9. TM. 10. IN T 1. 11. AUX. 12. RS. V. 13. VD. D. 14. VD. D_. OT. P. 15. N.C . 16 ... STAMP2 default PINOUT - TOP VIEW.
Evaluates: MAX21000
MAX21000 Evaluation Board Adapter
General Description
The MAX21000 evaluation board (EV board) adapter provides the hardware necessary to easily connect the MAX21000 ultra-accurate, low-power, 3-axis digital output gyroscope to an existing system. The EV board includes the MAX21000, an LDO regulator (MAX1819), and jumpers.
EV Board Contents
●● Assembled circuit board, including: • MAX21000 inertial measurement unit • MAX1819 low dropout regulator
Features
●● Easy Evaluation of the MAX21000 in an Existing System ●● All Device Pins Are Available on a Standard Connector ●● On-Board LDO That Can Be Used for Voltage Regulation ●● Evaluation Software Tool Available ●● RoHS Compliant ●● Proven PCB Layout ●● Fully Assembled and Tested Ordering Information appears at end of data sheet.
Figure 1. MAX21000 EV Board Photo: Top View (left), Bottom View (right)
19-6562; Rev 1; 3/15
Evaluates: MAX21000
MAX21000 Evaluation Board Adapter Quick Start
JP4 Jumper
Required Equipment ●● ●● ●●
MAX21000 EV board System able to communicate through the I2C or SPI interface 1.8V to 3.3V power supply
Procedure
JP4 jumper is used to set the VDD pin of the MAX21000 to one of the VDD_IO, VDD_CORE or VDD_REG voltages. By default, the jumper configuration is set to connect VDD pin of the MAX21000 to VDD_CORE. JP4 jumper can also be used to measure the power consumption of the MAX21000 in case the digital multimeter is used in current mode and connected between pins 3-4.
The EV board is fully assembled and tested. Follow the steps below to verify board operation: 1) Using connector P1, connect to SPI or I2C. Other I2C/ SPI lines can be reached at connectors P2 and P3, if necessary. 2) Supply the EV board adapter through the P1 connector, providing directly VDD_CORE and VDD_IO. 3) Connector JP4 gives the option where to connect the analog supply of the MAX21000. The VDD pin can also be supplied directly from the VDD_CORE or VDD_ REG (regulated voltage through MAX1819 LDO).
Note: For proper operation of the MAX21000, the potential on VDDIO needs to be set lower than VDD. Refer to the Electrical Characteristics table in the MAX21000 data sheet. In case JP4 is set, connect pins 5-6 as shown in Table 3. VDD_CORE is supplied by the on-board regulator (MAX1819), VDD_REG, and in this configuration, VDDIO has to be set lower than 1.8V for proper operation of the MAX21000.
4) The device is now able to communicate with the system.
Table 1. JP2 Jumper Setting
Jumper Descriptions
JP5 Jumper
The JP5 jumper is used to set the regulator input voltage to either VDD_CORE or VDD_AUX.
SHUNT POSITION
JP2 Jumper
The JP2 jumper is used to set the CS_MAIN manually to VDD_IO. Note: This jumper can be shorted in case I2C interface is used. The board also lets the user populate I2C pullup resistors R6, R7 in case these pullup resistors are missing in the main system. R6 and R7 are unpopulated by default.
JP3 Jumper The JP3 jumper is used to set the SDO_SA0_MAIN manually to either VDD_IO or GND.
1-2
DESCRIPTION Chip select pin for I2C/SPI (CS_MAIN) is shorted to VDD_IO (logic-high)
Table 2. JP3 Jumper Setting SHUNT POSITION
DESCRIPTION
1-2
SPI serial data out or I2C slave address LSB (SDO_SA0_MAIN) is shorted to VDD_IO (logic 1).
2-3
SPI serial data out or I2C slave address LSB (SDO_SA0_MAIN) is shorted to GND (logic 0).
Table 3. JP4 Jumper Setting SHUNT POSITION
VDD_CORE_DUT
VDD_CORE
VDD_IO
1-2
VDD_IO
—
1.8V to 3.3V
3-4
VDD_CORE
1.8V to 3.3V
—
Analog supply of the device (VDD_CORE_DUT) is connected to the VDD_CORE input (default setting).
—
Analog supply of the device (VDD_CORE_DUT) is connected to the regulated power output. The output voltage of the regulator can be adjusted via resistors R1 and R2 (VDD_REG = 1.8V at default setting).
5-6
VDD_REG
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—
DESCRIPTION Analog supply of the device (VDD_CORE_DUT) is connected to the digital supply (VDD_IO).
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Evaluates: MAX21000
MAX21000 Evaluation Board Adapter Table 4. JP5 Jumper Setting SHUNT POSITION
DESCRIPTION
1-2
Voltage regulator input is shorted to the VDD_AUX voltage.
2-3
Voltage regulator input is shorted to the VDD_CORE voltage (default setting).
V DD_COR E _DUT
C2 GND 100nF
NC_01 N.C . SCL _SCK
5
6
13 R SV
V DD
14
V DD_AUX
AUX IN T1 TM IN T2
12
10
IN T1
9
TM
A1
JP5
R4
C4 1uF
GND
0 R5
V DD_R E G
3 2 1
DSY NC
11
CS
N.C .
SDO_SA0
4
V DDIO
V DD_COR E
U1 MAX 21000
A3
R SV D_T
C3
DNM
8
SCL _MAIN
15
16 3
N.C.
2
SDA_MASTE R
V DD_OTP
SCL _MASTE R
GND
100nF
1
SDA_SDI
GND
V DD_IO
GND DNM
7
C1
C3
R SV
U2 IN
OUT
SHDN
POK
GND
SE T
FL 1
C1
A2
R3 100K
2.7uH R1 22K
C5 3.3uF
C2
MAX 1819 IN T2
GND
GND
R 1 = R2 * (Vout/1.25V )-1 with R2 from 25K to 100K
GND
R2 50K
GND
SDA_SDI_MAIN SDO_SA0_MAIN
GND
CS_MAIN
JP3
DNM - Header 3x2
GPIO2 GPIO4
V DD_IO
V DD_R E G
V DD_IO
V DD_IO CS_MAIN
V DD_COR E
SDO_SA0_MA IN
1 3 5
P4
2 4 6
2 4 6
1 2 3
JP2
JP4
1 2
1 3 5
GPIO1 GPIO3
V DD_COR E _DUT
GND
STAMP2 default PINOUT - TOP VIEW
V DD_IO
P1 2 4 6 8
1 3 5 7
DNM - Header 4x2 GND
CS_MAIN SDA_SDI_MAIN IN T1
SCL _AUX 1 SDO_AUX 1 R SV D_T
P3 2 4 6 8
1 3 5 7
DNM - Header 4x2
V DD_COR E INT 2 SDA_MAST E R I2C_SDA_A UX 2
SCL _MAIN SDO_SA0_MAIN
CS_AUX 1 SDA_SDI_AUX 1 IN T_AUX 1 V DD_IO
V DD_AUX
I2C pull-up resistors
GND
M1
M2
M3
M4
1
1
1
1
DNM - Header 3x2
GND
GND
GND
GND
R7 DNM
SCL _MAIN
DSY NC SCL _MAST E R I2C_SCL _A UX 2
2 4 6
1 3 5
P2
R6 DNM
SDA_SDI_MAIN
Figure 2. MAX21000 EV Board Schematic
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Maxim Integrated │ 3
MAX21000 Evaluation Board Adapter
Evaluates: MAX21000
Figure 3. 3D View of the MAX21000 EV Board Layout
Figure 4. MAX21000 EV Board Layout—Top View
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Figure 5. MAX21000 EV Board Layout—Bottom View
Maxim Integrated │ 4
Evaluates: MAX21000
MAX21000 Evaluation Board Adapter Component List DESIGNATOR
COUNT
DESCRIPTION
DESIGNATOR
COUNT
DESCRIPTION
JP4
1
Header 3x2 (2.54mm) or 0805 surface mount 0Ω resistor
C1, C2
2
Capacitors 100nF (10V 10% X7R 0402)
C4
1
Capacitor 1µF (10V 10% X6S 0402)
JP5
1
Jumper, 3-pin (0402 surface mount 0Ω resistor)
C5
1
Capacitor 3.3µF (6.3V 10% X5R 0402)
U2
1
MAX1819 regulator (500mA LDO)
P1, P3
2
Headers 4x2, 2.54mm pitch
R4
1
Resistor 0Ω (1/10W 0603)
P2, P4
2
Headers 3x2, 2.54mm pitch
U1
1
MAX21000 IMU
R3
1
Resistor 100kΩ (1% 1/16W 0402)
FL1
1
Inductor 2.7µF (10µA 10% 2Ω 0402)
R1
1
Resistor 22kΩ (1% 1/10W 0603)
JP2
1
Jumper, 2-pin through hole
R2
1
JP3
1
Jumper, 3-pin through hole
Resistor 49.9kΩK (1% 1/10W 0603)
R5, R6, R7
3
Resistors (do not mount)
Ordering Information PART
PIN-PACKAGE
MAX21000EVBRD#
EV board
#Denotes RoHS compliant.
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Maxim Integrated │ 5
Evaluates: MAX21000
MAX21000 Evaluation Board Adapter Revision History REVISION NUMBER
REVISION DATE
0
3/13
Initial release
1
3/15
Revised EV kit data sheet
DESCRIPTION
PAGES CHANGED — 1–5
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.
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