0.01
0.01
0.001
P
OUT
= 50mW
P
OUT
= 25mW
0.0001
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
1k
FREQUENCY (Hz)
10k
100k
0.001
10
100
1k
FREQUENCY (Hz)
10k
100k
0.001
_______________________________________________________________________________________
3
80mW, DirectDrive Stereo Headphone Driver
with Shutdown
MAX4410
Typical Operating Characteristics (continued)
(
C1 = C2 = 2.2µF, THD + N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.
)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX4410 toc04
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
V
DD
= 1.8V
A
V
= -1V/V
R
L
= 16Ω
0.1
THD + N (%)
THD + N (%)
P
OUT
= 5mW
P
OUT
= 10mW
0.1
MAX4410 toc05
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
V
DD
= 1.8V
A
V
= -2V/V
R
L
= 16Ω
MAX4410 toc06
1
V
DD
= 3V
A
V
= -2V/V
R
L
= 32Ω
0.1
THD + N (%)
P
OUT
= 5mW
0.01
P
OUT
= 10mW
P
OUT
= 5mW
0.01
0.01
P
OUT
= 10mW
P
OUT
= 25mW
0.001
10
100
1k
FREQUENCY (Hz)
10k
100k
0.001
10
100
P
OUT
= 20mW
0.001
1k
FREQUENCY (Hz)
10k
100k
10
100
P
OUT
= 20mW
1k
FREQUENCY (Hz)
10k
100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX4410 toc07
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX4410 toc08
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
V
DD
= 3V
A
V
= -1V/V
R
L
= 16Ω
f
IN
= 20Hz
MAX4410 toc09
1
V
DD
= 1.8V
A
V
= -1V/V
R
L
= 32Ω
0.1
THD + N (%)
P
OUT
= 20mW
P
OUT
= 10mW
0.01
P
OUT
= 5mW
1
V
DD
= 1.8V
A
V
= -2V/V
R
L
= 32Ω
0.1
100
10
THD + N (%)
THD + N (%)
1
OUTPUTS IN
PHASE
OUTPUTS
180° OUT OF
PHASE
P
OUT
= 5mW
0.01
0.1
P
OUT
= 10mW
0.01
P
OUT
= 20mW
ONE
CHANNEL
0
50
100
150
200
0.001
10
100
1k
FREQUENCY (Hz)
10k
100k
0.001
10
100
1k
FREQUENCY (Hz)
10k
100k
0.001
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc11
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
V
DD
= 3V
A
V
= -2V/V
R
L
= 16Ω
f
IN
= 20Hz
OUTPUTS IN
PHASE
OUTPUTS
180° OUT OF
PHASE
MAX4410 toc12
100
V
DD
= 3V
A
V
= -1V/V
R
L
= 16Ω
f
IN
= 1kHz
100
V
DD
= 3V
A
V
= -1V/V
R
L
= 16Ω
f
IN
= 10kHz
100
10
10
10
THD + N (%)
THD + N (%)
THD + N (%)
1
OUTPUTS IN
PHASE
OUTPUTS
180° OUT OF
PHASE
1
OUTPUTS IN
PHASE
OUTPUTS
180° OUT OF
PHASE
ONE
CHANNEL
1
0.1
0.1
0.1
0.01
0.001
0
50
100
ONE
CHANNEL
150
200
0.01
0.001
0
50
100
150
200
0.01
0.001
0
50
100
ONE
CHANNEL
150
200
OUTPUT POWER (mW)
OUTPUT POWER (mW)
OUTPUT POWER (mW)
4
_______________________________________________________________________________________
80mW, DirectDrive Stereo Headphone Driver
with Shutdown
Typical Operating Characteristics (continued)
(
C1 = C2 = 2.2µF, THD + N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.
)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc13
MAX4410
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc14
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
V
DD
= 3V
OUTPUTS IN
A
V
= -1V/V
PHASE
R
L
= 32Ω
f
IN
= 20Hz
ONE
CHANNEL
OUTPUTS
180° OUT OF
PHASE
MAX4410 toc15
100
V
DD
= 3V
A
V
= -2V/V
R
L
= 16Ω
f
IN
= 1kHz
OUTPUTS IN
PHASE
OUTPUTS
180° OUT OF
PHASE
100
V
DD
= 3V
A
V
= -2V/V
R
L
= 16Ω
f
IN
= 10kHz
OUTPUTS IN
PHASE
100
10
1
10
10
THD + N (%)
THD + N (%)
1
1
THD + N (%)
0.1
0.1
OUTPUTS
180° OUT OF
PHASE
ONE
CHANNEL
0.1
0.01
0.01
ONE
CHANNEL
0.001
0
50
100
150
200
OUTPUT POWER (mW)
0.01
0.001
0
50
100
0.001
0.0001
150
200
0
25
50
75
100
125
OUTPUT POWER (mW)
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc16
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc17
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
V
DD
= 3V
A
V
= -1V/V
R
L
= 32Ω
f
IN
= 20Hz
OUTPUTS IN
PHASE
MAX4410 toc18
100
V
DD
= 3V
A
V
= -1V/V
R
L
= 32Ω
f
IN
= 1kHz
OUTPUTS IN
PHASE
100
V
DD
= 3V
A
V
= -1V/V
R
L
= 32Ω
f
IN
= 10kHz
OUTPUTS IN
PHASE
100
10
10
10
THD + N (%)
THD + N (%)
1
OUTPUTS
180° OUT OF
PHASE
THD + N (%)
1
OUTPUTS
180° OUT OF
PHASE
1
OUTPUTS
180° OUT OF
PHASE
0.1
ONE
CHANNEL
0.1
0.1
ONE
CHANNEL
ONE
CHANNEL
0.01
0.001
0
0.01
0.001
25
50
75
100
125
0
25
50
75
100
125
OUTPUT POWER (mW)
OUTPUT POWER (mW)
0.01
0.001
0
25
50
75
100
125
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc19
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX4410 toc20
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
V
DD
= 1.8V
A
V
= -1V/V
R
L
= 16Ω
f
IN
= 20Hz
OUTPUTS IN
PHASE
MAX4410 toc21
100
V
DD
= 3V
A
V
= -2V/V
R
L
= 32Ω
f
IN
= 1kHz
OUTPUTS IN
PHASE
100
V
DD
= 3V
A
V
= -2V/V
R
L
= 32Ω
f
IN
= 10kHz
OUTPUTS IN
PHASE
100
10
10
10
THD + N (%)
THD + N (%)
1
OUTPUTS
180° OUT OF
PHASE
1
OUTPUTS
180° OUT OF
PHASE
ONE
CHANNEL
THD + N (%)
1
OUTPUTS
180° OUT OF
PHASE
ONE
CHANNEL
0
10
20
30
40
50
60
0.1
ONE
CHANNEL
0.1
0.1
0.01
0.001
0
0.01
0.001
0.01
0.001
0
25
50
75
100
125
OUTPUT POWER (mW)
25
50
75
100
125
OUTPUT POWER (mW)
OUTPUT POWER (mW)
_______________________________________________________________________________________
5
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