MAX11311PMB# Peripheral Module
Evaluates: MAX11311
General Description
The MAX11311PMB# peripheral module (Pmod™) provides
the necessary hardware to interface the MAX11311
12-channel programmable mixed-signal I/O device to any
system that utilizes Pmod-compatible expansion ports
configurable for SPI communication. The device is a 12-bit
multichannel analog-to-digital converter (ADC) and a
12-bit buffered DAC output in a single IC. This device also
includes software-configurable general-purpose I/O ports.
A local and two remote temperature sensors keep track of
junction and environmental temperatures. Adjacent pairs
of ports can also be used as logic translator or analog
switch. Each pin can also be used as a positive input of a
comparator with programmable threshold.
Refer to the MAX11311 IC data sheet for detailed information
regarding operation of the device and the USB2PMB1
(Munich) adapter board data sheet for detailed information
regarding the Munich board and GUI. Refer to the
MAX11311 peripheral module and Munich adaptor board
Quick Start Guide
for step-by-step evaluation instructions.
Refer to the MAX11311 Configuration Software User
Guide for detailed information using the design tool.
Benefits and Features
●
Up to 12 12-Bit ADC Programmable Inputs
●
Up to 12 12-Bit DACs with 25mA Current Capability
• 70mA max at +12V with On-Board Power Supply
• 30mA typ at -12V with On-Board Power Supply
• Use External Power Supply at VDDIO (VDDIO
Jumper Removed) if More Current is Needed
●
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●
●
●
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●
●
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Up to 12 Digital I/Os
Up to 12 Comparator Inputs
Internal or External Reference for ADC and DAC
Individually Selectable ADC References for Each Port
Internal Temperature Sensor
(-40°C to +125°C, ±3°C Accuracy)
Two Remote Temperature-Measurement Controllers
(-40°C to +150°C, ±3°C Accuracy)
2x6-Pin Pmod-Compatible Connector (SPI)
RoHS Compliant
Proven PCB Layout
Fully Assembled and Tested
Ordering Information
appears at end of data sheet.
Peripheral Module Board Photo
Pmod is a trademark of Digilent Inc.
19-7768; Rev 0; 2/16
MAX11311PMB# Peripheral Module
Evaluates: MAX11311
Detailed Description
SPI Interface
The MAX11311PMB# Pmod can plug directly into a
Pmod-compatible port (configured for SPI) through the
X1 connector. For information on the SPI protocol, refer
to the MAX11311 IC data sheet.
●
Connector X1 provides connection of the module to
the Pmod host. See
Table 1
and
Figure 1
for detailed
description.
●
Connector JP1 provides selection of +3.3V either
from the PMOD_SUPPLY or an external supply, X2.
●
Connectors SV1 and SV2 provide connection to the
IC pins (MAX11311 ports 0–11). Connector SV3 is
ground.
●
Connectors EXT_TEMP1 and EXT_TEMP2 provide
connection to the external temperature sensors.
●
Connector VDDIO provides connection to the
AVDDIO pins of the device, which is connected to
the +12V power supply
●
Connector VSSIO provides connection to the AVSSIO
pins of the device, which is the analog negative supply
for mixed-signal ports. Install VSSIO from 1 to 2 to
connect AVSSIO to ground. Install VSSIO from 2 to 3
to connect AVSSIO to -12V.
X1
INTB
7
8
9
CNVTB
GND
3.3V
.
10
11
12
1
2
3
4
5
6
CS
MOSI
MISO
SCLK
GND
3.3V
SPI
Figure 1. X1: Pmod SPI Connector Pin Configuration
Table 1. Connector X1 (SPI Communication)
PIN
1
2
3
4
5, 11
6, 12
7
8
9
10
SIGNAL
CS
MOSI
MISO
SCLK
GND
+3.3V
INTB
—
—
CNVTB
MAX11311 Serial Data Input
MAX11311 Serial-Data Output
MAX11311 Serial-Clock Input
Ground
+3.3V Power Supplies
Interrupt Open-Drain Output. Asserted low when the MAX11300 issues an interrupt.
No Connection
No Connection
ADC Conversion Control Input. Assert low to initiate an ADC conversion.
DESCRIPTION
Chip Select. Assert low to enable the SPI interface.
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MAX11311PMB# Peripheral Module
Evaluates: MAX11311
Default Jumper Setting
Verify that all jumpers are in their default positions, as
follows:
1) Jumper VDDIO: Connect from VDDIO to +12V
2) Jumper VSSIO: Connect from VSSIO to GND
3) Jumpers EXT_TEMP1 and EXT_TEMP2: Open
4) Jumper JP1: Connect PMOD_SUPPLY to +3.3V,
JP1-1 to JP1-2.
Visit
www.maximintegrated.com/evkitsoftware
to
download the latest version of the Munich GUI software.
Refer to the MAX11311PMB# peripheral module and
Munich (USB2PMB1) adapter board
Quick Start Guide
for
step-by-step evaluation using the Munich GUI.
External Power Supply
Power Supplies
The Pmod contains the MAX8752 step-up DC-DC converter
(U3), which upconverts the +3.3V power supply from the
Pmod X1 connector to +13V. The MAX5084 (U2) linear
regulator then regulates the +13V input to +5V output voltage,
providing power supply to the positive analog supply AVDD
of the IC. Another MAX5084 (U1) provides a +12V power
supply to the positive analog supply of the mixed-signal
ports (AVDDIO) of the IC. Additionally, the MAX629 (U5)
provides -12V power supply to the VSSIO from +3.3V
input. For bipolar applications, use an external power
supply to provide negative voltage for AVSSIO. See
Figure 2.
The on-board power supply provides 70mA max current
at VDDIO = +12V. If additional current is needed, use an
external power supply by removing the jumper connecting
VDDIO to +12V and connecting a +12V external power
supply to the VDDIO pin.
For bipolar applications, remove the jumper from the
VSSIO pin to GND and connect it from pin 2 to pin 3.
See
Figure 2
and refer to the MAX11311 IC data sheet
for details.
External Temperature Sensors
Software Graphical User Interface (GUI)
The Munich software GUI is provided to facilitate evaluation
of the Pmod.
Two-pin connector vertical headers, EXT_TEMP1 and
EXT_TEMP2, are provided to measure the environment
temperature. Connect the base and collector of diode-
connected transistors, such as the 2N3906 to the TEMP1
or TEMP2 pin and the emitter to the EXT pin to measure
the external temperature. See
Figures 3
and
4.
+3.3V (FROM
USB2PMB2
BOARD X1
CONNECTOR)
JP1
+3.3V (FROM
EXTERNAL
POWERY
SUPPLY)
MAX8752(U3)
+13V
MAX5084(U2)
+5V(AVDD)
+3.3V(DVDD)
MAX5084(U1)
+12V(VDDIO)
MAX629 (U5)
-12V (VSSIO)
MAX11311PMB
VSSIO (GND OR -12V)
Figure 2. Power-Supply Block Diagram
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Maxim Integrated
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MAX11311PMB# Peripheral Module
Evaluates: MAX11311
BASE AND COLLECTOR ARE CONNECTED
TOGETHER (RED WIRE)
EMITTER
(BLACK WIRE)
Figure 3. 2N3906 Diode-Connected Transistor Assembly (Not Included)
Figure 4. External Temperature Sensor Using Diode-Connected Transistor (Not Included)
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Maxim Integrated
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MAX11311PMB# Peripheral Module
Evaluates: MAX11311
Component Suppliers
SUPPLIER
Pulse Electronics
TDK Corp.
TE Connectivity
www.pulseelectronics.com
www.component.tdk.com
www.te.com
WEBSITE
Note:
Indicate that you are using the MAX11311PMB# when contacting these component suppliers.
Component List, PCB Files, and
Schematics
●
MAX1311PMB EV BOM
●
MAX1311PMB EV PCB
Layout
●
MAX1311PMB EV Schematic
Ordering Information
PART
MAX11311PMB#
USB2PMB1#
MAX11311SYS1#
#Denotes
RoHS compliant.
TYPE
Peripheral Module
Munich Adapter Board
Peripheral Module and
Munich Adapter Board
See the following links for component information, PCB
files, and schematic:
www.maximintegrated.com
Maxim Integrated
│
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