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PDF MAX4466 Data sheet ( Hoja de datos )
| Número de pieza | MAX4466 | |
| Descripción | Microphone Preamplifiers | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1950; Rev 2; 6/12
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
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
Pin Configurations
TOP VIEW
+
IN+ 1
5 VCC
MAX4465
GND 2 MAX4466
IN- 3
4 OUT
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 AVOL: 125dB (RL = 100kΩ)
o Rail-to-Rail Outputs
o Low 24µA Quiescent Supply Current
o Gain Bandwidth Product:
200kHz (MAX4465/MAX4467/MAX4469)
600kHz AV ≥ 5 (MAX4466/MAX4468)
o Available in Space-Saving Packages
5-Pin SC70 (MAX4465/MAX4466)
8-Pin SOT23 (MAX4467/MAX4468/MAX4469)
Ordering Information
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
+Denotes a lead(Pb)-free/RoHS-compliant package.
Ordering Information continued at end of data sheet.
Typical Operating Circuit
RBIAS
CBIAS
RBIAS
CIN RIN
CBYPASS
MIC_BIAS
RDC
IN+
IN-
RDC
VCC
SHDN
OUT
MAX4467
MAX4468
GND
SC70/SOT23
Pin Configurations continued at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MICROPHONE
CAPSULE
MAX4467/MAX4468 TYPICAL OPERATING CIRCUIT WITH
COMPLETE SHUTDOWN
RFB
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.
1
1 page  
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
Typical Operating Characteristics (continued)
(VCC = +5V, VCM = 0V, VOUT = VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA = +25°C, unless otherwise
noted.)
LARGE-SIGNAL GAIN
LARGE-SIGNAL GAIN
MINIMUM OPERATING VOLTAGE
vs. OUTPUT VOLTAGE
vs. TEMPERATURE
vs. TEMPERATURE
130 130 1.6
125
120 1.5
125
115
1.4
110
105 120 1.3
100
95 1.2
115
90 1.1
85
80
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT (V)
MAX4465/MAX4467/MAX4469
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
100
VOUT = 2Vp-p
AV = +1V/V
10 BW = 22kHz
110
-40 -15
10
35
60
TEMPERATURE (°C)
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
100
VOUT = 2Vp-p
AV = +10V/V
BW = 22kHz
10
85
1.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
MAX4465/MAX4467/MAX4469
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
100
f = 1kHz
AV = +1V/V
10 BW = 122kHz
1
RL = 10kΩ
0.1
RL = 100kΩ
0.01
0.001
20
200 2k
FREQUENCY (Hz)
20k
MAX4466/MAX4468
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT AMPLITUDE
100 f = 1kHz
AV = +10V/V
10 BW = 22kHz
1 RL = 10kΩ
0.1
0.01 RL = 100kΩ
0.001
20
200 2k
FREQUENCY (Hz)
20k
NONINVERTING SMALL-SIGNAL
TRANSIENT RESPONSE
MAX4465-69 toc20
1
0.1 RL = 10kΩ
0.01
RL = 100kΩ
0.001
0 0.5 1.0 1.5 2.0 2.5 3.0
VIN (Vp-p)
NONINVERTING LARGE-SIGNAL
TRANSIENT RESPONSE
MAX4465-69 toc21
1
RL = 10kΩ
0.1
50mV/div
2V/div
0.01 RL = 100kΩ
0.001
0
0.05 0.10 0.15 0.20 0.25 0.30
VIN (Vp-p)
20µs/div
200µs/div
5
5 Page 
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
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 per-
tains to the package regardless of RoHS status.
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
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX4466.PDF ] | |
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