LTP5901-IPM datasheet(24/36 Pages) LINER

24 / 36 page

LTP5901-IPM/LTP5902-IPM

59012ipmfa

For more information www.linear.com/LTP5901-IPM or www.linear.com/LTP5902-IPM

Figure 13. Eterna Block Diagram

4-BIT

DAC

VGA

BPF

PPF

AGC

LPF

ADC

DAC

PLL

RSSI

LNA

20MHz

32kHz

32kHz, 20MHz

PTAT

59012ipm F13

BAT

LOAD

LIMITER

VOLTAGE REFERENCE

ANALOG CORE

DIGITAL CORE

CORE REGULATOR

CLOCK REGULATOR

ANALOG REGULATOR

DC/DC

CONVERTER

PRIMARY

DC/DC

CONVERTER

RELAXATION

OSCILLATOR

PoR

TIMERS

SCHED

SRAM

72kB

FLASH

512kB

FLASH

CONTROLLER

CODE

AES

AUTO

MAC

802.15.4

MOD

802.15.4

FRAMING

DMA

IPCS

SPI

SLAVE

CLI

UART

(2-PIN)

API

UART

(6-PIN)

ADC

CTRL

802.15.4

DEMOD

SYSTEM

PMU/

CLOCK

CONTROL

10-BIT

ADC

operaTion

TheLTP5901-IPM/LTP5902-IPMistheworld’smostenergy

efficient IEEE 802.15.4 compliant platform, enabling bat-

tery and energy harvested applications. With a powerful

32-bit ARM Cortex-M3, best-in-class radio, flash, RAM

and purpose-built peripherals, Eterna provides a flexible,

scalable and robust networking solution for applications

demandingminimalenergyconsumptionanddatareliability

in even the most challenging RF environments.

Shown in Figure 13, Eterna integrates purpose-built

peripherals that excel in both low operating-energy con-

sumption and the ability to rapidly and precisely cycle

between operating and low-power states. Items in the

gray shaded region labeled Analog Core correspond to

the analog/RF components.

POWER SUPPLY

Eterna is powered from a single pin, VSUPPLY, which

powers the I/O cells and is also used to generate internal

supplies.Eterna’stwoon-chipDC/DCconvertersminimize

Eterna’s energy consumption while the device is awake. To

conserve power the DC/DC converters are disabled when

the device is in low power state. Eterna’s power supply

conditioningarchitecture,includingthetwointegratedDC/

DC converters and three integrated low dropout regula-

tors, provides excellent rejection of supply noise. Eterna’s

operating supply voltage range is high enough to support

direct connection to lithium-thionyl chloride (Li-SOCl2)

sources and wide enough to support battery operation

over a broad temperature range.

LTP5901-IPM Datasheet(PDF) 24 Page - Linear Technology

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