Page 1
General Description
The MAX4465–MAX4469 are micropower op amps optimized for use as microphone preamplifiers. They provide the ideal combination of an optimized gain
bandwidth product vs. supply current, and low voltage
operation in ultra-small packages. The MAX4465/
MAX4467/MAX4469 are unity-gain stable and deliver a
200kHz gain bandwidth from only 24µA of supply current. The MAX4466/MAX4468 are decompensated for a
minimum stable gain of +5V/V and provide a 600kHz
gain bandwidth product. In addition, these amplifiers
feature Rail-to-Rail®outputs, high A
VOL
,
plus excellent
power-supply rejection and common-mode rejection
ratios for operation in noisy environments.
The MAX4467/MAX4468 include a complete shutdown
mode. In shutdown, the amplifiers’ supply current is
reduced to 5nA and the bias current to the external
microphone is cut off for ultimate power savings. The
single MAX4465/MAX4466 are offered in the ultra-small
5-pin SC70 package, while the single with shutdown
MAX4467/MAX4468 and dual MAX4469 are available in
the space-saving 8-pin SOT23 package.
Applications
Microphone Preamplifiers
Hearing Aids
Cellular Phones
Voice-Recognition Systems
Digital Dictation Devices
Headsets
Portable Computing
Features
o +2.4V to +5.5V Supply Voltage Operation
o Versions with 5nA Complete Shutdown Available
(MAX4467/MAX4468)
o Excellent Power-Supply Rejection Ratio: 112dB
o Excellent Common-Mode Rejection Ratio: 126dB
o High A
VOL
: 125dB (RL= 100kΩ)
o Rail-to-Rail Outputs
o Low 24µA Quiescent Supply Current
o Gain Bandwidth Product:
200kHz (MAX4465/MAX4467/MAX4469)
600kHz A
V
≥ 5 (MAX4466/MAX4468)
o Available in Space-Saving Packages
5-Pin SC70 (MAX4465/MAX4466)
8-Pin SOT23 (MAX4467/MAX4468/MAX4469)
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
19-1950; Rev 2; 6/12
1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Ordering Information continued at end of data sheet.
Pin Configurations
Typical Operating Circuit
Pin Configurations continued at end of data sheet.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
TOP VIEW
GND
IN+
+
1
MAX4465
2
MAX4466
3
IN-
5
V
CC
OUT
4
PART TEMP RANGE PIN-PACKAGE
MAX4465EXK+T -40°C to +85°C 5 SC70
MAX4465EUK+T -40°C to +85°C 5 SOT23
MAX4466EXK+T -40°C to +85°C 5 SC70
MAX4466EUK+T -40°C to +85°C 5 SOT23
V
CC
MAX4467
MAX4468
SHDN
OUT
R
C
C
BYPASS
BIAS
IN
R
BIAS
C
BIAS
R
IN
R
R
DC
DC
MIC_BIAS
IN+
IN-
GND
SC70/SOT23
MICROPHONE
CAPSULE
MAX4467/MAX4468 TYPICAL OPERATING CIRCUIT WITH
COMPLETE SHUTDOWN
R
FB
Page 2
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
2
ABSOLUTE MAXIMUM RATINGS
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.
Supply Voltage (VCCto GND)................................................+6V
All Other Pins to GND.................................-0.3V to (V
CC
+ 0.3V)
Output Short-Circuit Duration
OUT Shorted to GND or V
CC
.................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 2.5mW/°C above +70°C) .............200mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C) ...........571mW
8-Pin SOT23 (derate 5.3mW/°C above +70°C) ...........421mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
ELECTRICAL CHARACTERISTICS
(VCC= +5V, VCM= 0V, V
OUT
= VCC/2, RL= ∞ to VCC/2, SHDN = GND (MAX4467/MAX4468 only). TA= T
MIN
to T
MAX
, unless other-
wise noted. Typical values specified at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
Supply Current
(Per Amplifier)
Supply Current in Shutdown I
Input Offset Voltage V
Input Bias Current I
Input Offset Current Range I
Input Common-Mode Range V
C om m on- M od e Rej ecti on Rati o CMRR -0.1V ≤ VCM ≤ VCC - 1V 80 126 dB
Open-Loop Gain A
Output Voltage Swing High V
Output Voltage Swing Low V
Output Short-Circuit Current To either supply rail 15 mA
Output Leakage Current
in Shutdown
SHDN Logic Low V
SHDN Logic High V
SHDN Input Current (Note 2) 2 25 nA
Gain Bandwidth Product GBWP
SHDN
Inferred from PSRR test 2.4 5.5 V
CC
I
TA = +25°C2448
CC
TA = T
SHDN = VCC (Note 2) 5 50 nA
OS
VCM = -0.1V ±2.5 ±100 nA
B
VCM = -0.1V ±1 ±15 nA
OS
Inferred from CMRR test -0.1 V
CM
2.4V ≤ V
to T
MAX
MIN
≤ 5.5V 80 112
CC
MAX4465/MAX4467/MAX4469, f = 3.4kHz 75Power-Supply Rejection Ratio PSRR
MAX4466/MAX4468, f = 3.4kHz 80
R
= 100kΩ to VCC/2,
L
0.05V ≤ V
VOL
R
L
0.1V ≤ V
VCC - V
I
OH
OL
SHDN = VCC, 0 ≤ V
= 10kΩ to VCC/2,
≤ VCC - 0.05V
OUT
≤ V
OUT
I
OH
CC
- 0.1V
OUT
(Notes 2, 3)
(Note 2) V
IL
(Note 2) V
IH
MAX4465/MAX4467/MAX4469 200
MAX4466/MAX4468 600
60
±1 ±5mV
- 0.1 V
CC
125
80 95
RL = 100kΩ 10
RL = 10kΩ 16 50
RL = 100kΩ 10
RL = 10kΩ 14 50
≤ V
;
CC
CC
±0.5 ±100 nA
✕
0.3 V
CC
✕
0.7 V
µA
dB
dB
mV
mV
kHz
Page 3
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
3
-140
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
MAX4465/MAX4467/MAX4469
GAIN AND PHASE vs. FREQUENCY (NO LOAD)
FREQUENCY (Hz)
10.1 1k 10k 100k10 100 1M
GAIN (dB)/PHASE (DEGREES)
MAX4465-69 toc01
-160
-140
-120
-100
-80
-60
-40
0
-20
20
40
60
80
100
120
140
MAX4466/MAX4468 GAIN AND PHASE
vs. FREQUENCY (NO LOAD)
FREQUENCY (Hz)
GAIN (dB)/PHASE (DEGREES)
MAX4465-69 toc02
1 1k 10k 100k10 100 1M
-140
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
MAX4465/MAX4467/MAX4469
GAIN AND PHASE vs. FREQUENCY (C
L
= 100pF)
FREQUENCY (Hz)
10.1 1k 10k 100k10 100 1M
GAIN (dB)/PHASE (DEGREES)
MAX4465-69 toc03
Note 1: All specifications are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2: Shutdown mode is available only on the MAX4467/MAX4468.
Note 3: External feedback networks not considered.
ELECTRICAL CHARACTERISTICS (continued)
(VCC= +5V, VCM= 0V, V
OUT
= VCC/2, RL= ∞ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= T
MIN
to T
MAX
, unless other-
wise noted. Typical values specified at T
A
= +25°C.) (Note 1)
Typical Operating Characteristics
(VCC= +5V, VCM= 0V, V
OUT
= VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Channel-to-Channel Isolation MAX4469 only, f = 1kHz 85 dB
Phase Margin Ø
Gain Margin R
Slew Rate SR Output step = 4V
Input Noise Voltage Density e
Total Harmonic Distortion THD
Capacitive Load Stability C
SHDN Delay Time t
Enable Delay Time t
Power-On Time t
Bias Switch On-Resistance R
= 100kΩ 70
R
M
L
= 100kΩ 20 dB
L
MAX4465/MAX4467/
MAX4469,
A
= +1
V
MAX4466/MAX4468,
A
= +5
V
f = 1kHz 80 nV/√Hz
n
M AX 4465/M AX 4467/
M AX 4469
MAX4466/MAX4468 0.03
LOAD
SHDN
EN
ON
S
f = 1kHz, R
V
OUT
L
= 2Vp-p
= 10kΩ,
MAX4465/MAX4467/MAX4469, AV = +1 100
MAX4466/MAX4468, AV = +5 100
(Note 2) 1 µs
(Note 2) 50 µs
(Note 2) 40 µs
IS = 5mA (Note 2) 20 500 Ω
45
300
0.02
d egr ees
mV/µs
%
pF
Page 4
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
4
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
FREQUENCY (Hz)
10 1k 10k 100k100 1M
PSRR (dB)
-10
-130
-110
-90
-70
-50
-30
MAX4465-69 toc04
10,000
1000
100
10
1
-40 10-15 35 60 85
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX4465-69 toc05
TEMPERATURE (°C)
SUPPLY CURRENT (pA)
V
SHDN
= V
CC
22
23
25
24
26
27
-40 10-15 35 60 85
SUPPLY CURRENT vs. TEMPERATURE
MAX4465-69 toc06
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1000
100
10
1
0.1
-40 10-15 35 60 85
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
MAX4465-69 toc07
TEMPERATURE (°C)
I
LEAK
(pA)
V
SHDN
= V
CC
V
OUT
= VCC/2
0
-100
0.1 1 100 1000
CHANNEL-TO-CHANNEL ISOLATION
vs. FREQUENCY
-80
-60
-40
-20
MAX4465-69 toc08
FREQUENCY (kHz)
CHANNEL-TO-CHANNEL ISOLATION (dB)
10
-600
-200
-400
200
0
400
600
-40 10-15 35 60 85
MAX4465-69 toc09
TEMPERATURE (°C)
V
OS
(µV)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
0
1
3
2
4
5
-40 10-15 35 60 85
MAX4465-69 toc10
TEMPERATURE (°C)
V
DD
- V
OUT
(mV)
OUTPUT VOLTAGE SWING HIGH
vs. TEMPERATURE
0
1
3
2
4
5
-40 10-15 35 60 85
MAX4465-69 toc11
TEMPERATURE (°C)
V
OUT
- V
SS
(mV)
OUTPUT VOLTAGE SWING LOW
vs. TEMPERATURE
-120
-114
-116
-118
-112
-110
-108
-106
-104
-102
-100
-40 10-15 35 60 85
MAX4465-69 toc12
TEMPERATURE (°C)
CMRR (dB)
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
Typical Operating Characteristics (continued)
(VCC= +5V, VCM= 0V, V
OUT
= VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
Page 5
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
5
80
90
85
100
95
110
105
115
125
120
130
0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.54.0 5.0
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
MAX4465-69 toc13
V
OUT
(V)
GAIN (dB)
-40 10-15 35 60 85
MAX4465-69 toc14
TEMPERATURE (°C)
GAIN (dB)
LARGE-SIGNAL GAIN
vs. TEMPERATURE
130
125
120
115
110
1.0
1.2
1.1
1.4
1.3
1.5
1.6
-40 10-15 35 60 85
MAX4465-69 toc15
TEMPERATURE (°C)
V
MIN
(V)
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
100
10
1
0.1
0.01
0.001
20 2k 20k200
MAX4465/MAX4467/MAX4469
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX4465-69 toc16
FREQUENCY (Hz)
THD + N (%)
V
OUT
= 2Vp-p
A
V
= +1V/V
BW = 22kHz
RL = 100k
Ω
RL = 10k
Ω
100
10
MAX4465-69 toc17
FREQUENCY (Hz)
THD + N (%)
1
0.1
0.01
0.001
20 2k200 20k
V
OUT
= 2Vp-p
AV = +10V/V
BW = 22kHz
RL = 10k
Ω
RL = 100k
Ω
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
100
10
1
0.1
0.01
0 1.0 1.50.5 2.0
THD + N (%)
f = 1kHz
A
V
= +1V/V
BW = 122kHz
0.001
MAX4465/MAX4467/MAX4469
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
MAX4465-69 toc18
VIN (Vp-p)
2.5 3.0
RL = 10k
Ω
RL = 100k
Ω
100
0 0.05 0.10 0.15 0.20 0.25 0.30
10
1
0.1
0.01
0.001
MAX4465-69 toc19
VIN (Vp-p)
THD + N (%)
f = 1kHz
A
V
= +10V/V
BW = 22kHz
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
RL = 10k
Ω
RL = 100kΩ
20µs/div
NONINVERTING SMALL-SIGNAL
TRANSIENT RESPONSE
MAX4465-69 toc20
50mV/div
Typical Operating Characteristics (continued)
(VCC= +5V, VCM= 0V, V
OUT
= VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
200µs/div
NONINVERTING LARGE-SIGNAL
TRANSIENT RESPONSE
MAX4465-69 toc21
2V/div
Page 6
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
6
Pin Description
Typical Operating Characteristics (continued)
(VCC= +5V, VCM= 0V, V
OUT
= VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
021345
MAX4465-69 toc22
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
40
30
20
10
0
220
40
100 1k 100k 1M
70
130
100
190
160
MAX4465-69 toc23
FREQUENCY (Hz)
e
NOISE
(nV√Hz)
10k
e
NOISE
vs. FREQUENCY
A
VCL
= +1V/V
( ) denotes S0T23 package of the MAX4467/MAX4468
SINK CURRENT vs. OUTPUT VOLTAGE
25
20
15
10
SINK CURRENT (mA)
5
0
0 1.0 1.50.5 2.0 2.5 3.0
MAX4465
MAX4466
4 6 (8)
— — 1 OUTA Amplifier Output A
— 1 (4) — MIC_BIAS
3 2 (3) — IN- Inverting Amplifier Input
1 3 (2) — IN+ Noninverting Amplifier Input
2 4 (1) 4 GND Ground
VCC = +5V
OUTPUT VOLTAGE (V)
PIN
MAX4467
MAX4468
VCC = +2.4V
MAX4469
—
MAX4465-69 toc24
SOURCE CURRENT vs. OUTPUT VOLTAGE
25
20
15
10
SOURCE CURRENT (mA)
5
0
0 1.0 1.50.5 2.0 2.5 3.0
VCC = +5V
VCC = +2.4V
OUTPUT VOLTAGE (V)
NAME FUNCTION
OUT Amplifier Output
External Microphone Bias Network Switch
Output
MAX4465-69 toc25
Page 7
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
7
Detailed Description
The MAX4465–MAX4469 are low-power, micropower op
amps designed to be used as microphone preamplifiers. These preamplifiers are an excellent choice for
noisy environments because of their high commonmode rejection and excellent power-supply rejection
ratios. They operate from a single +2.4V to +5.5V supply.
The MAX4465/MAX4467/MAX4469 are unity-gain stable
and deliver a 200kHz gain bandwidth from only 24µA of
supply current. The MAX4466/MAX4468 have a minimum stable gain of +5V/V while providing a 600kHz
gain bandwidth product.
The MAX4467/MAX4468 feature a complete shutdown,
which is active-high, and a shutdown-controlled output
providing bias to the microphone. The MAX4465/
MAX4467/MAX4469 feature a slew rate suited to voice
channel applications. The MAX4466/MAX4468 can be
used for full-range audio, e.g., PC99 inputs.
Rail-to-Rail Output Stage
The MAX4465–MAX4469 can drive a 10kΩ load and still
typically swing within 16mV of the supply rails. Figure 1
shows the output voltage swing of the MAX4465 configured with AV= +10.
Switched Bias Supply
When used as a microphone amplifier for an electret
microphone, some form of DC bias for the microphone
is necessary. The MAX4467/MAX4468 have the ability to
turn off the bias to the microphone when the device is in
shutdown. This can save several hundred microamps of
supply current, which can be significant in low power
applications. The MIC_BIAS pin provides a switched
version of V
CC
to the bias components. Figure 3 shows
some typical values.
Driving Capacitive Loads
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4465/MAX4467/MAX4469 are unity-gain stable
for a range of capacitive loads up to 100pF. Figure 4
shows the response of the MAX4465 with an excessive
capacitive load.
Applications Information
Shutdown Mode
The MAX4467 and MAX4468 feature a low-power, complete shutdown mode. When SHDN goes high, the supply current drops to 5nA, the output enters a high
impedance state and the bias current to the microphone
is switched off. Pull SHDN low to enable the amplifier.
Do not leave SHDN unconnected. Figure 5 shows the
shutdown waveform.
Common-Mode Rejection Ratio
A microphone preamplifier ideally only amplifies the signal present on its input and converts it to a voltage
appearing at the output. When used in noninverting
mode, there is a small output voltage fluctuation when
both inputs experience the same voltage change in the
( ) denotes SOT23 package of the MAX4467/MAX4468.
Pin Description (continued)
PIN
MAX4465
MAX4466
MAX4467
MAX4468
MAX4469
NAME FUNCTION
5 7 (7) 8 V
CC
Positive Supply. Bypass with a 0.1µF capacitor to
— — 2 INA- Inverting Amplifier Input A
— — 3 INA+ Noninverting Amplifier Input A
— — 6 INB- Inverting Amplifier Input B
— — 5 INB+ Noninverting Amplifier Input B
— — 7 OUTB Amplifier Output B
— 8 (6) — SHDN
Active-High Shutdown Input. Connect to GND
for normal operation. Connect to VCC for
shutdown. Do not leave unconnected.
— 5 (5) — N.C. No Connection. Not internally connected.
GND.
Page 8
common mode. The ratio of these voltages is called the
common-mode gain. The common-mode rejection ratio
is the ratio of differential-mode gain to common-mode
gain. The high CMRR properties of the
MAX4465–MAX4469 provide outstanding performances
when configured as a noninverting microphone preamplifier.
Power-Up
The MAX4465–MAX4469 outputs typically settle within
1µs after power-up. Figure 6 shows the output voltage
on power-up.
Power Supplies and Layout
The MAX4465–MAX4469 operate from a single +2.4V to
+5.5V power supply. Bypass the power supply with a
0.1µF capacitor to ground. Good layout techniques are
necessary for the MAX4465–MAX4469 family. To
decrease stray capacitance, minimize trace lengths by
placing external components close to the op amp’s
pins. Surface-mount components are recommended. In
systems where analog and digital grounds are available, the MAX4465–MAX4469 should be connected to
the analog ground.
Test Circuits/Timing Diagrams
Figure 2. MAX4466 Typical Application Circuit
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
8
Figure 1. Rail-to-Rail Output Operation
1V/div
2kΩ
2kΩ
ELECTRET
CAPSULE
+5V
0.1µF
0.01µF
100µs/div
+5V
1MΩ
1MΩ
10kΩ
1µF
IN+
IN-
1
3
MAX4466
VCC = +5V
5
2
GND
100kΩ
100pF
OUT
4
Page 9
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
9
Figure 3. Bias Network Circuit
Test Circuits/Timing Diagrams (continued)
Figure 4. Small-Signal Transient Response with Excessive
Capacitive Load
Figure 5. MAX4467/MAX4468 Shutdown Waveform
MICROPHONE
INPUT
10µF
3.5mm SOCKET
2.2kΩ
0.1µF
100kΩ1kΩ
100kΩ
20kΩ
V
CC
SHDN
MIC_BIAS
IN+
0.01µF
IN-
MAX4468
GND
200kΩ
47pF
OUT
CL = 2000pF
50mV/div
40µs/div
RL = 10kΩ
CL = 10pF
400µs/div
SHDN
2V/div
OUT
Page 10
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
10
Figure 6. Power-Up/Power-Down Waveform
Chip Information
PROCESS: BiCMOS
Ordering Information (continued)
Pin Configurations (continued)
Selector Guide
Test Circuits/Timing
Diagrams (continued)
+
Denotes a lead(Pb)-free/RoHS-compliant package.
V
2V/div
OUT
1V/div
20µs/div
PART
MAX4465 +1 No 200 5 SC70/5 SOT23
MAX4466 +5 No 600 5 SC70/5 SOT23
MAX4467 +1 Yes 200 8 SOT23
MAX4468 +5 Yes 600 8 SOT23
MAX4469 +1 No 200 8 SOT23
MINIMUM STABLE
GAIN
CC
PART TEMP RANGE PIN-PACKAGE
MAX4467EKA+T -40°C to +85°C 8 SOT23
MAX4468EKA+T -40°C to +85°C 8 SOT23
MAX4469EKA+T -40°C to +85°C 8 SOT23
EXTERNAL
MICROPHONE
SHDN
GBWP
(kHz)
PIN-PACKAGE
GND
IN+
IN-
MIC_BIAS
+
1
2
MAX4467
MAX4468
3
4
SOT23
8
OUT
V
7
CC
SHDN
6
N.C.
5
OUTA
INA-
INA+
GND
+
1
2
MAX4469
3
4
SOT23
8
V
CC
OUTB
7
INB-
6
INB+
5
Page 11
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
11
PACKAGE TYPE PACKAGE CODE OUTLINE NO.
LAND
PATTERN NO.
SOT23-5 U5+1
21-0057
90-0174
SC70 X5+1
21-0076
90-0188
SOT23-8 K8+5
21-0078
90-0176
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
Page 12
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in
the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
12
_______________Maxim Integrated Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
© 2012 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
2 6/12 Added lead-free packaging information, removed SO packaging information 1, 2, 10
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
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