General Description
The MAX4060 evaluation kit (EV kit) is a fully assembled
and tested circuit board used to evaluate the MAX4060
low-noise microphone amplifier. The MAX4060 contains a
differential input amplifier typically used for an internal
microphone and a single-ended auxiliary-input amplifier
used for an external microphone. Both amplifiers have an
internally set fixed gain of 10V/V. The MAX4060 EV kit
also provides a bias voltage for powering microphones,
compliant with the PC99/2001 specification.
The MAX4060 EV kit has low quiescent current and
high power-supply rejection. The MAX4060 is available
in 8-pin QFN and MAX packages. The MAX4060 EV kit
uses the smaller 8-pin QFN package.
Features
o 4.5V to 5.5V Single-Supply Operation
o Low 0.75mA Supply Current
o High 86dB PSRR at 1kHz
o Single-Ended and Differential Inputs
o PC99/2001 Compliant
o Low-Noise Microphone Bias Voltage
o Small 8-Pin QFN Package (3mm x 3mm)
o Fully Assembled and Tested
Quick Start
The MAX4060 EV kit is fully assembled and tested.
Follow the steps listed below to verify board operation.
Do not turn on the power supply until all connec-
tions are completed.
Recommended Equipment
5V, 100mA power supply
Function generator
Oscilloscope
Equipment Setup
1) Set the power supply to 5V.
2) Set the function generator's output for a sine wave
with 0.2V
P-P
, 100Hz frequency, and 0 Offset.
3) Turn off the power supply and function generator.
Evaluates: MAX4060
MAX4060 Evaluation Kit
________________________________________________________________ Maxim Integrated Products
1
19-2513; Rev 0; 7/02
Component List
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.
Ordering Information
Component Suppliers
PART
TEMP RANGE
IC PACKAGE
MAX4060EVKIT
0C to +70C
8 QFN
DESIGNATION
QTY
DESCRIPTION
C1
1
0.1F 10%, 16V X7R ceramic
capacitor (0603)
TDK C1608X7R1C104K
C2
1
10F 20%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J106MT
C3, C4, C5
3
1F 10%, 10V X5R ceramic
capacitors (0603)
TDK C1608X5R1A105KT
C6
1
1F 10%, 6.3V tantalum
capacitor (0603)
AVX TACL105K006R
AUX_IN
1
3.5mm stereo jack
OUT
1
Non-switched, PC-mount jack, red
R1
1
100k
5% resistor (0603)
JU1
1
3-pin header
None
1
Shunt (JU1)
None
1
MAX4060 PC board
None
1
MAX4060MAX4063 data sheet
None
1
MAX4060 EV kit data sheet
U1
1
MAX4060EGA (8-pin QFN)
SUPPLIER
PHONE
FAX
WEBSITE
AVX
843-946-0238
843-626-3123
www.avxcorp.com
TDK
847-803-6100
847-390-4405
www.component.tdk.com
Note: Please indicate that you are using the MAX4060 when contacting these component suppliers.
Evaluates: MAX4060
Quick Test
1) Install a shunt across pins 1 and 2 of jumper JU1
(INT/AUX).
2) Connect the output of the function generator to the
AUX_IN pad on the MAX4060 EV kit and the ground
lead of the function generator to the GND pad.
3) Connect the 5V terminal of the power supply to the
VCC pad and the ground terminal of the power
supply to the GND pad.
4) Turn on the power supply and then the function
generator.
5) Using the oscilloscope, verify that the signal at the
OUT pad is 2V
P-P
.
6) Move the shunt on JU1 to pins 2 and 3.
7) Move the output of the function generator to the IN+
pad on the MAX4060 EV kit and the ground lead of
the function generator to the IN- pad.
8) Using the oscilloscope, verify that the signal at the
OUT pad is 2V
P-P
.
Detailed Description
The MAX4060 EV kit evaluates the MAX4060 which
contains two low-noise amplifiers: a differential amplifier
typically used for amplifying an internal microphone
and an auxiliary single-ended amplifier typically used
for amplifying an external microphone.
The MAX4060 EV kit operates from a 4.5V to 5.5V supply
and provides a DC biasing voltage with an internal, 2.5k
resistor to power a microphone. This DC biasing voltage
is PC99/2001 compliant. The two amplifiers within the
MAX4060 have an internally set fixed gain of 10V/V.
Jumper Selection Input Mode
Jumper JU1 provides an option to select between sin-
gle-ended mode (AUX) and differential mode (INT)
inputs. The input mode (INT/AUX) can also be con-
trolled by an external controller connected to the
(INT/AUX) pad after removing the shunt on jumper JU1
(see Table 1 for shunt positions).
MAX4060 Evaluation Kit
2
_______________________________________________________________________________________
GND
AUX_IN
BIAS
IN+
IN-
AUX_IN
3
1
2
C5
1
F
C4
1
F
C3
1
F
IN-
6
IN+
5
BIAS
3
AUX_IN
8
1
2
OUT
7
GND
4
V
CC
INT/AUX
INT/AUX*
U1
MAX4060
GND
OUT
OUT
GND
VCC
1
2
C1
0.1
F
C2
10
F
C6
1
F
R1
100k
VCC
JU1
1
2
3
*THE INT/AUX PAD ON THE SCHEMATIC IS THE
SAME AS THE AUX/INT PAD ON THE EV KIT.
Figure 1. MAX4060 EV Kit Schematic
Table 1. JU1 Jumper Selection
SHUNT POSITION
INT/AUX PIN
EV KIT INPUT
1-2 (AUX)
Pulled up to V
CC
Single ended
2-3 (INT)
Pulled down to
GND
Differential
None. External
controller connected
to INT/AUX pad
Driven by
external source
Driven by
external source
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 3
2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
Evaluates: MAX4060
MAX4060 Evaluation Kit
Figure 2. MAX4060 EV Kit Component Placement Guide--
Component Side
Figure 3. MAX4060 EV Kit PC Board Layout--Component Side
Figure 4. MAX4060 EV Kit PC Board Layout--Solder Side
Note: The AUX/INT pad on the MAX4060 EV kit connects to the INT/AUX pin on the device.
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