ADF7011

Features:

Single Chip Low Power UHF Transmitter
Frequency Band
   433 MHz to 435 MHz
   868 MHz to 870 MHz
On-Chip VCO and Fractional-N PLL
2.3 V to 3.6 V Supply Voltage
Programmable Output Power 16 dBm to +12 dBm, 0.3 dB Steps
Data Rates up to 76.8 kbps
Low Current Consumption 29 mA at +10 dBm at 433.92 MHz


Application

Low Cost Wireless Data Transfer
Wireless Metering
Remote Control/Security Systems
Keyless Entry


Pinout




Specifications

V_DD to GND³  . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to + 7 V
CPV_DD to GND  . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to + 7 V
Digital I/O Voltage to GND  . . . . . . .   0.3 V to DV_DD + 0.3 V
Operating Temperature Range
Industrial (B Version)  . . . . . . . . . . . . . . . .   40°C to +85°C
Storage Temperature Range  . . . . . . . . . . 65°C to +125°C
Maximum Junction Temperature  . . . . . . . . . . . . . . . . .125°C
Lead Temperature, Soldering
Vapor Phase (60 sec)  . . . . . . . . . . . . . . . . . . . . . . . . 235°C
Infrared (15 sec)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .240°C


Description

The ADF7011 is a low power OOK/ASK/FSK/GFSK UHF transmitter designed for use in ISM band systems. It contains and integrated VCO and -∆ fractional-N PLL. The output power, channel spacing, and output frequency are programmable with four 24-bit registers. The fractional-N PLL enables the user to select any channel frequency within the European 433 MHz and 868 MHz bands, allowing the use of the ADF7011 in frequency hopping systems. The fractional-N also allows the transmitter to operate in the less congested sub-bands of 868 MHz to 870 MHz SRD band.

ADF7011 is possible to choose from the four different modulation schemes: Binary or Gaussian Frequency Shift Keying (FSK/GFSK), Amplitude Shift Keying (ASK), or On/Off Keying (OOK). ADF7011 also features a crystal compensation register that can provide ±1 ppm resolution in the output frequency. Indirect temperature compensation of the crystal can be accomplished inexpensively using this register. Control of the four on-chip registers is via a simple 3-wire interface. The devices operate with a power supply ranging from 2.3 V to 3.6 V and can be powered down when not in use.