19-2136; Rev 1; 9/01
SC70/SOT23-8, 50mA I
OUT
, Rail-to-Rail I/O
Op Amps with Shutdown/Mute
General Description
The MAX4335–MAX4338 op amps deliver 40mW per
channel into 32Ω from ultra-small SC70/SOT23 pack-
ages making them ideal for mono/stereo headphone
drivers in portable applications. These amplifiers have
a 5MHz gain-bandwidth product and are guaranteed to
deliver 50mA of output current while operating from a
single supply of 2.7V to 5.5V.
The MAX4336 and the MAX4338 have a shutdown/mute
mode that reduces the supply current to 0.04µA per
amplifier and places the outputs in a high-impedance
state.
The MAX4335–MAX4338 have 90dB power-supply
rejection ratio (PSRR), eliminating the need for costly
pre-regulation in most audio applications. Both the
input voltage range and the output voltage swing
include both supply rails, maximizing dynamic range.
The MAX4335/MAX4336 single amplifiers are available
in ultra-small 6-pin SC70 packages. The MAX4337/
MAX4338 dual amplifiers are available in an 8-pin
SOT23 and a 10-pin µMAX package, respectively. All
devices are specified from -40°C to +85°C.
o
50mA Output Drive Capability
o
Low 0.003% THD (20kHz into 10kΩ)
o
Rail-to-Rail
®
Inputs and Outputs
o
2.7V to 5.5V Single-Supply Operation
o
5MHz Gain-Bandwidth Product
o
95dB Large-Signal Voltage Gain
o
90dB Power-Supply Rejection Ratio
o
No Phase Reversal for Overdrive Inputs
o
Ultra-Low Power Shutdown/Mute Mode
Reduces Supply Current to 0.04µA
Places Output in High-Impedance State
o
Thermal Overload Protection
Features
MAX4335–MAX4338
Ordering Information
PART
MAX4335EXT-T
MAX4336EXT-T
MAX4337EKA-T
MAX4337EUA
MAX4338EUB
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 SC70-6
6 SC70-6
8 SOT23-8
8 µMAX
10 µMAX
TOP
MARK
AAX
AAW
AAIK
—
—
________________________Applications
32Ω Headphone Drivers
Portable/Battery-Powered Instruments
Wireless PA Control
Hands-Free Car Phones
Transformer/Line Drivers
DAC/ADC Buffers
Pin Configurations appear at end of data sheet.
Typical Operating Circuit
V
CC
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
0.005
R
L
= 10kΩ,
V
CC
= 5V
V
OUT
= 2V
P-P
R3
C1
V
IN
R4
MAX4335
MAX4336
C2
THD + NOISE (%)
32Ω
0.004
0.003
R2
R1
C3
0.002
10
100
1k
FREQUENCY (Hz)
10k
100k
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________
Maxim Integrated Products
1
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.
SC70/SOT23-8, 50mA I
OUT
, Rail-to-Rail I/O
Op Amps with Shutdown/Mute
MAX4335–MAX4338
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to GND) ..................................-0.3V to +6V
All Other Pins to GND ....................(GND - 0.3V) to (V
CC
+ 0.3V)
Output Short-Circuit Duration to V
CC
or GND ............Continuous
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C) ...............245mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C).............727mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) .............444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 2.7V, GND = 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
∞
to V
CC
/2, V
SHDN
= V
CC,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
Operating Supply Voltage Range
Quiescent Supply Current (Per
Amplifier)
Input Offset Voltage
Input Bias Current
Input Offset Current
Differential Input Resistance
Input Common-Mode Voltage
Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Output Resistance
SYMBOL
V
CC
I
CC
V
OS
I
B
I
OS
R
IN(Diff)
V
CM
CMRR
PSRR
R
OUT
CONDITIONS
Inferred from PSRR Test
V
CC
= 5.5V
V
CC
= 2.7
V
CM
= GND to V
CC
V
CM
= GND to V
CC
V
CM
= GND to V
CC
|V
IN-
- V
IN+
| < 1.2V
|
VIN-
- V
IN+
| > 1.2V
Inferred from CMRR Test
V
CM
= GND to V
CC
V
CC
= 2.7V to 5.5V
AV
CL
= 1V/V
V
CC
= 5V: R
L
= 10kΩ
V
OUT
= 0.4V to 4.6V
Large-Signal Voltage Gain
A
VOL
V
CC
= 5V: R
L
= 100Ω
V
OUT
= 0.5V to 4.5V
V
CC
= 2.7V: R
L
= 32Ω
V
OUT
= 0.5V to 2.2V
V
CC
= 2.7V;
R
L
= 10kΩ
V
CC
= 2.7V;
R
L
= 32Ω
V
CC
= 5V;
R
L
= 10kΩ
V
CC
= 5V;
R
L
= 100Ω
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
70
62
GND
60
70
80
90
0.05
95
84
72
100
100
220
280
100
100
190
240
350
350
400
400
mV
dB
MIN
2.7
1.3
1.2
±0.6
±100
±7
500
8.4
V
CC
±3
±400
±30
TYP
MAX
5.5
1.8
UNITS
V
mA
mV
nA
nA
kΩ
V
dB
dB
Ω
Output Voltage Swing
V
OUT
2
_______________________________________________________________________________________
SC70/SOT23-8, 50mA I
OUT
, Rail-to-Rail I/O
Op Amps with Shutdown/Mute
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 2.7V, GND = 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
∞
to V
CC
/2, V
SHDN
= V
CC,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
V
CC
= 2.7V;
I
SOURCE
,
I
SINK
= 50mA
Output Drive
I
OUT
V
CC
= 5V;
I
SOURCE
,
I
SINK
= 50mA
Short-Circuit Current
SHDN
Logic Levels
SHDN
Leakage Current
Output Leakage Current in
Shutdown
Shutdown Supply Current
(Per Amplifier)
I
SC
V
IH
V
IL
I
IL
I
OUT(SHDN)
I
CC(SHDN)
Normal mode
Shutdown mode
V
CC
= 5V, GND < V
SHDN
< V
CC
V
CC
= 5V, V
SHDN
= 0, V
OUT
= 0,
V
CC
SHDN
= GND; V
CC
= 5V
0.01
<0.04
0.7 x V
CC
0.3 x V
CC
0.5
0.5
0.5
V
CC
- V
OH
V
OL
270
360
110
500
500
mA
V
µA
µA
µA
V
CC
- V
OH
V
OL
MIN
TYP
270
360
MAX
500
500
mV
UNITS
MAX4335–MAX4338
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 2.7V, GND = 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
∞
to V
CC
/2, V
SHDN
= V
CC,
T
A
= -40°C to +85°C,
unless otherwise noted.)
(Note 1)
PARAMETER
Operating Supply Voltage Range
Quiescent Supply Current (Per
Amplifier)
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Common-Mode Voltage
Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
SYMBOL
V
CC
I
CC
V
OS
I
B
I
OS
V
CM
CMRR
PSRR
CONDITIONS
Inferred from PSRR test
V
CC
= 5.5V
V
CM
= GND to V
CC
V
CM
= GND to V
CC
V
CM
= GND to V
CC
Inferred from CMRR test
V
CM
= GND to V
CC
V
CC
= 2.7V to 5.5V
V
CC
= 5V: R
L
= 100Ω,
V
OUT
= 0.6V to 4.4V
V
CC
= 2.7V: R
L
= 32Ω,
V
OUT
= 0.6V to 2.1V
GND
50
64
66
dB
56
MIN
2.7
TYP
MAX
5.5
2.25
±6
±600
±60
V
CC
UNITS
V
mA
mV
nA
nA
V
dB
dB
Large-Signal Voltage Gain
A
VOL
_______________________________________________________________________________________
3
SC70/SOT23-8, 50mA I
OUT
, Rail-to-Rail I/O
Op Amps with Shutdown/Mute
MAX4335–MAX4338
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 2.7V, GND = 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
∞
to V
CC
/2, V
SHDN
= V
CC,
T
A
= -40°C to +85°C,
unless otherwise noted.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
V
CC
= 2.7V;
R
L
= 32Ω
V
CC
= 5V;
R
L
= 100Ω
V
CC
= 2.7V;
I
SOURCE
,
I
SINK
= 50mA
Output Drive
I
OUT
V
CC
= 5V;
I
SOURCE
,
I
SINK
= 50mA
SHDN
Logic Level
SHDN
Leakage Current
Output Leakage Current in
Shutdown
Shutdown Supply Current
(Per Amplifier)
V
IH
V
IL
I
IL
I
OUT(SHDN)
Normal mode
Shutdown mode
V
CC
= 5V, GND < V
SHDN
< V
CC
V
CC
= 5V, V
SHDN
= 0, V
OUT
= 0;
V
CC
V
CC
- V
OH
V
OL
0.7 x V
CC
0.3 x V
CC
1
1
1
650
650
V
µA
µA
µA
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
MIN
TYP
MAX
500
500
400
400
650
650
mV
mV
UNITS
Output Voltage Swing
V
OUT
I
CC(SHDN)
V
SHDN
= 0; V
CC
= 5V
AC ELECTRICAL CHARACTERISTICS
(V
CC
= 2.7V, GND = 0, V
CM
= V
CC
/2, V
OUT
= V
CC
/2, V
SHDN
= V
CC,
A
VCL
= 1V/V, C
L
= 15pF, R
L
=
∞
to V
CC
/2
,
T
A
= +25°C,
unless
otherwise noted.)
PARAMETER
Gain-Bandwidth Product
Full-Power Bandwidth
Slew Rate
Phase Margin
Gain Margin
SYMBOL
GBWP
FBWP
SR
PM
GM
V
CC
= 5V, R
L
= 100Ω,
V
OUT
= 2V
P-P
Total Harmonic Distortion
THD
f = 1kHz
f = 10kHz
V
OUT
= 2V
P-P
, V
CC
= 5V
CONDITIONS
MIN
TYP
5
280
1.8
70
18
0.005
0.02
0.003
0.01
0.03
%
MAX
UNITS
MHz
kHz
V/µs
degrees
dB
V
CC
= 5V, R
L
= 10kΩ, V
OUT
= 2V
P-P
,
f = 10kHz
V
CC
= 2.7V;
f = 1kHz
R
L
= 32Ω,
f = 10kHz
V
OUT
= 2V
P-P
4
_______________________________________________________________________________________
SC70/SOT23-8, 50mA I
OUT
, Rail-to-Rail I/O
Op Amps with Shutdown/Mute
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V, GND = 0, V
CM
= V
CC
/2, V
OUT
= V
CC
/2, V
S HDN
= V
CC,
A
VCL
= 1V/V, C
L
= 15pF, R
L
=
∞
to V
CC
/2,
T
A
= +25°C,
unless
otherwise noted.)
PARAMETER
Settling Time to 0.01%
Crosstalk
Input Capacitance
Input Voltage-Noise Density
Input Current-Noise Density
Capacitive-Load Stability
Shutdown Time
Enable Time from Shutdown
Power-Up Time
t
SHDN
t
ENABLE
tON
MAX4335–MAX4338
SYMBOL
t
S
CT
C
IN
en
In
f = 10kHz
f = 1kHz
f = 10kHz
f = 1kHz
2V step
CONDITIONS
V
OUT
= 2V
P-P
; f = 1kHz
MIN
TYP
2
100
5
26
0.6
200
1
1
5
MAX
UNITS
µs
dB
pF
nV/√Hz
pA/√Hz
pF
µs
µs
µs
No sustained oscillation
Note 1:
All devices are 100% production tested at T
A
= +25°C. All limits over temperature are guaranteed by design.
__________________________________________Typical Operating Characteristics
(V
CC
= 2.7V, GND = 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
∞
to V
CC
/2, V
S HDN
= V
CC,
T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
MAX4335-8 toc01
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
MAX4335-8 toc02
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
900
800
SUPPLY CURRENT (pA)
700
600
500
400
300
200
100
0
V
CC
= 2.7V
V
CC
= 5.5V
MAX4335-8 toc03
1.4
2.3
MINIMUM OPERATING VOLTAGE (V)
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1000
SUPPLY CURRENT (mA)
1.3
V
CC
= 5.5V
1.2
V
CC
= 2.7V
1.1
1.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
1.5
-40
-15
10
35
60
85
TEMPERATURE (°C)
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
