MAX11301 Datasheet, PDF (1/55 Pages) Maxim Integrated Products – Programmable Sample Averaging Per ADC Port

MAX11301
EVALUATION KIT AVAILABLE
PIXI, 20-Port Programmable Mixed-Signal I/O with
12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO
General Description
The MAX11301 integrates a PIXI™, 12-bit, multichannel,
analog-to-digital converter (ADC) and a 12-bit, multichan-
nel, buffered digital-to-analog converter (DAC) in a single
integrated circuit. This device offers 20 mixed-signal high-
voltage, bipolar ports, which are configurable as an ADC
analog input, a DAC analog output, a general purpose
input (GPI), a general-purpose output (GPO), or an analog
switch terminal. One internal and two external temperature
sensors track junction and environmental temperature.
Adjacent pairs of ports are configurable as a logic-level
translator for open-drain devices or an analog switch.
PIXI ports provide highly flexible hardware configuration
for 12-bit mixed-signal applications. The MAX11301 is best
suited for applications that demand a mixture of analog and
digital functions. Each port is individually configurable with
up to four selectable voltage ranges within -10V to +10V.
The MAX11301 allows for the averaging of 2, 4, 8, 16, 32,
64, or 128 ADC samples from each ADC-configured port
to improve noise performance. A DAC-configured output
port can drive up to 25mA. The GPIO ports can be pro-
grammed to user-defined logic levels, and a GPI coupled
with a GPO forms a logic-level translator.
Internal and external temperature measurements monitor
programmable conditions of minimum and maximum tem-
perature limits, using the interrupt to notify the host if one
or more conditions occur. The temperature measurement
results are made available through the serial interface.
The MAX11301 features an internal, low-noise 2.5V volt-
age reference and provides the option to use external
voltage references with separate inputs for the DAC and
ADC. The MAX11301 uses a 400kHz I²C-compatible
serial interface, operating from a 5V analog supply and a
1.8V to 5.0V digital supply. The PIXI port supply voltages
operate from a wide -12.0V to +12.0V.
The MAX11301 is available in a 40-pin TQFN, 6mm x 6mm
package or a 48-pin TQFP, 9mm x 9mm package specified
over the -40°C to +105°C temperature range.
Applications
●● Base-Station RF Power Device Bias Controllers
●● System Supervision and Control
●● Power-Supply Monitoring
●● Industrial Control and Automation
●● Control for Optical Components
Benefits and Features
●● 20 Configurable Mixed-Signal Ports Maximize Design
Flexibility Across Platforms
• Up to 20 12-Bit ADC Inputs
▫▫ Single-Ended, Differential, or Pseudo-Differential
▫▫ Range Options: 0 to 2.5V, ±5V, 0 to +10V, -10V
to 0V
▫▫ Programmable Sample Averaging Per ADC Port
▫▫ Unique Voltage Reference for Each ADC PIXI
Port
• Up to 20 12-Bit DAC Outputs
▫▫ Range Options: ±5V, 0 to +10V, -10V to 0V
▫▫ 25mA Current Drive Capability with Overcurrent
Protection
• Up to 20 General-Purpose Digital I/Os
▫▫ 0 to +5V GPI Input Range
▫▫ 0 to +2.5V GPI Programmable Threshold Range
▫▫ 0 to +10V GPO Programmable Output Range
▫▫ Logic-Level Shifting Between Any Two Pins
• 60Ω Analog Switch Between Adjacent PIXI Ports
• Internal/External Temperature Sensors, ±1˚C
Accuracy
●● Adapts to Specific Application Requirements and
Allows for Easy Reconfiguration as System Needs
Change
●● Configurability of Functions Enables Optimized PCB
Layout
●● Reduces BOM Cost with Fewer Components in
Small Footprint
• 36mm² 40-Pin TQFN
• 49mm² 48-Pin TQFP
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX11301.related.
PIXI is a trademark of Maxim Integrated Products, Inc..
19-7579; Rev 0; 3/15