MAX40089 [MAXIM]
2.7V to 5.5V Supply Voltage Range Across VDD and VSS;
| 型号： | MAX40089 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 2.7V to 5.5V Supply Voltage Range Across VDD and VSS |
| 文件： | 总10页 (文件大小：1523K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
General Description
Quick Start
The MAX40089 evaluation kit (EV kit) is a fully assembled
and tested circuit board that contains all the components
necessary to evaluate both MAX40077 and MAX40089
dual channel op amps.
Required Equipment
Before beginning, the following equipment is needed:
● MAX40089 EV kit
● 2.7V to 5.5V, 100mA DC power supply
● Precision voltage calibrator
● 2 digital multimeters
The MAX40089 EV kit printed circuit board (PCB) comes
installed with MAX40089AUT+ in an 8-µMAX package.
The device is a dual-channel, rail-to-rail output op amp
offering 10MHz Gain Bandwidth product (MAX40077) and
42MHz Gain Bandwidth product (MAX40089). The EV kit
operates from a single 2.7V to 5.5V DC power supply or
from ±1.35V to ±2.75V split supply.
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation. Caution: Do not turn on
power supplies until all connections are completed
Features
and turn on V , V supplies before turning on voltage
sources on the input pins.
DD SS
● +2.7V to +5.5V Supply Voltage Range Across V
DD
and V
1) Make sure JU1 and JU4 jumpers are installed in 1-2
and 1-4 position, respectively, before applying supply
voltage.
SS
● 42MHz Gain Bandwidth Product (MAX40089)
● 10MHz Gain Bandwidth Product (MAX40077)
● Ultra-Low Distortion (0.0002% with 1kΩ load)
● Proven PCB Layout
2) Have JU5 installed for single-supply operation.
3) Connect positive terminal of the +5V supply to the
VDD test point and the GND terminal of supply to the
VSS test point.
● Fully Assembled and Tested
4) Connect the positive terminal of the precision voltage
source to the INA+ and INB+ test point and negative
terminal to GND test point.
Ordering Information appears at end of data sheet.
5) Connect 2 Digital Multimeters(DMM) to monitor the
voltage on the OUTA and OUTB test points.
6) Turn on the 5V power supply connected to VDD test
point and turn on the precision voltage source on
INA+, INB+ test points and set 0.1V. Observe the
output at the OUTA and OUTB test points on the
Multimeters. DMMs should approximately read 1V.
7) Also, now vary precision voltage source on inputs
INA+, INB+ between 0V to 0.45V and see if DMMs on
OUTA and OUTB test points is gained up by a factor
of 10V/V to the voltage applied on input.
Once above steps are confirmed, EV kit is tested for
functionality.
319-100180; Rev 1; 5/18
Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
MAX40089 EV Kit Board Photo
Maxim Integrated
│ 2
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
resistors. When R9 = R11 and R1 = R12, the CMRR of the
Instrumentation amplifier is determined by the matching
of resistor ratios R11/R12 and R1/R5. R10 serves as the
variable gain setting resistor on the EV kit.
Detailed Description of Hardware
The MAX40089 EV kit contains the MAX40089 IC, a rail-
to-rail output op amp with low noise and wide bandwidth
in 8-µMAX package. The EV kit operates from a single
2.7V to 5.5V DC power supply. The EV kit is meant
to work using split supplies as well where the voltage
The output voltage for the instrumentation amplifier for
CHA is given by the equation below and it applies to CHB
as well:
between V
and V is +2.7V to +5.5V.
DD
SS
V
OUTA
= (V
- V
) x [1+(R11/R12)
+ (2 x (R11/R10))]
INB+
INA+
Default Application Circuit
The EV kit comes preconfigured in a noninverting amplifier
configuration with gain set as 10V/V on both the channels.
The EV kit also comes with shielding and guarding on
the INA+/INB+ pins with usage of TRIAX connectors that
enable us to measure input leakage current on the order
of ~30fA. Inner shield of the TRIAX is driven to the INA+/
INB+ voltage to nullify leakage from input signal trace. If
this low input bias current measurement is not important
then R6, R17 can be opened and install JU2, JU3 to force
shield of TRIAX connector to ground.
where
GAIN = [1+(R11/R12) + (2 x (R11/R10))]
Dual Op Amp Driving Fully Differential
ADC Circuit (MAX40077 Only)
To configure the MAX40089 EV kit as ADC driver to drive
fully differential input signal into fully differential ADC,
apply each half of fully differential signal to INA+, INB+ test
points. Replace MAX40089AUT+ with MAX40077AUT+
Have JU1 short at 1-2 and JU4 short at 1-4 as per default
jumper configuration. R1, R11 can be chosen as 0Ω and
R5, R12 can be open to make both the channels as unity
gain follower configuration. The EV kit, by default, comes
in with Gain = 10V/V noninverting configuration with R1,
R11 = 1800Ω and R5, R15 = 200Ω.
Op Amp Configurations
The EV kit provides flexibility to easily reconfigure
the dual op amp into any of the three common circuit
topologies: inverting amplifier, noninverting amplifier, 2 op
amp instrumentation amplifier, and ADC driver.
Choose appropriate RC filter combination (R2, C11 on
OUTA and R14, C12 on OUTB) on each OUTA and OUTB
legs to optimize ADC performance.
These configurations are described in the next few sections.
Noninverting Configuration
The MAX40089 EV kit comes preconfigured as a nonin-
verting amplifier on both the channels. The gain is set by
the ratio of R1, R9 on CHA and R11, R12 on CHB. The
MAX40089 EV kit comes preconfigured for a gain of 10.
Transimpedance Amplifier circuit
To configure the MAX40089 EV kit as a transimpedance
amplifier (TIA), short INA+, INB+ test point to either
ground or appropriate bias voltage, replace R5, R12 with
a 0Ω resistor and replace R1, R11 pad with 100kΩ resis-
tor. Also, remove short 1-2 on JU1 and short 1-4 on JU4.
The output voltage for the noninverting configuration is
given by the equation below for CHA:
R1
The output voltage for CHA of the TIA is the input current
multiplied by the feedback resistor and it applies to CHB
as well:
V
= 1+
V
INA+
OUTA
R5
Inverting Configuration
V
OUTA
= (I
+ I ) x R11 + V
BIAS- OS
INA-
To configure the EV kit as an inverting amplifier on both
the channels, remove the shunt 1-2 on JU1, remove shunt
1-4 on JU4 and tie INA+, INB+ test points to ground or
any voltage.
where I
is the input current source applied at the
INA-
INA- test point, I
is the input bias current into INA-
BIAS-
pin, and V
is the input offset voltage of the op amp.
OS
Use capacitor C1 to stabilize the op amp by rolling off
high-frequency gain due to a large cable capacitance if
desired.
The output voltage for the inverting configuration is given
by the equation below for CHA:
R1
Capacitive Loads
V
= –
V
INA−
OUTA
R5
Some applications require driving large capacitive loads.
To improve stability of the amplifier in such cases, replace
R2 on OUTA and R14 on OUTB with a suitable isolation
resistance to improve amplifier phase margin.
2 Op Amp Instrumentation Amplifier
To configure the MAX40089 EV kit as an instrumentation
amplifier, choose R1, R9, R11, and R12 with appropriate
Maxim Integrated
│ 3
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
Table 1. Default Jumper Settings
JUMPER
SHUNT POSITION
1-2*
DESCRIPTION
INA- to GND
JU1
2-3
Apply external VREF to INA- for dc bias on output
INA- terminal floating
Not Installed
Install
INA+ TRIAX shield to GND
JU2
Not Installed*
Install
INA+ TRIAX shield floating
INB+ TRIAX shield to GND
JU3
Not Installed*
1-2
INB+ TRIAX shield floating
Connects INB- to OUTA for 2 op amp instrumentation amplifier application circuit
Apply external VREF to INB- for dc bias on output
INB- to GND
1-3
JU4
1-4*
Not Installed
Install*
INB- terminal floating
Single-supply operation
JU5
Not Installed
To enable split-supply operation
*Default position
Ordering Information
Component Suppliers
PART
TYPE
SUPPLIER
WEBSITE
MAX40089EVKIT#
#RoHS-compliant
EV Kit
Murata Electronics
North America Inc.
www.murata-northamerica.com
Note: Indicate that you are using the MAX40089 EV kit when
contacting these component suppliers.
Maxim Integrated
│ 4
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
MAX40089 EV Kit Bill of Materials
ITEM
QTY
REF DES
MAXINV
MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
CAPACITOR; SMT (0805); CERAMIC CHIP; 4.7µF; 50V;
TOL = 10%; MODEL = ; TG = -55°C TO +85°C; TC = X5R
1
2
C7, C9
20-004U7-O9
C2012X5R1H475K125AB
TDK
4.7µF
CAPACITOR; SMT (0402); CERAMIC CHIP; 0.1µF; 50V;
TOL = 10%; MODEL = CGA SERIES; TG = -55°C TO +125°C;
TC = X7R; FORMFACTOR
2
3
2
7
C8, C10
20-000U1-04A
N/A
N/A
0.1µF
N/A
TEST POINT; PIN DIA = 0.1IN; TOTAL LENGTH = 0.3IN;
BOARD HOLE = 0.04IN; BLACK; PHOSPHOR BRONZE WIRE
SILVER PLATE FINISH; RECOMMENDED FOR BOARD
THICKNESS = 0.062IN; NOT FOR COLD TEST
GND1-GND7
02-TPMINI5001-00
5001
KEYSTONE
KEYSTONE
INA+, INA-, INB+, INB-,
OUTA, OUTB, OUTFA,
OUTFB
TEST POINT; PIN DIA = 0.1IN; TOTAL LENGTH = 0.3IN;
BOARD HOLE = 0.04IN; WHITE; PHOSPHOR BRONZE WIRE
SILVER; NOT FOR COLD TEST
4
5
6
8
2
4
02-TPMINI5002-00
01-CBBJR796P-01
5002
N/A
INA+/TRIAX1,
INB+/TRIAX2
TROMPETER
ELECTRONICS INC
CONNECTOR; BNC; THROUGH HOLE;
FEMALE; RIGHT ANGLE; 6PINS
CBBJR79
CBBJR79
INA-/BNC2, INB-/BNC3,
OUTFA/BNC1,
OUTFB/BNC4
CONNECTOR; FEMALE; THROUGH HOLE;
BNC 50OHM PCB RECEPTACLE; STRAIGHT; 5PINS
01-31532952RFX5P-01
31-5329-52RFX
AMPHENOL
31-5329-52RFX
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY;
STRAIGHT THROUGH; 3PINS;
7
8
1
3
1
4
4
JU1
01-80010003100010003P-21
01-80010002100010002P-21
01-TSW10407LS4P-17
80-001K8-70
800-10-003-10-001000
800-10-002-10-001000
TSW-104-07-L-S
TNPW08051K80BE
N/A
MILLMAX
MILLMAX
SAMTEC
VISHAY DALE
N/A
HEADER_3P
HEADER_2P
TSW-104-07-L-S
1.8K
JU2, JU3, JU5
JU4
CONNECTOR, FEMALE, TH, BREAKAWAY, STR, 2PINS
EVKIT PART-CONNECTOR; MALE; THROUGH HOLE;
TSW SERIES; SINGLE ROW; STRAIGHT; 4PINS
9
10
11
R1, R3, R11, R15
R2, R6, R14, R17
RESISTOR; 0805; 1.8KΩ; 0.1%; 25PPM; 0.125W; THICK FILM
RESISTOR; 0805; 0Ω; JUMPER; 0.125W; THICK FILM;
FORMFACTOR
80-0000R-28
0
CRCW0805200RFK;
9C08052A2000FK
VISHAY DALE;
YAGEO
12
13
4
1
R4, R5, R12, R16
U1
80-0200R-25
200
RESISTOR; 0805; 200Ω; 1%; 100PPM; 0.125W; THICK FILM
EVKIT PART - IC; AMP; DUAL ULTRA-LOW INPUT
BIAS CURRENT; LOW NOISE AMPLIFIER; UMAX8
00-SAMPLE-01
MAX40089AUA+
MAXIM
MAX40089AUA+
TEST POINT; PIN DIA = 0.1IN; TOTAL LENGTH = 0.3IN;
BOARD HOLE = 0.04IN; RED;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
RECOMMENDED FOR BOARD THICKNESS = 0.062IN;
NOT FOR COLD TEST
VDD, VREFA,
VREFB, VSS
14
4
02-TPMINI5000-00
5000
MAX
KEYSTONE
MAXIM
N/A
15
1
PCB
EPCB
PCB
PCB:MAX
TOTAL
48
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
MAX40089 EV Kit Schematic
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Maxim Integrated
│ 6
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
MAX40089 EV Kit PCB Layout
MAX40089 EV Kit—Top Silkscreen
MAX40089 EV Kit—Layout Top side
Maxim Integrated
│ 7
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
MAX40089 EV Kit PCB Layout (continued)
MAX40089 EV Kit—Layer 2
MAX40089 EV Kit—Layer 3
Maxim Integrated
│ 8
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
MAX40089 EV Kit PCB Layout (continued)
MAX40089 EV Kit—Layout Bottom side
MAX40089 EV Kit—Bottom Silkscreen
Maxim Integrated
│ 9
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Evaluates: MAX40077, MAX40089
MAX40089 Evaluation Kit
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
4/18
Initial release
—
2
1
5/18
Add board photo
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2018 Maxim Integrated Products, Inc.
│ 10
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