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
♦ +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 A
VOL
: 125dB (RL= 100kΩ)
♦ Rail-to-Rail Outputs
♦ Low 24µA Quiescent Supply Current
♦ Gain Bandwidth Product:
200kHz (MAX4465/MAX4467/MAX4469)
600kHz A
V
≥ 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
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Ordering Information continued at end of data sheet.
TOP VIEW
GND
OUT
IN-
1
5
V
CC
IN+
MAX4465
MAX4466
SC70/SOT23
2
3
4
Pin Configurations
Typical Operating Circuit
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.
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
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
MICROPHONE
CAPSULE
MAX4467/MAX4468 TYPICAL OPERATING CIRCUIT WITH
COMPLETE SHUTDOWN
R
FB
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
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, V
OUT
= VCC/2, RL= ∞ to VCC/2, SHDN = GND (MAX4467/MAX4468 only). TA= T
MIN
to T
MAX
, unless otherwise
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
Inferred from PSRR test 2.4 5.5 V
CC
I
SHDN
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
MIN
MAX
≤ 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
0.1V ≤ V
VCC - V
I
OH
OL
SHDN = VCC, 0 ≤ V
= 10kΩ to V
L
≤ VCC - 0.05V
OUT
CC
≤ VCC - 0.1V
OUT
I
OH
/2,
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
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
_______________________________________________________________________________________ 3
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, V
OUT
= VCC/2, RL= ∞ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= T
MIN
to T
MAX
, unless otherwise
noted. Typical values specified at T
A
= +25°C.) (Note 1)
Typical Operating Characteristics
(VCC= +5V, VCM= 0, 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
R
M
= 100kΩ 70
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
MAX4465/MAX4467/MAX4469
GAIN AND PHASE vs. FREQUENCY (NO LOAD)
140
120
100
80
60
40
20
0
-20
-40
-60
GAIN (dB)/PHASE (DEGREES)
-80
-100
-120
-140
10.1 1k 10k 100k10 100 1M
FREQUENCY (Hz)
MAX4466/MAX4468 GAIN AND PHASE
140
120
100
MAX4465-69 toc01
80
60
40
20
0
-20
-40
-60
-80
GAIN (dB)/PHASE (DEGREES)
-100
-120
-140
-160
1 1k 10k 100k10 100 1M
vs. FREQUENCY (NO LOAD)
MAX4465-69 toc02
GAIN (dB)/PHASE (DEGREES)
FREQUENCY (Hz)
MAX4465/MAX4467/MAX4469
GAIN AND PHASE vs. FREQUENCY (C
140
120
100
80
60
40
20
0
-20
-40
-60
-80
-100
-120
-140
10.1 1k 10k 100k10 100 1M
FREQUENCY (Hz)
= 100pF)
L
MAX4465-69 toc03
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VCC= +5V, VCM= 0, V
OUT
= VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA= +25°C, unless otherwise
noted.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-10
-30
-50
-70
PSRR (dB)
-90
-110
SHUTDOWN SUPPLY CURRENT
10,000
MAX4465-69 toc04
1000
100
SUPPLY CURRENT (pA)
10
V
= V
SHDN
vs. TEMPERATURE
CC
MAX4465-69 toc05
SUPPLY CURRENT vs. TEMPERATURE
27
26
25
24
SUPPLY CURRENT (µA)
23
MAX4465-69 toc06
-130
10 1k 10k 100k100 1M
FREQUENCY (Hz)
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
1000
V
= V
SHDN
CC
V
= VCC/2
OUT
100
(pA)
10
LEAK
I
1
0.1
-40 10-15 356085
TEMPERATURE (°C)
0
-20
MAX4465-69 toc07
-40
-60
-80
CHANNEL-TO-CHANNEL ISOLATION (dB)
-100
OUTPUT VOLTAGE SWING HIGH
vs. TEMPERATURE
5
4
3
(mV)
OUT
- V
DD
2
V
1
0
-40 10-15 35 60 85
TEMPERATURE (°C)
MAX4465-69 toc10
(mV)
SS
- V
OUT
V
1
-40 10-15 35 60 85
TEMPERATURE (°C)
CHANNEL-TO-CHANNEL ISOLATION
vs. FREQUENCY
0.1 1 100 1000
10
FREQUENCY (kHz)
OUTPUT VOLTAGE SWING LOW
vs. TEMPERATURE
5
4
3
2
1
0
-40 10-15 35 60 85
TEMPERATURE (°C)
MAX4465-69 toc08
MAX4465-69 toc11
CMRR (dB)
22
-40 10-15 35 60 85
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
600
400
200
(µV)
0
OS
V
-200
-400
-600
-40 10-15 35 60 85
TEMPERATURE (°C)
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
-40 10-15 35 60 85
TEMPERATURE (°C)
MAX4465-69 toc09
MAX4465-69 toc12
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(VCC= +5V, VCM= 0, 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
130
125
120
115
110
105
GAIN (dB)
100
95
90
85
80
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/MAX4467/MAX4469
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
100
V
= 2Vp-p
OUT
= +1V/V
A
V
BW = 22kHz
10
LARGE-SIGNAL GAIN
vs. TEMPERATURE
130
MAX4465-69 toc13
125
120
GAIN (dB)
115
110
-40 10-15 35 60 85
V
OUT
(V)
TEMPERATURE (°C)
MAX4465-69 toc14
(V)
V
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
100
V
= 2Vp-p
OUT
AV = +10V/V
BW = 22kHz
10
MAX4465-69 toc16
MAX4465-69 toc17
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
1.6
1.5
1.4
1.3
MIN
1.2
1.1
1.0
-40 10-15 35 60 85
TEMPERATURE (°C)
MAX4465/MAX4467/MAX4469
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
100
f = 1kHz
= +1V/V
A
V
BW = 122kHz
10
MAX4465-69 toc15
MAX4465-69 toc18
1
THD + N (%)
0.1
0.01
0.001
20 2k 20k200
RL = 100k
RL = 10k
Ω
FREQUENCY (Hz)
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
100
f = 1kHz
= +10V/V
A
V
BW = 22kHz
10
1
THD + N (%)
0.1
0.01
0.001
0 0.05 0.10 0.15 0.20 0.25 0.30
Ω
RL = 10k
RL = 100kΩ
VIN (Vp-p)
1
THD + N (%)
0.1
0.01
0.001
20 2k200 20k
RL = 100k
Ω
FREQUENCY (Hz)
Ω
1
RL = 100k
RL = 10k
Ω
THD + N (%)
0.1
0.01
0.001
0 1.0 1.50.5 2.0
Ω
2.5 3.0
VIN (Vp-p)
RL = 10k
NONINVERTING SMALL-SIGNAL
TRANSIENT RESPONSE
MAX4465-69 toc19
Ω
50mV/div
20µs/div
MAX4465-69 toc20
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
6 _______________________________________________________________________________________
Pin Description
Typical Operating Characteristics (continued)
(VCC= +5V, VCM= 0, 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
VCC = +5V
15
10
SINK CURRENT (mA)
5
0
0 1.0 1.50.5 2.0 2.5 3.0
OUTPUT VOLTAGE (V)
PIN
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
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
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 floating. 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
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 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
100µs/div
+5V
+5V
2k
Ω
2k
Ω
ELECTRET
CAPSULE
0.1µF
0.01µF
10k
1M
1M
1µF
Ω
1
IN+
Ω
3
IN-
Ω
VCC = +5V
5
MAX4466
4
2
GND
100kΩ
100pF
OUT
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
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
10 ______________________________________________________________________________________
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)
Pin Configurations (continued)
Selector Guide
Test Circuits/Timing
Diagrams (continued)
20µs/div
PART
MAX4465 +1 No 200 5 SC70/5 SOT23
MAX4466 +5 No 600 5 SC70/5 SOT23
MAX4467 +1 Yes 200 8 SOT23/8 SO
MAX4468 +5 Yes 600 8 SOT23/8 SO
MAX4469 +1 No 200 8 SOT23/8 SO
MINIMUM STABLE
GAIN
V
CC
2V/div
OUT
1V/div
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
EXTERNAL
MICROPHONE
SHDN
PART TEMP. RANGE PIN-PACKAGE
GBWP
(kHz)
PIN-PACKAGE
GND
1
2
IN+
IN-
MIC_BIAS
MAX4467
MAX4468
3
4
SOT23
8
OUT
V
7
CC
SHDN
6
N.C.
5
MIC_BIAS
IN+
GND
1
2
IN-
MAX4467
MAX4468
3
4
SO
8
SHDN
V
7
CC
OUT
6
N.C.
5
OUTA
INA-
INA+
GND
1
2
3
4
MAX4469
SOT23/SO
8
V
CC
OUTB
7
INB-
6
INB+
5
MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
______________________________________________________________________________________ 11
Package Information
SC70, 5L.EPS
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
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