1185 datasheet(9/50 Pages) TI

Part #	1185

Description	Single Chip Low Cost Low Power RF-Transmitter

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Manufacturer	TI [Texas Instruments]

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CC1150

Preliminary Data Sheet (rev. 1.0.)

SWRS037

Page 9 of 49

Pin # Pin name

Pin type

Description

1

SCLK

Digital Input

Serial configuration interface, clock input

2

SO

(GDO1)

Digital Output

Serial configuration interface, data output.

Optional general output pin when CSn is high

3

DVDD

Power (Digital)

1.8V-3.6V digital power supply for digital I/Oís and for the digital core

voltage regulator

4

DCOUPL

Power (Digital)

1.6V-2.0V digital power supply output for decoupling.

NOTE: This pin is intended for use with the CC1150 only. It can not be

used to provide supply voltage to other devices.

5

XOSC_Q1

Analog I/O

Crystal oscillator pin 1, or external clock input

6

AVDD

Power (Analog)

1.8V-3.6V analog power supply connection

7

XOSC_Q2

Analog I/O

Crystal oscillator pin 2

8

GDO0

(ATEST)

Digital I/O

Digital output pin for general use:

• Test signals

• FIFO status signals

• Clock output, down-divided from XOSC

• Serial input TX data

Also used as analog test I/O for prototype/production testing

9

CSn

Digital Input

Serial configuration interface, chip select

10

RF_P

RF I/O

Positive RF output signal from PA

11

RF_N

RF I/O

Negative RF output signal from PA

12

AVDD

Power (Analog)

1.8V-3.6V analog power supply connection

13

AVDD

Power (Analog)

1.8V-3.6V analog power supply connection

14

RBIAS

Analog I/O

External bias resistor for reference current

15

DGUARD

Power (Digital)

Power supply connection for digital noise isolation

16

SI

Digital Input

Serial configuration interface, data input

Table 11: Pinout overview

13 Circuit Description

BIAS

XOSC_Q1 XOSC_Q2

XOSC

FREQ

SYNTH

RADIO CONTROL

RF_P

RF_N

CSn

SI

SO (GDO1)

SCLK

GDO0 (ATEST)

RBIAS

PA

Figure 2: CC1150 Simplified Block Diagram

A simplified block diagram of CC1150 is shown

in Figure 2.

The CC1150 transmitter is based on direct

synthesis of the RF frequency. The frequency

synthesizer includes a completely on-chip LC

VCO.

A crystal is to be connected to XOSC_Q1 and

XOSC_Q2. The crystal oscillator generates the

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