Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

RF2512 Datasheet(PDF) 3 Page - RF Micro Devices

Part No. RF2512
Description  UHF TRANSMITTER
Download  14 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  RFMD [RF Micro Devices]
Homepage  http://www.rfmd.com
Logo RFMD - RF Micro Devices

RF2512 Datasheet(HTML) 3 Page - RF Micro Devices

  RF2512 Datasheet HTML 1Page - RF Micro Devices RF2512 Datasheet HTML 2Page - RF Micro Devices RF2512 Datasheet HTML 3Page - RF Micro Devices RF2512 Datasheet HTML 4Page - RF Micro Devices RF2512 Datasheet HTML 5Page - RF Micro Devices RF2512 Datasheet HTML 6Page - RF Micro Devices RF2512 Datasheet HTML 7Page - RF Micro Devices RF2512 Datasheet HTML 8Page - RF Micro Devices RF2512 Datasheet HTML 9Page - RF Micro Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 14 page
background image
11-13
RF2512
Rev B9 010509
11
Pin
Function
Description
Interface Schematic
1OSC B2
This pin is connected directly to the reference oscillator transistor base.
The intended reference oscillator configuration is a modified Colpitts.
An appropriate capacitor as chosen by the customer should be con-
nected between pin 1 and pin 2.
2OSC E
This pin is connected directly to the emitter of the reference oscillator
transistor. An appropriate capacitor as chosen by the customer should
be connected from this pin to ground.
See pin 1.
3OSC B1
This pin is connected directly to the reference oscillator transistor base.
The intended reference oscillator configuration is a modified Colpitts.
An appropriate capacitor as chosen by the customer should be con-
nected between pin 3 and pin 2.
See pin 1.
4
PLL ENABL This pin is used to power up or down the VCO and PLL. A logic high
(PLL ENABL>2.0V) powers up the VCO and PLL electronics. A logic
low (PLL ENABL<1.0V) powers down the PLL and VCO.
5GND1
Ground connection for the PA buffer amp. Keep traces physically short
and connect immediately to ground plane for best performance.
6VCC3
This pin is used to supply DC bias to the transmitter PA. A RF bypass
capacitor should be connected directly to this pin and returned to
ground. A 100pF capacitor is recommended for 915MHz applications.
A 220pF capacitor is recommended for 433MHz applications.
7
LVL ADJ
This pin is used to vary the transmitter output power. An output level
adjustment range greater than 12dB is provided through analog volt-
age control of this pin. DC current of the transmitter power amp ia also
reduced with output power. This pin MUST be low when the transmitter
is disabled.
8TX OUT
RF output pin for the transmitter electronics. TX OUT output impedance
is a low impedance when the transmitter is enabled. TX OUT is a high
impedance when the transmitter is disabled.
9GND2
Ground connection for the Tx PA functions. Keep traces physically
short and connect immediately to ground plane for best performance.
10
VCC1
This pin is used to supply DC bias to the PA buffer amp. A RF bypass
capacitor should be connected directly to this pin and returned to
ground. A 100pF capacitor is recommended for 915MHz applications.
A 220pF capacitor is recommended for 433MHz applications.
11
TX ENABL
Enables the transmitter circuits. TX ENABL>2.0V powers up all trans-
mitter functions. TX ENABL<1.0V turns off all transmitter functions
except the PLL functions.
12
PRESCL
OUT
Dual-modulus/Dual-divide prescaler output. The output can be inter-
faced to an external PLL IC for additional flexibility in frequency pro-
gramming.
13
VREF P
Bias voltage reference pin for bypassing the prescaler and phase
detector. The bypass capacitor should be of appropriate size to provide
filtering of the reference crystal frequency and be connected directly to
this pin.
OSC E
OSC B1
OSC B2
50 k
PLL ENABL
400
4k
LVL ADJ
40 k
TX OUT
20
V
CC
40 k
20 k
TX ENABL
PRESCL
OUT


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn