MAX4466 MAXIM [Maxim Integrated Products], MAX4466 Datasheet

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MAX4466

Manufacturer Part Number
MAX4466
Description
Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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Manufacturer
Quantity
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Part Number:
MAX4466EXK
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4466EXK+T
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Quantity:
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0
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
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.
19-1950; Rev 1; 4/01
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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.
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Pin Configurations continued at end of data sheet.
TOP VIEW
Microphone Preamplifiers
Hearing Aids
Cellular Phones
Voice-Recognition Systems
Digital Dictation Devices
Headsets
Portable Computing
GND
________________________________________________________________ Maxim Integrated Products
IN+
®
IN-
outputs, high A
1
2
3
General Description
SC70/SOT23
Pin Configurations
MAX4465
MAX4466
Preamplifiers with Complete Shutdown
Applications
5
4
VOL
V
OUT
CC
, plus excellent
Ordering Information continued at end of data sheet.
o +2.4V to +5.5V Supply Voltage Operation
o Versions with 5nA Complete Shutdown Available
o Excellent Power-Supply Rejection Ratio: 112dB
o Excellent Common-Mode Rejection Ratio: 126dB
o High A
o Rail-to-Rail Outputs
o Low 24µA Quiescent Supply Current
o Gain Bandwidth Product:
o Available in Space-Saving Packages
MAX4465EXK-T
MAX4465EUK-T
MAX4466EXK-T
MAX4466EUK-T
MAX4467/MAX4468 TYPICAL OPERATING CIRCUIT WITH
COMPLETE SHUTDOWN
(MAX4467/MAX4468)
C
200kHz (MAX4465/MAX4467/MAX4469)
600kHz A
5-Pin SC70 (MAX4465/MAX4466)
8-Pin SOT23 (MAX4467/MAX4468/MAX4469)
BYPASS
R
MICROPHONE
CAPSULE
C
BIAS
IN
PART
C
R
VOL
BIAS
IN
R
BIAS
: 125dB (R
V
Typical Operating Circuit
≥ 5 (MAX4466/MAX4468)
R
R
DC
DC
Ordering Information
MIC_BIAS
IN+
IN-
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
L
= 100kΩ)
R
FB
V
CC
GND
MAX4467
MAX4468
PIN-PACKAGE
5 SC70-5
5 SOT23-5
5 SC70-5
5 SOT23-5
Features
SHDN
OUT
1

Related parts for MAX4466

MAX4466 Summary of contents

Page 1

... 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 A ® ...

Page 2

... A MIN MAX SHDN = V (Note -0. -0.1V CM Inferred from CMRR test -0.1V ≤ V ≤ 2.4V ≤ V ≤ 5.5V CC MAX4465/MAX4467/MAX4469 3.4kHz MAX4466/MAX4468 3.4kHz R = 100kΩ / 0.05V ≤ V ≤ 0.05V OUT 10kΩ / 0.1V ≤ V ≤ 0.1V OUT 100kΩ ...

Page 3

... V (Note 2) (Note 2) (Note 5mA (Note +25°C. All temperature limits are guaranteed by design. A Typical Operating Characteristics = 100kΩ /2, SHDN = GND (MAX4467/MAX4468 only MAX4466/MAX4468 GAIN AND PHASE vs. FREQUENCY (NO LOAD) 140 120 100 -20 -40 -60 -80 -100 -120 ...

Page 4

Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown (V = +5V / OUT CC noted.) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY -10 -30 -50 -70 -90 -110 -130 10 100 1k 10k ...

Page 5

... Typical Operating Characteristics (continued) = 100kΩ /2, SHDN = GND (MAX4467/MAX4468 only LARGE-SIGNAL GAIN vs. TEMPERATURE 130 125 120 115 110 5.0 -40 - TEMPERATURE (°C) MAX4466/MAX4468 TOTAL HARMONIC DISTORTION vs. FREQUENCY 100 V OUT = 2Vp +10V 22kHz 10kΩ 0.1 0. 100kΩ L 0.001 ...

Page 6

... SINK CURRENT vs. OUTPUT VOLTAGE + 0.5 1.0 OUTPUT VOLTAGE (V) PIN MAX4465 MAX4467 MAX4466 MAX4468 4 6 (8) — — — denotes S0T23 package of the MAX4467/MAX4468 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued) = 100kΩ /2, SHDN = GND (MAX4467/MAX4468 only), T ...

Page 7

... 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 ...

Page 8

... The MAX4465–MAX4469 outputs typically settle within 1µs after power-up. Figure 6 shows the output voltage on power-up. Figure 1. Rail-to-Rail Output Operation ELECTRET CAPSULE Figure 2. MAX4466 Typical Application Circuit 8 _______________________________________________________________________________________ The MAX4465–MAX4469 operate from a single +2.4V to +5.5V power supply. Bypass the power supply with a of the 0.1µ ...

Page 9

Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown 1kΩ 10µF 2.2kΩ MICROPHONE INPUT 3.5mm SOCKET Figure 3. Bias Network Circuit C = 2000pF L 40µs/div Figure 4. Small-Signal Transient Response with Excessive Capacitive Load _______________________________________________________________________________________ Test Circuits/Timing Diagrams (continued) MIC_BIAS ...

Page 10

... MAX4466 +5 MAX4467 +1 MAX4468 +5 MAX4469 +1 GND 1 IN+ 2 MAX4467 MAX4468 IN- 3 MIC_BIAS 4 SOT23 10 ______________________________________________________________________________________ MAX4465/MAX4466 TRANSISTOR COUNT: 62 MAX4467/MAX4468 TRANSISTOR COUNT: 72 MAX4469 TRANSISTOR COUNT: 113 PROCESS: BiCMOS V CC 2V/div Ordering Information (continued) PART MAX4467EKA-T OUT 1V/div MAX4467ESA MAX4468EKA-T MAX4468ESA MAX4469EKA-T MAX4469ESA EXTERNAL MICROPHONE SHDN No ...

Page 11

Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown ______________________________________________________________________________________ Package Information 11 ...

Page 12

Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown 12 ______________________________________________________________________________________ Package Information (continued) ...

Page 13

Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown ______________________________________________________________________________________ Package Information (continued) 13 ...

Page 14

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 Maxim cannot assume responsibility for use of any circuitry ...

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