General Description
The MAX4465–MAX4469 are micropower op amps opti-
mized for use as microphone preamplifiers. They pro-
vide 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 cur-
rent. 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 AVOL,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
♦+2.4V to +5.5V Supply Voltage Operation
♦Versions with 5nA Complete Shutdown Available
(MAX4467/MAX4468)
♦Excellent Power-Supply Rejection Ratio: 112dB
♦Excellent Common-Mode Rejection Ratio: 126dB
♦High AVOL: 125dB (RL= 100kΩ)
♦Rail-to-Rail Outputs
♦Low 24µA Quiescent Supply Current
♦Gain Bandwidth Product:
200kHz (MAX4465/MAX4467/MAX4469)
600kHz AV≥5 (MAX4466/MAX4468)
♦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
________________________________________________________________ Maxim Integrated Products 1
19-1950; Rev 1; 4/01
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX4465EXK-T -40°C to +85°C 5 SC70-5
MAX4465EUK-T -40°C to +85°C 5 SOT23-5
MAX4466EXK-T -40°C to +85°C 5 SC70-5
MAX4466EUK-T -40°C to +85°C 5 SOT23-5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Ordering Information continued at end of data sheet.
TOP VIEW
GND
OUT
IN-
15VCC
IN+
MAX4465
MAX4466
SC70/SOT23
2
34
Pin Configurations
Typical Operating Circuit
MAX4467
MAX4468
GND
MICROPHONE
CAPSULE
MAX4467/MAX4468 TYPICAL OPERATING CIRCUIT WITH
COMPLETE SHUTDOWN
RBIAS
RFB
VCC
OUT
IN+
IN-
SHDN
CBIAS
RBIAS
RDC
MIC_BIAS
RIN
CIN
CBYPASS RDC
Pin Configurations continued at end of data sheet.
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.
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 (VCC to GND)................................................+6V
All Other Pins to GND.................................-0.3V to (VCC + 0.3V)
Output Short-Circuit Duration
OUT Shorted to GND or VCC.................................Continuous
Continuous Power Dissipation (TA= +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
8-Pin SO (derate 5.88mW/°C above +70°C) ...............471mW
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
ELECTRICAL CHARACTERISTICS
(VCC = +5V, VCM = 0, VOUT = VCC/2, RL= ∞to VCC/2, SHDN = GND (MAX4467/MAX4468 only). TA= TMIN to TMAX, unless otherwise
noted. Typical values specified at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VCC Inferred from PSRR test 2.4 5.5 V
TA = +25°C2448
Supply Current
(Per Amplifier) ICC TA = TMIN to TMAX 60 µA
Supply Current in Shutdown I SHDN SHDN = VCC (Note 2) 5 50 nA
Input Offset Voltage VOS ±1±5mV
Input Bias Current IBVCM = -0.1V ±2.5 ±100 nA
Input Offset Current Range IOS VCM = -0.1V ±1±15 nA
Input Common-Mode Range VCM Inferred from CMRR test -0.1 VCC - 0.1 V
C om m on- M od e Rej ecti on Rati o CMRR -0.1V ≤ VCM ≤ VCC - 1V 80 126 dB
2.4V ≤ VCC ≤ 5.5V 80 112
MAX4465/MAX4467/MAX4469, f = 3.4kHz 75Power-Supply Rejection Ratio PSRR
MAX4466/MAX4468, f = 3.4kHz 80
dB
RL = 100kΩ to VCC/2,
0.05V ≤ VOUT ≤ VCC - 0.05V 125
Open-Loop Gain AVOL RL = 10kΩ to VCC/2,
0.1V ≤ VOUT ≤ VCC - 0.1V 80 95
dB
RL = 100kΩ10
Output Voltage Swing High VOH IVCC - VOHIRL = 10kΩ16 50 mV
RL = 100kΩ10
Output Voltage Swing Low VOL RL = 10kΩ14 50 mV
Output Short-Circuit Current To either supply rail 15 mA
Output Leakage Current
in Shutdown
SHDN = VCC, 0 ≤ VOUT ≤ VCC ;
(Notes 2, 3) ±0.5 ±100 nA
SHDN Logic Low VIL (Note 2) VCC ✕ 0.3 V
SHDN Logic High VIH (Note 2) VCC ✕ 0.7 V
SHDN Input Current (Note 2) 2 25 nA
MAX4465/MAX4467/MAX4469 200
Gain Bandwidth Product GBWP MAX4466/MAX4468 600 kHz
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 (CL = 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 = 0, VOUT = VCC/2, RL= ∞to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= TMIN to TMAX, unless otherwise
noted. Typical values specified at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Channel-to-Channel Isolation MAX4469 only, f = 1kHz 85 dB
Phase Margin ØMRL = 100kΩ70 d egr ees
Gain Margin RL = 100kΩ20 dB
MAX4465/MAX4467/
MAX4469,
AV = +1
45
Slew Rate SR Output step = 4V
MAX4466/MAX4468,
AV = +5 300
mV/µs
Input Noise Voltage Density enf = 1kHz 80 nV/√Hz
M AX 4465/M AX 4467/
M AX 4469 0.02
Total Harmonic Distortion THD f = 1kHz, RL = 10kΩ,
VOUT = 2Vp-p MAX4466/MAX4468 0.03
%
MAX4465/MAX4467/MAX4469, AV = +1 100
Capacitive Load Stability CLOAD MAX4466/MAX4468, AV = +5 100
pF
SHDN Delay Time t SHDN (Note 2) 1 µs
Enable Delay Time tEN (Note 2) 50 µs
Power-On Time tON (Note 2) 40 µs
Bias Switch On-Resistance RSIS = 5mA (Note 2) 20 500 Ω
Typical Operating Characteristics
(VCC = +5V, VCM = 0, VOUT = VCC/2, RL= 100kΩto VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
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)
VSHDN = VCC
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 356085
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
MAX4465-69 toc07
TEMPERATURE (°C)
ILEAK (pA)
VSHDN = VCC
VOUT = 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)
VOS (µV)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
0
1
3
2
4
5
-40 10-15 35 60 85
MAX4465-69 toc10
TEMPERATURE (°C)
VDD - VOUT (mV)
OUTPUT VOLTAGE SWING HIGH
vs. TEMPERATURE
0
1
3
2
4
5
-40 10-15 35 60 85
MAX4465-69 toc11
TEMPERATURE (°C)
VOUT - VSS (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 = 0, VOUT = VCC/2, RL= 100kΩto VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
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
VOUT (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)
VMIN (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 (%)
VOUT = 2Vp-p
AV = +1V/V
BW = 22kHz
RL = 100kΩ
RL = 10kΩ
100
10
MAX4465-69 toc17
FREQUENCY (Hz)
THD + N (%)
1
0.1
0.01
0.001
20 2k200 20k
VOUT = 2Vp-p
AV = +10V/V
BW = 22kHz
RL = 10kΩ
RL = 100kΩ
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
AV = +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 = 10kΩ
RL = 100kΩ
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
AV = +10V/V
BW = 22kHz
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
RL = 10kΩ
RL = 100kΩ
20µs/div
NONINVERTING SMALL-SIGNAL
TRANSIENT RESPONSE
MAX4465-69 toc20
50mV/div
Typical Operating Characteristics (continued)
(VCC = +5V, VCM = 0, VOUT = VCC/2, RL= 100kΩto 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
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
6 _______________________________________________________________________________________
Pin Description
Typical Operating Characteristics (continued)
(VCC = +5V, VCM = 0, VOUT = VCC/2, RL= 100kΩto 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)
eNOISE (nV√Hz)
10k
eNOISE vs. FREQUENCY
AVCL = +1V/V
PIN
MAX4465
MAX4466
MAX4467
MAX4468 MAX4469
NAME FUNCTION
4 6 (8) —OUT Amplifier Output
——1 OUTA Amplifier Output A
—1 (4) —MIC_BIAS External Microphone Bias Network Switch
Output
3 2 (3) —IN- Inverting Amplifier Input
1 3 (2) —IN+ Noninverting Amplifier Input
2 4 (1) 4 GND Ground
0
5
15
10
20
25
SINK CURRENT vs. OUTPUT VOLTAGE
MAX4465-69 toc24
OUTPUT VOLTAGE (V)
SINK CURRENT (mA)
0 1.0 1.50.5 2.0 2.5 3.0
VCC = +5V
VCC = +2.4V
0
5
15
10
20
25
SOURCE CURRENT vs. OUTPUT VOLTAGE
MAX4465-69 toc25
OUTPUT VOLTAGE (V)
SOURCE CURRENT (mA)
0 1.0 1.50.5 2.0 2.5 3.0
VCC = +5V
VCC = +2.4V
( ) denotes S0T23 package of the MAX4467/MAX4468
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 preampli-
fiers. These preamplifiers are an excellent choice for
noisy environments because of their high common-
mode rejection and excellent power-supply rejection
ratios. They operate from a single +2.4V to +5.5V sup-
ply.
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 mini-
mum 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 10kΩload and still
typically swing within 16mV of the supply rails. Figure 1
shows the output voltage swing of the MAX4465 config-
ured 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 VCC 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, com-
plete shutdown mode. When SHDN goes high, the sup-
ply 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 floating. Figure 5 shows the shut-
down waveform.
Common-Mode Rejection Ratio
A microphone preamplifier ideally only amplifies the sig-
nal 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 VCC Positive Supply. Bypass with a 0.1µF capacitor to
GND.
——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 floating.
—5 (5) —N.C. No Connection. Not internally connected.
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 pream-
plifier.
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 avail-
able, the MAX4465–MAX4469 should be connected to
the analog ground.
Test Circuits/Timing Diagrams
Figure 2. MAX4466 Typical Application Circuit
ELECTRET
CAPSULE
VCC = +5V
MAX4466
2kΩ
10kΩ
GND
100kΩ
100pF
1MΩ
+5V
+5V
1MΩ
2kΩ
0.1µF
0.01µF
1µF
1
5
2
4
3
IN+
IN-
OUT
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
8 _______________________________________________________________________________________
1V/div
100µs/div
Figure 1. Rail-to-Rail Output Operation
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
_______________________________________________________________________________________ 9
Figure 3. Bias Network Circuit
MICROPHONE
INPUT
3.5mm SOCKET
MAX4468
MIC_BIAS
GND
200kΩ
47pF
100kΩ
100kΩ1kΩ
2.2kΩ
20kΩ
0.1µF
0.01µF
10µF
VCC
IN+
IN-
OUT
SHDN
Test Circuits/Timing Diagrams (continued)
40µs/div
50mV/div
C
L
= 2000pF
Figure 4. Small-Signal Transient Response with Excessive
Capacitive Load
400µs/div
SHDN
2V/div
OUT
RL = 10kΩ
CL = 10pF
Figure 5. MAX4467/MAX4468 Shutdown Waveform
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
10 ______________________________________________________________________________________
20µs/div
OUT
1V/div
VCC
2V/div
Figure 6. Power-Up/Power-Down Waveform
Chip Information
MAX4465/MAX4466 TRANSISTOR COUNT: 62
MAX4467/MAX4468 TRANSISTOR COUNT: 72
MAX4469 TRANSISTOR COUNT: 113
PROCESS: BiCMOS
Ordering Information (continued)
PART TEMP. RANGE PIN-PACKAGE
MAX4467EKA-T -40°C to +85°C 8 SOT23-8
MAX4467ESA -40°C to +85°C 8 SO
MAX4468EKA-T -40°C to +85°C 8 SOT23-8
MAX4468ESA -40°C to +85°C 8 SO
MAX4469EKA-T -40°C to +85°C 8 SOT23-8
MAX4469ESA -40°C to +85°C 8 SO
INB-
INA+
INB+
GND
1
2
8
7
VCC
OUTB
INA-
OUTA
MAX4469
SOT23/SO
3
4
6
5
OUT
IN+
N.C.
GND
1
2
8
7
SHDN
VCC
IN-
MIC_BIAS
MAX4467
MAX4468
SO
3
4
6
5
OUT
IN+
N.C.
GND 1
2
8
7
SHDN
VCC
IN-
MIC_BIAS
MAX4467
MAX4468
SOT23
3
4
6
5
Pin Configurations (continued)
Selector Guide
PART MINIMUM STABLE
GAIN
EXTERNAL
MICROPHONE
SHDN
GBWP
(kHz) PIN-PACKAGE
MAX4465 +1 No 200 5 SC70/5 SOT23
MAX4466 +5 No 600 5 SC70/5 SOT23
MAX4467 +1 Yes 200 8 SOT23/8 SO
MAX4468 +5 Yes 600 8 SOT23/8 SO
MAX4469 +1 No 200 8 SOT23/8 SO
Test Circuits/Timing
Diagrams (continued)
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
______________________________________________________________________________________ 11
SC70, 5L.EPS
Package Information
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
12 ______________________________________________________________________________________
Package Information (continued)
SOT5L.EPS
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
______________________________________________________________________________________ 13
Package Information (continued)
SOT23, 8L.EPS
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.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
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.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
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.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information (continued)
SOICN.EPS
