MAX11312PMB# Peripheral Module
Evaluates: MAX11312
General Description
The MAX11312PMB# peripheral module (Pmod™)
provides the necessary hardware to interface the MAX11312
12-channel programmable mixed-signal I/O device to any
system that utilizes Pmod-compatible expansion ports
configurable for I
2
C 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 MAX11312 IC data sheet for detailed information
regarding operation of the device and the USB2PMB2
(Munich) adapter board data sheet for detailed information
regarding the Munich board and GUI. Refer to the
MAX11312 peripheral module and Munich adaptor board
Quick Start Guide
for step-by-step evaluation instructions.
Refer to the MAX11312 Configuration Software User
Guide for detailed information using the design tool.
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
●
●
●
●
●
●
●
●
●
●
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)
2 x 6-Pin Pmod-Compatible Connector (I
2
C)
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.
19-7769; Rev 0; 2/16
MAX11312PMB# Peripheral Module
Evaluates: MAX11312
Detailed Description
I
2
C Interface
The MAX11312PMB# Pmod can plug directly into a
Pmod-compatible port (configured for I
2
C) through the X1
connector. For information on the I
2
C protocol, refer to the
MAX11312 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 (MAX11312 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 the
VSSIO jumper 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
AD0
AD1
SCL
SDA
GND
3.3V
I
2
C
Figure 1. X1: Pmod I
2
C Connector Pin Configuration
Table 1. Connector X1 (I
2
C Communication)
PIN
1
2
3
4
5, 11
6, 12
7
8
9
10
SIGNAL
AD0
AD1
SCL
SDA
GND
+3.3V
INTB
—
—
CNVTB
MAX11312 Slave Address Bit 0
MAX11312 Slave Address Bit 1
MAX11312 Serial Interface Clock Input
MAX11312 Serial Interface Input and Output
Ground
+3.3V Power Supplies
Interrupt Open-Drain Output. Asserted low when the MAX11312 issues an interrupt.
No Connection
No Connection
ADC Conversion Control Input. Assert low to initiate an ADC conversion.
DESCRIPTION
www.maximintegrated.com
Maxim Integrated
│
2
MAX11312PMB# Peripheral Module
Evaluates: MAX11312
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 MAX11312PMB# peripheral module and
Munich (USB2PMB2) 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. In addition, 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 VSSIO
pin to GND and connect it from pin 2 to pin 3. See
Figure 2
and refer to the MAX11312 IC data sheet for details.
External Temperature Sensors
Software Graphical User Interface (GUI)
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.
The Munich software GUI is provided to facilitate evaluation
of the Pmod.
+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)
MAX11312PMB
VSSIO (GND OR -12V)
Figure 2. Power-Supply Block Diagram
www.maximintegrated.com
Maxim Integrated
│
3
MAX11312PMB# Peripheral Module
Evaluates: MAX11312
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)
www.maximintegrated.com
Maxim Integrated
│
4
MAX11312PMB# Peripheral Module
Evaluates: MAX11312
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 MAX11312PMB# when contacting these component suppliers.
Component List, PCB Files, and
Schematics
●
MAX11312PMB# EV BOM
●
MAX11312PMB# EV PCB Layout
●
MAX11312PMB# EV Schematic
Ordering Information
PART
MAX11312PMB#
USB2PMB2#
MAX11312SYS1#
#Denotes
RoHS compliant.
TYPE
Peripheral Module
Munich Adapter Board
Peripheral Module and
Munich Adapter Board
See the following links for component information, PCB
layout diagrams, and schematic.
www.maximintegrated.com
Maxim Integrated
│
5
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
