Telit Wireless Solutions GE864 DAC and ADC section, DAC Converter, Description, Min Max Units

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GE864 Hardware User Guide

1vv0300694 Rev.10 - 10/06/08

11 DAC and ADC section

11.1DAC Converter

11.1.1Description

The GE864-QUAD / PY module provides a Digital to Analog Converter. The signal (named

DAC_OUT) is available on BGA Ball C7 of the GE864-QUAD / PY module and on pin 17 of PL102 on EVK2 Board (CS1152).

The on board DAC is a 10-bit converter, able to generate a analogue value based a specific input in the range from 0 up to 1023. However, an external low-pass filter is necessary

	Min	Max	Units
Voltage range (filtered)	0	2,6	Volt
Range	0	1023	Steps

The precision is 10 bits so, if we consider that the maximum voltage is 2V, the integrated voltage could be calculated with the following formula:

Integrated output voltage = 2 * value / 1023

DAC_OUT line must be integrated (for example with a low band pass filter) in order to obtain an analog voltage.

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Contents GE864 Hardware User Guide This document is relating to the following products GE864 Hardware User GuideContents 10.4 10.110.2 10.3Packing system Safety RecommandationsDisclaimer GE864-QUAD / PY OverviewLength 30 mm Width Thickness GE864 Mechanical DimensionsPIN-OUT GE864 module connectionsGpio Reserved Vbatt TOP View BGA Balls LayoutReserved Turning on the GE864-QUAD / PY Hardware Commands10k Hardware shutdown Turning OFF the GE864-QUAD / PYHardware Unconditional Restart 10k Power Supply Requirements Power SupplyElectrical Design Guidelines General Design Rules1.2 + 12V input Source Power Supply Design Guidelines GE864 Hardware User Guide Battery Source Power Supply Design Guidelines Battery Charge control Circuitry Design Guidelines GE864 Hardware User Guide Thermal Design Guidelines Power Supply PCB layout Guidelines GSM Antenna Requirements AntennaAntenna Line on PCB Requirements GSM Antenna PCB line GuidelinesGSM Antenna Installation Guidelines Operating Range Interface levels 2.8V Cmos Logic level specificationsCurrent characteristics Absolute Maximum Ratings -Not FunctionalSignal Function Bga Ball Reset signalSignal Min Max Absolute Maximum Ratings -Not Functional ParameterMin Max Serial PortsOperating Range Interface levels 2.8V Cmos Level Min Max Signals of the GE864 serial port are RS232 level translation GE864 Hardware User Guide 5V Uart level translation GE864 Hardware User Guide External Amplifier Audio Section OverviewShort description Input Lines MicrophoneMicmt 1st differential microphone path Input Lines CharacteristicsOutput Lines Speaker External SIM Holder Implementation Output Lines CharacteristicsOnoff General Purpose I/OPict01 Absolute Maximum Ratings -Not Functional Parameter Min Max Gpio Logic levelsOperating Range Interface levels 1.8V Cmos Level Min Max Using a Gpio Pad as Output Using a Gpio Pad as InputUsing the Rftxmon Output GPIO5 Using the RF Transmission Control GPIO4Using the Alarm Output GPIO6 AT#SRP=3 Using the Buzzer Output GPIO7Magnetic Buzzer Concepts Frequency Behaviour Power Supply InfluenceWorking Current Influence Allowed Gpio Using the Temperature Monitor FunctionLED status Device Status Indication of network service availabilityRTC Bypass out VAUX1 power outputMin Max Units DAC and ADC sectionDAC Converter DescriptionEnabling DAC Command is AT#DAC=enable,valueLow Pass Filter Example ADC Converter Using ADC ConverterMounting the GE864 on your Board Module finishing & dimensions12.1General Top View Recommended foot print for the application GE864Top View Suggested Inhibit AreaStencil Debug of the GE864 in productionBall pitch mm Solder resist opening diameter a mm PCB pad designMetal pad diameter B mm Solder paste Sn/Ag/Cu Solder pasteFinish Layer thickness µm Properties Lead freeFollowing is the recommended solder reflow profile 12.1.8 GE864 Solder reflowPacking system 12.2.1 GE864 orientation on the tray Moisture sensibility Conformity Assessment Issues Safety Recommandations Revision Date Changes Document Change Log

GE864 specifications

The Telit Wireless Solutions GE864 is a compact yet robust cellular module designed for a wide range of M2M (Machine-to-Machine) applications. As part of the Telit family, the GE864 is particularly notable for its small form factor, reliability, and versatility, making it an ideal choice for various industries including automotive, healthcare, and utilities.

One of the standout features of the GE864 is its integrated GPRS capabilities, allowing devices to connect to cellular networks seamlessly. With a maximum data rate of 85.6 kbps for downlink and 42.8 kbps for uplink, this module facilitates efficient data transmission, suitable for applications that require real-time data monitoring and control.

The GE864 supports multiple frequency bands, ensuring global compatibility. It can operate on GSM/GPRS networks, enhancing its usability across different regions. This multi-band support allows developers to deploy their solutions in diverse markets without modifying the hardware, thus saving both time and resources.

Power management is another critical area where the GE864 shines. The module comes equipped with advanced power-saving features, allowing it to operate effectively in battery-powered applications. Notable features include sleep modes and intelligent power management protocols that help extend battery life while maintaining reliable connectivity.

In terms of physical specifications, the GE864 has a compact design, measuring only 29x38 mm, which is essential for integration into space-constrained environments. This makes it particularly well-suited for applications in remote monitoring, asset tracking, and utility metering.

The module supports a range of interfaces, including UART, USB, and I2C, providing developers with the flexibility to connect various peripheral devices and sensors. This versatility enables the creation of customized solutions tailored to specific application needs.

Furthermore, the GE864 is designed to meet rigorous quality and durability standards, making it suitable for use in harsh environments. Its resilience to extreme temperatures and vibrations ensures dependable performance in challenging conditions, which is often a requirement in industrial and automotive applications.

In summary, the Telit Wireless Solutions GE864 is a feature-rich cellular module that combines compact design with robust performance and versatility. Its advanced connectivity options, efficient power management, and reliable operation make it an invaluable asset for businesses looking to develop innovative M2M solutions. Whether it’s for smart cities, telematics, or healthcare applications, the GE864 is engineered to meet the demands of today's connected world.